AutofillService
public
abstract
class
AutofillService
extends Service
An AutofillService
is a service used to automatically fill the contents of the screen
on behalf of a given user - for more information about autofill, read
Autofill Framework.
An AutofillService
is only bound to the Android System for autofill purposes if:
- It requires the
android.permission.BIND_AUTOFILL_SERVICE
permission in its
manifest.
- The user explicitly enables it using Android Settings (the
Settings#ACTION_REQUEST_SET_AUTOFILL_SERVICE
intent can be used to launch such
Settings screen).
Basic usage
The basic autofill process is defined by the workflow below:
- User focus an editable
View
.
- View calls
AutofillManager#notifyViewEntered(android.view.View)
.
- A
ViewStructure
representing all views in the screen is created.
- The Android System binds to the service and calls
onConnected()
.
- The service receives the view structure through the
onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
.
- The service replies through
FillCallback#onSuccess(FillResponse)
.
- The Android System calls
onDisconnected()
and unbinds from the
AutofillService
.
- The Android System displays an autofill UI with the options sent by the service.
- The user picks an option.
- The proper views are autofilled.
This workflow was designed to minimize the time the Android System is bound to the service;
for each call, it: binds to service, waits for the reply, and unbinds right away. Furthermore,
those calls are considered stateless: if the service needs to keep state between calls, it must
do its own state management (keeping in mind that the service's process might be killed by the
Android System when unbound; for example, if the device is running low in memory).
Typically, the
onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
will:
- Parse the view structure looking for autofillable views (for example, using
AssistStructure.ViewNode.getAutofillHints()
.
- Match the autofillable views with the user's data.
- Create a
Dataset
for each set of user's data that match those fields.
- Fill the dataset(s) with the proper
AutofillId
s and AutofillValue
s.
- Add the dataset(s) to the
FillResponse
passed to
FillCallback#onSuccess(FillResponse)
.
For example, for a login screen with username and password views where the user only has one
account in the service, the response could be:
new FillResponse.Builder()
.addDataset(new Dataset.Builder()
.setValue(id1, AutofillValue.forText("homer"), createPresentation("homer"))
.setValue(id2, AutofillValue.forText("D'OH!"), createPresentation("password for homer"))
.build())
.build();
But if the user had 2 accounts instead, the response could be:
new FillResponse.Builder()
.addDataset(new Dataset.Builder()
.setValue(id1, AutofillValue.forText("homer"), createPresentation("homer"))
.setValue(id2, AutofillValue.forText("D'OH!"), createPresentation("password for homer"))
.build())
.addDataset(new Dataset.Builder()
.setValue(id1, AutofillValue.forText("flanders"), createPresentation("flanders"))
.setValue(id2, AutofillValue.forText("OkelyDokelyDo"), createPresentation("password for flanders"))
.build())
.build();
If the service does not find any autofillable view in the view structure, it should pass
null
to FillCallback#onSuccess(FillResponse)
; if the service encountered an error
processing the request, it should call FillCallback#onFailure(CharSequence)
. For
performance reasons, it's paramount that the service calls either
FillCallback#onSuccess(FillResponse)
or FillCallback#onFailure(CharSequence)
for
each onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
received - if it
doesn't, the request will eventually time out and be discarded by the Android System.
Saving user data
If the service is also interested on saving the data filled by the user, it must set a
SaveInfo
object in the FillResponse
. See SaveInfo
for more details and
examples.
User authentication
The service can provide an extra degree of security by requiring the user to authenticate
before an app can be autofilled. The authentication is typically required in 2 scenarios:
When using authentication, it is recommended to encrypt only the sensitive data and leave
labels unencrypted, so they can be used on presentation views. For example, if the user has a
home and a work address, the Home
and Work
labels should be stored unencrypted
(since they don't have any sensitive data) while the address data per se could be stored in an
encrypted storage. Then when the user chooses the Home
dataset, the platform starts
the authentication flow, and the service can decrypt the sensitive data.
The authentication mechanism can also be used in scenarios where the service needs multiple
steps to determine the datasets that can fill a screen. For example, when autofilling a financial
app where the user has accounts for multiple banks, the workflow could be:
- The first
FillResponse
contains datasets with the credentials for the financial
app, plus a "fake" dataset whose presentation says "Tap here for banking apps credentials".
- When the user selects the fake dataset, the service displays a dialog with available
banking apps.
- When the user select a banking app, the service replies with a new
FillResponse
containing the datasets for that bank.
Another example of multiple-steps dataset selection is when the service stores the user
credentials in "vaults": the first response would contain fake datasets with the vault names,
and the subsequent response would contain the app credentials stored in that vault.
Data partitioning
The autofillable views in a screen should be grouped in logical groups called "partitions".
Typical partitions are:
- Credentials (username/email address, password).
- Address (street, city, state, zip code, etc).
- Payment info (credit card number, expiration date, and verification code).
For security reasons, when a screen has more than one partition, it's paramount that the
contents of a dataset do not spawn multiple partitions, specially when one of the partitions
contains data that is not specific to the application being autofilled. For example, a dataset
should not contain fields for username, password, and credit card information. The reason for
this rule is that a malicious app could draft a view structure where the credit card fields
are not visible, so when the user selects a dataset from the username UI, the credit card info is
released to the application without the user knowledge. Similarly, it's recommended to always
protect a dataset that contains sensitive information by requiring dataset authentication
(see Dataset.Builder#setAuthentication(android.content.IntentSender)
), and to include
info about the "primary" field of the partition in the custom presentation for "secondary"
fields—that would prevent a malicious app from getting the "primary" fields without the
user realizing they're being released (for example, a malicious app could have fields for a
credit card number, verification code, and expiration date crafted in a way that just the latter
is visible; by explicitly indicating the expiration date is related to a given credit card
number, the service would be providing a visual clue for the users to check what would be
released upon selecting that field).
When the service detects that a screen has multiple partitions, it should return a
FillResponse
with just the datasets for the partition that originated the request (i.e.,
the partition that has the AssistStructure.ViewNode
whose
AssistStructure.ViewNode.isFocused()
returns true
); then if
the user selects a field from a different partition, the Android System will make another
onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
call for that partition,
and so on.
Notice that when the user autofill a partition with the data provided by the service and the
user did not change these fields, the autofilled value is sent back to the service in the
subsequent calls (and can be obtained by calling
AssistStructure.ViewNode.getAutofillValue()
). This is useful in the
cases where the service must create datasets for a partition based on the choice made in a
previous partition. For example, the 1st response for a screen that have credentials and address
partitions could be:
new FillResponse.Builder()
.addDataset(new Dataset.Builder() // partition 1 (credentials)
.setValue(id1, AutofillValue.forText("homer"), createPresentation("homer"))
.setValue(id2, AutofillValue.forText("D'OH!"), createPresentation("password for homer"))
.build())
.addDataset(new Dataset.Builder() // partition 1 (credentials)
.setValue(id1, AutofillValue.forText("flanders"), createPresentation("flanders"))
.setValue(id2, AutofillValue.forText("OkelyDokelyDo"), createPresentation("password for flanders"))
.build())
.setSaveInfo(new SaveInfo.Builder(SaveInfo.SAVE_DATA_TYPE_PASSWORD,
new AutofillId[] { id1, id2 })
.build())
.build();
Then if the user selected flanders
, the service would get a new
onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
call, with the values of
the fields id1
and id2
prepopulated, so the service could then fetch the address
for the Flanders account and return the following FillResponse
for the address partition:
new FillResponse.Builder()
.addDataset(new Dataset.Builder() // partition 2 (address)
.setValue(id3, AutofillValue.forText("744 Evergreen Terrace"), createPresentation("744 Evergreen Terrace")) // street
.setValue(id4, AutofillValue.forText("Springfield"), createPresentation("Springfield")) // city
.build())
.setSaveInfo(new SaveInfo.Builder(SaveInfo.SAVE_DATA_TYPE_PASSWORD | SaveInfo.SAVE_DATA_TYPE_ADDRESS,
new AutofillId[] { id1, id2 }) // username and password
.setOptionalIds(new AutofillId[] { id3, id4 }) // state and zipcode
.build())
.build();
When the service returns multiple FillResponse
, the last one overrides the previous;
that's why the SaveInfo
in the 2nd request above has the info for both partitions.
Package verification
When autofilling app-specific data (like username and password), the service must verify
the authenticity of the request by obtaining all signing certificates of the app being
autofilled, and only fulfilling the request when they match the values that were
obtained when the data was first saved — such verification is necessary to avoid phishing
attempts by apps that were sideloaded in the device with the same package name of another app.
Here's an example on how to achieve that by hashing the signing certificates:
private String getCertificatesHash(String packageName) throws Exception {
PackageManager pm = mContext.getPackageManager();
PackageInfo info = pm.getPackageInfo(packageName, PackageManager.GET_SIGNATURES);
ArrayList hashes = new ArrayList<>(info.signatures.length);
for (Signature sig : info.signatures) {
byte[] cert = sig.toByteArray();
MessageDigest md = MessageDigest.getInstance("SHA-256");
md.update(cert);
hashes.add(toHexString(md.digest()));
}
Collections.sort(hashes);
StringBuilder hash = new StringBuilder();
for (int i = 0; i < hashes.size(); i++) {
hash.append(hashes.get(i));
}
return hash.toString();
}
If the service did not store the signing certificates data the first time the data was saved
— for example, because the data was created by a previous version of the app that did not
use the Autofill Framework — the service should warn the user that the authenticity of the
app cannot be confirmed (see an example on how to show such warning in the
Web security section below), and if the user agrees,
then the service could save the data from the signing ceriticates for future use.
Ignoring views
If the service find views that cannot be autofilled (for example, a text field representing
the response to a Captcha challenge), it should mark those views as ignored by
calling FillResponse.Builder#setIgnoredIds(AutofillId...)
so the system does not trigger
a new onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
when these views are
focused.
Web security
When handling autofill requests that represent web pages (typically
view structures whose root's AssistStructure.ViewNode.getClassName()
is a WebView
), the service should take the following steps to verify if
the structure can be autofilled with the data associated with the app requesting it:
- Use the
AssistStructure.ViewNode.getWebDomain()
to get the
source of the document.
- Get the canonical domain using the
Public Suffix List (see example below).
- Use Digital Asset Links
to obtain the package name and certificate fingerprint of the package corresponding to
the canonical domain.
- Make sure the certificate fingerprint matches the value returned by Package Manager
(see "Package verification" section above).
Here's an example on how to get the canonical domain using
Guava:
private static String getCanonicalDomain(String domain) {
InternetDomainName idn = InternetDomainName.from(domain);
while (idn != null && !idn.isTopPrivateDomain()) {
idn = idn.parent();
}
return idn == null ? null : idn.toString();
}
If the association between the web domain and app package cannot be verified through the steps
above, but the service thinks that it is appropriate to fill persisted credentials that are
stored for the web domain, the service should warn the user about the potential data
leakage first, and ask for the user to confirm. For example, the service could:
- Create a dataset that requires
authentication
to
unlock.
- Include the web domain in the custom presentation for the
dataset value
.
- When the user selects that dataset, show a disclaimer dialog explaining that the app is
requesting credentials for a web domain, but the service could not verify if the app owns
that domain. If the user agrees, then the service can unlock the dataset.
- Similarly, when adding a
SaveInfo
object for the request, the service should
include the above disclaimer in the SaveInfo.Builder#setDescription(CharSequence)
.
This same procedure could also be used when the autofillable data is contained inside an
IFRAME
, in which case the WebView generates a new autofill context when a node inside
the IFRAME
is focused, with the root node containing the IFRAME
's src
attribute on AssistStructure.ViewNode.getWebDomain()
. A typical and
legitimate use case for this scenario is a financial app that allows the user
to login on different bank accounts. For example, a financial app my_financial_app
could
use a WebView that loads contents from banklogin.my_financial_app.com
, which contains an
IFRAME
node whose src
attribute is login.some_bank.com
. When fulfilling
that request, the service could add an
authenticated dataset
whose presentation displays "Username for some_bank.com" and
"Password for some_bank.com". Then when the user taps one of these options, the service
shows the disclaimer dialog explaining that selecting that option would release the
login.some_bank.com
credentials to the my_financial_app
; if the user agrees,
then the service returns an unlocked dataset with the some_bank.com
credentials.
Note: The autofill service could also add well-known browser apps into an allowlist and
skip the verifications above, as long as the service can verify the authenticity of the browser
app by checking its signing certificate.
Saving when data is split in multiple screens
Apps often split the user data in multiple screens in the same activity, specially in
activities used to create a new user account. For example, the first screen asks for a username,
and if the username is available, it moves to a second screen, which asks for a password.
It's tricky to handle save for autofill in these situations, because the autofill service must
wait until the user enters both fields before the autofill save UI can be shown. But it can be
done by following the steps below:
- In the first
fill request
, the service
adds a client state bundle
in
the response, containing the autofill ids of the partial fields present in the screen.
- In the second
fill request
, the service
retrieves the client state bundle
, gets the autofill ids
set in the previous request from the client state, and adds these ids and the
SaveInfo#FLAG_SAVE_ON_ALL_VIEWS_INVISIBLE
to the SaveInfo
used in the second
response.
- In the
save request
, the service uses the
proper fill contexts
to get the value of each field (there is one fill
context per fill request).
For example, in an app that uses 2 steps for the username and password fields, the workflow
would be:
// On first fill request
AutofillId usernameId = // parse from AssistStructure;
Bundle clientState = new Bundle();
clientState.putParcelable("usernameId", usernameId);
fillCallback.onSuccess(
new FillResponse.Builder()
.setClientState(clientState)
.setSaveInfo(new SaveInfo
.Builder(SaveInfo.SAVE_DATA_TYPE_USERNAME, new AutofillId[] {usernameId})
.build())
.build());
// On second fill request
Bundle clientState = fillRequest.getClientState();
AutofillId usernameId = clientState.getParcelable("usernameId");
AutofillId passwordId = // parse from AssistStructure
clientState.putParcelable("passwordId", passwordId);
fillCallback.onSuccess(
new FillResponse.Builder()
.setClientState(clientState)
.setSaveInfo(new SaveInfo
.Builder(SaveInfo.SAVE_DATA_TYPE_USERNAME | SaveInfo.SAVE_DATA_TYPE_PASSWORD,
new AutofillId[] {usernameId, passwordId})
.setFlags(SaveInfo.FLAG_SAVE_ON_ALL_VIEWS_INVISIBLE)
.build())
.build());
// On save request
Bundle clientState = saveRequest.getClientState();
AutofillId usernameId = clientState.getParcelable("usernameId");
AutofillId passwordId = clientState.getParcelable("passwordId");
List fillContexts = saveRequest.getFillContexts();
FillContext usernameContext = fillContexts.get(0);
ViewNode usernameNode = findNodeByAutofillId(usernameContext.getStructure(), usernameId);
AutofillValue username = usernameNode.getAutofillValue().getTextValue().toString();
FillContext passwordContext = fillContexts.get(1);
ViewNode passwordNode = findNodeByAutofillId(passwordContext.getStructure(), passwordId);
AutofillValue password = passwordNode.getAutofillValue().getTextValue().toString();
save(username, password);
Privacy
The onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
method is called
without the user content. The Android system strips some properties of the
view nodes
passed to this call, but not all
of them. For example, the data provided in the ViewStructure.HtmlInfo
objects set by WebView
is never stripped out.
Because this data could contain PII (Personally Identifiable Information, such as username or
email address), the service should only use it locally (i.e., in the app's process) for
heuristics purposes, but it should not be sent to external servers.
Metrics and field classification
The service can call getFillEventHistory()
to get metrics representing the user
actions, and then use these metrics to improve its heuristics.
Prior to Android Build.VERSION_CODES.P
, the metrics covered just the
scenarios where the service knew how to autofill an activity, but Android
Build.VERSION_CODES.P
introduced a new mechanism called field classification,
which allows the service to dynamically classify the meaning of fields based on the existing user
data known by the service.
Typically, field classification can be used to detect fields that can be autofilled with
user data that is not associated with a specific app—such as email and physical
address. Once the service identifies that a such field was manually filled by the user, the
service could use this signal to improve its heuristics on subsequent requests (for example, by
infering which resource ids are associated with known fields).
The field classification workflow involves 4 steps:
- Set the user data through
AutofillManager#setUserData(UserData)
. This data is
cached until the system restarts (or the service is disabled), so it doesn't need to be set for
all requests.
- Identify which fields should be analysed by calling
FillResponse.Builder#setFieldClassificationIds(AutofillId...)
.
- Verify the results through
FillEventHistory.Event#getFieldsClassification()
.
- Use the results to dynamically create
Dataset
or SaveInfo
objects in
subsequent requests.
The field classification is an expensive operation and should be used carefully, otherwise it
can reach its rate limit and get blocked by the Android System. Ideally, it should be used just
in cases where the service could not determine how an activity can be autofilled, but it has a
strong suspicious that it could. For example, if an activity has four or more fields and one of
them is a list, chances are that these are address fields (like address, city, state, and
zip code).
Compatibility mode
Apps that use standard Android widgets support autofill out-of-the-box and need to do
very little to improve their user experience (annotating autofillable views and providing
autofill hints). However, some apps (typically browsers) do their own rendering and the rendered
content may contain semantic structure that needs to be surfaced to the autofill framework. The
platform exposes APIs to achieve this, however it could take some time until these apps implement
autofill support.
To enable autofill for such apps the platform provides a compatibility mode in which the
platform would fall back to the accessibility APIs to generate the state reported to autofill
services and fill data. This mode needs to be explicitly requested for a given package up
to a specified max version code allowing clean migration path when the target app begins to
support autofill natively. Note that enabling compatibility may degrade performance for the
target package and should be used with caution. The platform supports creating an allowlist for
including which packages can be targeted in compatibility mode to ensure this mode is used only
when needed and as long as needed.
You can request compatibility mode for packages of interest in the meta-data resource
associated with your service. Below is a sample service declaration:
<service android:name=".MyAutofillService"
android:permission="android.permission.BIND_AUTOFILL_SERVICE">
<intent-filter>
<action android:name="android.service.autofill.AutofillService" />
</intent-filter>
<meta-data android:name="android.autofill" android:resource="@xml/autofillservice" />
</service>
In the XML file you can specify one or more packages for which to enable compatibility
mode. Below is a sample meta-data declaration:
<autofill-service xmlns:android="http://schemas.android.com/apk/res/android">
<compatibility-package android:name="foo.bar.baz" android:maxLongVersionCode="1000000000"/>
</autofill-service>
Notice that compatibility mode has limitations such as:
- No manual autofill requests. Hence, the
FillRequest
flags
never have the FillRequest#FLAG_MANUAL_REQUEST
flag.
- The value of password fields are most likely masked—for example,
****
instead
of 1234
. Hence, you must be careful when using these values to avoid updating the user
data with invalid input. For example, when you parse the FillRequest
and detect a
password field, you could check if its
input type
has password flags and if so, don't add it to the SaveInfo
object.
- The autofill context is not always
committed
when an HTML
form is submitted. Hence, you must use other mechanisms to trigger save, such as setting the
SaveInfo#FLAG_SAVE_ON_ALL_VIEWS_INVISIBLE
flag on SaveInfo.Builder#setFlags(int)
or using SaveInfo.Builder#setTriggerId(AutofillId)
.
- Browsers often provide their own autofill management system. When both the browser and
the platform render an autofill dialog at the same time, the result can be confusing to the user.
Such browsers typically offer an option for users to disable autofill, so your service should
also allow users to disable compatiblity mode for specific apps. That way, it is up to the user
to decide which autofill mechanism—the browser's or the platform's—should be used.
Summary
Inherited constants |
From class
android.app.Service
int |
START_CONTINUATION_MASK
Bits returned by onStartCommand(Intent, int, int) describing how to continue
the service if it is killed.
|
int |
START_FLAG_REDELIVERY
This flag is set in onStartCommand(Intent, int, int) if the Intent is a
re-delivery of a previously delivered intent, because the service
had previously returned START_REDELIVER_INTENT but had been
killed before calling stopSelf(int) for that Intent.
|
int |
START_FLAG_RETRY
This flag is set in onStartCommand(Intent, int, int) if the Intent is a
retry because the original attempt never got to or returned from
onStartCommand(android.content.Intent, int, int) .
|
int |
START_NOT_STICKY
Constant to return from onStartCommand(Intent, int, int) : if this service's
process is killed while it is started (after returning from
onStartCommand(Intent, int, int) ), and there are no new start intents to
deliver to it, then take the service out of the started state and
don't recreate until a future explicit call to
Context.startService(Intent) .
|
int |
START_REDELIVER_INTENT
Constant to return from onStartCommand(Intent, int, int) : if this service's
process is killed while it is started (after returning from
onStartCommand(Intent, int, int) ), then it will be scheduled for a restart
and the last delivered Intent re-delivered to it again via
onStartCommand(Intent, int, int) .
|
int |
START_STICKY
Constant to return from onStartCommand(Intent, int, int) : if this service's
process is killed while it is started (after returning from
onStartCommand(Intent, int, int) ), then leave it in the started state but
don't retain this delivered intent.
|
int |
START_STICKY_COMPATIBILITY
Constant to return from onStartCommand(Intent, int, int) : compatibility
version of START_STICKY that does not guarantee that
onStartCommand(Intent, int, int) will be called again after being killed.
|
int |
STOP_FOREGROUND_DETACH
Selector for stopForeground(int) : if set, the notification previously supplied
to startForeground(int, Notification) will be detached from the service's lifecycle.
|
int |
STOP_FOREGROUND_LEGACY
This constant was deprecated
in API level 33.
Use STOP_FOREGROUND_DETACH instead. The legacy
behavior was inconsistent, leading to bugs around unpredictable results.
|
int |
STOP_FOREGROUND_REMOVE
Selector for stopForeground(int) : if supplied, the notification previously
supplied to startForeground(int, Notification) will be cancelled and removed from display.
|
|
From class
android.content.Context
String |
ACCESSIBILITY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
AccessibilityManager for giving the user
feedback for UI events through the registered event listeners.
|
String |
ACCOUNT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
AccountManager for receiving intents at a
time of your choosing.
|
String |
ACTIVITY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
ActivityManager for interacting with the global
system state.
|
String |
ALARM_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
AlarmManager for receiving intents at a
time of your choosing.
|
String |
APPWIDGET_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
AppWidgetManager for accessing AppWidgets.
|
String |
APP_OPS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
AppOpsManager for tracking application operations
on the device.
|
String |
APP_SEARCH_SERVICE
Use with getSystemService(java.lang.String) to retrieve an
AppSearchManager for
indexing and querying app data managed by the system.
|
String |
AUDIO_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
AudioManager for handling management of volume,
ringer modes and audio routing.
|
String |
BATTERY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
BatteryManager for managing battery state.
|
int |
BIND_ABOVE_CLIENT
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : indicates that the client application
binding to this service considers the service to be more important than
the app itself.
|
int |
BIND_ADJUST_WITH_ACTIVITY
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : If binding from an activity, allow the
target service's process importance to be raised based on whether the
activity is visible to the user, regardless whether another flag is
used to reduce the amount that the client process's overall importance
is used to impact it.
|
int |
BIND_ALLOW_ACTIVITY_STARTS
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : If binding from an app that is visible, the bound service is
allowed to start an activity from background.
|
int |
BIND_ALLOW_OOM_MANAGEMENT
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : allow the process hosting the bound
service to go through its normal memory management.
|
int |
BIND_AUTO_CREATE
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : automatically create the service as long
as the binding exists.
|
int |
BIND_DEBUG_UNBIND
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : include debugging help for mismatched
calls to unbind.
|
int |
BIND_EXTERNAL_SERVICE
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : The service being bound is an
isolated ,
external service.
|
long |
BIND_EXTERNAL_SERVICE_LONG
Works in the same way as BIND_EXTERNAL_SERVICE , but it's defined as a long
value that is compatible to BindServiceFlags .
|
int |
BIND_IMPORTANT
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : this service is very important to
the client, so should be brought to the foreground process level
when the client is.
|
int |
BIND_INCLUDE_CAPABILITIES
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : If binding from an app that has specific capabilities
due to its foreground state such as an activity or foreground service, then this flag will
allow the bound app to get the same capabilities, as long as it has the required permissions
as well.
|
int |
BIND_NOT_FOREGROUND
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : don't allow this binding to raise
the target service's process to the foreground scheduling priority.
|
int |
BIND_NOT_PERCEPTIBLE
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : If binding from an app that is visible or user-perceptible,
lower the target service's importance to below the perceptible level.
|
int |
BIND_PACKAGE_ISOLATED_PROCESS
Flag for bindIsolatedService(Intent, BindServiceFlags, String, Executor, ServiceConnection) : Bind the service into a shared isolated process,
but only with other isolated services from the same package that declare the same process
name.
|
int |
BIND_SHARED_ISOLATED_PROCESS
Flag for bindIsolatedService(Intent, BindServiceFlags, String, Executor, ServiceConnection) : Bind the service into a shared isolated process.
|
int |
BIND_WAIVE_PRIORITY
Flag for bindService(Intent, BindServiceFlags, Executor, ServiceConnection) : don't impact the scheduling or
memory management priority of the target service's hosting process.
|
String |
BIOMETRIC_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
BiometricManager for handling
biometric and PIN/pattern/password authentication.
|
String |
BLOB_STORE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a BlobStoreManager for contributing and accessing data blobs
from the blob store maintained by the system.
|
String |
BLUETOOTH_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
BluetoothManager for using Bluetooth.
|
String |
BUGREPORT_SERVICE
Service to capture a bugreport.
|
String |
CAMERA_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
CameraManager for interacting with
camera devices.
|
String |
CAPTIONING_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
CaptioningManager for obtaining
captioning properties and listening for changes in captioning
preferences.
|
String |
CARRIER_CONFIG_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
CarrierConfigManager for reading carrier configuration values.
|
String |
CLIPBOARD_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
ClipboardManager for accessing and modifying
the contents of the global clipboard.
|
String |
COMPANION_DEVICE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
CompanionDeviceManager for managing companion devices
|
String |
CONNECTIVITY_DIAGNOSTICS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a ConnectivityDiagnosticsManager for performing network connectivity diagnostics
as well as receiving network connectivity information from the system.
|
String |
CONNECTIVITY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a ConnectivityManager for handling management of
network connections.
|
String |
CONSUMER_IR_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
ConsumerIrManager for transmitting infrared
signals from the device.
|
String |
CONTACT_KEYS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
E2eeContactKeysManager to managing contact keys.
|
int |
CONTEXT_IGNORE_SECURITY
Flag for use with createPackageContext(String, int) : ignore any security
restrictions on the Context being requested, allowing it to always
be loaded.
|
int |
CONTEXT_INCLUDE_CODE
Flag for use with createPackageContext(String, int) : include the application
code with the context.
|
int |
CONTEXT_RESTRICTED
Flag for use with createPackageContext(String, int) : a restricted context may
disable specific features.
|
String |
CREDENTIAL_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
CredentialManager to authenticate a user to your app.
|
String |
CROSS_PROFILE_APPS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
CrossProfileApps for cross profile operations.
|
int |
DEVICE_ID_DEFAULT
The default device ID, which is the ID of the primary (non-virtual) device.
|
int |
DEVICE_ID_INVALID
Invalid device ID.
|
String |
DEVICE_LOCK_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
DeviceLockManager .
|
String |
DEVICE_POLICY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
DevicePolicyManager for working with global
device policy management.
|
String |
DISPLAY_HASH_SERVICE
Use with getSystemService(java.lang.String) to access
DisplayHashManager to handle display hashes.
|
String |
DISPLAY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
DisplayManager for interacting with display devices.
|
String |
DOMAIN_VERIFICATION_SERVICE
Use with getSystemService(java.lang.String) to access
DomainVerificationManager to retrieve approval and
user state for declared web domains.
|
String |
DOWNLOAD_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
DownloadManager for requesting HTTP downloads.
|
String |
DROPBOX_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
DropBoxManager instance for recording
diagnostic logs.
|
String |
EUICC_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
EuiccManager to manage the device eUICC (embedded SIM).
|
String |
FILE_INTEGRITY_SERVICE
Use with getSystemService(java.lang.String) to retrieve an
FileIntegrityManager .
|
String |
FINGERPRINT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
FingerprintManager for handling management
of fingerprints.
|
String |
GAME_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
GameManager .
|
String |
GRAMMATICAL_INFLECTION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
GrammaticalInflectionManager .
|
String |
HARDWARE_PROPERTIES_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
HardwarePropertiesManager for accessing the hardware properties service.
|
String |
HEALTHCONNECT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
HealthConnectManager .
|
String |
INPUT_METHOD_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
InputMethodManager for accessing input
methods.
|
String |
INPUT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
InputManager for interacting with input devices.
|
String |
IPSEC_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
IpSecManager for encrypting Sockets or Networks with
IPSec.
|
String |
JOB_SCHEDULER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a JobScheduler instance for managing occasional
background tasks.
|
String |
KEYGUARD_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
KeyguardManager for controlling keyguard.
|
String |
LAUNCHER_APPS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
LauncherApps for querying and monitoring launchable apps across
profiles of a user.
|
String |
LAYOUT_INFLATER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
LayoutInflater for inflating layout resources in this
context.
|
String |
LOCALE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
LocaleManager .
|
String |
LOCATION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a LocationManager for controlling location
updates.
|
String |
MEDIA_COMMUNICATION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
MediaCommunicationManager
for managing MediaSession2 .
|
String |
MEDIA_METRICS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
MediaMetricsManager for interacting with media metrics
on the device.
|
String |
MEDIA_PROJECTION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a MediaProjectionManager instance for managing
media projection sessions.
|
String |
MEDIA_ROUTER_SERVICE
Use with getSystemService(Class) to retrieve a
MediaRouter for controlling and managing
routing of media.
|
String |
MEDIA_SESSION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
MediaSessionManager for managing media Sessions.
|
String |
MIDI_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
MidiManager for accessing the MIDI service.
|
int |
MODE_APPEND
File creation mode: for use with openFileOutput(String, int) , if the file
already exists then write data to the end of the existing file
instead of erasing it.
|
int |
MODE_ENABLE_WRITE_AHEAD_LOGGING
Database open flag: when set, the database is opened with write-ahead
logging enabled by default.
|
int |
MODE_MULTI_PROCESS
This constant was deprecated
in API level 23.
MODE_MULTI_PROCESS does not work reliably in
some versions of Android, and furthermore does not provide any
mechanism for reconciling concurrent modifications across
processes. Applications should not attempt to use it. Instead,
they should use an explicit cross-process data management
approach such as ContentProvider .
|
int |
MODE_NO_LOCALIZED_COLLATORS
Database open flag: when set, the database is opened without support for
localized collators.
|
int |
MODE_PRIVATE
File creation mode: the default mode, where the created file can only
be accessed by the calling application (or all applications sharing the
same user ID).
|
int |
MODE_WORLD_READABLE
This constant was deprecated
in API level 17.
Creating world-readable files is very dangerous, and likely
to cause security holes in applications. It is strongly
discouraged; instead, applications should use more formal
mechanism for interactions such as ContentProvider ,
BroadcastReceiver , and Service .
There are no guarantees that this access mode will remain on
a file, such as when it goes through a backup and restore.
|
int |
MODE_WORLD_WRITEABLE
This constant was deprecated
in API level 17.
Creating world-writable files is very dangerous, and likely
to cause security holes in applications. It is strongly
discouraged; instead, applications should use more formal
mechanism for interactions such as ContentProvider ,
BroadcastReceiver , and Service .
There are no guarantees that this access mode will remain on
a file, such as when it goes through a backup and restore.
|
String |
NETWORK_STATS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a NetworkStatsManager for querying network usage stats.
|
String |
NFC_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
NfcManager for using NFC.
|
String |
NOTIFICATION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
NotificationManager for informing the user of
background events.
|
String |
NSD_SERVICE
Use with getSystemService(java.lang.String) to retrieve a NsdManager for handling management of network service
discovery
|
String |
OVERLAY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a OverlayManager for managing overlay packages.
|
String |
PEOPLE_SERVICE
Use with getSystemService(java.lang.String) to access a PeopleManager to interact
with your published conversations.
|
String |
PERFORMANCE_HINT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
PerformanceHintManager for accessing the performance hinting service.
|
String |
PERSISTENT_DATA_BLOCK_SERVICE
Use with getSystemService(java.lang.String) to retrieve a PersistentDataBlockManager instance
for interacting with a storage device that lives across factory resets.
|
String |
POWER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
PowerManager for controlling power management,
including "wake locks," which let you keep the device on while
you're running long tasks.
|
String |
PRINT_SERVICE
PrintManager for printing and managing
printers and print tasks.
|
String |
PROFILING_SERVICE
Use with getSystemService(java.lang.String) to retrieve an
ProfilingManager .
|
int |
RECEIVER_EXPORTED
Flag for registerReceiver(BroadcastReceiver, IntentFilter) : The receiver can receive broadcasts from other Apps.
|
int |
RECEIVER_NOT_EXPORTED
Flag for registerReceiver(BroadcastReceiver, IntentFilter) : The receiver cannot receive broadcasts from other Apps.
|
int |
RECEIVER_VISIBLE_TO_INSTANT_APPS
Flag for registerReceiver(BroadcastReceiver, IntentFilter) : The receiver can receive broadcasts from Instant Apps.
|
String |
RESTRICTIONS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
RestrictionsManager for retrieving application restrictions
and requesting permissions for restricted operations.
|
String |
ROLE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a RoleManager
for managing roles.
|
String |
SEARCH_SERVICE
Use with getSystemService(java.lang.String) to retrieve a SearchManager for handling searches.
|
String |
SECURITY_STATE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
SecurityStateManager for accessing the security state manager service.
|
String |
SENSOR_SERVICE
Use with getSystemService(java.lang.String) to retrieve a SensorManager for accessing sensors.
|
String |
SHORTCUT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
ShortcutManager for accessing the launcher shortcut service.
|
String |
STATUS_BAR_SERVICE
Use with getSystemService(java.lang.String) to retrieve a StatusBarManager for interacting with the status bar and quick settings.
|
String |
STORAGE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a StorageManager for accessing system storage
functions.
|
String |
STORAGE_STATS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a StorageStatsManager for accessing system storage
statistics.
|
String |
SYSTEM_HEALTH_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
SystemHealthManager for accessing system health (battery, power,
memory, etc) metrics.
|
String |
TELECOM_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
TelecomManager to manage telecom-related features
of the device.
|
String |
TELEPHONY_IMS_SERVICE
Use with getSystemService(java.lang.String) to retrieve an
ImsManager .
|
String |
TELEPHONY_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
TelephonyManager for handling management the
telephony features of the device.
|
String |
TELEPHONY_SUBSCRIPTION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
SubscriptionManager for handling management the
telephony subscriptions of the device.
|
String |
TEXT_CLASSIFICATION_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
TextClassificationManager for text classification services.
|
String |
TEXT_SERVICES_MANAGER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
TextServicesManager for accessing
text services.
|
String |
TV_INPUT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
TvInputManager for interacting with TV inputs
on the device.
|
String |
TV_INTERACTIVE_APP_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
TvInteractiveAppManager for interacting with TV
interactive applications on the device.
|
String |
UI_MODE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
UiModeManager for controlling UI modes.
|
String |
USAGE_STATS_SERVICE
Use with getSystemService(java.lang.String) to retrieve a UsageStatsManager for querying device usage stats.
|
String |
USB_SERVICE
Use with getSystemService(java.lang.String) to retrieve a UsbManager for access to USB devices (as a USB host)
and for controlling this device's behavior as a USB device.
|
String |
USER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
UserManager for managing users on devices that support multiple users.
|
String |
VIBRATOR_MANAGER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a VibratorManager
for accessing the device vibrators, interacting with individual ones and playing synchronized
effects on multiple vibrators.
|
String |
VIBRATOR_SERVICE
This constant was deprecated
in API level 31.
Use VibratorManager to retrieve the default system vibrator.
|
String |
VIRTUAL_DEVICE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
VirtualDeviceManager for managing virtual devices.
|
String |
VPN_MANAGEMENT_SERVICE
Use with getSystemService(java.lang.String) to retrieve a VpnManager to
manage profiles for the platform built-in VPN.
|
String |
WALLPAPER_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
com.android.server.WallpaperService for accessing wallpapers.
|
String |
WIFI_AWARE_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
WifiAwareManager for handling management of
Wi-Fi Aware.
|
String |
WIFI_P2P_SERVICE
Use with getSystemService(java.lang.String) to retrieve a WifiP2pManager for handling management of
Wi-Fi peer-to-peer connections.
|
String |
WIFI_RTT_RANGING_SERVICE
Use with getSystemService(java.lang.String) to retrieve a WifiRttManager for ranging devices with wifi.
|
String |
WIFI_SERVICE
Use with getSystemService(java.lang.String) to retrieve a WifiManager for handling management of
Wi-Fi access.
|
String |
WINDOW_SERVICE
Use with getSystemService(java.lang.String) to retrieve a
WindowManager for accessing the system's window
manager.
|
|
From interface
android.content.ComponentCallbacks2
|
Inherited methods |
From class
android.app.Service
void
|
attachBaseContext(Context newBase)
Set the base context for this ContextWrapper.
|
void
|
dump(FileDescriptor fd, PrintWriter writer, String[] args)
Print the Service's state into the given stream.
|
final
Application
|
getApplication()
Return the application that owns this service.
|
final
int
|
getForegroundServiceType()
If the service has become a foreground service by calling
startForeground(int, android.app.Notification)
or startForeground(int, android.app.Notification, int) , getForegroundServiceType()
returns the current foreground service type.
|
abstract
IBinder
|
onBind(Intent intent)
Return the communication channel to the service.
|
void
|
onConfigurationChanged(Configuration newConfig)
Called by the system when the device configuration changes while your
component is running.
|
void
|
onCreate()
Called by the system when the service is first created.
|
void
|
onDestroy()
Called by the system to notify a Service that it is no longer used and is being removed.
|
void
|
onLowMemory()
This is called when the overall system is running low on memory, and
actively running processes should trim their memory usage.
|
void
|
onRebind(Intent intent)
Called when new clients have connected to the service, after it had
previously been notified that all had disconnected in its
onUnbind(Intent) .
|
void
|
onStart(Intent intent, int startId)
This method was deprecated
in API level 15.
Implement onStartCommand(android.content.Intent, int, int) instead.
|
int
|
onStartCommand(Intent intent, int flags, int startId)
Called by the system every time a client explicitly starts the service by calling
Context.startService(Intent) , providing the arguments it supplied and a
unique integer token representing the start request.
|
void
|
onTaskRemoved(Intent rootIntent)
This is called if the service is currently running and the user has
removed a task that comes from the service's application.
|
void
|
onTimeout(int startId, int fgsType)
Callback called when a particular foreground service type has timed out.
|
void
|
onTimeout(int startId)
Callback called on timeout for ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE .
|
void
|
onTrimMemory(int level)
Called when the operating system has determined that it is a good
time for a process to trim unneeded memory from its process.
|
boolean
|
onUnbind(Intent intent)
Called when all clients have disconnected from a particular interface
published by the service.
|
final
void
|
startForeground(int id, Notification notification)
If your service is started (running through Context#startService(Intent) ), then
also make this service run in the foreground, supplying the ongoing
notification to be shown to the user while in this state.
|
final
void
|
startForeground(int id, Notification notification, int foregroundServiceType)
An overloaded version of startForeground(int, android.app.Notification) with additional
foregroundServiceType parameter.
|
final
void
|
stopForeground(int notificationBehavior)
Remove this service from foreground state, allowing it to be killed if
more memory is needed.
|
final
void
|
stopForeground(boolean removeNotification)
This method was deprecated
in API level 33.
call stopForeground(int) and pass either
STOP_FOREGROUND_REMOVE or STOP_FOREGROUND_DETACH
explicitly instead.
|
final
void
|
stopSelf()
Stop the service, if it was previously started.
|
final
void
|
stopSelf(int startId)
Old version of stopSelfResult(int) that doesn't return a result.
|
final
boolean
|
stopSelfResult(int startId)
Stop the service if the most recent time it was started was
startId.
|
|
From class
android.content.ContextWrapper
void
|
attachBaseContext(Context base)
Set the base context for this ContextWrapper.
|
boolean
|
bindIsolatedService(Intent service, int flags, String instanceName, Executor executor, ServiceConnection conn)
Variation of bindService(Intent, BindServiceFlags, Executor, ServiceConnection) that, in the specific case of isolated
services, allows the caller to generate multiple instances of a service
from a single component declaration.
|
boolean
|
bindService(Intent service, int flags, Executor executor, ServiceConnection conn)
Same as bindService(Intent, ServiceConnection, int) with executor to control ServiceConnection
callbacks.
|
boolean
|
bindService(Intent service, ServiceConnection conn, Context.BindServiceFlags flags)
See bindService(android.content.Intent, android.content.ServiceConnection, int)
Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.
|
boolean
|
bindService(Intent service, ServiceConnection conn, int flags)
Connects to an application service, creating it if needed.
|
boolean
|
bindService(Intent service, Context.BindServiceFlags flags, Executor executor, ServiceConnection conn)
See bindService(android.content.Intent, int, java.util.concurrent.Executor, android.content.ServiceConnection)
Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.
|
int
|
checkCallingOrSelfPermission(String permission)
Determine whether the calling process of an IPC or you have been
granted a particular permission.
|
int
|
checkCallingOrSelfUriPermission(Uri uri, int modeFlags)
Determine whether the calling process of an IPC or you has been granted
permission to access a specific URI.
|
int[]
|
checkCallingOrSelfUriPermissions(List<Uri> uris, int modeFlags)
Determine whether the calling process of an IPC or you has been granted
permission to access a list of URIs.
|
int
|
checkCallingPermission(String permission)
Determine whether the calling process of an IPC you are handling has been
granted a particular permission.
|
int
|
checkCallingUriPermission(Uri uri, int modeFlags)
Determine whether the calling process and uid has been
granted permission to access a specific URI.
|
int[]
|
checkCallingUriPermissions(List<Uri> uris, int modeFlags)
Determine whether the calling process and uid has been
granted permission to access a list of URIs.
|
int
|
checkContentUriPermissionFull(Uri uri, int pid, int uid, int modeFlags)
Determine whether a particular process and uid has been granted
permission to access a specific content URI.
|
int
|
checkPermission(String permission, int pid, int uid)
Determine whether the given permission is allowed for a particular
process and user ID running in the system.
|
int
|
checkSelfPermission(String permission)
Determine whether you have been granted a particular permission.
|
int
|
checkUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags)
Check both a Uri and normal permission.
|
int
|
checkUriPermission(Uri uri, int pid, int uid, int modeFlags)
Determine whether a particular process and uid has been granted
permission to access a specific URI.
|
int[]
|
checkUriPermissions(List<Uri> uris, int pid, int uid, int modeFlags)
Determine whether a particular process and uid has been granted
permission to access a list of URIs.
|
void
|
clearWallpaper()
This method is deprecated.
Use WallpaperManager.clear() instead.
This method requires the caller to hold the permission
Manifest.permission.SET_WALLPAPER .
|
Context
|
createAttributionContext(String attributionTag)
Return a new Context object for the current Context but attribute to a different tag.
|
Context
|
createConfigurationContext(Configuration overrideConfiguration)
Return a new Context object for the current Context but whose resources
are adjusted to match the given Configuration.
|
Context
|
createContext(ContextParams contextParams)
Creates a context with specific properties and behaviors.
|
Context
|
createDeviceContext(int deviceId)
Returns a new Context object from the current context but with device association
given by the deviceId .
|
Context
|
createDeviceProtectedStorageContext()
Return a new Context object for the current Context but whose storage
APIs are backed by device-protected storage.
|
Context
|
createDisplayContext(Display display)
Returns a new Context object from the current context but with resources
adjusted to match the metrics of display .
|
Context
|
createPackageContext(String packageName, int flags)
Return a new Context object for the given application name.
|
Context
|
createWindowContext(int type, Bundle options)
Creates a Context for a non-activity window.
|
Context
|
createWindowContext(Display display, int type, Bundle options)
Creates a Context for a non-activity window on the given
Display .
|
String[]
|
databaseList()
Returns an array of strings naming the private databases associated with
this Context's application package.
|
boolean
|
deleteDatabase(String name)
Delete an existing private SQLiteDatabase associated with this Context's
application package.
|
boolean
|
deleteFile(String name)
Delete the given private file associated with this Context's
application package.
|
boolean
|
deleteSharedPreferences(String name)
Delete an existing shared preferences file.
|
void
|
enforceCallingOrSelfPermission(String permission, String message)
If neither you nor the calling process of an IPC you are
handling has been granted a particular permission, throw a
SecurityException .
|
void
|
enforceCallingOrSelfUriPermission(Uri uri, int modeFlags, String message)
If the calling process of an IPC or you has not been
granted permission to access a specific URI, throw SecurityException .
|
void
|
enforceCallingPermission(String permission, String message)
If the calling process of an IPC you are handling has not been
granted a particular permission, throw a SecurityException .
|
void
|
enforceCallingUriPermission(Uri uri, int modeFlags, String message)
If the calling process and uid has not been granted
permission to access a specific URI, throw SecurityException .
|
void
|
enforcePermission(String permission, int pid, int uid, String message)
If the given permission is not allowed for a particular process
and user ID running in the system, throw a SecurityException .
|
void
|
enforceUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags, String message)
Enforce both a Uri and normal permission.
|
void
|
enforceUriPermission(Uri uri, int pid, int uid, int modeFlags, String message)
If a particular process and uid has not been granted
permission to access a specific URI, throw SecurityException .
|
String[]
|
fileList()
Returns an array of strings naming the private files associated with
this Context's application package.
|
Context
|
getApplicationContext()
Return the context of the single, global Application object of the
current process.
|
ApplicationInfo
|
getApplicationInfo()
Return the full application info for this context's package.
|
AssetManager
|
getAssets()
Returns an AssetManager instance for the application's package.
|
AttributionSource
|
getAttributionSource()
|
Context
|
getBaseContext()
|
File
|
getCacheDir()
Returns the absolute path to the application specific cache directory on
the filesystem.
|
ClassLoader
|
getClassLoader()
Return a class loader you can use to retrieve classes in this package.
|
File
|
getCodeCacheDir()
Returns the absolute path to the application specific cache directory on
the filesystem designed for storing cached code.
|
ContentResolver
|
getContentResolver()
Return a ContentResolver instance for your application's package.
|
File
|
getDataDir()
Returns the absolute path to the directory on the filesystem where all
private files belonging to this app are stored.
|
File
|
getDatabasePath(String name)
Returns the absolute path on the filesystem where a database created with
openOrCreateDatabase(String, int, CursorFactory) is stored.
|
int
|
getDeviceId()
Gets the device ID this context is associated with.
|
File
|
getDir(String name, int mode)
Retrieve, creating if needed, a new directory in which the application
can place its own custom data files.
|
Display
|
getDisplay()
Get the display this context is associated with.
|
File
|
getExternalCacheDir()
Returns absolute path to application-specific directory on the primary
shared/external storage device where the application can place cache
files it owns.
|
File[]
|
getExternalCacheDirs()
Returns absolute paths to application-specific directories on all
shared/external storage devices where the application can place cache
files it owns.
|
File
|
getExternalFilesDir(String type)
Returns the absolute path to the directory on the primary shared/external
storage device where the application can place persistent files it owns.
|
File[]
|
getExternalFilesDirs(String type)
Returns absolute paths to application-specific directories on all
shared/external storage devices where the application can place
persistent files it owns.
|
File[]
|
getExternalMediaDirs()
This method is deprecated.
These directories still exist and are scanned, but developers
are encouraged to migrate to inserting content into a
MediaStore collection directly, as any app can
contribute new media to MediaStore with no
permissions required, starting in
Build.VERSION_CODES.Q .
|
File
|
getFileStreamPath(String name)
Returns the absolute path on the filesystem where a file created with
openFileOutput(String, int) is stored.
|
File
|
getFilesDir()
Returns the absolute path to the directory on the filesystem where files
created with openFileOutput(String, int) are stored.
|
Executor
|
getMainExecutor()
Return an Executor that will run enqueued tasks on the main
thread associated with this context.
|
Looper
|
getMainLooper()
Return the Looper for the main thread of the current process.
|
File
|
getNoBackupFilesDir()
Returns the absolute path to the directory on the filesystem similar to
getFilesDir() .
|
File
|
getObbDir()
Return the primary shared/external storage directory where this
application's OBB files (if there are any) can be found.
|
File[]
|
getObbDirs()
Returns absolute paths to application-specific directories on all
shared/external storage devices where the application's OBB files (if
there are any) can be found.
|
String
|
getPackageCodePath()
Return the full path to this context's primary Android package.
|
PackageManager
|
getPackageManager()
Return PackageManager instance to find global package information.
|
String
|
getPackageName()
Return the name of this application's package.
|
String
|
getPackageResourcePath()
Return the full path to this context's primary Android package.
|
ContextParams
|
getParams()
Return the set of parameters which this Context was created with, if it
was created via createContext(android.content.ContextParams) .
|
Resources
|
getResources()
Returns a Resources instance for the application's package.
|
SharedPreferences
|
getSharedPreferences(String name, int mode)
Retrieve and hold the contents of the preferences file 'name', returning
a SharedPreferences through which you can retrieve and modify its
values.
|
Object
|
getSystemService(String name)
Return the handle to a system-level service by name.
|
String
|
getSystemServiceName(Class<?> serviceClass)
Gets the name of the system-level service that is represented by the specified class.
|
Resources.Theme
|
getTheme()
Return the Theme object associated with this Context.
|
Drawable
|
getWallpaper()
This method is deprecated.
Use WallpaperManager.get() instead.
|
int
|
getWallpaperDesiredMinimumHeight()
This method is deprecated.
Use WallpaperManager.getDesiredMinimumHeight() instead.
|
int
|
getWallpaperDesiredMinimumWidth()
This method is deprecated.
Use WallpaperManager.getDesiredMinimumWidth() instead.
|
void
|
grantUriPermission(String toPackage, Uri uri, int modeFlags)
Grant permission to access a specific Uri to another package, regardless
of whether that package has general permission to access the Uri's
content provider.
|
boolean
|
isDeviceProtectedStorage()
Indicates if the storage APIs of this Context are backed by
device-protected storage.
|
boolean
|
isRestricted()
Indicates whether this Context is restricted.
|
boolean
|
moveDatabaseFrom(Context sourceContext, String name)
Move an existing database file from the given source storage context to
this context.
|
boolean
|
moveSharedPreferencesFrom(Context sourceContext, String name)
Move an existing shared preferences file from the given source storage
context to this context.
|
FileInputStream
|
openFileInput(String name)
Open a private file associated with this Context's application package
for reading.
|
FileOutputStream
|
openFileOutput(String name, int mode)
Open a private file associated with this Context's application package
for writing.
|
SQLiteDatabase
|
openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory, DatabaseErrorHandler errorHandler)
Open a new private SQLiteDatabase associated with this Context's
application package.
|
SQLiteDatabase
|
openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory)
Open a new private SQLiteDatabase associated with this Context's
application package.
|
Drawable
|
peekWallpaper()
This method is deprecated.
Use WallpaperManager.peek() instead.
|
void
|
registerComponentCallbacks(ComponentCallbacks callback)
Add a new ComponentCallbacks to the base application of the
Context, which will be called at the same times as the ComponentCallbacks
methods of activities and other components are called.
|
void
|
registerDeviceIdChangeListener(Executor executor, IntConsumer listener)
Adds a new device ID changed listener to the Context , which will be called when
the device association is changed by the system.
|
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter)
Register a BroadcastReceiver to be run in the main activity thread.
|
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter, int flags)
Register to receive intent broadcasts, with the receiver optionally being
exposed to Instant Apps.
|
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler, int flags)
Register to receive intent broadcasts, to run in the context of
scheduler.
|
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler)
Register to receive intent broadcasts, to run in the context of
scheduler.
|
void
|
removeStickyBroadcast(Intent intent)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
removeStickyBroadcastAsUser(Intent intent, UserHandle user)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
revokeSelfPermissionsOnKill(Collection<String> permissions)
Triggers the revocation of one or more permissions for the calling package.
|
void
|
revokeUriPermission(Uri uri, int modeFlags)
Remove all permissions to access a particular content provider Uri
that were previously added with grantUriPermission(String, Uri, int) or any other mechanism.
|
void
|
revokeUriPermission(String targetPackage, Uri uri, int modeFlags)
Remove permissions to access a particular content provider Uri
that were previously added with grantUriPermission(String, Uri, int) for a specific target
package.
|
void
|
sendBroadcast(Intent intent, String receiverPermission, Bundle options)
Broadcast the given intent to all interested BroadcastReceivers, allowing
an optional required permission to be enforced.
|
void
|
sendBroadcast(Intent intent, String receiverPermission)
Broadcast the given intent to all interested BroadcastReceivers, allowing
an optional required permission to be enforced.
|
void
|
sendBroadcast(Intent intent)
Broadcast the given intent to all interested BroadcastReceivers.
|
void
|
sendBroadcastAsUser(Intent intent, UserHandle user)
Version of sendBroadcast(android.content.Intent) that allows you to specify the
user the broadcast will be sent to.
|
void
|
sendBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission)
Version of sendBroadcast(android.content.Intent, java.lang.String) that allows you to specify the
user the broadcast will be sent to.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of
sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the App Op to enforce restrictions on which receivers
the broadcast will be sent to.
|
void
|
sendOrderedBroadcast(Intent intent, int initialCode, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, String initialData, Bundle initialExtras, Bundle options)
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of sendBroadcast(android.content.Intent) that allows you to
receive data back from the broadcast.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options)
Broadcast the given intent to all interested BroadcastReceivers, delivering
them one at a time to allow more preferred receivers to consume the
broadcast before it is delivered to less preferred receivers.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of sendBroadcast(android.content.Intent) that allows you to
receive data back from the broadcast.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission)
Broadcast the given intent to all interested BroadcastReceivers, delivering
them one at a time to allow more preferred receivers to consume the
broadcast before it is delivered to less preferred receivers.
|
void
|
sendOrderedBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of
sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle)
that allows you to specify the
user the broadcast will be sent to.
|
void
|
sendStickyBroadcast(Intent intent)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
sendStickyBroadcast(Intent intent, Bundle options)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
sendStickyBroadcastAsUser(Intent intent, UserHandle user)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
sendStickyOrderedBroadcast(Intent intent, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
sendStickyOrderedBroadcastAsUser(Intent intent, UserHandle user, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
setTheme(int resid)
Set the base theme for this context.
|
void
|
setWallpaper(Bitmap bitmap)
This method is deprecated.
Use WallpaperManager.set() instead.
This method requires the caller to hold the permission
Manifest.permission.SET_WALLPAPER .
|
void
|
setWallpaper(InputStream data)
This method is deprecated.
Use WallpaperManager.set() instead.
This method requires the caller to hold the permission
Manifest.permission.SET_WALLPAPER .
|
void
|
startActivities(Intent[] intents, Bundle options)
Launch multiple new activities.
|
void
|
startActivities(Intent[] intents)
Same as startActivities(android.content.Intent[], android.os.Bundle) with no options
specified.
|
void
|
startActivity(Intent intent)
Same as startActivity(android.content.Intent, android.os.Bundle) with no options
specified.
|
void
|
startActivity(Intent intent, Bundle options)
Launch a new activity.
|
ComponentName
|
startForegroundService(Intent service)
Similar to startService(android.content.Intent) , but with an implicit promise that the
Service will call startForeground(int, android.app.Notification) once it begins running.
|
boolean
|
startInstrumentation(ComponentName className, String profileFile, Bundle arguments)
Start executing an Instrumentation class.
|
void
|
startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
Same as startIntentSender(android.content.IntentSender, android.content.Intent, int, int, int, android.os.Bundle)
with no options specified.
|
void
|
startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)
Like startActivity(android.content.Intent, android.os.Bundle) , but taking a IntentSender
to start.
|
ComponentName
|
startService(Intent service)
Request that a given application service be started.
|
boolean
|
stopService(Intent name)
Request that a given application service be stopped.
|
void
|
unbindService(ServiceConnection conn)
Disconnect from an application service.
|
void
|
unregisterComponentCallbacks(ComponentCallbacks callback)
Remove a ComponentCallbacks object that was previously registered
with registerComponentCallbacks(android.content.ComponentCallbacks) .
|
void
|
unregisterDeviceIdChangeListener(IntConsumer listener)
Removes a device ID changed listener from the Context.
|
void
|
unregisterReceiver(BroadcastReceiver receiver)
Unregister a previously registered BroadcastReceiver.
|
void
|
updateServiceGroup(ServiceConnection conn, int group, int importance)
For a service previously bound with bindService(Intent, BindServiceFlags, Executor, ServiceConnection) or a related method, change
how the system manages that service's process in relation to other processes.
|
|
From class
android.content.Context
boolean
|
bindIsolatedService(Intent service, int flags, String instanceName, Executor executor, ServiceConnection conn)
Variation of bindService(Intent, BindServiceFlags, Executor, ServiceConnection) that, in the specific case of isolated
services, allows the caller to generate multiple instances of a service
from a single component declaration.
|
boolean
|
bindIsolatedService(Intent service, Context.BindServiceFlags flags, String instanceName, Executor executor, ServiceConnection conn)
See bindIsolatedService(android.content.Intent, int, java.lang.String, java.util.concurrent.Executor, android.content.ServiceConnection)
Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.
|
boolean
|
bindService(Intent service, int flags, Executor executor, ServiceConnection conn)
Same as bindService(Intent, ServiceConnection, int) with executor to control ServiceConnection
callbacks.
|
boolean
|
bindService(Intent service, ServiceConnection conn, Context.BindServiceFlags flags)
See bindService(android.content.Intent, android.content.ServiceConnection, int)
Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.
|
abstract
boolean
|
bindService(Intent service, ServiceConnection conn, int flags)
Connects to an application service, creating it if needed.
|
boolean
|
bindService(Intent service, Context.BindServiceFlags flags, Executor executor, ServiceConnection conn)
See bindService(android.content.Intent, int, java.util.concurrent.Executor, android.content.ServiceConnection)
Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.
|
boolean
|
bindServiceAsUser(Intent service, ServiceConnection conn, int flags, UserHandle user)
Binds to a service in the given user in the same manner as bindService(Intent, BindServiceFlags, Executor, ServiceConnection) .
|
boolean
|
bindServiceAsUser(Intent service, ServiceConnection conn, Context.BindServiceFlags flags, UserHandle user)
See bindServiceAsUser(android.content.Intent, android.content.ServiceConnection, int, android.os.UserHandle)
Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.
|
abstract
int
|
checkCallingOrSelfPermission(String permission)
Determine whether the calling process of an IPC or you have been
granted a particular permission.
|
abstract
int
|
checkCallingOrSelfUriPermission(Uri uri, int modeFlags)
Determine whether the calling process of an IPC or you has been granted
permission to access a specific URI.
|
int[]
|
checkCallingOrSelfUriPermissions(List<Uri> uris, int modeFlags)
Determine whether the calling process of an IPC or you has been granted
permission to access a list of URIs.
|
abstract
int
|
checkCallingPermission(String permission)
Determine whether the calling process of an IPC you are handling has been
granted a particular permission.
|
abstract
int
|
checkCallingUriPermission(Uri uri, int modeFlags)
Determine whether the calling process and uid has been
granted permission to access a specific URI.
|
int[]
|
checkCallingUriPermissions(List<Uri> uris, int modeFlags)
Determine whether the calling process and uid has been
granted permission to access a list of URIs.
|
int
|
checkContentUriPermissionFull(Uri uri, int pid, int uid, int modeFlags)
Determine whether a particular process and uid has been granted
permission to access a specific content URI.
|
abstract
int
|
checkPermission(String permission, int pid, int uid)
Determine whether the given permission is allowed for a particular
process and user ID running in the system.
|
abstract
int
|
checkSelfPermission(String permission)
Determine whether you have been granted a particular permission.
|
abstract
int
|
checkUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags)
Check both a Uri and normal permission.
|
abstract
int
|
checkUriPermission(Uri uri, int pid, int uid, int modeFlags)
Determine whether a particular process and uid has been granted
permission to access a specific URI.
|
int[]
|
checkUriPermissions(List<Uri> uris, int pid, int uid, int modeFlags)
Determine whether a particular process and uid has been granted
permission to access a list of URIs.
|
abstract
void
|
clearWallpaper()
This method was deprecated
in API level 15.
Use WallpaperManager.clear() instead.
This method requires the caller to hold the permission
Manifest.permission.SET_WALLPAPER .
|
Context
|
createAttributionContext(String attributionTag)
Return a new Context object for the current Context but attribute to a different tag.
|
abstract
Context
|
createConfigurationContext(Configuration overrideConfiguration)
Return a new Context object for the current Context but whose resources
are adjusted to match the given Configuration.
|
Context
|
createContext(ContextParams contextParams)
Creates a context with specific properties and behaviors.
|
abstract
Context
|
createContextForSplit(String splitName)
Return a new Context object for the given split name.
|
Context
|
createDeviceContext(int deviceId)
Returns a new Context object from the current context but with device association
given by the deviceId .
|
abstract
Context
|
createDeviceProtectedStorageContext()
Return a new Context object for the current Context but whose storage
APIs are backed by device-protected storage.
|
abstract
Context
|
createDisplayContext(Display display)
Returns a new Context object from the current context but with resources
adjusted to match the metrics of display .
|
abstract
Context
|
createPackageContext(String packageName, int flags)
Return a new Context object for the given application name.
|
Context
|
createWindowContext(int type, Bundle options)
Creates a Context for a non-activity window.
|
Context
|
createWindowContext(Display display, int type, Bundle options)
Creates a Context for a non-activity window on the given
Display .
|
abstract
String[]
|
databaseList()
Returns an array of strings naming the private databases associated with
this Context's application package.
|
abstract
boolean
|
deleteDatabase(String name)
Delete an existing private SQLiteDatabase associated with this Context's
application package.
|
abstract
boolean
|
deleteFile(String name)
Delete the given private file associated with this Context's
application package.
|
abstract
boolean
|
deleteSharedPreferences(String name)
Delete an existing shared preferences file.
|
abstract
void
|
enforceCallingOrSelfPermission(String permission, String message)
If neither you nor the calling process of an IPC you are
handling has been granted a particular permission, throw a
SecurityException .
|
abstract
void
|
enforceCallingOrSelfUriPermission(Uri uri, int modeFlags, String message)
If the calling process of an IPC or you has not been
granted permission to access a specific URI, throw SecurityException .
|
abstract
void
|
enforceCallingPermission(String permission, String message)
If the calling process of an IPC you are handling has not been
granted a particular permission, throw a SecurityException .
|
abstract
void
|
enforceCallingUriPermission(Uri uri, int modeFlags, String message)
If the calling process and uid has not been granted
permission to access a specific URI, throw SecurityException .
|
abstract
void
|
enforcePermission(String permission, int pid, int uid, String message)
If the given permission is not allowed for a particular process
and user ID running in the system, throw a SecurityException .
|
abstract
void
|
enforceUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags, String message)
Enforce both a Uri and normal permission.
|
abstract
void
|
enforceUriPermission(Uri uri, int pid, int uid, int modeFlags, String message)
If a particular process and uid has not been granted
permission to access a specific URI, throw SecurityException .
|
abstract
String[]
|
fileList()
Returns an array of strings naming the private files associated with
this Context's application package.
|
abstract
Context
|
getApplicationContext()
Return the context of the single, global Application object of the
current process.
|
abstract
ApplicationInfo
|
getApplicationInfo()
Return the full application info for this context's package.
|
abstract
AssetManager
|
getAssets()
Returns an AssetManager instance for the application's package.
|
AttributionSource
|
getAttributionSource()
|
String
|
getAttributionTag()
Attribution can be used in complex apps to logically separate parts of the app.
|
abstract
File
|
getCacheDir()
Returns the absolute path to the application specific cache directory on
the filesystem.
|
abstract
ClassLoader
|
getClassLoader()
Return a class loader you can use to retrieve classes in this package.
|
abstract
File
|
getCodeCacheDir()
Returns the absolute path to the application specific cache directory on
the filesystem designed for storing cached code.
|
final
int
|
getColor(int id)
Returns a color associated with a particular resource ID and styled for
the current theme.
|
final
ColorStateList
|
getColorStateList(int id)
Returns a color state list associated with a particular resource ID and
styled for the current theme.
|
abstract
ContentResolver
|
getContentResolver()
Return a ContentResolver instance for your application's package.
|
abstract
File
|
getDataDir()
Returns the absolute path to the directory on the filesystem where all
private files belonging to this app are stored.
|
abstract
File
|
getDatabasePath(String name)
Returns the absolute path on the filesystem where a database created with
openOrCreateDatabase(String, int, CursorFactory) is stored.
|
int
|
getDeviceId()
Gets the device ID this context is associated with.
|
abstract
File
|
getDir(String name, int mode)
Retrieve, creating if needed, a new directory in which the application
can place its own custom data files.
|
Display
|
getDisplay()
Get the display this context is associated with.
|
final
Drawable
|
getDrawable(int id)
Returns a drawable object associated with a particular resource ID and
styled for the current theme.
|
abstract
File
|
getExternalCacheDir()
Returns absolute path to application-specific directory on the primary
shared/external storage device where the application can place cache
files it owns.
|
abstract
File[]
|
getExternalCacheDirs()
Returns absolute paths to application-specific directories on all
shared/external storage devices where the application can place cache
files it owns.
|
abstract
File
|
getExternalFilesDir(String type)
Returns the absolute path to the directory on the primary shared/external
storage device where the application can place persistent files it owns.
|
abstract
File[]
|
getExternalFilesDirs(String type)
Returns absolute paths to application-specific directories on all
shared/external storage devices where the application can place
persistent files it owns.
|
abstract
File[]
|
getExternalMediaDirs()
This method was deprecated
in API level 30.
These directories still exist and are scanned, but developers
are encouraged to migrate to inserting content into a
MediaStore collection directly, as any app can
contribute new media to MediaStore with no
permissions required, starting in
Build.VERSION_CODES.Q .
|
abstract
File
|
getFileStreamPath(String name)
Returns the absolute path on the filesystem where a file created with
openFileOutput(String, int) is stored.
|
abstract
File
|
getFilesDir()
Returns the absolute path to the directory on the filesystem where files
created with openFileOutput(String, int) are stored.
|
Executor
|
getMainExecutor()
Return an Executor that will run enqueued tasks on the main
thread associated with this context.
|
abstract
Looper
|
getMainLooper()
Return the Looper for the main thread of the current process.
|
abstract
File
|
getNoBackupFilesDir()
Returns the absolute path to the directory on the filesystem similar to
getFilesDir() .
|
abstract
File
|
getObbDir()
Return the primary shared/external storage directory where this
application's OBB files (if there are any) can be found.
|
abstract
File[]
|
getObbDirs()
Returns absolute paths to application-specific directories on all
shared/external storage devices where the application's OBB files (if
there are any) can be found.
|
String
|
getOpPackageName()
Return the package name that should be used for AppOpsManager calls from
this context, so that app ops manager's uid verification will work with the name.
|
abstract
String
|
getPackageCodePath()
Return the full path to this context's primary Android package.
|
abstract
PackageManager
|
getPackageManager()
Return PackageManager instance to find global package information.
|
abstract
String
|
getPackageName()
Return the name of this application's package.
|
abstract
String
|
getPackageResourcePath()
Return the full path to this context's primary Android package.
|
ContextParams
|
getParams()
Return the set of parameters which this Context was created with, if it
was created via createContext(android.content.ContextParams) .
|
abstract
Resources
|
getResources()
Returns a Resources instance for the application's package.
|
abstract
SharedPreferences
|
getSharedPreferences(String name, int mode)
Retrieve and hold the contents of the preferences file 'name', returning
a SharedPreferences through which you can retrieve and modify its
values.
|
final
String
|
getString(int resId)
Returns a localized string from the application's package's
default string table.
|
final
String
|
getString(int resId, Object... formatArgs)
Returns a localized formatted string from the application's package's
default string table, substituting the format arguments as defined in
Formatter and String.format(String, Object) .
|
final
<T>
T
|
getSystemService(Class<T> serviceClass)
Return the handle to a system-level service by class.
|
abstract
Object
|
getSystemService(String name)
Return the handle to a system-level service by name.
|
abstract
String
|
getSystemServiceName(Class<?> serviceClass)
Gets the name of the system-level service that is represented by the specified class.
|
final
CharSequence
|
getText(int resId)
Return a localized, styled CharSequence from the application's package's
default string table.
|
abstract
Resources.Theme
|
getTheme()
Return the Theme object associated with this Context.
|
abstract
Drawable
|
getWallpaper()
This method was deprecated
in API level 15.
Use WallpaperManager.get() instead.
|
abstract
int
|
getWallpaperDesiredMinimumHeight()
This method was deprecated
in API level 15.
Use WallpaperManager.getDesiredMinimumHeight() instead.
|
abstract
int
|
getWallpaperDesiredMinimumWidth()
This method was deprecated
in API level 15.
Use WallpaperManager.getDesiredMinimumWidth() instead.
|
abstract
void
|
grantUriPermission(String toPackage, Uri uri, int modeFlags)
Grant permission to access a specific Uri to another package, regardless
of whether that package has general permission to access the Uri's
content provider.
|
abstract
boolean
|
isDeviceProtectedStorage()
Indicates if the storage APIs of this Context are backed by
device-protected storage.
|
boolean
|
isRestricted()
Indicates whether this Context is restricted.
|
boolean
|
isUiContext()
Returns true if the context is a UI context which can access UI components such as
WindowManager , LayoutInflater or
WallpaperManager .
|
abstract
boolean
|
moveDatabaseFrom(Context sourceContext, String name)
Move an existing database file from the given source storage context to
this context.
|
abstract
boolean
|
moveSharedPreferencesFrom(Context sourceContext, String name)
Move an existing shared preferences file from the given source storage
context to this context.
|
final
TypedArray
|
obtainStyledAttributes(AttributeSet set, int[] attrs)
Retrieve styled attribute information in this Context's theme.
|
final
TypedArray
|
obtainStyledAttributes(AttributeSet set, int[] attrs, int defStyleAttr, int defStyleRes)
Retrieve styled attribute information in this Context's theme.
|
final
TypedArray
|
obtainStyledAttributes(int resid, int[] attrs)
Retrieve styled attribute information in this Context's theme.
|
final
TypedArray
|
obtainStyledAttributes(int[] attrs)
Retrieve styled attribute information in this Context's theme.
|
abstract
FileInputStream
|
openFileInput(String name)
Open a private file associated with this Context's application package
for reading.
|
abstract
FileOutputStream
|
openFileOutput(String name, int mode)
Open a private file associated with this Context's application package
for writing.
|
abstract
SQLiteDatabase
|
openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory, DatabaseErrorHandler errorHandler)
Open a new private SQLiteDatabase associated with this Context's
application package.
|
abstract
SQLiteDatabase
|
openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory)
Open a new private SQLiteDatabase associated with this Context's
application package.
|
abstract
Drawable
|
peekWallpaper()
This method was deprecated
in API level 15.
Use WallpaperManager.peek() instead.
|
void
|
registerComponentCallbacks(ComponentCallbacks callback)
Add a new ComponentCallbacks to the base application of the
Context, which will be called at the same times as the ComponentCallbacks
methods of activities and other components are called.
|
void
|
registerDeviceIdChangeListener(Executor executor, IntConsumer listener)
Adds a new device ID changed listener to the Context , which will be called when
the device association is changed by the system.
|
abstract
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter)
Register a BroadcastReceiver to be run in the main activity thread.
|
abstract
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter, int flags)
Register to receive intent broadcasts, with the receiver optionally being
exposed to Instant Apps.
|
abstract
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler, int flags)
Register to receive intent broadcasts, to run in the context of
scheduler.
|
abstract
Intent
|
registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler)
Register to receive intent broadcasts, to run in the context of
scheduler.
|
abstract
void
|
removeStickyBroadcast(Intent intent)
This method was deprecated
in API level 21.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
abstract
void
|
removeStickyBroadcastAsUser(Intent intent, UserHandle user)
This method was deprecated
in API level 21.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
revokeSelfPermissionOnKill(String permName)
Triggers the asynchronous revocation of a runtime permission.
|
void
|
revokeSelfPermissionsOnKill(Collection<String> permissions)
Triggers the revocation of one or more permissions for the calling package.
|
abstract
void
|
revokeUriPermission(Uri uri, int modeFlags)
Remove all permissions to access a particular content provider Uri
that were previously added with grantUriPermission(String, Uri, int) or any other mechanism.
|
abstract
void
|
revokeUriPermission(String toPackage, Uri uri, int modeFlags)
Remove permissions to access a particular content provider Uri
that were previously added with grantUriPermission(String, Uri, int) for a specific target
package.
|
void
|
sendBroadcast(Intent intent, String receiverPermission, Bundle options)
Broadcast the given intent to all interested BroadcastReceivers, allowing
an optional required permission to be enforced.
|
abstract
void
|
sendBroadcast(Intent intent, String receiverPermission)
Broadcast the given intent to all interested BroadcastReceivers, allowing
an optional required permission to be enforced.
|
abstract
void
|
sendBroadcast(Intent intent)
Broadcast the given intent to all interested BroadcastReceivers.
|
abstract
void
|
sendBroadcastAsUser(Intent intent, UserHandle user)
Version of sendBroadcast(android.content.Intent) that allows you to specify the
user the broadcast will be sent to.
|
abstract
void
|
sendBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission)
Version of sendBroadcast(android.content.Intent, java.lang.String) that allows you to specify the
user the broadcast will be sent to.
|
void
|
sendBroadcastWithMultiplePermissions(Intent intent, String[] receiverPermissions)
Broadcast the given intent to all interested BroadcastReceivers, allowing
an array of required permissions to be enforced.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of
sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the App Op to enforce restrictions on which receivers
the broadcast will be sent to.
|
abstract
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of sendBroadcast(android.content.Intent) that allows you to
receive data back from the broadcast.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options)
Broadcast the given intent to all interested BroadcastReceivers, delivering
them one at a time to allow more preferred receivers to consume the
broadcast before it is delivered to less preferred receivers.
|
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of sendBroadcast(android.content.Intent) that allows you to
receive data back from the broadcast.
|
abstract
void
|
sendOrderedBroadcast(Intent intent, String receiverPermission)
Broadcast the given intent to all interested BroadcastReceivers, delivering
them one at a time to allow more preferred receivers to consume the
broadcast before it is delivered to less preferred receivers.
|
abstract
void
|
sendOrderedBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
Version of
sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle)
that allows you to specify the
user the broadcast will be sent to.
|
abstract
void
|
sendStickyBroadcast(Intent intent)
This method was deprecated
in API level 21.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
void
|
sendStickyBroadcast(Intent intent, Bundle options)
This method was deprecated
in API level 31.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
abstract
void
|
sendStickyBroadcastAsUser(Intent intent, UserHandle user)
This method was deprecated
in API level 21.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
abstract
void
|
sendStickyOrderedBroadcast(Intent intent, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
This method was deprecated
in API level 21.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
abstract
void
|
sendStickyOrderedBroadcastAsUser(Intent intent, UserHandle user, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)
This method was deprecated
in API level 21.
Sticky broadcasts should not be used. They provide no security (anyone
can access them), no protection (anyone can modify them), and many other problems.
The recommended pattern is to use a non-sticky broadcast to report that something
has changed, with another mechanism for apps to retrieve the current value whenever
desired.
|
abstract
void
|
setTheme(int resid)
Set the base theme for this context.
|
abstract
void
|
setWallpaper(Bitmap bitmap)
This method was deprecated
in API level 15.
Use WallpaperManager.set() instead.
This method requires the caller to hold the permission
Manifest.permission.SET_WALLPAPER .
|
abstract
void
|
setWallpaper(InputStream data)
This method was deprecated
in API level 15.
Use WallpaperManager.set() instead.
This method requires the caller to hold the permission
Manifest.permission.SET_WALLPAPER .
|
abstract
void
|
startActivities(Intent[] intents, Bundle options)
Launch multiple new activities.
|
abstract
void
|
startActivities(Intent[] intents)
Same as startActivities(android.content.Intent[], android.os.Bundle) with no options
specified.
|
abstract
void
|
startActivity(Intent intent)
Same as startActivity(android.content.Intent, android.os.Bundle) with no options
specified.
|
abstract
void
|
startActivity(Intent intent, Bundle options)
Launch a new activity.
|
abstract
ComponentName
|
startForegroundService(Intent service)
Similar to startService(android.content.Intent) , but with an implicit promise that the
Service will call startForeground(int, android.app.Notification) once it begins running.
|
abstract
boolean
|
startInstrumentation(ComponentName className, String profileFile, Bundle arguments)
Start executing an Instrumentation class.
|
abstract
void
|
startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
Same as startIntentSender(android.content.IntentSender, android.content.Intent, int, int, int, android.os.Bundle)
with no options specified.
|
abstract
void
|
startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)
Like startActivity(android.content.Intent, android.os.Bundle) , but taking a IntentSender
to start.
|
abstract
ComponentName
|
startService(Intent service)
Request that a given application service be started.
|
abstract
boolean
|
stopService(Intent service)
Request that a given application service be stopped.
|
abstract
void
|
unbindService(ServiceConnection conn)
Disconnect from an application service.
|
void
|
unregisterComponentCallbacks(ComponentCallbacks callback)
Remove a ComponentCallbacks object that was previously registered
with registerComponentCallbacks(android.content.ComponentCallbacks) .
|
void
|
unregisterDeviceIdChangeListener(IntConsumer listener)
Removes a device ID changed listener from the Context.
|
abstract
void
|
unregisterReceiver(BroadcastReceiver receiver)
Unregister a previously registered BroadcastReceiver.
|
void
|
updateServiceGroup(ServiceConnection conn, int group, int importance)
For a service previously bound with bindService(Intent, BindServiceFlags, Executor, ServiceConnection) or a related method, change
how the system manages that service's process in relation to other processes.
|
|
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object .
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
|
From interface
android.content.ComponentCallbacks2
abstract
void
|
onTrimMemory(int level)
Called when the operating system has determined that it is a good
time for a process to trim unneeded memory from its process.
|
|
From interface
android.content.ComponentCallbacks
abstract
void
|
onConfigurationChanged(Configuration newConfig)
Called by the system when the device configuration changes while your
component is running.
|
abstract
void
|
onLowMemory()
This method was deprecated
in API level 35.
Since API level 14 this is superseded by
ComponentCallbacks2#onTrimMemory .
Since API level 34 this is never called.
Apps targeting API level 34 and above may provide an empty implementation.
|
|
Constants
SERVICE_INTERFACE
public static final String SERVICE_INTERFACE
The Intent
that must be declared as handled by the service.
To be supported, the service must also require the
Manifest.permission.BIND_AUTOFILL_SERVICE
permission so
that other applications can not abuse it.
Constant Value:
"android.service.autofill.AutofillService"
public static final String SERVICE_META_DATA
Name under which a AutoFillService component publishes information about itself.
This meta-data should reference an XML resource containing a
<autofill-service
>
tag.
This is a a sample XML file configuring an AutoFillService:
<autofill-service
android:settingsActivity="foo.bar.SettingsActivity"
. . .
/>
Constant Value:
"android.autofill"
Public constructors
AutofillService
public AutofillService ()
Public methods
onBind
public final IBinder onBind (Intent intent)
Return the communication channel to the service. May return null if
clients can not bind to the service. The returned
IBinder
is usually for a complex interface
that has been described using
aidl.
Note that unlike other application components, calls on to the
IBinder interface returned here may not happen on the main thread
of the process. More information about the main thread can be found in
Processes and
Threads.
Parameters |
intent |
Intent : The Intent that was used to bind to this service,
as given to Context.bindService . Note that any extras that were included with
the Intent at that point will not be seen here. |
Returns |
IBinder |
Return an IBinder through which clients can call on to the
service. |
onConnected
public void onConnected ()
Called when the Android system connects to service.
You should generally do initialization here rather than in onCreate()
.
onCreate
public void onCreate ()
Called by the system when the service is first created. Do not call this method directly.
If you override this method you must call through to the
superclass implementation.
onDisconnected
public void onDisconnected ()
Called when the Android system disconnects from the service.
At this point this service may no longer be an active AutofillService
.
It should not make calls on AutofillManager
that requires the caller to be
the current service.
onFillRequest
public abstract void onFillRequest (FillRequest request,
CancellationSignal cancellationSignal,
FillCallback callback)
Called by the Android system do decide if a screen can be autofilled by the service.
Service must call one of the FillCallback
methods (like
FillCallback#onSuccess(FillResponse)
or FillCallback#onFailure(CharSequence)
)
to notify the result of the request.
Parameters |
request |
FillRequest : the request to handle.
See FillResponse for examples of multiple-sections requests.
This value cannot be null . |
cancellationSignal |
CancellationSignal : signal for observing cancellation requests. The system will use
this to notify you that the fill result is no longer needed and you should stop
handling this fill request in order to save resources.
This value cannot be null . |
callback |
FillCallback : object used to notify the result of the request.
This value cannot be null . |
onSaveRequest
public abstract void onSaveRequest (SaveRequest request,
SaveCallback callback)
Called when the user requests the service to save the contents of a screen.
If the service could not handle the request right away—for example, because it must
launch an activity asking the user to authenticate first or because the network is
down—the service could keep the request
and reuse it later,
but the service must always call SaveCallback#onSuccess()
or
SaveCallback#onSuccess(android.content.IntentSender)
right away.
Note: To retrieve the actual value of fields input by the user, the service
should call
AssistStructure.ViewNode.getAutofillValue()
; if it calls
AssistStructure.ViewNode.getText()
or other methods, there is no
guarantee such method will return the most recent value of the field.
Parameters |
request |
SaveRequest : the request to handle.
See FillResponse for examples of multiple-sections requests.
This value cannot be null . |
callback |
SaveCallback : object used to notify the result of the request.
This value cannot be null . |
onSavedDatasetsInfoRequest
public void onSavedDatasetsInfoRequest (SavedDatasetsInfoCallback callback)
Called from system settings to display information about the datasets the user saved to this
service.
There is no timeout for the request, but it's recommended to return the result within a
few seconds, or the user may navigate away from the activity that would display the result.
Parameters |
callback |
SavedDatasetsInfoCallback : callback for responding to the request
This value cannot be null . |