Added in API level 14

WifiP2pManager

open class WifiP2pManager
kotlin.Any
   ↳ android.net.wifi.p2p.WifiP2pManager

This class provides the API for managing Wi-Fi peer-to-peer connectivity. This lets an application discover available peers, setup connection to peers and query for the list of peers. When a p2p connection is formed over wifi, the device continues to maintain the uplink connection over mobile or any other available network for internet connectivity on the device.

The API is asynchronous and responses to requests from an application are on listener callbacks provided by the application. The application needs to do an initialization with initialize before doing any p2p operation.

Most application calls need a ActionListener instance for receiving callbacks ActionListener#onSuccess or ActionListener#onFailure. Action callbacks indicate whether the initiation of the action was a success or a failure. Upon failure, the reason of failure can be one of ERROR, P2P_UNSUPPORTED or BUSY.

An application can initiate discovery of peers with discoverPeers. An initiated discovery request from an application stays active until the device starts connecting to a peer ,forms a p2p group or there is an explicit stopPeerDiscovery. Applications can listen to WIFI_P2P_DISCOVERY_CHANGED_ACTION to know if a peer-to-peer discovery is running or stopped. Additionally, WIFI_P2P_PEERS_CHANGED_ACTION indicates if the peer list has changed.

When an application needs to fetch the current list of peers, it can request the list of peers with requestPeers. When the peer list is available PeerListListener#onPeersAvailable is called with the device list.

An application can initiate a connection request to a peer through connect. See WifiP2pConfig for details on setting up the configuration. For communication with legacy Wi-Fi devices that do not support p2p, an app can create a group using #createGroup which creates an access point whose details can be fetched with requestGroupInfo.

After a successful group formation through #createGroup or through connect, use requestConnectionInfo to fetch the connection details. The connection info WifiP2pInfo contains the address of the group owner WifiP2pInfo#groupOwnerAddress and a flag WifiP2pInfo#isGroupOwner to indicate if the current device is a p2p group owner. A p2p client can thus communicate with the p2p group owner through a socket connection. If the current device is the p2p group owner, WifiP2pInfo#groupOwnerAddress is anonymized unless the caller holds the android.Manifest.permission#LOCAL_MAC_ADDRESS permission.

With peer discovery using discoverPeers, an application discovers the neighboring peers, but has no good way to figure out which peer to establish a connection with. For example, if a game application is interested in finding all the neighboring peers that are also running the same game, it has no way to find out until after the connection is setup. Pre-association service discovery is meant to address this issue of filtering the peers based on the running services.

With pre-association service discovery, an application can advertise a service for a application on a peer device prior to a connection setup between the devices. Currently, DNS based service discovery (Bonjour) and Upnp are the higher layer protocols supported. Get Bonjour resources at dns-sd.org and Upnp resources at upnp.org As an example, a video application can discover a Upnp capable media renderer prior to setting up a Wi-fi p2p connection with the device.

An application can advertise a Upnp or a Bonjour service with a call to addLocalService. After a local service is added, the framework automatically responds to a peer application discovering the service prior to establishing a p2p connection. A call to removeLocalService removes a local service and clearLocalServices can be used to clear all local services.

An application that is looking for peer devices that support certain services can do so with a call to discoverServices. Prior to initiating the discovery, application can add service discovery request with a call to addServiceRequest, remove a service discovery request with a call to removeServiceRequest or clear all requests with a call to clearServiceRequests. When no service requests remain, a previously running service discovery will stop. The application is notified of a result of service discovery request through listener callbacks set through setDnsSdResponseListeners for Bonjour or setUpnpServiceResponseListener for Upnp.

Note: Registering an application handler with initialize requires the permissions android.Manifest.permission#ACCESS_WIFI_STATE and android.Manifest.permission#CHANGE_WIFI_STATE to perform any further peer-to-peer operations. {@see WifiP2pConfig} {@see WifiP2pInfo} {@see WifiP2pGroup} {@see WifiP2pDevice} {@see WifiP2pDeviceList} {@see android.net.wifi.WpsInfo}

Summary

Nested classes
abstract

Interface for callback invocation on an application action
open

A channel that connects the application to the Wifi p2p framework.
abstract

Interface for callback invocation when framework channel is lost
abstract

Interface for callback invocation when connection info is available
abstract

Interface for callback invocation when android.net.wifi.p2p.WifiP2pDevice is available in response to requestDeviceInfo(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.DeviceInfoListener).
abstract

Interface for callback invocation when p2p state is available in response to requestDiscoveryState.
abstract

Interface for callback invocation when Bonjour service discovery response is received
abstract

Interface for callback invocation when Bonjour TXT record is available for a service
abstract

Interface for callback invocation when an incoming request is received.
abstract

Interface for callback invocation when group info is available
abstract

Interface for callback invocation when android.net.NetworkInfo is available in response to requestNetworkInfo.
abstract

Interface for callback invocation when p2p state is available in response to requestP2pState.
abstract

Interface for callback invocation when peer list is available
abstract

Interface for callback invocation when service discovery response other than Upnp or Bonjour is received
abstract

Interface for callback invocation when upnp service discovery response is received
abstract

Interface used to listen to Wi-Fi p2p various changes such as device state change, discovery started/stopped, connection change, etc.
Constants
static String

Broadcast intent action indicating that peer listen has either started or stopped.
static String

Broadcast intent action indicating whether or not current connecting request is accepted.
static Int

Passed with ActionListener#onFailure.
static Int

Accept the incoming request.
static Int

Defer the PIN display to the Wi-Fi service (which will display a dialog to the user).
static Int

Defer the decision back to the Wi-Fi service (which will display a dialog to the user).
static Int

Reject the incoming request.
static Int

Passed with ActionListener#onFailure.
static String

The lookup key for an int that indicates whether p2p discovery has started or stopped.
static String

The lookup key for an int that indicates whether p2p listen has started or stopped.
static String

The lookup key for a android.net.NetworkInfo object associated with the p2p network.
static String

The lookup key for a android.net.wifi.p2p.WifiP2pDeviceList object representing the new peer list when WIFI_P2P_PEERS_CHANGED_ACTION broadcast is sent.
static String

The lookup key for the WifiP2pConfig object of a request.
static String

The lookup key for the result of a request, true if accepted, false otherwise.
static String

The lookup key for a android.net.wifi.p2p.WifiP2pDevice object Retrieve with android.content.Intent#getParcelableExtra(String).
static String

The lookup key for a android.net.wifi.p2p.WifiP2pGroup object associated with the p2p network.
static String

The lookup key for a android.net.wifi.p2p.WifiP2pInfo object Retrieve with android.content.Intent#getParcelableExtra(String).
static String

The lookup key for an int that indicates whether Wi-Fi p2p is enabled or disabled.
static Int

P2p group creation failed because the connection has been cancelled.
static Int

P2p group creation failed because the group has been removed.
static Int

P2p group creation failed because invitation has failed.
static Int

P2p group creation failed because provision discovery has failed.
static Int

P2p group creation failed because it has timed out.
static Int

P2p group creation failed because user has rejected.
static Int

Passed with ActionListener#onFailure.
static Int

Passed with ActionListener#onFailure.
static String

Broadcast intent action indicating that the state of Wi-Fi p2p connectivity has changed.
static String

Broadcast intent action indicating that peer discovery has either started or stopped.
static Int

p2p discovery has started
static Int

p2p discovery has stopped
static Int

p2p listen has started
static Int

p2p listen has stopped
static String

Broadcast intent action indicating that the available peer list has changed.
static Int

Run P2P scan on all channels.
static Int

Run P2P scan only on a specific channel.
static Int

Run P2P scan only on social channels.
static String

Broadcast intent action to indicate whether Wi-Fi p2p is enabled or disabled.
static Int

Wi-Fi p2p is disabled.
static Int

Wi-Fi p2p is enabled.
static String

Broadcast intent action indicating that this device details have changed.
Public methods
open Unit

Set the external approver for a specific peer.
open Unit

Register a local service for service discovery.
open Unit

Add a service discovery request.
open Unit

Cancel any ongoing p2p group negotiation

open Unit

Clear all registered local services of service discovery.
open Unit

Clear all registered service discovery requests.
open Unit

Start a p2p connection to a device with the specified configuration.
open Unit

Create a p2p group with the current device as the group owner.
open Unit

Create a p2p group with the current device as the group owner.
open Unit

Initiate peer discovery.
open Unit

Scan only the social channels.
open Unit

Scan only a single channel specified by frequency.
open Unit

Initiate service discovery.
open Unit
getListenState(c: WifiP2pManager.Channel, executor: Executor, resultsCallback: Consumer<Int!>)

Get p2p listen state.
open static Int

Return the maximum total length (in bytes) of all Vendor specific information elements (VSIEs) which can be set using the setVendorElements(android.net.wifi.p2p.WifiP2pManager.Channel,java.util.List,android.net.wifi.p2p.WifiP2pManager.ActionListener).
open WifiP2pManager.Channel!
initialize(srcContext: Context!, srcLooper: Looper!, listener: WifiP2pManager.ChannelListener!)

Registers the application with the Wi-Fi framework.
open Boolean

Check if this device supports discovery limited to a specific frequency or the social channels.
open Boolean

Check if this device supports removing clients from a group.
open Boolean

Checks whether this device, while being a group client, can discover and deliver the group owner's IPv6 link-local address.
open Boolean

Check if this device supports setting vendor elements.
open Unit

Add a listener to listen to Wi-Fi p2p various changes.
open Unit

Remove the client with the MAC address from the group.
open Unit

Remove the external approver for a specific peer.
open Unit

Remove the current p2p group.
open Unit

Remove a registered local service added with addLocalService

open Unit

Remove a specified service discovery request added with addServiceRequest

open Unit

Request device connection info.
open Unit

Request Device Info

open Unit

Request p2p discovery state.
open Unit

Request p2p group info.
open Unit

Request network info.
open Unit

Request p2p enabled state.
open Unit

Request the current list of peers.
open Unit

Set the result for the incoming request from a specific peer.
open Unit

Set the result with PIN for the incoming request from a specific peer.
open Unit

Register a callback to be invoked on receiving Bonjour service discovery response.
open Unit

Register a callback to be invoked on receiving service discovery response.
open Unit

Register a callback to be invoked on receiving upnp service discovery response.
open Unit

Set/Clear vendor specific information elements (VSIEs) to be published during Wi-Fi Direct (P2P) discovery.
open Unit

Set Wifi Display information.
open Unit

Force p2p to enter listen state.
open Unit

Initiate peer discovery.
open Unit

Force p2p to exit listen state.
open Unit

Stop an ongoing peer discovery

open Unit

Remove a listener added using registerWifiP2pListener(java.util.concurrent.Executor,android.net.wifi.p2p.WifiP2pManager.WifiP2pListener)

Constants

ACTION_WIFI_P2P_LISTEN_STATE_CHANGED

Added in API level 34
static val ACTION_WIFI_P2P_LISTEN_STATE_CHANGED: String

Broadcast intent action indicating that peer listen has either started or stopped. One extra EXTRA_LISTEN_STATE indicates whether listen has started or stopped.

Value: "android.net.wifi.p2p.action.WIFI_P2P_LISTEN_STATE_CHANGED"

ACTION_WIFI_P2P_REQUEST_RESPONSE_CHANGED

Added in API level 33
static val ACTION_WIFI_P2P_REQUEST_RESPONSE_CHANGED: String

Broadcast intent action indicating whether or not current connecting request is accepted. The connecting request is initiated by connect(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pConfig,android.net.wifi.p2p.WifiP2pManager.ActionListener).

The EXTRA_REQUEST_RESPONSE extra indicates whether or not current request is accepted or rejected.

The EXTRA_REQUEST_CONFIG extra indicates the responsed configuration.

Value: "android.net.wifi.p2p.action.WIFI_P2P_REQUEST_RESPONSE_CHANGED"

BUSY

Added in API level 14
static val BUSY: Int

Passed with ActionListener#onFailure. Indicates that the operation failed because the framework is busy and unable to service the request

Value: 2

CONNECTION_REQUEST_ACCEPT

Added in API level 33
static val CONNECTION_REQUEST_ACCEPT: Int

Accept the incoming request. Used in setConnectionRequestResult(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.MacAddress,int,android.net.wifi.p2p.WifiP2pManager.ActionListener).

Value: 0

CONNECTION_REQUEST_DEFER_SHOW_PIN_TO_SERVICE

Added in API level 33
static val CONNECTION_REQUEST_DEFER_SHOW_PIN_TO_SERVICE: Int

Defer the PIN display to the Wi-Fi service (which will display a dialog to the user). Used in setConnectionRequestResult(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.MacAddress,int,android.net.wifi.p2p.WifiP2pManager.ActionListener).

Value: 3

CONNECTION_REQUEST_DEFER_TO_SERVICE

Added in API level 33
static val CONNECTION_REQUEST_DEFER_TO_SERVICE: Int

Defer the decision back to the Wi-Fi service (which will display a dialog to the user). Used in setConnectionRequestResult(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.MacAddress,int,android.net.wifi.p2p.WifiP2pManager.ActionListener).

Value: 2

CONNECTION_REQUEST_REJECT

Added in API level 33
static val CONNECTION_REQUEST_REJECT: Int

Reject the incoming request. Used in setConnectionRequestResult(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.MacAddress,int,android.net.wifi.p2p.WifiP2pManager.ActionListener).

Value: 1

ERROR

Added in API level 14
static val ERROR: Int

Passed with ActionListener#onFailure. Indicates that the operation failed due to an internal error.

Value: 0

EXTRA_DISCOVERY_STATE

Added in API level 16
static val EXTRA_DISCOVERY_STATE: String

The lookup key for an int that indicates whether p2p discovery has started or stopped. Retrieve it with android.content.Intent#getIntExtra(String,int).

Value: "discoveryState"

EXTRA_LISTEN_STATE

Added in API level 34
static val EXTRA_LISTEN_STATE: String

The lookup key for an int that indicates whether p2p listen has started or stopped. Retrieve it with android.content.Intent#getIntExtra(String,int).

Value: "android.net.wifi.p2p.extra.LISTEN_STATE"

EXTRA_NETWORK_INFO

Added in API level 14
static val EXTRA_NETWORK_INFO: String

The lookup key for a android.net.NetworkInfo object associated with the p2p network. Retrieve with android.content.Intent#getParcelableExtra(String).

Value: "networkInfo"

EXTRA_P2P_DEVICE_LIST

Added in API level 18
static val EXTRA_P2P_DEVICE_LIST: String

The lookup key for a android.net.wifi.p2p.WifiP2pDeviceList object representing the new peer list when WIFI_P2P_PEERS_CHANGED_ACTION broadcast is sent.

Retrieve with android.content.Intent#getParcelableExtra(String).

Value: "wifiP2pDeviceList"

EXTRA_REQUEST_CONFIG

Added in API level 33
static val EXTRA_REQUEST_CONFIG: String

The lookup key for the WifiP2pConfig object of a request.

Value: "android.net.wifi.p2p.extra.REQUEST_CONFIG"

EXTRA_REQUEST_RESPONSE

Added in API level 33
static val EXTRA_REQUEST_RESPONSE: String

The lookup key for the result of a request, true if accepted, false otherwise.

Value: "android.net.wifi.p2p.extra.REQUEST_RESPONSE"

EXTRA_WIFI_P2P_DEVICE

Added in API level 14
static val EXTRA_WIFI_P2P_DEVICE: String

The lookup key for a android.net.wifi.p2p.WifiP2pDevice object Retrieve with android.content.Intent#getParcelableExtra(String).

Value: "wifiP2pDevice"

EXTRA_WIFI_P2P_GROUP

Added in API level 18
static val EXTRA_WIFI_P2P_GROUP: String

The lookup key for a android.net.wifi.p2p.WifiP2pGroup object associated with the p2p network. Retrieve with android.content.Intent#getParcelableExtra(String).

Value: "p2pGroupInfo"

EXTRA_WIFI_P2P_INFO

Added in API level 14
static val EXTRA_WIFI_P2P_INFO: String

The lookup key for a android.net.wifi.p2p.WifiP2pInfo object Retrieve with android.content.Intent#getParcelableExtra(String).

Value: "wifiP2pInfo"

EXTRA_WIFI_STATE

Added in API level 14
static val EXTRA_WIFI_STATE: String

The lookup key for an int that indicates whether Wi-Fi p2p is enabled or disabled. Retrieve it with android.content.Intent#getIntExtra(String,int).

Value: "wifi_p2p_state"

GROUP_CREATION_FAILURE_REASON_CONNECTION_CANCELLED

Added in API level 35
static val GROUP_CREATION_FAILURE_REASON_CONNECTION_CANCELLED: Int

P2p group creation failed because the connection has been cancelled. Used in WifiP2pListener#onGroupCreationFailed(int reason).

Value: 0

GROUP_CREATION_FAILURE_REASON_GROUP_REMOVED

Added in API level 35
static val GROUP_CREATION_FAILURE_REASON_GROUP_REMOVED: Int

P2p group creation failed because the group has been removed. Used in WifiP2pListener#onGroupCreationFailed(int reason).

Value: 4

GROUP_CREATION_FAILURE_REASON_INVITATION_FAILED

Added in API level 35
static val GROUP_CREATION_FAILURE_REASON_INVITATION_FAILED: Int

P2p group creation failed because invitation has failed. Used in WifiP2pListener#onGroupCreationFailed(int reason).

Value: 5

GROUP_CREATION_FAILURE_REASON_PROVISION_DISCOVERY_FAILED

Added in API level 35
static val GROUP_CREATION_FAILURE_REASON_PROVISION_DISCOVERY_FAILED: Int

P2p group creation failed because provision discovery has failed. Used in WifiP2pListener#onGroupCreationFailed(int reason).

Value: 3

GROUP_CREATION_FAILURE_REASON_TIMED_OUT

Added in API level 35
static val GROUP_CREATION_FAILURE_REASON_TIMED_OUT: Int

P2p group creation failed because it has timed out. Used in WifiP2pListener#onGroupCreationFailed(int reason).

Value: 1

GROUP_CREATION_FAILURE_REASON_USER_REJECTED

Added in API level 35
static val GROUP_CREATION_FAILURE_REASON_USER_REJECTED: Int

P2p group creation failed because user has rejected. Used in WifiP2pListener#onGroupCreationFailed(int reason).

Value: 2

NO_SERVICE_REQUESTS

Added in API level 16
static val NO_SERVICE_REQUESTS: Int

Passed with ActionListener#onFailure. Indicates that the discoverServices failed because no service requests are added. Use addServiceRequest to add a service request.

Value: 3

P2P_UNSUPPORTED

Added in API level 14
static val P2P_UNSUPPORTED: Int

Passed with ActionListener#onFailure. Indicates that the operation failed because p2p is unsupported on the device.

Value: 1

WIFI_P2P_CONNECTION_CHANGED_ACTION

Added in API level 14
static val WIFI_P2P_CONNECTION_CHANGED_ACTION: String

Broadcast intent action indicating that the state of Wi-Fi p2p connectivity has changed. One extra EXTRA_WIFI_P2P_INFO provides the p2p connection info in the form of a WifiP2pInfo object. Another extra EXTRA_NETWORK_INFO provides the network info in the form of a android.net.NetworkInfo. A third extra provides the details of the group and may contain a null. All of these permissions are required to receive this broadcast: android.Manifest.permission#ACCESS_WIFI_STATE and either android.Manifest.permission#ACCESS_FINE_LOCATION or android.Manifest.permission#NEARBY_WIFI_DEVICES

Value: "android.net.wifi.p2p.CONNECTION_STATE_CHANGE"

WIFI_P2P_DISCOVERY_CHANGED_ACTION

Added in API level 16
static val WIFI_P2P_DISCOVERY_CHANGED_ACTION: String

Broadcast intent action indicating that peer discovery has either started or stopped. One extra EXTRA_DISCOVERY_STATE indicates whether discovery has started or stopped.

Note that discovery will be stopped during a connection setup. If the application tries to re-initiate discovery during this time, it can fail.

Value: "android.net.wifi.p2p.DISCOVERY_STATE_CHANGE"

WIFI_P2P_DISCOVERY_STARTED

Added in API level 16
static val WIFI_P2P_DISCOVERY_STARTED: Int

p2p discovery has started

Value: 2

WIFI_P2P_DISCOVERY_STOPPED

Added in API level 16
static val WIFI_P2P_DISCOVERY_STOPPED: Int

p2p discovery has stopped

Value: 1

WIFI_P2P_LISTEN_STARTED

Added in API level 34
static val WIFI_P2P_LISTEN_STARTED: Int

p2p listen has started

Value: 2

WIFI_P2P_LISTEN_STOPPED

Added in API level 34
static val WIFI_P2P_LISTEN_STOPPED: Int

p2p listen has stopped

Value: 1

WIFI_P2P_PEERS_CHANGED_ACTION

Added in API level 14
static val WIFI_P2P_PEERS_CHANGED_ACTION: String

Broadcast intent action indicating that the available peer list has changed. This can be sent as a result of peers being found, lost or updated. All of these permissions are required to receive this broadcast: android.Manifest.permission#ACCESS_WIFI_STATE and either android.Manifest.permission#ACCESS_FINE_LOCATION or android.Manifest.permission#NEARBY_WIFI_DEVICES

An extra EXTRA_P2P_DEVICE_LIST provides the full list of current peers. The full list of peers can also be obtained any time with requestPeers.

Value: "android.net.wifi.p2p.PEERS_CHANGED"

WIFI_P2P_SCAN_FULL

Added in API level 35
static val WIFI_P2P_SCAN_FULL: Int

Run P2P scan on all channels.

Value: 0

WIFI_P2P_SCAN_SINGLE_FREQ

Added in API level 35
static val WIFI_P2P_SCAN_SINGLE_FREQ: Int

Run P2P scan only on a specific channel.

Value: 2

WIFI_P2P_SCAN_SOCIAL

Added in API level 35
static val WIFI_P2P_SCAN_SOCIAL: Int

Run P2P scan only on social channels.

Value: 1

WIFI_P2P_STATE_CHANGED_ACTION

Added in API level 14
static val WIFI_P2P_STATE_CHANGED_ACTION: String

Broadcast intent action to indicate whether Wi-Fi p2p is enabled or disabled. An extra EXTRA_WIFI_STATE provides the state information as int.

Value: "android.net.wifi.p2p.STATE_CHANGED"

WIFI_P2P_STATE_DISABLED

Added in API level 14
static val WIFI_P2P_STATE_DISABLED: Int

Wi-Fi p2p is disabled.

Value: 1

WIFI_P2P_STATE_ENABLED

Added in API level 14
static val WIFI_P2P_STATE_ENABLED: Int

Wi-Fi p2p is enabled.

Value: 2

WIFI_P2P_THIS_DEVICE_CHANGED_ACTION

Added in API level 14
static val WIFI_P2P_THIS_DEVICE_CHANGED_ACTION: String

Broadcast intent action indicating that this device details have changed.

An extra EXTRA_WIFI_P2P_DEVICE provides this device details. The valid device details can also be obtained with requestDeviceInfo(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.DeviceInfoListener) when p2p is enabled. To get information notifications on P2P getting enabled refers WIFI_P2P_STATE_ENABLED.

The EXTRA_WIFI_P2P_DEVICE extra contains an anonymized version of the device's MAC address. Callers holding the android.Manifest.permission#LOCAL_MAC_ADDRESS permission can use requestDeviceInfo to obtain the actual MAC address of this device. All of these permissions are required to receive this broadcast: android.Manifest.permission#ACCESS_WIFI_STATE and either android.Manifest.permission#ACCESS_FINE_LOCATION or android.Manifest.permission#NEARBY_WIFI_DEVICES

Value: "android.net.wifi.p2p.THIS_DEVICE_CHANGED"

Public methods

addExternalApprover

Added in API level 33
open fun addExternalApprover(
    c: WifiP2pManager.Channel, 
    deviceAddress: MacAddress, 
    listener: WifiP2pManager.ExternalApproverRequestListener
): Unit

Set the external approver for a specific peer. This API associates a specific peer with an approver. When an incoming request is received from a peer, an authorization request is routed to the attached approver. The approver then calls setConnectionRequestResult(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.MacAddress,int,android.net.wifi.p2p.WifiP2pManager.ActionListener) to send the result to the WiFi service. A specific peer (identified by its MacAddress) can only be attached to a single approver. The previous approver will be detached once a new approver is attached. The approver will also be detached automatically when the channel is closed.

When an approver is attached, ExternalApproverRequestListener#onAttached(MacAddress) is called. When an approver is detached, ExternalApproverRequestListener#onDetached(MacAddress, int) is called. When an incoming request is received, ExternalApproverRequestListener#onConnectionRequested(int, WifiP2pConfig, WifiP2pDevice) is called. When a WPS PIN is generated, ExternalApproverRequestListener#onPinGenerated(MacAddress, String) is called.

The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.
Requires android.Manifest.permission#MANAGE_WIFI_NETWORK_SELECTION

Parameters
c WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener). This value cannot be null.
deviceAddress MacAddress: the peer which is bound to the external approver. This value cannot be null.
listener WifiP2pManager.ExternalApproverRequestListener: for callback when the framework needs to notify the external approver. This value cannot be null.

addLocalService

Added in API level 16
open fun addLocalService(
    channel: WifiP2pManager.Channel!, 
    servInfo: WifiP2pServiceInfo!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Register a local service for service discovery. If a local service is registered, the framework automatically responds to a service discovery request from a peer.

The function call immediately returns after sending a request to add a local service to the framework. The application is notified of a success or failure to add service through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

The service information is set through WifiP2pServiceInfo.
or its subclass calls WifiP2pUpnpServiceInfo#newInstance or WifiP2pDnsSdServiceInfo#newInstance for a Upnp or Bonjour service respectively

The service information can be cleared with calls to removeLocalService or clearLocalServices.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
servInfo WifiP2pServiceInfo!: is a local service information.
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

addServiceRequest

Added in API level 16
open fun addServiceRequest(
    channel: WifiP2pManager.Channel!, 
    req: WifiP2pServiceRequest!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Add a service discovery request.

The function call immediately returns after sending a request to add service discovery request to the framework. The application is notified of a success or failure to add service through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

After service discovery request is added, you can initiate service discovery by discoverServices.

The added service requests can be cleared with calls to removeServiceRequest(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.nsd.WifiP2pServiceRequest,android.net.wifi.p2p.WifiP2pManager.ActionListener) or clearServiceRequests(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener).

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
req WifiP2pServiceRequest!: is the service discovery request.
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

cancelConnect

Added in API level 14
open fun cancelConnect(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Cancel any ongoing p2p group negotiation

The function call immediately returns after sending a connection cancellation request to the framework. The application is notified of a success or failure to initiate cancellation through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

clearLocalServices

Added in API level 16
open fun clearLocalServices(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Clear all registered local services of service discovery.

The function call immediately returns after sending a request to clear all local services to the framework. The application is notified of a success or failure to add service through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

clearServiceRequests

Added in API level 16
open fun clearServiceRequests(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Clear all registered service discovery requests.

The function call immediately returns after sending a request to clear all service discovery requests to the framework. The application is notified of a success or failure to add service through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

connect

Added in API level 14
open fun connect(
    channel: WifiP2pManager.Channel!, 
    config: WifiP2pConfig!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Start a p2p connection to a device with the specified configuration.

The function call immediately returns after sending a connection request to the framework. The application is notified of a success or failure to initiate connect through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

An app should use WifiP2pConfig.Builder to build the configuration for this API, ex. call WifiP2pConfig.Builder#setDeviceAddress(MacAddress) to set the peer MAC address and WifiP2pConfig.Builder#enablePersistentMode(boolean) to configure the persistent mode.

Register for WIFI_P2P_CONNECTION_CHANGED_ACTION intent to determine when the framework notifies of a change in connectivity.

If the current device is not part of a p2p group, a connect request initiates a group negotiation with the peer.

If the current device is part of an existing p2p group or has created a p2p group with #createGroup, an invitation to join the group is sent to the peer device.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
config WifiP2pConfig!: options as described in WifiP2pConfig class
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

createGroup

Added in API level 14
open fun createGroup(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Create a p2p group with the current device as the group owner. This essentially creates an access point that can accept connections from legacy clients as well as other p2p devices.

Note: This function would normally not be used unless the current device needs to form a p2p connection with a legacy client

The function call immediately returns after sending a group creation request to the framework. The application is notified of a success or failure to initiate group creation through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Application can request for the group details with requestGroupInfo.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

createGroup

Added in API level 29
open fun createGroup(
    channel: WifiP2pManager.Channel, 
    config: WifiP2pConfig?, 
    listener: WifiP2pManager.ActionListener?
): Unit

Create a p2p group with the current device as the group owner. This essentially creates an access point that can accept connections from legacy clients as well as other p2p devices.

An app should use WifiP2pConfig.Builder to build the configuration for a group.

Note: This function would normally not be used unless the current device needs to form a p2p group as a Group Owner and allow peers to join it as either Group Clients or legacy Wi-Fi STAs.

The function call immediately returns after sending a group creation request to the framework. The application is notified of a success or failure to initiate group creation through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Application can request for the group details with requestGroupInfo.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize. This value cannot be null.
config WifiP2pConfig?: the configuration of a p2p group. This value may be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. Can be null.

discoverPeers

Added in API level 14
open fun discoverPeers(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Initiate peer discovery. A discovery process involves scanning for available Wi-Fi peers for the purpose of establishing a connection.

The function call immediately returns after sending a discovery request to the framework. The application is notified of a success or failure to initiate discovery through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

The discovery remains active until a connection is initiated or a p2p group is formed. Register for WIFI_P2P_PEERS_CHANGED_ACTION intent to determine when the framework notifies of a change as peers are discovered.

Upon receiving a WIFI_P2P_PEERS_CHANGED_ACTION intent, an application can request the list of peers using requestPeers.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

discoverPeersOnSocialChannels

Added in API level 33
open fun discoverPeersOnSocialChannels(
    channel: WifiP2pManager.Channel, 
    listener: WifiP2pManager.ActionListener?
): Unit

Scan only the social channels. A discovery process involves scanning for available Wi-Fi peers for the purpose of establishing a connection.

The function call immediately returns after sending a discovery request to the framework. The application is notified of a success or failure to initiate discovery through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

The discovery remains active until a connection is initiated or a p2p group is formed. Register for WIFI_P2P_PEERS_CHANGED_ACTION intent to determine when the framework notifies of a change as peers are discovered.

Upon receiving a WIFI_P2P_PEERS_CHANGED_ACTION intent, an application can request the list of peers using requestPeers.

The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.

Use isChannelConstrainedDiscoverySupported() to determine whether the device supports this feature. If isChannelConstrainedDiscoverySupported() return false then this method will throw UnsupportedOperationException.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize This value cannot be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. This value may be null.

discoverPeersOnSpecificFrequency

Added in API level 33
open fun discoverPeersOnSpecificFrequency(
    channel: WifiP2pManager.Channel, 
    frequencyMhz: Int, 
    listener: WifiP2pManager.ActionListener?
): Unit

Scan only a single channel specified by frequency. A discovery process involves scanning for available Wi-Fi peers for the purpose of establishing a connection.

The function call immediately returns after sending a discovery request to the framework. The application is notified of a success or failure to initiate discovery through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

The discovery remains active until a connection is initiated or a p2p group is formed. Register for WIFI_P2P_PEERS_CHANGED_ACTION intent to determine when the framework notifies of a change as peers are discovered.

Upon receiving a WIFI_P2P_PEERS_CHANGED_ACTION intent, an application can request the list of peers using requestPeers.

The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.

Use isChannelConstrainedDiscoverySupported() to determine whether the device supports this feature. If isChannelConstrainedDiscoverySupported() return false then this method will throw UnsupportedOperationException.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize This value cannot be null.
frequencyMhz Int: is the frequency of the channel to use for peer discovery.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. This value may be null.

discoverServices

Added in API level 16
open fun discoverServices(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Initiate service discovery. A discovery process involves scanning for requested services for the purpose of establishing a connection to a peer that supports an available service.

The function call immediately returns after sending a request to start service discovery to the framework. The application is notified of a success or failure to initiate discovery through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

The services to be discovered are specified with calls to addServiceRequest.

The application is notified of the response against the service discovery request through listener callbacks registered by setServiceResponseListener or setDnsSdResponseListeners, or setUpnpServiceResponseListener.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

getListenState

Added in API level 34
open fun getListenState(
    c: WifiP2pManager.Channel, 
    executor: Executor, 
    resultsCallback: Consumer<Int!>
): Unit

Get p2p listen state.

This state indicates whether p2p listen has started or stopped. The valid value is one of WIFI_P2P_LISTEN_STOPPED or WIFI_P2P_LISTEN_STARTED.

This state is also included in the ACTION_WIFI_P2P_LISTEN_STATE_CHANGED broadcast event with extra EXTRA_LISTEN_STATE.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
c WifiP2pManager.Channel: It is the channel created at initialize. This value cannot be null.
executor Executor: The executor on which callback will be invoked. This value cannot be null. Callback and listener events are dispatched through this Executor, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use Context.getMainExecutor(). Otherwise, provide an Executor that dispatches to an appropriate thread.
resultsCallback Consumer<Int!>: A callback that will return listen state WIFI_P2P_LISTEN_STOPPED or WIFI_P2P_LISTEN_STARTED This value cannot be null.

getP2pMaxAllowedVendorElementsLengthBytes

Added in API level 33
open static fun getP2pMaxAllowedVendorElementsLengthBytes(): Int

Return the maximum total length (in bytes) of all Vendor specific information elements (VSIEs) which can be set using the setVendorElements(android.net.wifi.p2p.WifiP2pManager.Channel,java.util.List,android.net.wifi.p2p.WifiP2pManager.ActionListener). The length is calculated adding the payload length + 2 bytes for each VSIE (2 bytes: 1 byte for type and 1 byte for length).

initialize

Added in API level 14
open fun initialize(
    srcContext: Context!, 
    srcLooper: Looper!, 
    listener: WifiP2pManager.ChannelListener!
): WifiP2pManager.Channel!

Registers the application with the Wi-Fi framework. This function must be the first to be called before any p2p operations are performed.

Parameters
srcContext Context!: is the context of the source
srcLooper Looper!: is the Looper on which the callbacks are receivied
listener WifiP2pManager.ChannelListener!: for callback at loss of framework communication. Can be null.
Return
WifiP2pManager.Channel! Channel instance that is necessary for performing any further p2p operations

isChannelConstrainedDiscoverySupported

Added in API level 33
open fun isChannelConstrainedDiscoverySupported(): Boolean

Check if this device supports discovery limited to a specific frequency or the social channels. Gates whether discoverPeersOnSpecificFrequency(android.net.wifi.p2p.WifiP2pManager.Channel,int,android.net.wifi.p2p.WifiP2pManager.ActionListener) and discoverPeersOnSocialChannels(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener) methods are functional on this device.

Return
Boolean true if supported, false otherwise.

isGroupClientRemovalSupported

Added in API level 33
open fun isGroupClientRemovalSupported(): Boolean

Check if this device supports removing clients from a group. Gates whether the removeClient(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.MacAddress,android.net.wifi.p2p.WifiP2pManager.ActionListener) method is functional on this device.

Return
Boolean true if supported, false otherwise.

isGroupOwnerIPv6LinkLocalAddressProvided

Added in API level 34
open fun isGroupOwnerIPv6LinkLocalAddressProvided(): Boolean

Checks whether this device, while being a group client, can discover and deliver the group owner's IPv6 link-local address.

If this method returns true and connect(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pConfig,android.net.wifi.p2p.WifiP2pManager.ActionListener) method is called with WifiP2pConfig having WifiP2pConfig#GROUP_CLIENT_IP_PROVISIONING_MODE_IPV6_LINK_LOCAL as the group client IP provisioning mode, then the group owner's IPv6 link-local address will be delivered in the group client via WIFI_P2P_CONNECTION_CHANGED_ACTION broadcast intent (i.e, group owner address in EXTRA_WIFI_P2P_INFO). If this method returns false, then IPv6 link-local addresses can still be used, but it is the responsibility of the caller to discover that address in other ways, e.g. using out-of-band communication.

Return
Boolean true if supported, false otherwise.

isSetVendorElementsSupported

Added in API level 33
open fun isSetVendorElementsSupported(): Boolean

Check if this device supports setting vendor elements. Gates whether the setVendorElements(android.net.wifi.p2p.WifiP2pManager.Channel,java.util.List,android.net.wifi.p2p.WifiP2pManager.ActionListener) method is functional on this device.

Return
Boolean true if supported, false otherwise.

registerWifiP2pListener

Added in API level 35
open fun registerWifiP2pListener(
    executor: Executor, 
    listener: WifiP2pManager.WifiP2pListener
): Unit

Add a listener to listen to Wi-Fi p2p various changes.

Parameters
executor Executor: the Executor on which to execute the callbacks. This value cannot be null. Callback and listener events are dispatched through this Executor, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use Context.getMainExecutor(). Otherwise, provide an Executor that dispatches to an appropriate thread.
listener WifiP2pManager.WifiP2pListener: listener for the Wi-Fi p2p connection changes. This value cannot be null.
Exceptions
java.lang.SecurityException if the caller is missing required permissions.
java.lang.IllegalArgumentException if incorrect input arguments are provided.

removeClient

Added in API level 33
open fun removeClient(
    channel: WifiP2pManager.Channel, 
    peerAddress: MacAddress, 
    listener: WifiP2pManager.ActionListener?
): Unit

Remove the client with the MAC address from the group.

The function call immediately returns after sending a client removal request to the framework. The application is notified of a success or failure to initiate client removal through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

The callbacks are triggered on the thread specified when initializing the channel, see initialize.

Use isGroupClientRemovalSupported() to determine whether the device supports this feature. If isGroupClientRemovalSupported() return false then this method will throw UnsupportedOperationException.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize This value cannot be null.
peerAddress MacAddress: MAC address of the client. This value cannot be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. Can be null.

removeExternalApprover

Added in API level 33
open fun removeExternalApprover(
    c: WifiP2pManager.Channel, 
    deviceAddress: MacAddress, 
    listener: WifiP2pManager.ActionListener?
): Unit

Remove the external approver for a specific peer. The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.
Requires android.Manifest.permission#MANAGE_WIFI_NETWORK_SELECTION

Parameters
c WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener). This value cannot be null.
deviceAddress MacAddress: the peer which is bound to the external approver. This value cannot be null.
listener WifiP2pManager.ActionListener?: for callback on success or failure. This value may be null.

removeGroup

Added in API level 14
open fun removeGroup(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Remove the current p2p group.

The function call immediately returns after sending a group removal request to the framework. The application is notified of a success or failure to initiate group removal through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

removeLocalService

Added in API level 16
open fun removeLocalService(
    channel: WifiP2pManager.Channel!, 
    servInfo: WifiP2pServiceInfo!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Remove a registered local service added with addLocalService

The function call immediately returns after sending a request to remove a local service to the framework. The application is notified of a success or failure to add service through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
servInfo WifiP2pServiceInfo!: is the local service information.
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

removeServiceRequest

Added in API level 16
open fun removeServiceRequest(
    channel: WifiP2pManager.Channel!, 
    req: WifiP2pServiceRequest!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Remove a specified service discovery request added with addServiceRequest

The function call immediately returns after sending a request to remove service discovery request to the framework. The application is notified of a success or failure to add service through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
req WifiP2pServiceRequest!: is the service discovery request.
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

requestConnectionInfo

Added in API level 14
open fun requestConnectionInfo(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ConnectionInfoListener!
): Unit

Request device connection info.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ConnectionInfoListener!: for callback when connection info is available. Can be null.

requestDeviceInfo

Added in API level 29
open fun requestDeviceInfo(
    c: WifiP2pManager.Channel, 
    listener: WifiP2pManager.DeviceInfoListener
): Unit

Request Device Info

This method provides the device info in the form of a android.net.wifi.p2p.WifiP2pDevice. Valid android.net.wifi.p2p.WifiP2pDevice is returned when p2p is enabled. To get information notifications on P2P getting enabled refers WIFI_P2P_STATE_ENABLED.

This android.net.wifi.p2p.WifiP2pDevice is returned using the DeviceInfoListener listener.

android.net.wifi.p2p.WifiP2pDevice#deviceAddress is only available if the caller holds the android.Manifest.permission#LOCAL_MAC_ADDRESS permission, and holds the anonymized MAC address (02:00:00:00:00:00) otherwise.

This information is also included in the WIFI_P2P_THIS_DEVICE_CHANGED_ACTION broadcast event with extra EXTRA_WIFI_P2P_DEVICE.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
c WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener). This value cannot be null.
listener WifiP2pManager.DeviceInfoListener: for callback when network info is available. This value cannot be null.

requestDiscoveryState

Added in API level 29
open fun requestDiscoveryState(
    c: WifiP2pManager.Channel, 
    listener: WifiP2pManager.DiscoveryStateListener
): Unit

Request p2p discovery state.

This state indicates whether p2p discovery has started or stopped. The valid value is one of WIFI_P2P_DISCOVERY_STARTED or WIFI_P2P_DISCOVERY_STOPPED. The state is returned using the DiscoveryStateListener listener.

This state is also included in the WIFI_P2P_DISCOVERY_CHANGED_ACTION broadcast event with extra EXTRA_DISCOVERY_STATE.

Parameters
c WifiP2pManager.Channel: is the channel created at initialize. This value cannot be null.
listener WifiP2pManager.DiscoveryStateListener: for callback when discovery state is available. This value cannot be null.

requestGroupInfo

Added in API level 14
open fun requestGroupInfo(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.GroupInfoListener!
): Unit

Request p2p group info.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.GroupInfoListener!: for callback when group info is available. Can be null.

requestNetworkInfo

Added in API level 29
open fun requestNetworkInfo(
    c: WifiP2pManager.Channel, 
    listener: WifiP2pManager.NetworkInfoListener
): Unit

Request network info.

This method provides the network info in the form of a android.net.NetworkInfo. android.net.NetworkInfo#isAvailable() indicates the p2p availability and android.net.NetworkInfo#getDetailedState() reports the current fine-grained state of the network. This android.net.NetworkInfo is returned using the NetworkInfoListener listener.

This information is also included in the WIFI_P2P_CONNECTION_CHANGED_ACTION broadcast event with extra EXTRA_NETWORK_INFO.

Parameters
c WifiP2pManager.Channel: is the channel created at initialize. This value cannot be null.
listener WifiP2pManager.NetworkInfoListener: for callback when network info is available. This value cannot be null.

requestP2pState

Added in API level 29
open fun requestP2pState(
    c: WifiP2pManager.Channel, 
    listener: WifiP2pManager.P2pStateListener
): Unit

Request p2p enabled state.

This state indicates whether Wi-Fi p2p is enabled or disabled. The valid value is one of WIFI_P2P_STATE_DISABLED or WIFI_P2P_STATE_ENABLED. The state is returned using the P2pStateListener listener.

This state is also included in the WIFI_P2P_STATE_CHANGED_ACTION broadcast event with extra EXTRA_WIFI_STATE.

Parameters
c WifiP2pManager.Channel: is the channel created at initialize. This value cannot be null.
listener WifiP2pManager.P2pStateListener: for callback when p2p state is available. This value cannot be null.

requestPeers

Added in API level 14
open fun requestPeers(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.PeerListListener!
): Unit

Request the current list of peers.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.PeerListListener!: for callback when peer list is available. Can be null.

setConnectionRequestResult

Added in API level 33
open fun setConnectionRequestResult(
    c: WifiP2pManager.Channel, 
    deviceAddress: MacAddress, 
    result: Int, 
    listener: WifiP2pManager.ActionListener?
): Unit

Set the result for the incoming request from a specific peer. The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.
Requires android.Manifest.permission#MANAGE_WIFI_NETWORK_SELECTION

Parameters
c WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener). This value cannot be null.
deviceAddress MacAddress: the peer which is bound to the external approver. This value cannot be null.
result Int: the response for the incoming request. Value is android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_ACCEPT, android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_REJECT, android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_DEFER_TO_SERVICE, or android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_DEFER_SHOW_PIN_TO_SERVICE
listener WifiP2pManager.ActionListener?: for callback on success or failure. This value may be null.

setConnectionRequestResult

Added in API level 33
open fun setConnectionRequestResult(
    c: WifiP2pManager.Channel, 
    deviceAddress: MacAddress, 
    result: Int, 
    pin: String?, 
    listener: WifiP2pManager.ActionListener?
): Unit

Set the result with PIN for the incoming request from a specific peer. The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.
Requires android.Manifest.permission#MANAGE_WIFI_NETWORK_SELECTION

Parameters
c WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener). This value cannot be null.
deviceAddress MacAddress: the peer which is bound to the external approver. This value cannot be null.
result Int: the response for the incoming request. Value is android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_ACCEPT, android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_REJECT, android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_DEFER_TO_SERVICE, or android.net.wifi.p2p.WifiP2pManager#CONNECTION_REQUEST_DEFER_SHOW_PIN_TO_SERVICE
pin String?: the PIN for the incoming request. This value may be null.
listener WifiP2pManager.ActionListener?: for callback on success or failure. This value may be null.

setDnsSdResponseListeners

Added in API level 16
open fun setDnsSdResponseListeners(
    channel: WifiP2pManager.Channel!, 
    servListener: WifiP2pManager.DnsSdServiceResponseListener!, 
    txtListener: WifiP2pManager.DnsSdTxtRecordListener!
): Unit

Register a callback to be invoked on receiving Bonjour service discovery response.

see discoverServices for the detail.

Parameters
channel WifiP2pManager.Channel!:
servListener WifiP2pManager.DnsSdServiceResponseListener!: is for listening to a Bonjour service response
txtListener WifiP2pManager.DnsSdTxtRecordListener!: is for listening to a Bonjour TXT record response

setServiceResponseListener

Added in API level 16
open fun setServiceResponseListener(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ServiceResponseListener!
): Unit

Register a callback to be invoked on receiving service discovery response. Used only for vendor specific protocol right now. For Bonjour or Upnp, use setDnsSdResponseListeners or setUpnpServiceResponseListener respectively.

see discoverServices for the detail.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ServiceResponseListener!: for callbacks on receiving service discovery response.

setUpnpServiceResponseListener

Added in API level 16
open fun setUpnpServiceResponseListener(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.UpnpServiceResponseListener!
): Unit

Register a callback to be invoked on receiving upnp service discovery response.

see discoverServices for the detail.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.UpnpServiceResponseListener!: for callbacks on receiving service discovery response.

setVendorElements

Added in API level 33
open fun setVendorElements(
    c: WifiP2pManager.Channel, 
    vendorElements: MutableList<ScanResult.InformationElement!>, 
    listener: WifiP2pManager.ActionListener?
): Unit

Set/Clear vendor specific information elements (VSIEs) to be published during Wi-Fi Direct (P2P) discovery. Once Channel#close() is called, the vendor information elements will be cleared from framework. The information element format is defined in the IEEE 802.11-2016 spec Table 9-77.

To clear the previously set vendor elements, call this API with an empty List.

The maximum accumulated length of all VSIEs must be before the limit specified by getP2pMaxAllowedVendorElementsLengthBytes().

To publish vendor elements, this API should be called before peer discovery API, ex. discoverPeers(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener).

Use isSetVendorElementsSupported() to determine whether the device supports this feature. If isSetVendorElementsSupported() return false then this method will throw UnsupportedOperationException.
Requires android.Manifest.permission#NEARBY_WIFI_DEVICES and android.Manifest.permission#OVERRIDE_WIFI_CONFIG

Parameters
c WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener). This value cannot be null.
vendorElements MutableList<ScanResult.InformationElement!>: application information as vendor-specific information elements. This value cannot be null.
listener WifiP2pManager.ActionListener?: for callback when network info is available. This value may be null.

setWfdInfo

Added in API level 34
open fun setWfdInfo(
    channel: WifiP2pManager.Channel, 
    wfdInfo: WifiP2pWfdInfo, 
    listener: WifiP2pManager.ActionListener?
): Unit

Set Wifi Display information.
Requires android.Manifest.permission#CONFIGURE_WIFI_DISPLAY

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize This value cannot be null.
wfdInfo WifiP2pWfdInfo: the Wifi Display information to set This value cannot be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. Can be null.

startListening

Added in API level 33
open fun startListening(
    channel: WifiP2pManager.Channel, 
    listener: WifiP2pManager.ActionListener?
): Unit

Force p2p to enter listen state. When this API is called, this device will periodically enter LISTENING state until stopListening(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener) or stopPeerDiscovery(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener) are called. While in LISTENING state, this device will dwell at its social channel and respond to probe requests from other Wi-Fi Direct peers.

If targeting android.os.Build.VERSION_CODES#TIRAMISU or later, the application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION. If targeting an earlier release than android.os.Build.VERSION_CODES#TIRAMISU, the application must have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener) This value cannot be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. This value may be null.

startPeerDiscovery

Added in API level 35
open fun startPeerDiscovery(
    channel: WifiP2pManager.Channel, 
    config: WifiP2pDiscoveryConfig, 
    listener: WifiP2pManager.ActionListener?
): Unit

Initiate peer discovery. A discovery process involves scanning for available Wi-Fi peers for the purpose of establishing a connection. See discoverPeers(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener) for more details. This method accepts a WifiP2pDiscoveryConfig object specifying the desired parameters for the peer discovery. The configuration object allows the specification of the scan type (ex. FULL, SOCIAL) and the inclusion of vendor-specific configuration data. The application must have android.Manifest.permission#NEARBY_WIFI_DEVICES with android:usesPermissionFlags="neverForLocation". If the application does not declare android:usesPermissionFlags="neverForLocation", then it must also have android.Manifest.permission#ACCESS_FINE_LOCATION.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize This value cannot be null.
config WifiP2pDiscoveryConfig: is the configuration for this peer discovery This value cannot be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. This value may be null.

stopListening

Added in API level 33
open fun stopListening(
    channel: WifiP2pManager.Channel, 
    listener: WifiP2pManager.ActionListener?
): Unit

Force p2p to exit listen state. When this API is called, this device will stop entering LISTENING state periodically which is triggered by startListening(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener). If there are running peer discovery which is triggered by discoverPeers(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener) or running service discovery which is triggered by discoverServices(android.net.wifi.p2p.WifiP2pManager.Channel,android.net.wifi.p2p.WifiP2pManager.ActionListener), they will be stopped as well.

Parameters
channel WifiP2pManager.Channel: is the channel created at initialize(android.content.Context,android.os.Looper,android.net.wifi.p2p.WifiP2pManager.ChannelListener) This value cannot be null.
listener WifiP2pManager.ActionListener?: for callbacks on success or failure. This value may be null.

stopPeerDiscovery

Added in API level 16
open fun stopPeerDiscovery(
    channel: WifiP2pManager.Channel!, 
    listener: WifiP2pManager.ActionListener!
): Unit

Stop an ongoing peer discovery

The function call immediately returns after sending a stop request to the framework. The application is notified of a success or failure to initiate stop through listener callbacks ActionListener#onSuccess or ActionListener#onFailure.

If P2P Group is in the process of being created, this call will fail (report failure via listener. The applicantion should listen to WIFI_P2P_CONNECTION_CHANGED_ACTION to ensure the state is not android.net.NetworkInfo.State#CONNECTING and repeat calling when the state changes.

Parameters
channel WifiP2pManager.Channel!: is the channel created at initialize
listener WifiP2pManager.ActionListener!: for callbacks on success or failure. Can be null.

unregisterWifiP2pListener

Added in API level 35
open fun unregisterWifiP2pListener(listener: WifiP2pManager.WifiP2pListener): Unit

Remove a listener added using registerWifiP2pListener(java.util.concurrent.Executor,android.net.wifi.p2p.WifiP2pManager.WifiP2pListener)

Parameters
listener WifiP2pManager.WifiP2pListener: the listener to be removed. This value cannot be null.
Exceptions
java.lang.IllegalArgumentException if incorrect input arguments are provided.