androidx.core.content

---

Kotlin |Java

Interfaces

OnConfigurationChangedProvider	Interface for components that can dispatch calls from ComponentCallbacks.onConfigurationChanged.
OnTrimMemoryProvider	Interface for components that can dispatch calls from ComponentCallbacks2.onTrimMemory.

Classes

ContentProviderCompat	Helper for accessing features in android.content.ContentProvider in a backwards compatible fashion.
ContentResolverCompat	Helper for accessing features in ContentResolver in a backwards compatible fashion.
ContextCompat	Helper for accessing features in Context.
FileProvider	FileProvider is a special subclass of ContentProvider that facilitates secure sharing of files associated with an app by creating a content://Uri for a file instead of a file:///Uri.
IntentCompat	Helper for accessing features in Intent.
IntentSanitizer	This class is used to make a sanitized copy of an Intent.
IntentSanitizer.Builder	General strategy of building is to only offer additive “or” operations that are chained together.
LocusIdCompat	An identifier for an unique state (locus) in the application.
MimeTypeFilter	Provides utility methods for matching MIME type filters used in ContentProvider.
PackageManagerCompat	Helper for accessing features in PackageManager.
PermissionChecker	This class provides permission check APIs that verify both the permission and the associated app op for this permission if such is defined.
SharedPreferencesCompat	This class is deprecated. This compatibility class is no longer required.
SharedPreferencesCompat.EditorCompat	This class is deprecated. This compatibility class is no longer required.
UnusedAppRestrictionsBackportCallback	Wrapper class for {IUnusedAppRestrictionsBackportCallback}.
UnusedAppRestrictionsBackportService	Wrapper class for IUnusedAppRestrictionsBackportService.
UnusedAppRestrictionsConstants	Shared constants related to Unused App Restrictions (e.g. Permission Revocation, App Hibernation).
UriMatcherCompat	Helper for accessing UriMatcher to create Uri Predicate.

Top-level functions summary

ContentValues

contentValuesOf(vararg pairs: Pair<String, Any?>) Returns a new ContentValues with the given key/value pairs as elements.

Extension functions summary

inline Unit	SharedPreferences.edit(commit: Boolean, action: SharedPreferences.Editor.() -> Unit) Allows editing of this preference instance with a call to apply or commit to persist the changes.
inline T?	<T : Any> Context.getSystemService() Return the handle to a system-level service by class.
inline Unit	Context.withStyledAttributes(     resourceId: @StyleRes Int,     attrs: IntArray,     block: TypedArray.() -> Unit ) Executes block on a TypedArray receiver.
inline Unit	Context.withStyledAttributes(     set: AttributeSet?,     attrs: IntArray,     defStyleAttr: @AttrRes Int,     defStyleRes: @StyleRes Int,     block: TypedArray.() -> Unit ) Executes block on a TypedArray receiver.

Top-level functions

contentValuesOf

Artifact: androidx.core:core-ktx

View Source

fun contentValuesOf(vararg pairs: Pair<String, Any?>): ContentValues

Returns a new ContentValues with the given key/value pairs as elements.

Throws
kotlin.IllegalArgumentException	When a value is not a supported type of ContentValues.

Extension functions

edit

Artifact: androidx.core:core-ktx

View Source

Added in 1.1.0

inline fun SharedPreferences.edit(commit: Boolean = false, action: SharedPreferences.Editor.() -> Unit): Unit

Allows editing of this preference instance with a call to apply or commit to persist the changes. Default behaviour is apply.

prefs.edit {
    putString("key", value)
}

To commit changes:

prefs.edit(commit = true) {
    putString("key", value)
}

getSystemService

Artifact: androidx.core:core-ktx

View Source

inline fun <T : Any> Context.getSystemService(): T?

Return the handle to a system-level service by class.

See also
getSystemService

withStyledAttributes

Artifact: androidx.core:core-ktx

View Source

Added in 1.1.0

inline fun Context.withStyledAttributes(
    resourceId: @StyleRes Int,
    attrs: IntArray,
    block: TypedArray.() -> Unit
): Unit

Executes block on a TypedArray receiver. The TypedArray holds the values defined by the style resource resourceId which are listed in attrs.

Parameters
resourceId: @StyleRes Int	The desired style resource.
attrs: IntArray	The desired attributes. These attribute IDs must be sorted in ascending order.
block: TypedArray.() -> Unit	The block that will be executed.

See also
obtainStyledAttributes
obtainStyledAttributes

withStyledAttributes

Artifact: androidx.core:core-ktx

View Source

Added in 1.1.0

inline fun Context.withStyledAttributes(
    set: AttributeSet? = null,
    attrs: IntArray,
    defStyleAttr: @AttrRes Int = 0,
    defStyleRes: @StyleRes Int = 0,
    block: TypedArray.() -> Unit
): Unit

Executes block on a TypedArray receiver. The TypedArray holds the attribute values in set that are listed in attrs. In addition, if the given AttributeSet specifies a style class (through the style attribute), that style will be applied on top of the base attributes it defines.

Parameters
set: AttributeSet? = null	The base set of attribute values.
attrs: IntArray	The desired attributes to be retrieved. These attribute IDs must be sorted in ascending order.
defStyleAttr: @AttrRes Int = 0	An attribute in the current theme that contains a reference to a style resource that supplies defaults values for the TypedArray. Can be 0 to not look for defaults.
defStyleRes: @StyleRes Int = 0	A resource identifier of a style resource that supplies default values for the TypedArray, used only if defStyleAttr is 0 or can not be found in the theme. Can be 0 to not look for defaults.
block: TypedArray.() -> Unit	The block that will be executed.

See also
obtainStyledAttributes
obtainStyledAttributes