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`