androidx.core.content

Kotlin |Java

Classes

ContentProviderCompat	Helper for accessing features in `android.content.ContentProvider` in a backwards compatible fashion.
ContentResolverCompat	Helper for accessing features in `android.content.ContentResolver` in a backwards compatible fashion.
ContextCompat	Helper for accessing features in `android.content.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 `android.content.Intent`.
LocusIdCompat	An identifier for an unique state (locus) in the application.
MimeTypeFilter	Provides utility methods for matching MIME type filters used in ContentProvider.
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

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

For android.content.Context
T?	`Context.getSystemService()` Return the handle to a system-level service by class.
Unit	`Context.withStyledAttributes(set: AttributeSet? = null, attrs: IntArray, @AttrRes defStyleAttr: Int = 0, @StyleRes defStyleRes: Int = 0, block: TypedArray.() -> Unit)` Executes block on a TypedArray receiver.
Unit	`Context.withStyledAttributes(@StyleRes resourceId: Int, attrs: IntArray, block: TypedArray.() -> Unit)` Executes block on a TypedArray receiver.

For android.content.SharedPreferences
Unit	`SharedPreferences.edit(commit: Boolean = false, action: Editor.() -> Unit)` Allows editing of this preference instance with a call to apply or commit to persist the changes.

Top-level functions

contentValuesOf

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

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

Exceptions
`IllegalArgumentException`	When a value is not a supported type of ContentValues.

Extension functions

edit

inline fun SharedPreferences.edit(
    commit: Boolean = false, 
    action: 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

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

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

See Also

ContextCompat.getSystemService

withStyledAttributes

inline fun Context.withStyledAttributes(
    set: AttributeSet? = null, 
    attrs: IntArray, 
    @AttrRes defStyleAttr: Int = 0, 
    @StyleRes defStyleRes: 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: 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: 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.

See Also

withStyledAttributes

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

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

Parameters
attrs: IntArray	The desired attributes. These attribute IDs must be sorted in ascending order.

See Also