ContentObservable

Kotlin |Java

open class ContentObservable : Observable<ContentObserver!>

kotlin.Any
↳	android.database.Observable<android.database.ContentObserver>
	↳	android.database.ContentObservable

A specialization of Observable for ContentObserver that provides methods for sending notifications to a list of ContentObserver objects.

Summary

Public constructors
`ContentObservable()`

Public methods
open Unit	`dispatchChange(selfChange: Boolean)` Invokes `ContentObserver.dispatchChange(boolean)` on each observer.
open Unit	`dispatchChange(selfChange: Boolean, uri: Uri!)` Invokes `ContentObserver.dispatchChange(boolean, Uri)` on each observer.
open Unit	`notifyChange(selfChange: Boolean)` Invokes android.
open Unit	`registerObserver(observer: ContentObserver!)`

Inherited functions

From class Observable

Unit

unregisterAll()

Remove all registered observers.

Unit

unregisterObserver(observer: T)

Removes a previously registered observer. The observer must not be null and it must already have been registered.

Inherited properties

From class Observable

ArrayList<T>!

mObservers

The list of observers. An observer can be in the list at most once and will never be null.

Public constructors

ContentObservable

ContentObservable()

Public methods

dispatchChange

Added in API level 1
Deprecated in API level 16

open fun dispatchChange(selfChange: Boolean): Unit

Deprecated: Use dispatchChange(boolean,android.net.Uri) instead.

Invokes ContentObserver.dispatchChange(boolean) on each observer.

If selfChange is true, only delivers the notification to the observer if it has indicated that it wants to receive self-change notifications by implementing ContentObserver.deliverSelfNotifications to return true.

Parameters
`selfChange`	Boolean: True if this is a self-change notification.

dispatchChange

Added in API level 16

open fun dispatchChange(
    selfChange: Boolean, 
    uri: Uri!
): Unit

Invokes ContentObserver.dispatchChange(boolean, Uri) on each observer. Includes the changed content Uri when available.

Parameters
`selfChange`	Boolean: True if this is a self-change notification.
`uri`	Uri!: The Uri of the changed content, or null if unknown.

notifyChange

Added in API level 1
Deprecated in API level 16

open fun notifyChange(selfChange: Boolean): Unit

Deprecated: Use #dispatchChange instead.

Invokes android.database.ContentObserver#onChange on each observer.

Parameters
`selfChange`	Boolean: True if this is a self-change notification.

registerObserver

Added in API level 1

open fun registerObserver(observer: ContentObserver!): Unit

Parameters
`observer`	ContentObserver!: the observer to register

Exceptions
`java.lang.IllegalArgumentException`	the observer is null
`java.lang.IllegalStateException`	the observer is already registered