Added in API level 1

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.

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.
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