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
`<init>()`

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 `ContentObserver#onChange` on each observer.
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

<init>

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 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