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DataSetObservable
public
class
DataSetObservable
extends Observable<DataSetObserver>
A specialization of Observable for DataSetObserver
that provides methods for sending notifications to a list of
DataSetObserver objects.
Summary
Inherited methods |
|---|
|
|
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object.
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
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notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
|
Public constructors
DataSetObservable
public DataSetObservable ()
Public methods
notifyChanged
public void notifyChanged ()
Invokes DataSetObserver.onChanged on each observer.
Called when the contents of the data set have changed. The recipient
will obtain the new contents the next time it queries the data set.
notifyInvalidated
public void notifyInvalidated ()
Invokes DataSetObserver.onInvalidated on each observer.
Called when the data set is no longer valid and cannot be queried again,
such as when the data set has been closed.
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# DataSetObservable\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \nSummary: [Inherited Fields](#inhfields) \\| [Ctors](#pubctors) \\| [Methods](#pubmethods) \\| [Inherited Methods](#inhmethods) \n\nDataSetObservable\n=================\n\n*** ** * ** ***\n\n[Kotlin](/reference/kotlin/android/database/DataSetObservable \"View this page in Kotlin\") \\|Java\n\n\n`\npublic\n\n\nclass\nDataSetObservable\n`\n\n\n`\n\n\n`\n\n`\n\nextends `[Observable](/reference/android/database/Observable)`\u003c`[DataSetObserver](/reference/android/database/DataSetObserver)`\u003e\n\n\n`\n\n`\n\n\n`\n\n|---|---|------------------------------------|\n| [java.lang.Object](/reference/java/lang/Object) |||\n| ↳ | [android.database.Observable](/reference/android/database/Observable)\\\u003c[android.database.DataSetObserver](/reference/android/database/DataSetObserver)\\\u003e ||\n| | ↳ | android.database.DataSetObservable |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nA specialization of [Observable](/reference/android/database/Observable) for [DataSetObserver](/reference/android/database/DataSetObserver)\nthat provides methods for sending notifications to a list of\n[DataSetObserver](/reference/android/database/DataSetObserver) objects.\n\nSummary\n-------\n\n| ### Inherited fields |\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| From class [android.database.Observable](/reference/android/database/Observable) |---------------------------------------------------------------------|----------------------------------------------------------------------------------------| | ` protected final `[ArrayList](/reference/java/util/ArrayList)`\u003cT\u003e` | [mObservers](/reference/android/database/Observable#mObservers) The list of observers. | |\n\n| ### Public constructors ||\n|------------------------------------------------------------------------------------------------|---|\n| ` `[DataSetObservable](/reference/android/database/DataSetObservable#DataSetObservable())`() ` |\n\n| ### Public methods ||\n|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` void` | ` `[notifyChanged](/reference/android/database/DataSetObservable#notifyChanged())`() ` Invokes [DataSetObserver.onChanged](/reference/android/database/DataSetObserver#onChanged()) on each observer. |\n| ` void` | ` `[notifyInvalidated](/reference/android/database/DataSetObservable#notifyInvalidated())`() ` Invokes [DataSetObserver.onInvalidated](/reference/android/database/DataSetObserver#onInvalidated()) on each observer. |\n\n| ### Inherited methods |\n|-----------------------|---|\n| From class ` `[android.database.Observable](/reference/android/database/Observable)` ` |---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` void` | ` `[registerObserver](/reference/android/database/Observable#registerObserver(T))`(`[DataSetObserver](/reference/android/database/DataSetObserver)` observer) ` Adds an observer to the list. | | ` void` | ` `[unregisterAll](/reference/android/database/Observable#unregisterAll())`() ` Remove all registered observers. | | ` void` | ` `[unregisterObserver](/reference/android/database/Observable#unregisterObserver(T))`(`[DataSetObserver](/reference/android/database/DataSetObserver)` observer) ` Removes a previously registered observer. | ||\n| From class ` `[java.lang.Object](/reference/java/lang/Object)` ` |---------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](/reference/java/lang/Object) | ` `[clone](/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](/reference/java/lang/Object)` obj) ` Indicates whether some other object is \"equal to\" this one. | | ` void` | ` `[finalize](/reference/java/lang/Object#finalize())`() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final `[Class](/reference/java/lang/Class)`\u003c?\u003e` | ` `[getClass](/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this `Object`. | | ` int` | ` `[hashCode](/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](/reference/java/lang/String) | ` `[toString](/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait(long,%20int))`(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait(long))`(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait())`() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||\n\nPublic constructors\n-------------------\n\n### DataSetObservable\n\n```\npublic DataSetObservable ()\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nPublic methods\n--------------\n\n### notifyChanged\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic void notifyChanged ()\n```\n\nInvokes [DataSetObserver.onChanged](/reference/android/database/DataSetObserver#onChanged()) on each observer.\nCalled when the contents of the data set have changed. The recipient\nwill obtain the new contents the next time it queries the data set.\n\n\u003cbr /\u003e\n\n### notifyInvalidated\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic void notifyInvalidated ()\n```\n\nInvokes [DataSetObserver.onInvalidated](/reference/android/database/DataSetObserver#onInvalidated()) on each observer.\nCalled when the data set is no longer valid and cannot be queried again,\nsuch as when the data set has been closed.\n\n\u003cbr /\u003e"]]
