AsyncQueryHandler.WorkerHandler

Kotlin |Java

protected class AsyncQueryHandler.WorkerHandler
extends Handler

Summary

Public constructors
`WorkerHandler(Looper looper)`

Public methods
`void`	`handleMessage(Message msg)` Subclasses must implement this to receive messages.

Inherited methods

From class


        
          android.os.Handler

`static Handler`	`createAsync(Looper looper, Handler.Callback callback)` Create a new Handler whose posted messages and runnables are not subject to synchronization barriers such as display vsync.
`static Handler`	`createAsync(Looper looper)` Create a new Handler whose posted messages and runnables are not subject to synchronization barriers such as display vsync.
`void`	`dispatchMessage(Message msg)` Handle system messages here.
`final void`	`dump(Printer pw, String prefix)`
`final Looper`	`getLooper()`
`String`	`getMessageName(Message message)` Returns a string representing the name of the specified message.
`void`	`handleMessage(Message msg)` Subclasses must implement this to receive messages.
`final boolean`	`hasCallbacks(Runnable r)` Check if there are any pending posts of messages with callback r in the message queue.
`final boolean`	`hasMessages(int what)` Check if there are any pending posts of messages with code 'what' in the message queue.
`final boolean`	`hasMessages(int what, Object object)` Check if there are any pending posts of messages with code 'what' and whose obj is 'object' in the message queue.
`final Message`	`obtainMessage(int what, Object obj)` Same as `obtainMessage()`, except that it also sets the what and obj members of the returned Message.
`final Message`	`obtainMessage()` Returns a new `Message` from the global message pool.
`final Message`	`obtainMessage(int what, int arg1, int arg2)` Same as `obtainMessage()`, except that it also sets the what, arg1 and arg2 members of the returned Message.
`final Message`	`obtainMessage(int what, int arg1, int arg2, Object obj)` Same as `obtainMessage()`, except that it also sets the what, obj, arg1,and arg2 values on the returned Message.
`final Message`	`obtainMessage(int what)` Same as `obtainMessage()`, except that it also sets the what member of the returned Message.
`final boolean`	`post(Runnable r)` Causes the Runnable r to be added to the message queue.
`final boolean`	`postAtFrontOfQueue(Runnable r)` Posts a message to an object that implements Runnable.
`final boolean`	`postAtTime(Runnable r, long uptimeMillis)` Causes the Runnable r to be added to the message queue, to be run at a specific time given by `uptimeMillis`.
`final boolean`	`postAtTime(Runnable r, Object token, long uptimeMillis)` Causes the Runnable r to be added to the message queue, to be run at a specific time given by `uptimeMillis`.
`final boolean`	`postDelayed(Runnable r, long delayMillis)` Causes the Runnable r to be added to the message queue, to be run after the specified amount of time elapses.
`final boolean`	`postDelayed(Runnable r, Object token, long delayMillis)` Causes the Runnable r to be added to the message queue, to be run after the specified amount of time elapses.
`final void`	`removeCallbacks(Runnable r)` Remove any pending posts of Runnable r that are in the message queue.
`final void`	`removeCallbacks(Runnable r, Object token)` Remove any pending posts of Runnable `r` with Object `token` that are in the message queue.
`final void`	`removeCallbacksAndMessages(Object token)` Remove any pending posts of callbacks and sent messages whose `obj` is `token`.
`final void`	`removeMessages(int what)` Remove any pending posts of messages with code 'what' that are in the message queue.
`final void`	`removeMessages(int what, Object object)` Remove any pending posts of messages with code 'what' and whose obj is 'object' that are in the message queue.
`final boolean`	`sendEmptyMessage(int what)` Sends a Message containing only the what value.
`final boolean`	`sendEmptyMessageAtTime(int what, long uptimeMillis)` Sends a Message containing only the what value, to be delivered at a specific time.
`final boolean`	`sendEmptyMessageDelayed(int what, long delayMillis)` Sends a Message containing only the what value, to be delivered after the specified amount of time elapses.
`final boolean`	`sendMessage(Message msg)` Pushes a message onto the end of the message queue after all pending messages before the current time.
`final boolean`	`sendMessageAtFrontOfQueue(Message msg)` Enqueue a message at the front of the message queue, to be processed on the next iteration of the message loop.
`boolean`	`sendMessageAtTime(Message msg, long uptimeMillis)` Enqueue a message into the message queue after all pending messages before the absolute time (in milliseconds) `uptimeMillis`.
`final boolean`	`sendMessageDelayed(Message msg, long delayMillis)` Enqueue a message into the message queue after all pending messages before (current time + delayMillis).
`String`	`toString()` Returns a string representation of the object.

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`	`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

WorkerHandler

Added in API level 1

public WorkerHandler (Looper looper)

Parameters
`looper`	`Looper`

Public methods

handleMessage

Added in API level 1

public void handleMessage (Message msg)

Subclasses must implement this to receive messages.

Parameters
`msg`	`Message`: This value cannot be `null`.

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.

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java.lang.Object
↳	android.os.Handler
	↳	android.content.AsyncQueryHandler.WorkerHandler

Sunbelt Computer Software

PL/B Language Development and Support

AsyncQueryHandler.WorkerHandler

Summary

Public constructors

Public methods

Inherited methods

Public constructors

WorkerHandler

Public methods

handleMessage