in.srain.cube.concurrent

Class SimpleTask

java.lang.Object

in.srain.cube.concurrent.SimpleTask

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

DownloadTask

public abstract class SimpleTask
extends java.lang.Object
implements java.lang.Runnable

A class which encapsulate a task that can execute in background thread and can be cancelled. memory require:

Shadow heap size of AtomicInteger: 12 + 4 = 16 bytes; Shadow heap size of SimpleTask: 12 + 4 + 4 = 20. After aligned: 24 bytes; Retained heap size of SimpleTask: 16 + 24 = 40 bytes.

Constructor Summary

Constructors

Constructor and Description
SimpleTask()

Method Summary

Methods

Modifier and Type	Method and Description
void	cancel()
abstract void	doInBackground() A worker will execute this method in a background thread
boolean	isCancelled() check whether this work is canceled.
boolean	isDone() check whether this work has done
protected void	onCancel() When the Task is Cancelled.
abstract void	onFinish(boolean canceled) will be called after doInBackground();
static void	post(java.lang.Runnable r)
static void	postDelay(java.lang.Runnable r, long delayMillis)
void	restart() Restart the task, just set the state to STATE_NEW
void	run()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimpleTask

public SimpleTask()

Method Detail

doInBackground

public abstract void doInBackground()

A worker will execute this method in a background thread

onFinish

public abstract void onFinish(boolean canceled)

will be called after doInBackground();

onCancel

protected void onCancel()

When the Task is Cancelled.

restart

public void restart()

Restart the task, just set the state to STATE_NEW

run

public void run()

Specified by:

run in interface java.lang.Runnable

isCancelled

public boolean isCancelled()

check whether this work is canceled.

isDone

public boolean isDone()

check whether this work has done

Returns:

cancel

public void cancel()

post

public static void post(java.lang.Runnable r)

postDelay

public static void postDelay(java.lang.Runnable r,
             long delayMillis)