标签：android   耗时任务   looper   handler   anr   

HandlerThread 

public class HandlerThread extends Thread {
    private int mPriority;  
    private int mTid =-1; 
    private Looper mLooper; 
 
    publicHandlerThread(String name) {
        super(name);
        mPriority =Process.THREAD_PRIORITY_DEFAULT;
    }
 
    publicHandlerThread(String name, int priority) {
        super(name);
        mPriority =priority;
    }
 
    protected void onLooperPrepared() {
    }
 
    public void run() {
        mTid =Process.myTid();
        Looper.prepare();
        synchronized(this) {
            mLooper =Looper.myLooper();
            notifyAll();   
        }
       Process.setThreadPriority(mPriority);
       onLooperPrepared();
        Looper.loop();  
        mTid = -1;
    }
 


    public Looper getLooper() {
        if (!isAlive()) {
            return null;
        }
 
        // If the threadhas been started, wait until the looper has been created.
        synchronized(this) {
            while(isAlive() && mLooper == null) {
                try {
                   wait();
                } catch(InterruptedException e) {
                }
            }
        }
        return mLooper;
    }
 
    public boolean quit(){
        Looper looper =getLooper();
        if (looper !=null) {
           looper.quit();
            return true;
        }
        return false;
    }
 


    public intgetThreadId() {
        return mTid;
    }
}

经典应用

public class BackService extends Service {

	private ServiceHandler serviceHandler;

	@Override
	public IBinder onBind(Intent arg0) {
		return null;
	}


	private final class ServiceHandler extends Handler {


		public ServiceHandler(Looper looper) {
			super(looper);
		}


		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);
			onHandleIntent((Intent) msg.obj);
			// 在其参数startId跟最后启动该service时生成的ID相等时才会执行停止服务。
			stopSelf(msg.arg1);
		}
	}


	@Override
	public void onCreate() {
		super.onCreate();
		HandlerThread thread = new HandlerThread("BackService");
		thread.start();


		Looper serviceLooper = thread.getLooper();
		serviceHandler = new ServiceHandler(serviceLooper);
	}


	@Override
	public void onStart(Intent intent, int startId) {
		Message msg = serviceHandler.obtainMessage();
		msg.arg1 = startId;
		msg.obj = intent;
		serviceHandler.sendMessage(msg);
	}


	protected void onHandleIntent(Intent intent) {
               //做你的异步任务
	}
}

android耗时任务_HandlerThread

标签：android   耗时任务   looper   handler   anr   

原文地址：http://blog.csdn.net/w2865673691/article/details/46048793