Android 中三种使用线程的方法

通过继承Thread类，并改写run方法来实现一个线程

 

public class MyThread extends Thread {

    //继承Thread类，并改写其run方法

    private final static String TAG = "My Thread ===> ";

    public void run(){
        Log.d(TAG, "run");
        for(int i = 0; i<100; i++)
        {
            Log.e(TAG, Thread.currentThread().getName() + "i =  " + i);
        }
    }
}

 

启动线程：

 

new MyThread().start();

 

2.创建一个Runnable对象

 

public class MyRunnable implements Runnable{
    private final static String TAG = "My Runnable ===> ";

    @Override
    public void run() {
        // TODO Auto-generated method stub
        Log.d(TAG, "run");
        for(int i = 0; i<1000; i++)
        {
            Log.e(TAG, Thread.currentThread().getName() + "i =  " + i);
        }
    }
}

 

启动线程：

 

// providing a new Thread instance with a Runnable object during its creation.
        new Thread(new MyRunnable()).start();

 

3.通过Handler启动线程

 

public class MainActivity extends Activity {

    private final static String TAG = "UOfly Android Thread ==>";
    private int count = 0;
    private Handler mHandler = new Handler();
    private Runnable mRunnable = new Runnable() {
        public void run() {
            Log.e(TAG, Thread.currentThread().getName() + " " + count);
            count++;
            setTitle("" + count);
            // 每3秒执行一次
            mHandler.postDelayed(mRunnable, 3000);
        }
    };
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        // 通过Handler启动线程
        mHandler.post(mRunnable);
    }

      @Override
         protected void onDestroy() {
             //将线程销毁掉
             mHandler.removeCallbacks(mRunnable);
             super.onDestroy();
         }

}

 http://www.cnblogs.com/u0fly/archive/2011/01/25/1944645.html