Android线程间通信的Message机制

核心提示：ownLooperThread = new OwnLooperThread();ownLooperThread.start();break;case 104://other thread通过Post Runnable方式发送消息给主线程postRunnable = true;noLooerThread = new No

ownLooperThread = new OwnLooperThread();

ownLooperThread.start();

break;

case 104:

//other thread通过Post Runnable方式发送消息给主线程

postRunnable = true;

noLooerThread = new NoLooperThread();

noLooerThread.start();

break;

case 105:

//主线程发送消息给other thread

if(null!=mOtherThreadHandler){

tv.setText("please look at the error level log for other thread received message from main thread");

String msgObj = "message from mainThread";

Message mainThreadMsg = mOtherThreadHandler.obtainMessage(1, 1, 1, msgObj);

mOtherThreadHandler.sendMessage(mainThreadMsg);

}

break;

case 106:

finish();

break;

}

}

class EventHandler extends Handler

{

public EventHandler(Looper looper) {

super(looper);

}

public EventHandler() {

super();

}

public void handleMessage(Message msg) {

//可以根据msg.what执行不同的处理，这里没有这么做

switch(msg.what){

case 1:

tv.setText((String)msg.obj);

break;

case 2:

tv.setText((String)msg.obj);

noLooerThread.stop();

break;

case 3:

//不能在非主线程的线程里面更新UI，所以这里通过Log打印收到的消息

Log.e(sTag, (String)msg.obj);

ownLooperThread.stop();

break;

default:

//不能在非主线程的线程里面更新UI，所以这里通过Log打印收到的消息

Log.e(sTag, (String)msg.obj);

break;

}

}

}

//NoLooperThread

class NoLooperThread extends Thread{

private EventHandler mNoLooperThreadHandler;

public void run() {