Android的Handler幾種常見的傳值方式

package com.handlerThread;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.HandlerThread;import android.os.Looper;import android.os.Message;public class handlerThread2 extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);//System.out.println("activity線程ID:"+Thread.currentThread().getId());HandlerThread handlerThread = new HandlerThread("handlerThread");handlerThread.start();MyHandler handler = new MyHandler(handlerThread.getLooper());Message msg = handler.obtainMessage();//msg.arg1 = 123;//傳遞整型資料//msg.obj = "asd";傳遞object類型//利用bundle對象來傳值Bundle b = new Bundle();b.putInt("ID", 12);b.putString("name", "thinkpad");msg.setData(b);msg.sendToTarget();}class MyHandler extends Handler {public MyHandler() {super();}public MyHandler(Looper looper) {super(looper);}@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);//int args = msg.arg1;//String s = (String)msg.obj;//擷取bundle對象的值Bundle b = msg.getData();int id = b.getInt("ID");String name = b.getString("name");System.out.println("id is "+id+", name is "+name);//System.out.println("handler線程ID:"+Thread.currentThread().getId());}}}

　　運行結果

　　那麼，bundle具體是個什麼東西呢，我們來看一下官方的解釋