Android的Handler几种常见的传值方式
public class handlerThread2 extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //System.out.println("activity线程ID:"+Thread.currentThread().getId()); HandlerThread handlerThread = new HandlerThread("handlerThread"); handlerThread.start(); MyHandler handler = new MyHandler(handlerThread.getLooper()); Message msg = handler.obtainMessage(); //msg.arg1 = 123;//传递整型数据 //msg.obj = "asd";传递object类型 //利用bundle对象来传值 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); } @Override public void handleMessage(Message msg) { super.handleMessage(msg); //int args = msg.arg1; //String s = (String)msg.obj; //获取bundle对象的值 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线程ID:"+Thread.currentThread().getId()); } } } 运行结果 那么,bundle具体是个什么东西呢,我们来看一下官方的解释