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 {

	@Override
	protected 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;//傳遞整型數據
		//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);
		}

		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);
			//int args = msg.arg1;
			//String s = (String)msg.obj;
			
			//獲取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