Android handler several common ways of passing values

 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.O
		Ncreate (savedinstancestate);
		
		Setcontentview (R.layout.main);
		SYSTEM.OUT.PRINTLN ("Activity thread ID:" +thread.currentthread (). GetId ());
		Handlerthread handlerthread = new Handlerthread ("Handlerthread");
		Handlerthread.start ();
		MyHandler handler = new MyHandler (Handlerthread.getlooper ());
		
		Message msg = Handler.obtainmessage ();
		MSG.ARG1 = 123;//Pass integer data//msg.obj = "ASD"; Pass object type///Use Bundle object to pass value 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 (msg) {super.handlemessage);
			int args = MSG.ARG1;
			
			string s = (string) msg.obj;
			Gets the value of the Bundle object Bundle b = Msg.getdata ();
			int id = b.getint ("id");
			String name = b.getstring ("name");
			
			SYSTEM.OUT.PRINTLN ("ID is" +id+ ", the name is" +name);
		System.out.println ("Handler thread ID:" +thread.currentthread (). GetId ()); }
		
	}

}

Run results

So, what exactly is bundle? Let's take a look at the official explanation.