package com.example.myhandlertest3;

 import android.os.Bundle;

 import android.os.Handler;

 import android.os.Message;

 import android.support.v7.app.ActionBarActivity;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.widget.Button;

 import android.widget.TextView;

 /**

  * Android Handler

  * @author shaobn

  * @date 2015/9/9

  */

 public class MainActivity extends ActionBarActivity {

     private Button button;

     private TextView tv;

     private Handler handler;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         button = (Button)this.findViewById(R.id.button1);

         handler = new Handler(){

             public void handleMessage(android.os.Message msg) {

                 Bundle bundle = msg.getData();

                 String data = bundle.getString("color");

                 MainActivity.this.button.append(data);

             };

         };

         final Runnable runnable = new Runnable() {

             @Override

             public void run() {

                 // TODO Auto-generated method stub

                 String color = "red";

                 Message message = new Message();

                 Bundle bundle = new Bundle();

                 bundle.putCharSequence("color", color);

                 message.setData(bundle);

                 MainActivity.this.handler.sendMessage(message);

                 try {

                     Thread.sleep(3000);

                 } catch (Exception e) {

                     // TODO: handle exception

                     e.printStackTrace();

                 }

             }

         };

         button.setOnClickListener(new OnClickListener() {

             @Override

             public void onClick(View arg0) {

                 // TODO Auto-generated method stub

                 new Thread(runnable).start();

             }

         });

     }

 }