activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:text="点击" /></RelativeLayout>
MainActivity
package com.example.android_handler;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.R.integer;import android.app.Activity;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity { private Button button; private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { // 取得消息数据 int what = msg.what; int arg1 = msg.arg1; int arg2 = msg.arg2; Object object = msg.obj; Bundle bundle = msg.getData(); String[] arr = bundle.getStringArray("haha"); String str = new String(); for (String temp : arr) { str += temp; } // 显示消息 System.out.println("--what-->" + what); System.out.println("--arg1-->" + arg1); System.out.println("--arg2-->" + arg2); System.out.println("--object-->" + object); System.out.println("--arr-->" + str); }; }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) this.findViewById(R.id.button1); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub new Thread(new MyThread()).start();// 开启线程 } }); } public class MyThread implements Runnable { @Override public void run() { // TODO Auto-generated method stub Message message = Message.obtain(handler, 0, 1, 2, "dashu"); Bundle bundle = new Bundle(); bundle.putStringArray("haha", new String[] { "dashu", "meizi" }); message.setData(bundle); message.sendToTarget();// 发送消息 } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }}
