android日常 游戏：跳舞男孩

package com.mz.boy;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ImageView;

public class MainActivity extends Activity {
private ImageView img;
//定义一个线程对象
private Thread thread;
//定义一个handler对象
private Handler handler;
//定义一个线程运行的标志
private boolean isDancing=true;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
img=(ImageView)this.findViewById(R.id.img);
//handler对象实例化的过程，处理消息
handler=new Handler(){

@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
super.handleMessage(msg);
switch (msg.what) {
case 0:
img.setBackgroundResource(R.drawable.boy0);
break;
case 1:
img.setBackgroundResource(R.drawable.boy1);
break;
case 2:
img.setBackgroundResource(R.drawable.boy2);
break;
case 3:
img.setBackgroundResource(R.drawable.boy3);
break;
case 4:
img.setBackgroundResource(R.drawable.boy4);
break;
case 5:
img.setBackgroundResource(R.drawable.boy5);
break;
case 6:
img.setBackgroundResource(R.drawable.boy6);
break;
case 7:
img.setBackgroundResource(R.drawable.boy7);
break;
case 8:
img.setBackgroundResource(R.drawable.boy8);
break;
case 9:
img.setBackgroundResource(R.drawable.boy9);
break;
case 10:
img.setBackgroundResource(R.drawable.boy10);
break;
case 11:
img.setBackgroundResource(R.drawable.boy11);
break;
case 12:
img.setBackgroundResource(R.drawable.boy12);
break;
case 13:
img.setBackgroundResource(R.drawable.boy13);
break;
case 14:
img.setBackgroundResource(R.drawable.boy14);
break;
case 15:
img.setBackgroundResource(R.drawable.boy15);
break;
case 16:
img.setBackgroundResource(R.drawable.boy16);
break;
case 17:
img.setBackgroundResource(R.drawable.boy17);
break;
case 18:
img.setBackgroundResource(R.drawable.boy18);
break;

default:
break;
}
}
};
thread=new MyThread();
thread.start();
}

@Override
protected void onDestroy() {
// TODO Auto-generated method stub
isDancing=false;
super.onDestroy();
}

//子线程的定义
class MyThread extends Thread{

@Override
public void run() {
// TODO Auto-generated method stub
int what=1;
while(isDancing){
handler.sendEmptyMessage((what++)%19);
try {
//每隔多长时间线程运行
thread.sleep(100);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}

}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg"
android:orientation="vertical" >

<ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"

android:layout_gravity="center" />

</LinearLayout>