使用java.util.Timer来周期性的执行制定的任务

 1 public class HandlerTest extends Activity {
 2     int[] images = new int[] {
 3             R.drawable.baiyang, R.drawable.jinniu, R.drawable.shuangyu
 4     };
 5 
 6     int currentImageID = 0;
 7 
 8     @Override
 9     protected void onCreate(Bundle savedInstanceState) {
10 
11         super.onCreate(savedInstanceState);
12 
13         setContentView(R.layout.imageview);
14         final ImageView imageView = (ImageView) findViewById(R.id.imageViewtest);
15 
16         final Handler myHandler = new Handler() {
17 
18             @Override
19             public void handleMessage(Message msg) {
20                 if (msg.what == 0x123) {
21                     imageView.setBackgroundResource(images[currentImageID++ % images.length]);
22                 }
23             }
24 
25         };
26 
27         new Timer().schedule(new TimerTask() {
28 
29             @Override
30             public void run() {
31                 myHandler.sendEmptyMessage(0x123);
32 
33             }
34         }, 0, 1000);
35 
36     }
37 
38 }