使用handler异步更新UI界面

package mars.com;

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

//使用handler异步更新UI界面
public class Demo_Handler extends Activity {
	private ImageView image;
	private int what = 0;
	private Handler handler = new Handler() {
		public void handleMessage(Message message) {
			switch (message.what) {
			case 0:
				image.setImageResource(R.drawable.run0);
				break;
			case 1:
				image.setImageResource(R.drawable.run1);
				break;
			case 2:
				image.setImageResource(R.drawable.run2);
				break;
			case 3:
				image.setImageResource(R.drawable.run3);
				break;
			case 4:
				image.setImageResource(R.drawable.run4);
				break;
			case 5:
				image.setImageResource(R.drawable.run5);
				break;
			default:
				break;
			}
			super.handleMessage(message);
		}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		image = (ImageView) findViewById(R.id.image);
		thread.start();
	}

	Thread thread = new Thread(new Runnable() {
		public void run() {
			while (true) {
				Message message = handler.obtainMessage();
				message.what = (what++) % 6;
				handler.sendMessage(message);
				try {
					Thread.sleep(2000);
				} catch (Exception e) {
				}
			}
		}
	});
}

main.xml文件我就不贴了，就一个ImageView大家估计都懂