布局文件就只放了一个简单的ImageView,就不展示了。
下面是Activity
1 package com.example.administrator.handlerthreadmessagedemo; 2 3 import android.app.Activity; 4 import android.os.Bundle; 5 import android.os.Handler; 6 import android.os.Message; 7 import android.widget.ImageView; 8 import android.widget.TextView; 9 import java.util.Timer;10 11 12 public class MainActivity extends Activity {13 14 private int images[] = new int[]{R.drawable.image1,R.drawable.image2,R.drawable.image3}; //存放图片15 16 private ImageView imageView;17 private int index = 0; //计算18 private TextView textView;19 private Timer timer = new Timer();20 private Timertask timertask;21 22 23 24 @Override25 protected void onCreate(Bundle savedInstanceState) {26 27 super.onCreate(savedInstanceState);28 setContentView(R.layout.activity_main);29 imageView = (ImageView) findViewById(R.id.imageView);30 textView = (TextView) findViewById(R.id.title);31 timertask = new Timertask(); //放回到Timer中32 timer.schedule(timertask,0,1000); //使用Timer 每隔1秒发送一次空消息33 }34 35 private Handler mhandler = new Handler(){36 @Override37 public void handleMessage(Message msg) {38 super.handleMessage(msg);39 if(msg.what == 0x111){40 index++;41 imageView.setBackgroundResource(images[index % 3]);42 }43 }44 };45 46 class Timertask extends java.util.TimerTask{47 48 @Override49 public void run() {50 mhandler.sendEmptyMessage(0x111);51 }52 }53 54 }
原标题:使用Handler和Timer+Timertask实现简单的图片轮播
关键词:图片