android知识点积累

添加监听:
final ImageView image = new ImageView(this);
image.setOnClickListener(new OnClickListener() {

   public void onClick(View v) {
    if(currentImg>=5)
    {
     currentImg = -1;
    }
    image.setImageResource(images[++currentImg]);

   }
  });
线程,周期线变换图片:
int currentImg = 0;

final Handler handler = new Handler()
        {
        @Override
        public void handleMessage(Message msg) {
          super.handleMessage(msg);
          if(msg.what == 1111111)
          {
           //变换图片
           image.setImageResource(images[currentImg]);
          }
        }
        };
        //定义一个线程周期性的变换图片
new Timer().schedule(new TimerTask() {
   @Override
   public void run() {
    //发送一条消息通知系统改变图片
    Message m = new Message();
    //给该消息定义一个标识
    m.what = 1111111;
    if(currentImg >= images.length-1)
    {
     currentImg = -1;
    }
    currentImg++;
    handler.sendMessage(m);
   }
  }, 0, 1000);
    }

更多相关文章

随机推荐