android - 在imageview中设置图像一段时间

Question

我有一个具有图像 1 和一个按钮的图像视图。我需要按下按钮将图像源更改为 image2 1 秒，然后设置 image1 。我是java和android的初学者，有人可以帮忙吗？

Answer 1

你可以使用Handler这个：

Button button1 = (Button) findViewById(R.id.myButtonId);

ImageView imageView = (ImageView) findViewById(R.id.myImageViewId);
imageView.setImageDrawable(getResources().getDrawable(R.drawable.image1)); // set image1

button1.setOnClickListener(new OnClickListener() {
    @Override
public void onClick(View v) {
    imageView.setImageDrawable(getResources().getDrawable(R.drawable.image2)); // set image2
    new Handler().postDelayed(new Runnable() {
        public void run() {
        imageView.setImageDrawable(getResources().getDrawable(R.drawable.image1)); // switch back to image1
    }, 1000L);    // 1 second delay | change this value to shorten/lengthen delay
    }
});

Answer 2

试试这个代码。

private Handler handler = new Handler();
private Runnable runable = new Runnable() {

    @Override
    public void run() {
        // set thr image to image1
    }
};

 private void onButtonClickHandler() {
    // set the image to image2

    //remove
    handler.removeCallbacks(runable);
    // post a delay
    handler.postDelayed(runable, 1000);
 }

或者：

private void onButtonClickHandler() {
    // set the image to image2

    //cancel
    timer.cancel();
    timer.schedule(new TimerTask() {

        @Override
        public void run() {
            // TODO Auto-generated method stub

        }
    }, 1000);
}


private Timer timer = new Timer();

Answer 3

imageView.setImage(img2);
Thread.sleep(1000);
imageView.setImage(img1);