当按下图像时，图像应该缩小，反之亦然，当按回时，图像应该回到原来的位置。android atudio中

<ImageView
    android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/image" />

ImageView imageView = findViewById(R.id.imageView);
imageView.setOnTouchListener(new View.OnTouchListener() {
    private float startX, startY;
    private float startScale;

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                startX = event.getX();
                startY = event.getY();
                startScale = imageView.getScaleX();
                break;
            case MotionEvent.ACTION_MOVE:
                float currentX = event.getX();
                float currentY = event.getY();
                float dx = currentX - startX;
                float dy = currentY - startY;
                float scale = startScale + (dy / imageView.getHeight());
                imageView.setScaleX(scale);
                imageView.setScaleY(scale);
                break;
            case MotionEvent.ACTION_UP:
                imageView.setScaleX(1.0f);
                imageView.setScaleY(1.0f);
                break;
        }
        return true;
    }
});