如何识别Android中触摸的图像区域(而不仅仅是坐标)？

    android:id="@+id/image"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/my_image" />

ImageView imageView = findViewById(R.id.image);
imageView.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            float x = event.getX();
            float y = event.getY();
            Drawable drawable = imageView.getDrawable();
            if (drawable != null) {
                Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
                int pixel = bitmap.getPixel((int) x, (int) y);
                if (pixel != Color.TRANSPARENT) {
                    // 触摸点在图像区域内
                    // 执行相应的操作
                    return true;
                }
            }
        }
        return false;
    }
});