How to prevent onClick method on transparent portion of a PNG-loaded ImageView

Question

I am currently developing an Android app that displays multiple images (as ImageView\'s) stacked on top of each other. Here is how the layers are currently con

Answer 1

Bitmap.createBitmap(v.getDrawingCache() and imageView.setDrawingCacheEnabled(true) are depreciated so you can do this by the following snippet code:

imageView.setOnTouchListener { v, event ->
            val bmp = convertViewToDrawable(v)
            val color: Int = bmp.getPixel(event.x.toInt(), event.y.toInt())
            if (color == Color.TRANSPARENT)
                return@setOnTouchListener false
            else {
                Toast.makeText(baseContext, "image clicked", Toast.LENGTH_SHORT).show()
                return@setOnTouchListener true
            }
        }

private fun convertViewToDrawable(view: View): Bitmap {
        val b = Bitmap.createBitmap(view.measuredWidth, view.measuredHeight,
            Bitmap.Config.ARGB_8888)
        val c = Canvas(b)
        c.translate((-view.scrollX).toFloat(), (-view.scrollY).toFloat())
        view.draw(c)
        return b
    }