How can I check if a Bitmap
object is completely blank, i.e. all its pixels are transparent, without a x-y loop on every pixel?
You can check your Bitmap instance (in the example myBitmap
) against an empty one with:
Bitmap emptyBitmap = Bitmap.createBitmap(myBitmap.getWidth(), myBitmap.getHeight(), myBitmap.getConfig());
if (myBitmap.sameAs(emptyBitmap)) {
// myBitmap is empty/blank
}