How to check if a Bitmap is empty (blank) on Android

android, android-bitmap, bitmap

Solution

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
}

Problem

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?

Original source