Where the heck is Bitmap getByteCount()?

Question

I know the Android platform is a huge mess, over complicated and over-engineered, but seriously to get the size of a bitmap, is it really necessary to do all those conversio

Answer 1

I tried all of the above methods and they were close, but not quite right (for my situation at least).

I was using bitmap.getByteCount(); inside of the sizeOf() method when creating a new LruCache:

mMemoryCache = new LruCache(cacheSize) {
    @Override
    protected int sizeOf(String key, Bitmap bitmap) {
        return bitmap.getByteCount();
    }
};  

I then tried the suggested:

return bitmap.getRowBytes() * bitmap.getHeight();

This was great, but I noticed that the returned values were different and when I used the suggestion above, it would not even make a cache on my device. I tested the return values on a Nexus One running api 3.2 and a Galaxy Nexus running 4.2:

bitmap.getByteCount(); returned-> 15  
bitmap.getRowBytes() * bitmap.getHeight(); returned-> 15400

So to solve my issue, I simply did this:

return (bitmap.getRowBytes() * bitmap.getHeight()) / 1000; 

instead of:

return bitmap.getByteCount();  

May not be the same situation you were in, but this worked for me.