获取24位PNG像素值

Question

I'm decoding a 24 bit single channel grayscale PNG with BitmapFactory ( Config.ARGB_8888 ). Now I'v tried several ways (described here) to get the value of a pixel, but none returned the value I'm expecting.

This one should give me the value for a 16 bit PNG, but doesn't seem to work in the 24 bit case:

int val = bitmap.getPixel(0,0)&0x0000ffff;

What's the right way to adress the value of a 24 bit PNG?

Answer 1

int val = bitmap.getPixel(0,0)&0x00ffffff;