title: BitmapFactory decode PNG bytes to raw data
body: <p>I'm downloading image data over the network and obviously it's compressed. Inside the app I need the data to be 100% accurate to the original. So for example for a 720x720 image I need a 518400 length int array or 2073600 length byte array where the values have not been modified from the original. Since PNG compression is lossless this should be possible.I noticed that BitmapFactory applies some psychovisual effects when decoding that aren't noticeable when looking at the image, however change the byte values ever so slightly (I'm assuming this is for speed and/or better visual look on screen).</p>
  
  <p>What I'm currently doing is using BitmapFactory.decode and then iterating over every pixel to create a new array from approximation and creating a new bitmap with Bitmap.create This is possible because for now the images are binary and in the original images each pixel is either (r, g, b, 255) or (0, 0, 0, 0). I can find the most prevalent colour and set all pixels with alpha values over some threshold to this RGB value. The solution is quite slow though and seems needlessly complicated.</p>
  
  <p>So my question is - is there any combination of options flags for BitmapFactory.decode that returns a 100% true to the original Bitmap or do I have to create a PNG decoder myself to achieve this?</p>