Show .bmp file in ImageView Android 6

Issue

My application receives ByteArray with .bmp file in it from backend. I need to output that bmp file in ImageView. For Android versions 7+ I create Bitmap with BitmapFactory.decodeByteArray() and then do imgView.setImageBitmap() and it works perfectly fine. But for OS versions 5 and 6 BitmapFactory.decodeByteArray() returns null.

I also tried writing bytes to file and creating Bitmap from file or stream - no good. Creating Drawable from the file and using file's Uri for ImageView.setImageUri() didn't solve the issue either.

Picasso and Glide libraries also don't work.

I would think that Android 5 and 6 can't work with bmp at all, but that just doesn't sound right. Also when I put test image (the same as the one that I receive from server) to res/mipmap folder I am able to output it to my ImageView.

So my question is what is the solution to that? How do I output .bmp image from ByteArray or locally saved file to ImageView on Android 5 and 6?

Solution

So I solved the issue. There was a bug in my bitmap receiving code, so the final ByteArray didn't contain data for the last image column. Apparently, Android 7+ decoding mechanism ignores this issue and just decodes as much data as possible. But the previous versions of the OS strictly require enough data for full image.

Answered By - 0awawa0