java - Decode a part of Bitmap from file in Android

Question

I have a file with a very large image: for example 9000x9000.

I can't load the Bitmap in memory because the heap size. But I only need to display a small part of this bitmap for example the rect width=100-200 and height =200-400 (resulting size of the sub-bitmap =100x200)

How can I retrieve this bitmap from the file?

Note: I dont want to lose quality in the 100x200 image

Thanks

Answer 1

is it possible that there is a solution for this?

for example , BitmapRegionDecoder .

It should work for API10 and above...

Usage:

BitmapRegionDecoder.newInstance(...).decodeRegion(...)