Loading a resource to a mutable bitmap

Question

I am loading a bitmap from a resource like so:

 Bitmap mBackground = BitmapFactory.decodeResource(res,R.drawable.image);

What I want to do

Answer 1

Instad of yours:

Bitmap mBackground = BitmapFactory.decodeResource(res,R.drawable.image);

Use:

BitmapFactory.Options options = new BitmapFactory.Options();
options.inMutable = true;

Bitmap mBackground = BitmapFactory.decodeResource(res,R.drawable.image, options);

Answer 2

You'd better use RapidDecoder.

import rapid.decoder.BitmapDecoder;

Bitmap mBackground = BitmapDecoder.from(res, R.drawable.image)
        .mutable().decode();

Works for API level 8.

Answer 3

in case you need to handle all API levels, check out this post:

https://stackoverflow.com/a/16314940/878126

Answer 4

There are several ways to create a copy of it. This thread might help you: http://www.anddev.org/how_to_modify_the_image_file-t513.html

Answer 5

Use decodeResource(Resources res, int id, BitmapFactory.Options opts) and specify inMutable in the options.

http://developer.android.com/reference/android/graphics/BitmapFactory.html