Resolve inconsistency between Bitmap.com Press generated image and original image

For images with transparent backgrounds, use the following code to store the Bitmap locally

        try (FileOutputStream fout = new FileOutputStream(dest)) {
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fout);
        } catch (Exception e) { }
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Problems like the following may exist:

This is probably because bitmaps have pre-multiply transparency on by default, which can be solved by using the following code

bmp.setPremultiplied(false);
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Reference: www.jianshu.com/p/52e6fec1b…

www.shawnhargreaves.com/blog/premul…