Utility class to save and load bitmap to and from a bundle. Use it for onSaveInstanceState/onCreate lifecycle

BitmapRetention.java

public static class BitmapRetention {
        public static Bundle safeSave (@NonNull final Bitmap bitmap) {
            try {
                return save(bitmap);
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        public static Bundle save (@NonNull final Bitmap bitmap) throws IOException {
            if (bitmap.isRecycled()) {
                return null;
            }

            final int total = bitmap.getByteCount();
            if (total == 0) {
                return null;
            }

            ByteBuffer byteBuffer = ByteBuffer.allocateDirect(total);
            bitmap.copyPixelsToBuffer(byteBuffer);
            byteBuffer.flip();

            File file = File.createTempFile("savedBitmap", ".bmp");

            RandomAccessFile accessFile = new RandomAccessFile(file, "rw");
            final FileChannel fileChannel = accessFile.getChannel();
            fileChannel.write(byteBuffer);
            fileChannel.close();
            accessFile.close();

            Bundle bundle = new Bundle();
            bundle.putString("src.uri", file.getAbsolutePath());
            bundle.putString("src.config", bitmap.getConfig().name());
            bundle.putInt("src.width", bitmap.getWidth());
            bundle.putInt("src.height", bitmap.getHeight());
            return bundle;
        }

        public static Bitmap safeLoad (@Nullable Bundle bundle) {
            if (null == bundle) {
                return null;
            }
            try {
                return load(bundle);
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        public static Bitmap load (@NonNull final Bundle bundle) throws IOException {
            final int width = bundle.getInt("src.width", 0);
            final int height = bundle.getInt("src.height", 0);
            final String config = bundle.getString("src.config", null);
            final String uri = bundle.getString("src.uri", null);

            if (width < 1 || height < 1 || TextUtils.isEmpty(config) || TextUtils.isEmpty(uri)) {
                Log.w(TAG, "width=" + width + ", height=" + height + ", config=" + config + ", uri=" + uri);
                return null;
            }

            File file = new File(uri);
            RandomAccessFile accessFile = new RandomAccessFile(file, "r");
            FileChannel channel = accessFile.getChannel();
            MappedByteBuffer buffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
            buffer.load();

            try {
                Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.valueOf(config));
                bitmap.copyPixelsFromBuffer(buffer);
                return bitmap;
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            } finally {
                channel.close();
                accessFile.close();
                file.delete();
            }
        }
    }