BitmapTypeAdapter

public class BitmapTypeAdapter implements JsonSerializer<Bitmap>, JsonDeserializer<Bitmap> {


    @Override
    public Bitmap deserialize(JsonElement jsonElement, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {

        byte[] decodedString = Base64.decode(jsonElement.getAsString(), Base64.NO_WRAP);
        return BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
    }

    @Override
    public JsonElement serialize(Bitmap bitmap, Type type, JsonSerializationContext jsonSerializationContext) {
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        byte[] byteArray = stream.toByteArray();
        return new JsonPrimitive(Base64.encodeToString(byteArray, Base64.NO_WRAP));
    }


}