How might I add a watermark effect to an image in Android?

Question

I have an image with frames and I need to add a watermark effect. How might I do this?

Answer 1

For others reference, if you want to add the logo of your application (which is in your drawable folder(s)) on top of image use following method:

private Bitmap addWaterMark(Bitmap src) {
        int w = src.getWidth();
        int h = src.getHeight();
        Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());
        Canvas canvas = new Canvas(result);
        canvas.drawBitmap(src, 0, 0, null);

        Bitmap waterMark = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.logo);
        canvas.drawBitmap(waterMark, 0, 0, null);

        return result;
    }