addWaterMark.java

private Bitmap addWaterMark(Bitmap src, Bitmap waterMark) {
        if (src == null || waterMark == null) {

            return null;
        }


        try {
            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);
            //int watermarkPadding = 30;
            int newWatermarkWidth = w / 5;
            int newWatermarkHeight = (waterMark.getHeight() * newWatermarkWidth) / waterMark.getWidth();
            Bitmap newWatermark = Bitmap.createScaledBitmap(waterMark, newWatermarkWidth, newWatermarkHeight, true);
            canvas.drawBitmap(newWatermark, 0, h - newWatermarkHeight, null);

            // canvas.drawBitmap(waterMark, 0, 0, null);
            return result;

        } catch (Exception ex) {
            return null;
        }
    }