学步园

    private Bitmap mergeBitmap(Bitmap firstBitmap, Bitmap secondBitmap) {
        Bitmap bitmap = Bitmap.createBitmap(firstBitmap.getWidth(), firstBitmap.getHeight(),
                firstBitmap.getConfig());
        Canvas canvas = new Canvas(bitmap);
        canvas.drawBitmap(firstBitmap, new Matrix(), null);
        canvas.drawBitmap(secondBitmap, 0, 0, null);
        return bitmap;
    }