ImageUtils.java 文件源码

/**
 * 添加图片水印
 *
 * @param src 源图片
 * @param watermark 图片水印
 * @param x 起始坐标x
 * @param y 起始坐标y
 * @param alpha 透明度
 * @param recycle 是否回收
 * @return 带有图片水印的图片
 */
public static Bitmap addImageWatermark(Bitmap src, Bitmap watermark, int x, int y, int alpha, boolean recycle) {
    if (isEmptyBitmap(src)) {
        return null;
    }
    Bitmap ret = src.copy(src.getConfig(), true);
    if (!isEmptyBitmap(watermark)) {
        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        Canvas canvas = new Canvas(ret);
        paint.setAlpha(alpha);
        canvas.drawBitmap(watermark, x, y, paint);
    }
    if (recycle && !src.isRecycled()) {
        src.recycle();
    }
    return ret;
}