iOS保存App中的照片到系统相册或自建相册的方法

    {
        if (group)
        {
            [groups addObject:group];
        }

 

        else
        {
            BOOL haveHDRGroup = NO;

            for (ALAssetsGroup *gp in groups)
            {
                NSString *name =[gp valueForProperty:ALAssetsGroupPropertyName];

                if ([name isEqualToString:@"iOSDevTip"])
                {
                    haveHDRGroup = YES;
                }
            }

            if (!haveHDRGroup)
            {
                //do add a group named "XXXX"
                [assetsLibrary addAssetsGroupAlbumWithName:@"iOSDevTip"
                                               resultBlock:^(ALAssetsGroup *group)
                 {
                     [groups addObject:group];

                 }
                                              failureBlock:nil];