SDPhotoBrowser 非常简单易用的图片浏览

        UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
        [imageView addGestureRecognizer:singleTap];
        UIView *singleTapView = [singleTap view];
        singleTapView.tag = i;

        [_picPathStringsArray addObject:url];

- (void)handleSingleTap:(UIGestureRecognizer *)gestureRecognizer {
    debugMethod();
    NSLog(@"%d",[gestureRecognizer view].tag);
    
    SDPhotoBrowser *browser = [[SDPhotoBrowser alloc] init];
    browser.currentImageIndex = [gestureRecognizer view].tag;
    browser.sourceImagesContainerView = _scrollView;
    browser.imageCount = self.picPathStringsArray.count;
    browser.delegate = self;
    [browser show];
}

#pragma mark - SDPhotoBrowserDelegate
- (NSURL *)photoBrowser:(SDPhotoBrowser *)browser highQualityImageURLForIndex:(NSInteger)index
{
    NSString *imageName = self.picPathStringsArray[index];
    NSURL *url = [NSURL URLWithString:imageName];
    return url;
}

- (UIImage *)photoBrowser:(SDPhotoBrowser *)browser placeholderImageForIndex:(NSInteger)index
{
    UIImageView *imageView = _temp[index];
    return imageView.image;
}