FWImagePreviewPlugin

Objective-C

- (void)viewController:(nonnull UIViewController *)viewController
      showImagePreview:(nonnull NSArray *)imageURLs
            imageInfos:(nullable NSArray *)imageInfos
          currentIndex:(NSInteger)currentIndex
            sourceView:(nullable id _Nullable (^)(NSInteger))sourceView
      placeholderImage:
          (nullable UIImage *_Nullable (^)(NSInteger))placeholderImage
           renderBlock:(nullable void (^)(__kindof UIView *_Nonnull __strong,
                                          NSInteger))renderBlock
           customBlock:(nullable void (^)(id _Nonnull __strong))customBlock;