iOS自带分享功能

具体功能百度去吧

1、UIActivityViewController

2、SLComposeViewController 这个，好像加了文字和标题，图片就只能转发一张？

// 添加视频

NSItemProvider*itemProvider = [[NSItemProvider alloc] initWithItem:(NSURL*)obj typeIdentifier:(NSString*)kUTTypeQuickTimeMovie];

NSExtensionItem*extensionItem = [NSExtensionItem new];

extensionItem.attachments = [NSArrayarrayWithObject:itemProvider];[composeVC performSelector:@selector(addExtensionItem:) withObject:extensionItem];