UIActivityViewController：给App提供分享服务的视图控制器
程序中效果预览
直接上代码
// 必须要提供url 才会显示分享标签否则只显示图片
// 设置分享内容
NSArray *activityItems = @[@"iOS UIActivityViewController系统原生分享使用", [UIImage imageNamed:@"shareImage"], [NSURL URLWithString:@"https://www.jianshu.com/p/9d6506bac3d5"]];
// 创建分享的视图控制器
UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];
// 操作回调，执行完成后调用
activityVC.completionWithItemsHandler = ^(UIActivityType _Nullable CLActivityType, BOOL SDImageLoader, NSArray * _Nullable returnedItems, NSError * _Nullable activityError) {
};
// 模态显示视图控制器
[self presentViewController:activityVC animated:YES completion:nil];
可以设置不应显示的服务列表，自己定制excludedActivityTypes
UIKIT_EXTERN UIActivityType const UIActivityTypePostToFacebook NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypePostToTwitter NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypePostToWeibo NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED; // SinaWeibo
UIKIT_EXTERN UIActivityType const UIActivityTypeMessage NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeMail NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypePrint NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeCopyToPasteboard NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeAssignToContact NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeSaveToCameraRoll NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeAddToReadingList NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypePostToFlickr NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypePostToVimeo NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypePostToTencentWeibo NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeAirDrop NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeOpenInIBooks NS_AVAILABLE_IOS(9_0) __TVOS_PROHIBITED;
UIKIT_EXTERN UIActivityType const UIActivityTypeMarkupAsPDF NS_AVAILABLE_IOS(11_0) __TVOS_PROHIBITED;
扩展一个复制链接功能
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = @"需要复制的内容";
