ios - 找出在 UIActivityViewController 中单击了哪个图标

Question

使用“社交”框架，当呈现显示所有常用社交媒体图标的模态 UIActivityViewController 时，有没有办法准确找出用户点击了哪个图标？意思是，如果他们选择 Twitter、Facebook、邮件、消息等？

我期待可能会在文档中看到此类的一些委托方法，但我什么也没看到。

有人有什么想法吗？

Answer 1

UIActivityViewController有财产completionHandler。_ 实现此处理程序以得到通知。

UIActivityViewController *avc = ...;
avc.completionHandler = ^(NSString *activityType, BOOL completed) {
    if (completed) {
        NSLog(@"The selected activity was %@", activityType);
    }
};

Answer 2

斯威夫特 3

Swift 3 中的 typealiasUIActivityViewControllerCompletionWithItemsHandler更改为

public typealias UIActivityViewControllerCompletionWithItemsHandler = (UIActivityType?, Bool, [Any]?, Error?) -> Swift.Void

您可以像这样使用 completionWithItemsHandler。

activityViewController.completionWithItemsHandler = {(activityType: UIActivityType?, completed: Bool, returnedItems:[Any]?, error: Error?) in
    //Do whatever you want
}

Answer 3

completionHandler已弃用。使用completionWithItemsHandler.

activityController.completionWithItemsHandler = ^(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *activityError) {
    NSLog(@"completionWithItemsHandler, activityType: %@, completed: %d, returnedItems: %@, activityError: %@", activityType, completed, returnedItems, activityError);
};

Answer 4

基于这个 SO 答案：https ://stackoverflow.com/a/34581940/2177085

这还包括检查用户是否通过 WhatsApp 或 Gmail 共享。您可以打印 activityType 以添加其他类型。

let activityViewController = UIActivityViewController(activityItems: [finalMsg as NSString], applicationActivities: nil)
self.presentViewController(activityViewController, animated: true, completion: nil)

activityViewController.completionWithItemsHandler = {(activityType, completed:Bool, returnedItems:[AnyObject]?, error: NSError?) in

// Return if cancelled
if (!completed) {
    print("user clicked cancel")
    return
}

if activityType == UIActivityTypeMail {
    print("share throgh mail")
}
else if activityType == UIActivityTypeMessage {
    print("share trhought Message IOS")
}
else if activityType == UIActivityTypePostToTwitter {
    print("posted to twitter")
}
else if activityType == UIActivityTypePostToFacebook {
    print("posted to facebook")
}
else if activityType == UIActivityTypeCopyToPasteboard {
    print("copied to clipboard")
}
else if activityType! == "net.whatsapp.WhatsApp.ShareExtension" {
    print("activity type is whatsapp")
}
else if activityType! == "com.google.Gmail.ShareExtension" {
    print("activity type is Gmail")
}
else {
    // You can add this activity type after getting the value from console for other apps.
    print("activity type is: \(activityType)")
}
}

Answer 5

以下代码段适用于我的情况：

[activityController setCompletionHandler:^(NSString *act, BOOL done)
{

   NSLog(@"act type %@",act);
   NSString *ServiceMsg = nil;
   if ( [act isEqualToString:UIActivityTypeMail] )
     ServiceMsg = @"Mail sent";

   if ( [act isEqualToString:UIActivityTypePostToTwitter] )
     ServiceMsg = @"Post on twitter, ok!";

   if ( [act isEqualToString:UIActivityTypePostToFacebook] ) 
     ServiceMsg = @"Post on facebook, ok!";

   if ( done )
   {
      UIAlertView *Alert = [[UIAlertView alloc] initWithTitle:ServiceMsg message:@"" delegate:nil cancelButtonTitle:@"ok" otherButtonTitles:nil];
      [Alert show];
      [Alert release];
   }
   else
   {
      // didn't succeed. 
   }
}];