CODEWITHSUNDEEP
objective-cevent-handlingcocos2d-iphoneios6
Emre Akman
Emre Akman

Reputation: 1213

UIActivityViewControllerCompletionHandler How to?

I am trying to use the UIActivityViewControllerCompletionHandler , but i dont quite get how..

I want to detect when the user finishes or dismisses this view controller (UIActivityViewController).

Anyone knows how?

Upvotes: 26

Views: 13730

Answers (6)

Rohit Singh
Rohit Singh

Reputation: 18222

You can use completionWithItemsHandler

Here is the code in Objective-C. Please translate it into Swift accordingly.

UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:@[text] applicationActivities:nil];

activityVC.completionWithItemsHandler  = ^(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *error){
          
   if (completed) {
             
        NSLog(@"Shared by activity %@", activityType);

    } else {
        NSLog(@"ShareSheet was closed");
    }
   
    if (error) {
        NSLog(@"An Error Occured: %@, %@", error.localizedDescription, error.localizedFailureReason);
             
    }
};

Upvotes: 0

Bill Patterson
Bill Patterson

Reputation: 2558

Swift 5: 

func showShareOf(url: URL, title: String) {
    let shareItems: [Any] = ["\(title)\n", url]
    let activityVC = UIActivityViewController(activityItems: shareItems, applicationActivities: nil)
    activityVC.completionWithItemsHandler = doneSharingHandler
    self.present(activityVC, animated: true, completion: nil)
}

@objc func doneSharingHandler(activityType: UIActivity.ActivityType?, completed: Bool, _ returnedItems: [Any]?, error: Error?) {
    if (!completed) { return }
    // If here, log which activity occurred
    print("Shared activity: \(activityType)")
}

Upvotes: 1

Chanpiseth
Chanpiseth

Reputation: 1

For Swift, this one works for me...

    // Configure UIActivityViewController
    let activityViewController = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
    activityViewController.excludedActivityTypes = [UIActivityTypeAirDrop,
        UIActivityTypeAddToReadingList,
        UIActivityTypeAssignToContact,
        UIActivityTypePrint,
        UIActivityTypeCopyToPasteboard]

    // Show UIActivityViewController
    presentViewController(activityViewController, animated: true, completion: nil)

    // Define completion handler
    activityViewController.completionWithItemsHandler = doneSharingHandler

...

func doneSharingHandler(activityType: String!, completed: Bool, returnedItems: [AnyObject]!, error: NSError!) {

    // Return if cancelled
    if (!completed) {
        return
    }
    // If here, log which activity occurred
    println("Shared video activity: \(activityType)")
}

Upvotes: -1

Anton Gaenko
Anton Gaenko

Reputation: 9025

With iOS 8 completionHandler is deprecated, so you will want to provide alternative completionWithItemsHandler. It also allows to handle if extension modified data you set (say Photo extension). See Documentation

    UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[text, URL, image] applicationActivities:nil];
    activityViewController.excludedActivityTypes = @[UIActivityTypePrint, UIActivityTypeCopyToPasteboard, UIActivityTypeAssignToContact, UIActivityTypeAirDrop, UIActivityTypeAddToReadingList];

    // check if new API supported
    if ([activityViewController respondsToSelector:@selector(completionWithItemsHandler)]) {
        activityViewController.completionWithItemsHandler = ^(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *activityError) {
            // When completed flag is YES, user performed specific activity
        };
    } else {
        activityViewController.completionHandler = ^(NSString *activityType, BOOL completed) {
            // When completed flag is YES, user performed specific activity
        };
    }

Upvotes: 25

gchbib
gchbib

Reputation: 1955

Here's how you show a sharing dialog and set its completion handler

NSArray *imageArray = [NSArray arrayWithObject:shareImage];

UIActivityViewController *sharing = [[UIActivityViewController alloc] initWithActivityItems:imageArray applicationActivities:nil];

[sharing setCompletionHandler:^(NSString *activityType, BOOL completed) {
    NSLog(@"completed dialog - activity: %@ - finished flag: %d", activityType, completed);
}];

[self presentViewController:sharing animated:YES completion:nil];

Upvotes: 70

sobri
sobri

Reputation: 1685

typedef void (^UIActivityViewControllerCompletionHandler)
    (NSString *activityType, BOOL completed);

The second parameter of the completion handler tells you whether the user dismissed the controller. If they dismissed the controller, completed will be set to NO.

There's more details in the completion handler's documentation.

Upvotes: 19

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