UIActivityItemSource Protocole set complex object
ios6, objective-c, uiactivityviewcontroller
Solution
After spending a significant amount of time trying to figure this one out, it seems it isn't possible to pass it an `NSArray` of items. So I extended `UIActivityViewController` to make it possible.
RDActivityViewController
Problem
I'm using iOS 6 new way to share information : `UIActivityViewController`. To select the shared data depending on the media (facebook, twitter or mail) my view controller implement the `UIActivityItemSource` Protocol as follow : ``` - (IBAction)onShareButton:(UIButton *)sender { UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[self] applicationActivities:nil]; activityViewController.excludedActivityTypes = @[UIActivityTypeMessage, UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypeMessage, UIActivityTypePostToWeibo, UIActivityTypePrint, UIActivityTypeSaveToCameraRoll]; [self presentViewController:activityViewController animated:YES completion:^{}]; } #pragma mark - UIActivityItemSource Protocol - (id)activityViewController:(UIActivityViewController *)activityViewController itemForActivityType:(NSString *)activityType { if ([activityType isEqualToString:UIActivityTypePostToFacebook]) { NSArray *items = @[@"message facebook", [NSURL URLWithString:@"http://www.myUrlFacebook.com"]]; return items; } else if ([activityType isEqualToString:UIActivityTypePostToTwitter]) { NSArray *items = @[@"message twitter", [NSURL URLWithString:@"http://www.myUrlTwitter.com"]]; return items; } else if ([activityType isEqualToString:UIActivityTypeMail]) { NSArray *items = @[@"message mail", [NSURL URLWithString:@"http://www.myUrlMail.com"]]; return items; } NSArray *items = @[@"Not a proper Activity", [NSURL URLWithString:@"http://www.myUrlMail.com"]]; return items; } - (id)activityViewControllerPlaceholderItem:(UIActivityViewController *)activityViewController { return @"PlaceHolder"; } ``` When I'm returning a simple NSString for `activityViewController:itemForActivityType:` the string is well used by my `UIActivityViewController`, but I can't find a way to use an `Array` ! According to Apple Documentation it should be possible : This method returns the actual data object to be acted on by an activity object Apple documentation Does anyone ever use this `UIActivityItemSource` Protocol with Arrays, or is there a use full tutorial to do that ? Note : I also got this error on the console, it may help ... Launch Services: Registering unknown app identifier com.apple.mobilemail failed Launch Services: Unable to find app identifier com.apple.mobilemail