IOS Share Extension NSMutableArray addObject Unrecognized selector sent to instance

Question

After clicking post to the share dialog, the Host App(e.g. Safari) hangs up if arrSites variable is currently not empty. I can only store 1 object inside my arrSites variable. How can I addObject to my NSMutableArray variable?

Below is my implemented code and it generates an error in [arrSites addObject:dictSite] line.

- (void)didSelectPost
{
inputItem = self.extensionContext.inputItems.firstObject;

NSItemProvider *urlItemProvider = [[inputItem.userInfo valueForKey:NSExtensionItemAttachmentsKey] objectAtIndex:0];

if ([urlItemProvider hasItemConformingToTypeIdentifier:(__bridge NSString *)kUTTypeURL])
{
    NSLog(@"++++++++++ Attachment is a URL");
    [urlItemProvider loadItemForTypeIdentifier:(__bridge NSString *)kUTTypeURL options:nil completionHandler:^(NSURL *url, NSError *error)
    {
         if (error)
         {
             NSLog(@"Error occured");
         }
         else
         {
             NSMutableArray *arrSites;
             if ([sharedUserDefaults valueForKey:@"SharedExtension"]){
                 arrSites = [sharedUserDefaults objectForKey:@"SharedExtension"];
             }else{
                 arrSites = [[NSMutableArray alloc] init];
             }

             NSDictionary *dictSite = [NSDictionary dictionaryWithObjectsAndKeys:self.contentText, @"Text", url.absoluteString, @"URL",nil];

             [arrSites addObject:dictSite];
             [sharedUserDefaults setObject:arrSites forKey:@"SharedExtension"];
             [sharedUserDefaults synchronize];

             UIAlertController * alert=   [UIAlertController
                                           alertControllerWithTitle:@"Success"
                                           message:@"V7 Posted Successfully."
                                           preferredStyle:UIAlertControllerStyleAlert];
             UIAlertAction* ok = [UIAlertAction
                                  actionWithTitle:@"OK"
                                  style:UIAlertActionStyleDefault
                                  handler:^(UIAlertAction * action)
                                  {
                                      [UIView animateWithDuration:0.20 animations:^
                                       {
                                           self.view.transform = CGAffineTransformMakeTranslation(0, self.view.frame.size.height);
                                       }
                                                       completion:^(BOOL finished)
                                       {
                                           [self.extensionContext completeRequestReturningItems:nil completionHandler:nil];
                                       }];
                                  }];

             [alert addAction:ok];
             [self presentViewController:alert animated:YES completion:nil];
         }
     }];
}
}

score 0 · Accepted Answer · edited Feb 27 '17 at 14:01

0

Without memory allocation you can't add the object to array, use like

// allocate the memory of array in before 
NSMutableArray *arrSites = [[NSMutableArray alloc] init];
if ([sharedUserDefaults valueForKey:@"SharedExtension"]){
    [arrSites addObjectsFromArray:[sharedUserDefaults objectForKey:@"SharedExtension"]];
}
[arrSites addObject:dictSite];

edited Feb 27 '17 at 14:01

Borys Verebskyi

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answered Feb 27 '17 at 10:42

Anbu.Karthik

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score 0 · Answer 2 · answered Feb 27 '17 at 14:00

Most likely the source of the problem is that

arrSites = [sharedUserDefaults objectForKey:@"SharedExtension"];

creates immutable object (NSArray instead of NSMutableArray). You can fix this issue using

arrSites = [[sharedUserDefaults objectForKey:@"SharedExtension"] mutableCopy];

instead.

IOS Share Extension NSMutableArray addObject Unrecognized selector sent to instance

2 Answers2