MFMessageController crash sometimes

Question

I have the concept of sharing to contacts in my App and used MFMessageComposeViewController.

-(IBAction)btnAddClicked:(id)sender {

    @try {

        selections = [[NSMutableArray alloc] init];
        for(NSIndexPath *indexPath in arSelectedRows) {
            NSMutableDictionary *searchable = [[NSMutableDictionary alloc
                                                ]init];

            [searchable setObject:[[contactsArray objectAtIndex:indexPath.row]objectForKey:@"Phone"]forKey:@"Phone"];
            [selections addObject:searchable];
        }
        if([selections count]>0)
        {
            NSString *temp1=@"";
            for(int i=0;i<[selections count];i++)
            {

                toRecepients=[[selections objectAtIndex:i]objectForKey:@"Phone"];

                temp1=[temp1 stringByAppendingString:toRecepients];
                temp1=[temp1 stringByAppendingString:@","];

            }

            temp1 = [temp1 substringToIndex:[temp1 length]-1];


            if(![MFMessageComposeViewController canSendText]) {
                UIAlertView *warningAlert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Your device doesn't support SMS!" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [warningAlert show];
                return;


            }

            NSArray *recipents = [temp1 componentsSeparatedByString:@","];

          MFMessageComposeViewController *messageController = [[MFMessageComposeViewController alloc] init];
            messageController.messageComposeDelegate = self;
            messageController.navigationBar.topItem.leftBarButtonItem.title = @"Cancel";
            [messageController setRecipients:recipents];
            [messageController setBody:self.message];

            [self presentModalViewController:messageController animated:YES];
        }

        else{
            UIAlertView *warningAlert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Select the contacts you would like to share to" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
            [warningAlert show];
            return;



        }

    }

        @catch (NSException *exception) {
            if (UI_USER_INTERFACE_IDIOM()==UIUserInterfaceIdiomPhone)
            {
                ErrorView *errorView=[[ErrorView alloc]initWithNibName:@"ErrorView" bundle:nil];
                if([[[UIDevice currentDevice]systemVersion]floatValue]<5.0)
                {
                    [self presentModalViewController:errorView animated:YES];
                }
                else
                {
                    [self presentViewController:errorView animated:YES completion:nil];
                }
                [errorView release];

            }
            if (UI_USER_INTERFACE_IDIOM()==UIUserInterfaceIdiomPad) {
                ErrorView *errorView=[[ErrorView alloc]initWithNibName:@"ErrorView~iPad" bundle:nil];
                if([[[UIDevice currentDevice]systemVersion]floatValue]<5.0)
                {
                    [self presentModalViewController:errorView animated:YES];
                }
                else
                {
                    [self presentViewController:errorView animated:YES completion:nil];
                }
                [errorView release];

            }
        }    }

    - (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult) result {
        switch (result) {
            case MessageComposeResultCancelled:
            {
                UIAlertView *warningAlert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Failed to send SMS!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [warningAlert show];
                break;
            }

            case MessageComposeResultFailed:
            {
                UIAlertView *warningAlert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Failed to send SMS!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [warningAlert show];
                break;
            }

            case MessageComposeResultSent:
            {
                NSString *messa=[NSString stringWithFormat:@"Shared to %lu contact(s)",(unsigned long)[selections count]];
                UIAlertView *warningAlert = [[UIAlertView alloc] initWithTitle:@"Succesful" message:messa delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [warningAlert show];
                break;
            }

            default:
                break;
        }

        [self dismissViewControllerAnimated:YES completion:nil]; 
}

This is the code Im using, which crashes sometimes and displays the error

Assertion failed: (result == KERN_SUCCESS), function +[XPCMachSendRight wrapSendRight:], file /SourceCache/XPCObjects/XPCObjects-46/XPCMachSendRight.m, line 27.

I have put breakpoint to debug, but xcode doesn't showup where the error is produced.

Any ideas/ suggestions would be appreciable..

This: `if([[[UIDevice currentDevice]systemVersion]floatValue]<5.0)` is not the correct way to checking if a method is available, you should be using: `if([self respondsToSelector:@selector(presentViewController:animated:completion:)])` — rckoenes, Feb 03 '14 at 08:48
Also there is no need to check for the iPad in your code. iOS will load the `~ipad` automatically on an iPad. — rckoenes, Feb 03 '14 at 08:55

score 0 · Answer 1 · answered Feb 03 '14 at 07:44

0

Enable zombie Objects to find out the line of actual crash. You can enable Zombie by following steps:

1.Select you project scheme and chose edit scheme.
2.A window will appear, now select diagnostics.
3.Select check mark for enable Zombie objects.

Now run your project.

answered Feb 03 '14 at 07:44

Aman Aggarwal

3,754
1
19
26

To check using Zombie, we cannot check in simulator for MFMessageController.So Im unable to do it also – Honey Feb 03 '14 at 08:34
Run your project on device. – Aman Aggarwal Feb 03 '14 at 08:35
Yes I ran it on device,but it doesn't show me up the point of exception.I simply get that error and stops running – Honey Feb 03 '14 at 08:37
Can u tell me what else can I apply to reach the error – Honey Feb 03 '14 at 08:49

MFMessageController crash sometimes

1 Answers1