MFMessageController crash sometimes - iphone

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..

Answer 1

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.