Question

我有在我的应用程序中与联系人共享并使用MFMessageComposeViewController的概念。

-(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]; 
}

这是我使用的代码，有时会崩溃并显示错误

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

我已将断点设置为调试，但xcode不会显示错误产生的位置。

任何想法/建议都会很明显......

Answer 1

启用zombie Objects查找实际崩溃的行。您可以按照以下步骤启用Zombie：

1.选择项目方案并选择编辑方案 2.将出现一个窗口，现在选择诊断 3.选择勾选标记以启用Zombie对象。

现在运行你的项目。

MFMessageController有时会崩溃

1 个答案: