objective-c - 在 dismissModalViewController 中获取 SIGABRT 错误

Question

我在取消 MFMailComposeViewController 时收到 SIGABRT 错误，正好在 dismissViewController 中，不起作用

我在 UINavigationController 中有一个 UIViewController。

我的代码:

- (void)sendMail {
    if ([MFMailComposeViewController canSendMail]) {
        controller = [[MFMailComposeViewController alloc] init];
        [[controller navigationBar] setTintColor:[UIColor getHexColorWithRGB:@"e2de09" alpha:1.0f]];
        controller.mailComposeDelegate = self;
        [controller setSubject:@"Subject"];            

        NSString *msg="xxxxx";
        [controller setMessageBody:msg isHTML:YES];

        [self presentModalViewController:controller animated:YES];

    } else {
        NSString * errorString = [NSString stringWithFormat:@"mail account not set."];

        UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle:@"Error:" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [errorAlert show];
    }
}

presentModalViewController:animated: 工作正常。

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
    [self becomeFirstResponder];
    [self dismissModalViewControllerAnimated:YES];
}

但是调用 [self dissmissModalViewControllerAnimatedLYES] 会导致 SIGABRT 错误。

Answer 1

我认为应该在 MFMailComposer 对象上调用“dismissModalViewControllerAnimated”，在您的例子中是“controller”。请注意，它实际上是一个 View Controller 。