Question

我在删除模态视图时遇到问题。我想显示（按下按钮后）我自己的SendMailViewController，它自己显示MFMailComposeViewController。然后在按下取消发送后，在我自己的didFinishWithResult中的SendMailView控制器中，我做了一个[self dismissModalViewControllerAnimated：YES]并且可以正常工作。 MFMailComposeView消失了。
但是屏幕保持黑色......它认为我还必须从它的父节点中删除我的SendMailViewController。这就是我按下按钮的地方......即使在[self removeFromParentViewController]之后它仍然保持黑色......

我哪里出错？

是的，我想要额外的viewcontroller（SendMailViewController），因为该控制器将成为MFMailComposeViewController的委托。否则我的来电者（带按钮的控制器）负有很大的责任。或者我也在这里出错了？

谢谢，

/ jr00n

- (IBAction)tapExportButton:(id)sender
{

    SendMailViewController *sendMailController = [[SendMailViewController alloc]init];

    [self presentViewController:sendMailController animated:YES completion:^()    {[sendMailController openMailDialog];}];

    [sendMailController release];

}

SendMailViewController：

- (void)openMailDialog
{
    if ([MFMailComposeViewController canSendMail])
    {
        MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
        mailer.mailComposeDelegate = self;
     ...
        [self presentModalViewController:mailer animated:YES];
    }
}


- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
....
 // Remove the mail view
 // first i did this:
 // [self dismissModalViewControllerAnimated:YES];

    [self dismissViewControllerAnimated:YES completion:^{[self removeFromParentViewController];}];
}

Answer 1

问题在于你的didFinishWithResult方法中的[self dismissViewControllerAnimated:YES completion:^{[self removeFromParentViewController];}]; 删除该行并添加以下行

[controller dismissViewControllerAnimated:YES completion:^{[self dismissViewControllerAnimated:YES completion:nil]}];

确保在解除MailController

后解除控制器

从父屏幕删除ViewController保持黑色

1 个答案: