segue之后的iOS 5黑屏 [英] iOS 5 Black screen after segue

问题描述

我有一个带有故事板和两个场景的iOS 5应用程序。场景1是一个选择列表，而场景2显示每个选择的详细信息

I have an iOS 5 application with a storyboard and two scenes. Scene 1 is a selection list while Scene 2 shows details for each selection

在场景1中我需要传递一个变量，我这样做：

In Scene 1 I need to pass a variable and I do that with:

//Handles the selection 
-(void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
    Guests *myGuests =[guestList objectAtIndex:[indexPath row]];

    selectedGuest = [[NSString alloc] initWithFormat:@"You have selected %@", myGuests.guestID];

    [self performSegueWithIdentifier:@"TGG" sender:self];
}

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    if([[segue identifier] isEqualToString:@"TGG"]){
        GuestDetailsViewController *vc = [segue destinationViewController];
        [vc setGuestSelected:selectedGuest];
    }
}

在场景2中（详情）我用它来验证这样就收到了正确的变量

In Scene 2 (details) I use this to verify that the right variable was received like this

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
    NSString *msg = [[NSString alloc] initWithFormat:@"You have selected %@", guestSelected];
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Selection" message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];          

     nameCell.textLabel.text= msg;

    [super viewDidLoad];
}

所有这些工作正常，警报框显示正确的变量，有过渡到新场景。但是，警报框总共显示5次&结束，一旦完成，整个窗口都是黑色的。此时不显示我的场景（场景2）。所以我知道我有正确的segue，它按照需要转换，我在屏幕上看不到任何东西。

All of this works fine and the alert box shows the right variable and there is a transition to the new scene. HOWEVER, the alert box displays a total of 5 times over & over and, once completed, the whole window is black. Nothing from my scene (Scene 2) is displayed at that point. So I know I have the right segue, it transitions as desired, I just can't see anything on my screen.

推荐答案

我遇到了一个非常相似的情况。我无意中没有评论该方法：

i ran into a situation very similar. i had unintentionally un-commented the method:

-(void)loadView

i 相信此方法会覆盖IB接口，而是通过此代码创建它。检查以确保将其移除或注释掉恕我直言。

i believe this method overrides the IB interface and created it from this code instead. check to make sure it is either removed or commented out IMHO.

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