Question

我想根据用户状态（NSUserDefaults值）切换场景，所以我使用两个视图控制器和segues。但它没有用。我相信我的代码有问题。请帮忙。谢谢。

- (void)viewDidLoad
{

//sleep(5);
NSString *usercode = [[NSUserDefaults standardUserDefaults] objectForKey:@"usercode"];
if([usercode isEqualToString:@""] || usercode == nil){
    [self performSegueWithIdentifier:@"loginSegue" sender:self];
    NSLog(@"usercode start: key=%@", usercode);
}else{
    [self performSegueWithIdentifier:@"loggedInSegue" sender:self];
    NSLog(@"usercode start: not null key=%@", usercode);
}
[super viewDidLoad];

}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([[segue identifier] isEqualToString:@"loginSegue"])
{
    NSLog(@"delegated");
    //loginViewController *loginController = [segue destinationViewController];        
    NSLog(@"%@", NSStringFromClass([[segue destinationViewController] class]));
    //controller.delegate=self;
}else if ([[segue identifier] isEqualToString:@"loggedInSegue"]){
    NSLog(@"logged in delegated"); 
}
}

Answer 1

应该在

-(void)viewDidAppear

而不是

-(void)viewDidLoad.

Xcode performSegueWithIdentifier不工作

1 个答案: