从另一个类执行segue

Question

我试图从NSObject类的不同类调用performSegueWithIdentifier,我收到此错误:

因未捕获的异常'NSInvalidArgumentException'而终止应用程序,原因:

 'Receiver (<DerinlikView: 0x95b1ac0>) has no segue with identifier 'DerinlikToPali''

我的代码是:

Class1(NSObject):

    DerinlikView *derinlik = [DerinlikView alloc];
    [derinlik performSegue];

Class2(UIViewController):

- (void) performSegue
{
    [self performSegueWithIdentifier:@"DerinlikToPali" sender:self];
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ( [[segue identifier] isEqualToString:@"DerinlikToPali"]  )
    {
        Palinolojik *pali = segue.destinationViewController;
    }
}

Answer 1

我遇到了同样的问题,我设法通过使用NSNotificationCenter来解决它.

在NSObject类.m文件中,我添加了:

[[NSNotificationCenter defaultCenter] postNotificationName:@"performsegue"
                                                    object:nil];

在ViewController类.m文件中 -

1.在 - (void)viewDidLoad中我添加了:

 [[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(performsegueNotification:)
                                             name:@"performsegue"
                                           object:nil];

2.在 - (void)viewDidUnload中我添加了:

[[NSNotificationCenter defaultCenter] removeObserver:self];

3.处理方法执行报告通知:

-(void)performsegueNotification:(NSNotification *) notif
{

    [self performSegueWithIdentifier: @"PresentView" sender:self];

}