iOS故事板传递数据navigationViewController

发布于 2024-12-20 07:44:58 字数 940 浏览 1 评论 0原文

我在视图之间正确传递数据时遇到问题，但不是以标准方式传递数据。

描述我的问题的图片：

我使用两个 segue 标识符之一performSegueWithIdentifier，然后我想将数据传递给名为“Firmy”或“Oddzialy”的 ViewController。

传递数据代码：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
  if ([[segue identifier] isEqualToString:@"sLogowanieFirmy"]) {
      FirmyVC *firmyVC = [segue destinationViewController];
      firmyVC.tabFirmy = self.tabFirmy;
  }
  if ([[segue identifier] isEqualToString:@"sLogowanieOddzialy"]) {
      OddzialyVC *oddzialyVC = [segue destinationViewController];
      oddzialyVC.wybranaFirma = [self.tabFirmy objectAtIndex:0];
  }
}

问题出在方法[segue destinationViewController]上，因为segue的destinationViewController是NavigationViewController。

那么传递数据和拥有独立导航控制器的正确方法是什么？

原文

I have problem with proper passing data between view's but not in standard way.

Picture describing my problem:

I performSegueWithIdentifier with one of two segue identifiers and then in I want to pass data to ViewController called "Firmy" or "Oddzialy".

Passing data code:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
  if ([[segue identifier] isEqualToString:@"sLogowanieFirmy"]) {
      FirmyVC *firmyVC = [segue destinationViewController];
      firmyVC.tabFirmy = self.tabFirmy;
  }
  if ([[segue identifier] isEqualToString:@"sLogowanieOddzialy"]) {
      OddzialyVC *oddzialyVC = [segue destinationViewController];
      oddzialyVC.wybranaFirma = [self.tabFirmy objectAtIndex:0];
  }
}

Problem is with method [segue destinationViewController] becouse destinationViewController for segue is NavigationViewController.

So what is proper way to pass data and have independent Navigation Controllers?

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九八野马 2024-12-27 07:44:58

UINavigationController 有一个名为 topViewController 的属性，它返回位于堆栈顶部的视图控制器。

所以你的 prepareForSegue: 方法可能看起来像这样......

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"sLogowanieFirmy"]) {
        UINavigationController *nav = [segue destinationViewController];
        FirmyVC *firmyVC = (FirmyVC *)nav.topViewController;
        firmyVC.tabFirmy = self.tabFirmy;
    }

    // etc...
}

UINavigationController has a property called topViewController which returns the view controller that is at the top of the stack.

So your prepareForSegue: method may look something like this...

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"sLogowanieFirmy"]) {
        UINavigationController *nav = [segue destinationViewController];
        FirmyVC *firmyVC = (FirmyVC *)nav.topViewController;
        firmyVC.tabFirmy = self.tabFirmy;
    }

    // etc...
}

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韬韬不绝 2024-12-27 07:44:58

这是快速的：

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) 
{    
    if (segue.identifier == "sLogowanieFirmy") {
        let nav = segue.destinationViewController as! UINavigationController 
        let firmyVC = nav.topViewController as! FirmyVC
        firmyVC.tabFirmy = self.tabFirmy            
    }

    // etc...
}

Here it is in swift:

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) 
{    
    if (segue.identifier == "sLogowanieFirmy") {
        let nav = segue.destinationViewController as! UINavigationController 
        let firmyVC = nav.topViewController as! FirmyVC
        firmyVC.tabFirmy = self.tabFirmy            
    }

    // etc...
}

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