Question

我有一个UIViewController，我必须将值（UIImage，NSString）传递给UINavigationViewController，我正在使用

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    AppDetail *advc = [segue destinationViewController];
    if ([[segue identifier] isEqualToString:@"showDetail"]) {
        advc.appTitel = name;
        advc.appIcon = icon;
        advc.detailAppName = detileName;
        advc.appDescription = description;
        advc.appDeveloper = developer;
    }
}

将值传递给UIViewController，如果我将其直接传递给UIViewController，它会完美运行，但我无法将其传递给UINavigationViewController，有谁知道我怎么能这样做？

Answer 1

我有来自Apple segue示例的示例代码。也许它会有所帮助。

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"Room Create"]) {
        // Prepare the settings view where the user inputs the 'serviceType' and local peer 'displayName'
        UINavigationController *navController = segue.destinationViewController;
        SettingsViewController *viewController = (SettingsViewController *)navController.topViewController;
        viewController.delegate = self;
        // Pass the existing properties (if any) so the user can edit them.
        viewController.displayName = self.displayName;
        viewController.serviceType = self.serviceType;
    }
}

Answer 2

要使用{JINavigationController在您的情况下使用Segue传递值，请尝试以下代码：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"showDetail"]) 
    {
        UINavigationController *navController = (UINavigationController *)segue.destinationViewController;
        AppDetail *advc = (AppDetail *)navController.topViewController;

        advc.appTitel = name;
        advc.appIcon = icon;
        advc.detailAppName = detileName;
        advc.appDescription = description;
        advc.appDeveloper = developer;
    }
}

如果您不使用UINavigationController，则需要使用以下代码：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"showDetail"]) {

       // Get reference to the destination view controller
        AppDetail *advcc = segue.destinationViewController;

        advc.appTitel = name;
        advc.appIcon = icon;
        advc.detailAppName = detileName;
        advc.appDescription = description;
    }
}

如何将值传递给另一个UINavigationViewController

2 个答案: