使用UIStoryBoard处理基于“自定义URL方案”的屏幕

Praveenkumar

我有两个名为的应用程序，

SendDataApp
ReceiveDataApp

这是我的ReceiveDataApp的StoryBoard

我可以将数据发送到接收应用程序，并可以通过以下方法进行处理，

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options;

但是，这里的问题是我想将我从SendDataApp接收的数据显示给我正在尝试使用以下方法来处理DetailViewController的ReceivedDataApp，

Appdelegate.m

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options {
    UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    ViewController *viewController = (ViewController *)[storyBoard instantiateViewControllerWithIdentifier:@"View"];
    [viewController receivedURL:url];
    return YES;
}

ViewController.m

- (void)receivedURL:(NSURL *)url {
    [self performSegueWithIdentifier:@"detailIdentifier" sender:url];
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([[segue identifier] isEqualToString:@"detailIdentifier"]) {
        DetailViewController *detail = [segue destinationViewController];
        detail.receivingURL = (NSURL *)sender;
    }
}

但是，这给了我一些错误

Terminating app due to uncaught exception 'NSGenericException', reason: 'Could not find a navigation controller for segue 'detailIdentifier'. Push segues can only be used when the source controller is managed by an instance of UINavigationController.

My two viewcontrollers embedded in UINavigationController only. And, normally i can view detail page by button action. But, not by URL Scheme

What was the mistake here? And, am i doing anything wrong here?

Give me some suggestions or idea to handle this.

Michael Dautermann

You instantiate your ViewController in your AppDelegate's openURL method and ARC immediately releases the view controller when that openURL method returns. It doesn't survive long enough to be added to the navigation controller

您真正需要做的是获取当前显示的视图控制器（可能是您的“ View Controller” ，也可能不是您的“ ”），然后执行此操作。

换句话说，在您的应用程序委托中：

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options {

    UIViewController *rootvc = self.window.rootViewController;

    // make sure the root view controller is the ViewController class you want
    if ([rootvc isKindOfClass: [ViewController class]])
    {
        ViewController * vc = (ViewController *)rootvc;
        [vc receivedURL:url];
    }
    return YES;
}

您可以在此问题和此问题中看到更多我正在尝试使用答案做的事情。

最后，您确实必须重命名子类化的视图控制器，使其名称与超级通用的“视图控制器”和“详细信息视图控制器”名称不同。

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