通过推送通知打开spicific ViewController

Question

我遇到了一些触发推送通知的麻烦。我需要打开特定的VC，当用户点击具有一些有效载荷的通知时。考虑到情况的应用程序是背景我用这个代码

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) { 

     if ((application.applicationState == .inactive || application.applicationState == .background)) { 

      //open specific VC depends on notification payload 
     } 
    } 

这里的问题开始：1）我不能从AppDelegate中推VC，只能通过设置新rootController 2）我必须从AppDelegate中的didReceiveRemoteNotification方法使用此代码

Answer 1

请参考这个答案：如果应用程序从通知打开How to make your push notification Open a certain view controller?

使用此代码在AppDelegate的检测。在应用程序激活之前，应用程序状态为UIApplicationStateInactive时，请设置初始VC。编写代码来设置您的VC以及VC中的内容。

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler{ 

    if(application.applicationState == UIApplicationStateActive) { 

     //app is currently active, can update badges count here 

    } else if(application.applicationState == UIApplicationStateBackground){ 

     //app is in background, if content-available key of your notification is set to 1, poll to your backend to retrieve data and update your interface here 

    } else if(application.applicationState == UIApplicationStateInactive){ 

     //app is transitioning from background to foreground (user taps notification), do what you need when user taps here 

     self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds]; 

     UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]; 

     UIViewController *viewController = // determine the initial view controller here and instantiate it with [storyboard instantiateViewControllerWithIdentifier:<storyboard id>]; 

     self.window.rootViewController = viewController; 
     [self.window makeKeyAndVisible]; 

    } 

}