当应用程序处于终止模式时，如何从推送通知重定向到特定的视图控制器

Posted 2023-03-10

【中文标题】当应用程序处于终止模式时，如何从推送通知重定向到特定的视图控制器

【英文标题】：How to redirect to particular view controller from push notification when app is in terminated mode

【发布时间】：2019-06-27 13:05:15

【问题描述】：

我需要将应用程序从收到的推送通知重定向到特定的视图控制器。但是，我无法获得将调用哪个委托方法。请指导。

以下是我迄今为止尝试过的代码。我已经尝试过 didFinishLaunchingWithOptions 但不起作用。

 if (launchOptions)  //launchOptions is not nil
    NSDictionary *userInfo = [launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
    NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];

    if (apsInfo)  //apsInfo is not nil
        [self performSelector:@selector(notificationClickedInNotificationPanel:)
                   withObject:userInfo
                   afterDelay:1];
    

【问题讨论】：

@Rajesh 替换为？

看起来不一样吗？

【参考方案1】：

@available(ios 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) 

// Called when App is in Foreground // Using the data received in the notification you can call the desired view controller

    completionHandler([.alert, .badge, .sound])

和，

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) 

// Called when App is not in  Foreground // Using the data received in the notification you can call the desired view controller
    completionHandler()

【讨论】：

请仅目标 c

两者都实现了代码，但都没有工作，甚至无法检查它们是否被调用。

它们被调用，检查只需转到您的应用程序目标 -> 编辑方案 -> 等待可执行文件启动。在这些方法中添加断点并点击你的通知

何时启动应用程序。应用程序关闭，然后推送接收，然后点击通知面板。那么，何时启动应用程序。

首先，请告诉我是否可以在应用关闭时从通知点击重定向到任何屏幕？

【参考方案2】：

我最近做了一些事情，但它在 Swift 但如果你想在 OC 中这样做，应该非常相似。

提示：如果您的应用程序终止，didReceiveRemoteNotification 将不会被调用，唯一被调用的方法是 didFinishLaunchingWithOptions

在didFinishLaunchingWithOptions 中你可以做这样的事情

if let launchOpts = launchOptions as [UIApplication.LaunchOptionsKey: Any]? 
            if let notificationPayload = launchOpts[UIApplication.LaunchOptionsKey.remoteNotification] as? NSDictionary 

                 let apsBody = notificationPayload["aps"] as? NSDictionary
                 if(apsBody != nil)
                 // here you can either read value from the `apsBody` dictionary 
                //OR just push the respective controller you want to push
                 
            
        else
           //go with the regular flow
        

当您的应用终止时您没有 navigationController 的实例，因此您可能需要确保您有一个导航控制器的实例来推送您的视图。

希望有帮助

【参考方案3】：

当应用终止后，您可以从launchOptions 找到推送通知负载

这里是更多信息的参考： https://developer.apple.com/documentation/uikit/uiapplication/launchoptionskey/1622967-remotenotification

【参考方案4】：

您应该在 didFinishLaunchingWithOptions 和 didReceiveRemoteNotification 中都这样做，它们在不同的时间被调用。第一个在点击通知时应用完全关闭时调用，第二个在应用打开并使用时调用。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

    if (launchOptions != nil)
    
        NSDictionary *dictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
        if (dictionary != nil)
        

            self.animal_id = [dictionary objectForKey:@"animal_id"];
            self.notificationText = [dictionary objectForKey:@"alert"];
            self.soundFile = [dictionary objectForKey:@"sound"];

            if ([self.animal_id length] > 0) 

                NSInteger numberOfBadges = [UIApplication sharedApplication].applicationIconBadgeNumber;
                numberOfBadges -=1;

                if (numberOfBadges < 0) 
                    numberOfBadges = 0;
                

                [[UIApplication sharedApplication] setApplicationIconBadgeNumber:numberOfBadges];

                doNotShowAlert = YES;
                [self showPetDetails:self.animal_id];
             else 
                doNotShowAlert = NO;
            

        

    

    return YES;

这里：

-(void)application:(UIApplication *)app didReceiveRemoteNotification:(NSDictionary *)userInfo


    NSInteger numberOfBadges = [UIApplication sharedApplication].applicationIconBadgeNumber;
    numberOfBadges -=1;

    if (numberOfBadges < 0) 
        numberOfBadges = 0;
    

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:numberOfBadges];

    self.animal_id  = [userInfo objectForKey:@"animal_id"];

    NSDictionary *aps = [userInfo objectForKey:@"aps"];

    self.notificationText = [aps objectForKey:@"alert"];
    self.soundFile = [aps objectForKey:@"sound"];

   [self showPetDetails:self.animal_id];

showPetDetails 到数据库中获取要显示的详细信息。当它拥有它时，它会调用另一个方法来显示详细视图：

PetDetailViewController *notificationController = [self.rootNavigationController.storyboard instantiateViewControllerWithIdentifier:@"petdetail"];
notificationController.petDetail = petDetail;
notificationController.currentImage = nil;

[self.rootNavigationController pushViewController:notificationController animated:YES];