从 AppDelegate 重定向到特定屏幕：点击通知

Posted 2023-02-23

【中文标题】从 AppDelegate 重定向到特定屏幕：点击通知

【英文标题】：Redirect to Specific screen from AppDelegate : On tap Notification

【发布时间】：2016-08-16 14:04:40

【问题描述】：

用于消息应用程序。

结构是

TabBarController -> NavigationController->View_One -> View_Two。每当用户在通知选项卡上时，我需要从 appdelegate.m [DidReceiveRemoteNotification method]重定向到 View_2。

这个当前代码帮助我登陆 View_One。如何在不影响 NavigationController 和 Tabbar 控制器功能的情况下转到 View_Two？

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
if(application.applicationState == UIApplicationStateInactive||application.applicationState == UIApplicationStateBackground)

    UIStoryboard *mainSB = [UIStoryboard storyboardWithName:MAIN_STORYBOARD bundle:nil];
    UITabBarController *tabBarController = [mainSB instantiateViewControllerWithIdentifier:TAB_BAR_ID];
    tabBarController.selectedIndex = 0;
    [[UIApplication sharedApplication].keyWindow setRootViewController:tabBarController];
    [self.window makeKeyAndVisible];

提前致谢。

【问题讨论】：

它打开到你的2索引

编辑了我的问题，请检查一次。

【参考方案1】：

试试这个

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
if(application.applicationState == UIApplicationStateInactive||application.applicationState == UIApplicationStateBackground)

    UIStoryboard *mainSB = [UIStoryboard storyboardWithName:MAIN_STORYBOARD bundle:nil];
    UITabBarController *tabBarController = [mainSB instantiateViewControllerWithIdentifier:TAB_BAR_ID];
    tabBarController.selectedIndex = 0;
    UINavigationController *nav = [tabBarController.viewControllers objectAtIndex:0];
    View2 *destViewController = (View2*) [self.nav.viewControllers objectAtIndex:0];
    [nav pushViewController:destViewController animated:YES];

选择 2

我不确定上述方法是否有效，在这里我们使用一些 hacky 方法，在这里根据您的代码，我们使用NSUSerdefault 概念

 -(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
if(application.applicationState == UIApplicationStateInactive||application.applicationState == UIApplicationStateBackground)

    UIStoryboard *mainSB = [UIStoryboard storyboardWithName:MAIN_STORYBOARD bundle:nil];
    UITabBarController *tabBarController = [mainSB instantiateViewControllerWithIdentifier:TAB_BAR_ID];
    tabBarController.selectedIndex = 0;
    [[NSUserDefaults standardUserDefaults]setObject:@"APNS" forKey:@"openVC"]
    [[UIApplication sharedApplication].keyWindow setRootViewController:tabBarController];
    [self.window makeKeyAndVisible];

检索喜欢

- (void)viewDidLoad // or call in loadView Method 

 if ([[[NSUserDefaults standardUserDefaults]objectForKey:@"openVC"]isEqualToString:@"APNS"])

 // Navigate to second VC
 
 

终于

在你的第二个VC上

 -(void)viewWillDisappear:(BOOL)animated

[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"openVC"];
[super viewWillDisappear:animated];

【讨论】：

Tq。在这里你没有提到 RootViewController。还好吗？

@Ramdy - 没必要，试一次，如果你没有得到答案，我们会采取其他一些棘手的方法。

在第一种方法中，View2 destViewController = (View2) [self.nav.viewControllers objectAtIndex:0];此代码返回 View1 的引用。

让我们continue this discussion in chat。

是的，我使用了第二个选择-2。工作正常。