在 AppDelegate 中使用推送通知重定向视图

Question

我的目标是编写一段代码，当用户收到推送通知时，我希望将该用户重定向到另一个视图。如果用户带有推送通知并且他已经第一次查看控制器（欢迎主屏幕等（但未登录））

var rootViewController = self.window!.rootViewController as! ViewController
rootViewController.performSegueWithIdentifier("hospitalSegue", sender: self)

这几行代码可以正常工作，但是，如果用户在另一个视图控制器中（登录 in/login/user 页面等），这段代码将不起作用并重定向。我尝试了一切，但仍然无法提出解决方案。我的最终目标是：

if let rootViewController = self.window!.rootViewController as? ViewController
{
    var rootView: UserViewController = UserViewController()

    if let window = self.window{
        window.rootViewController = rootView
    }

    rootViewController.performSegueWithIdentifier("hospitalSegue", sender: self)
    println(self.window?.rootViewController)
}

谁能给我个主意？

Answer 1

答案码是Objective-C，我想说说逻辑。为此，当您创建推送通知时，您必须设置 userInfo 值以通过推送通知传递数据。

使用此委托方法：application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler

您可以通过处理 userInfo

来决定是否要显示哪个视图

NSDictionary *segueDictionary = [userInfo valueForKey:@"aps"];

NSString *segueName=[[NSString alloc]initWithFormat:@"%@",[segueDictionary valueForKey:@"segueName"]];

if([segueName isEqualToString:@"hospitalSegue"]) 
{
// implement your code to redirect
}

Answer 2

答案代码是Objective-C，你可以使用下面的方法从app delegate prentviewcontroller 我使用下面的代码解决了这个问题：

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
      [[self topViewController]presentViewController:nav animated:YES    completion:nil];
}

- (UIViewController*)topViewController {
    return [self topViewControllerWithRootViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
}

- (UIViewController*)topViewControllerWithRootViewController:(UIViewController*)rootViewController {
    if ([rootViewController isKindOfClass:[UITabBarController class]]) {
        UITabBarController* tabBarController = (UITabBarController*)rootViewController;
        return [self topViewControllerWithRootViewController:tabBarController.selectedViewController];
    } else if ([rootViewController isKindOfClass:[UINavigationController class]]) {
        UINavigationController* navigationController = (UINavigationController*)rootViewController;
        return [self topViewControllerWithRootViewController:navigationController.visibleViewController];
    } else if (rootViewController.presentedViewController) {
        UIViewController* presentedViewController = rootViewController.presentedViewController;
        return [self topViewControllerWithRootViewController:presentedViewController];
    } else {
        return rootViewController;
    }
}

在 AppDelegate 中使用推送通知重定向视图

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