ios - Onesignal NotificationOpened 在 iOS 应用程序中不起作用

Question

我尝试在我的 ios 应用程序中使用 Onesignal Notifications，它是在 Visual Studio 中使用 Xamarin 创建的。我想让应用程序在用户点击通知时打开 ViewController，但它不起作用。当用户点击通知时，应用程序打开 ViewController，当用户应用程序转到后台时，该 View Controller 处于事件状态。希望有人指出，我在哪里犯了错误这里的代码:

public class AppDelegate : UIApplicationDelegate
{
    public static UIStoryboard Storyboard = UIStoryboard.FromName("Main", null);
    public override UIWindow Window {
        get;
        set;
    }

    public override bool FinishedLaunching (UIApplication application, NSDictionary launchOptions)
    {
        OneSignal.Current.StartInit("mykey")
            .InFocusDisplaying(OSInFocusDisplayOption.None)
            .HandleNotificationOpened(HandleNotificationOpened)
            .EndInit();
        OneSignal.Current.IdsAvailable(IdsAvailable);            
        return true;
    }
    void IdsAvailable(string userID, string pushToken)
    {
        GlobalUserInfo._token = userID;
    }
    private static void HandleNotificationOpened(OSNotificationOpenedResult result)
    {
        OSNotificationPayload payload = result.notification.payload;
        Dictionary<string, object> additionalData = payload.additionalData;

        if (additionalData != null)
        {
            UINavigationController NavigationController = (UINavigationController)Storyboard.InstantiateInitialViewController();
            NotificationsViewController notificationsController = Storyboard.InstantiateViewController("NotificationsViewController") as NotificationsViewController;
            NavigationController.PushViewController(notificationsController, true);
        }
    }
}

NotificationsViewController 是用户收到的所有通知的简单列表。

已更新正如我所注意到的，函数 HandleNotificationOpened 在 iOS 中不起作用。

已更新发现错误。我忘了，我在其他地方使用 OneSignal Init。当我删除重复项时，HandleNotificationOpened 开始正常工作。

Answer 1

您应该找到当前的根 ViewController，而不是创建一个新实例。所以请这样修改:

if (additionalData != null)
{
    UINavigationController NavigationController = (UINavigationController)Window.RootViewController;
    NotificationsViewController notificationsController = Storyboard.InstantiateViewController("NotificationsViewController") as NotificationsViewController;
    NavigationController.PushViewController(notificationsController, true);
}

此外，如果根 ViewController 是 UITabBarController，请提供此 View Controller (NotificationsViewController)。