Question

我尝试在我的ios应用程序中使用Onesignal Notifications，在使用Xamarin的Visual Studio中创建。我想在用户点击通知时让应用程序打开ViewController，但它不起作用。当用户点击通知时，应用程序会打开ViewController，当用户应用程序转到后台时该窗口处于活动状希望有人表现出来，我犯了错误代码如下：

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 是收到的所有通知用户的简单列表。

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而不是创建新实例。所以请修改如下：

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，请提供此视图控制器（NotificationsViewController）。

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

1 个答案: