Question

我正在使用LocalNotification插件（nuget）生成电话事件通知，效果很好。如果用户导航到列出通知并选择一个通知的页面，然后转到 NotificationPageModel.cs页面。他们从那里按下一个按钮将其导航开，只要手动导航即可

如果用户单击电话的通知（app.xaml.cs：OnLocalNotificationTapped）然后尝试导航时会生成一个FreshTinyIoC.TinyIoCResolutionException。

当用户点击“ 通知（masterDetailNav.Navigation.PushModalAsync(npage);）吗？

相关版本：Xamarin.Forms v3.6.0.264807 FreshMvvm v3.0.0 Thudugala v4.0.5的Plugin.LocalNotification

App.xaml.cs

void OnLocalNotificationTapped(NotificationTappedEventArgs e)
{
    var _logger = FreshMvvm.FreshIOC.Container.Resolve<ILoggingService>();
    _logger.Info("Pressed notification: {0}", e.Data);
    Notification notification = new Notification();
    if (string.IsNullOrWhiteSpace(e.Data))
    {
        return;
    }
    else
    {
        notification = JsonConvert.DeserializeObject<Notification>(e.Data);
    }

    //CoreMethods.PushPageModel<NotificationPageModel>(notification); //cant find coremethods
    var npage = FreshPageModelResolver.ResolvePageModel<NotificationPageModel>(notification);
    masterDetailNav.Navigation.PushModalAsync(npage);
}

NotificationPageModel.cs：

public async void Cancel()
{
    _logger.Info("Notification {0} Cancel: {1}", Notification.Gateway, Notification.TimeStamp);

    //Navigate away from page
    //await CoreMethods.PopPageModel(); //this only works if manually navigated to
    //attempt #1
    await CoreMethods.PushPageModel<HomePageModel>();
}

public async void Remove()
{
    _logger.Info("Notification {0} Remove: {1}", Notification.Gateway, Notification.TimeStamp);

    //Remove notification
    try
    {
        _user.Notifications.Remove(Notification);
    }
    catch (Exception ex)
    {
        _logger.Warn("Remove Notification: {0}", ex.Message);
    }

    //Navigate away from page
    //await CoreMethods.PopPageModel(); //this only works if manually navigated to
    //attempt #2
    var hpage = FreshPageModelResolver.ResolvePageModel<HomePageModel>();
    await CoreMethods.PushPageModelWithNewNavigation<HomePageModel>(hpage);
}

Stacktrace

FreshTinyIoC.TinyIoCResolutionException消息=解析失败： IFreshNavigationService Source = mscorlib StackTrace：在 FreshTinyIoC.FreshTinyIoCContainer.ResolveInternal （FreshTinyIoC.FreshTinyIoCContainer + TypeRegistration注册， FreshTinyIoC.NamedParameterOverloads参数， FreshTinyIoC.ResolveOptions选项）[0x000f7]在 C：\ Projects \ FreshMvvm \ src \ FreshIOC \ FreshTinyIOC.cs：3142 at FreshTinyIoC.FreshTinyIoCContainer.Resolve（System.Type resolveType， System.String名称）[0x00000]在 C：\ Projects \ FreshMvvm \ src \ FreshIOC \ FreshTinyIOC.cs：1211 at FreshTinyIoC.FreshTinyIoCContainer.Resolve [ResolveType]（System.String 名称）[0x00000]在 C：\ Projects \ FreshMvvm \ src \ FreshIOC \ FreshTinyIOC.cs：1332位于 FreshMvvm.FreshTinyIOCBuiltIn.Resolve [ResolveType]（System.String 名称）[0x00000]在 C：\ Projects \ FreshMvvm \ src \ FreshMvvm \ FreshTinyIOCBuiltIn.cs：31 at FreshMvvm.PageModelCoreMethods.PushNewNavigationServiceModal （FreshMvvm.IFreshNavigationService newNavigationService， FreshMvvm.FreshBasePageModel [] basePageModels，System.Boolean动画） [0x00073]在 C：\ Projects \ FreshMvvm \ src \ FreshMvvm \ PageModelCoreMethods.cs：178 at FreshMvvm.PageModelCoreMethods.PushPageModelWithNewNavigation [T] （System.Object数据，System.Boolean动画）[0x00060]在 C：\ Projects \ FreshMvvm \ src \ FreshMvvm \ PageModelCoreMethods.cs：235 at cdaxrobot.PageModels.NotificationPageModel.Go（）[0x00225]在 C：\ Work \ RobotApp \ App \ cdaxrobot \ cdaxrobot \ cdaxrobot \ PageModels \ NotificationPageModel.cs：113 在 System.Runtime.CompilerServices.AsyncMethodBuilderCore + <> c.b__7_0 （系统对象状态）在[0x00000]中 /Users/builder/jenkins/workspace/archive-mono/2019-08/android/release/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1021 在Android.App.SyncContext + <> c__DisplayClass2_0.b__0（）在<11f101b564894ca7af6c482ddc51c698>：0中的[0x00000] Java.Lang.Thread + RunnableImplementor.Run（）[0x00008]在 <11f101b564894ca7af6c482ddc51c698>：0在 Java.Lang.IRunnableInvoker.n_Run（System.IntPtr jnienv，System.IntPtr native_this）[0x00009]在<11f101b564894ca7af6c482ddc51c698>：0中（包装器动态方法） Android.Runtime.DynamicMethodNameCounter.41（intptr，intptr）

Answer 1

感谢您的回复。我设法通过创建一个新的NavigationContainer对其进行了修复：

notificationPage = FreshMvvm.FreshPageModelResolver.ResolvePageModel<NotificationPageModel>(true);
notificationContainer = new FreshNavigationContainer(notificationPage, Models.Constants.NotificationContainer);

void OnLocalNotificationTapped(NotificationTappedEventArgs e)
{
    MainPage = notificationContainer;
}

然后在页面中执行以下操作：

if (CameFromNotification == true)
{
    _logger.Debug("Navigating back to MainContainer");
    CoreMethods.SwitchOutRootNavigation(Models.Constants.MainContainer);
}
else
{
    _logger.Debug("Navigating by popping the stack");
    await CoreMethods.PopPageModel();
}

当离开模态页面时，FreshMVVM导航会引发异常

1 个答案: