xamarin Android.Content.Res.Resources+NotFoundException: '无法找到资源 ID #0xffffffff'

Question

error:

xamarin Android.Content.Res.Resources+NotFoundException: 'Unable to find resource ID #0xffffffff'

error is on line auth = DependencyService.Get<IAuth>();

shared project

 public partial class PhoneAuthPage : ContentPage
{
      IAuth auth;

        public PhoneAuthPage()
        {
            InitializeComponent();

            auth = DependencyService.Get<IAuth>();
       }
       ...
}

android project

[assembly: Dependency(typeof(AuthDriod))]
namespace TestApp_Firebase.Droid.Views.PhoneViews
{
    public class AuthDriod : PhoneAuthProvider.OnVerificationStateChangedCallbacks, IAuth
    {
...
}

AppShell.xaml

<Shell ...
   xmlns:local="clr-namespace:TestApp_Firebase.Views"
   xmlns:PhoneViews="clr-namespace:TestApp_Firebase.vPhone"
   ...>

<FlyoutItem Title="Main Home Page" Icon="icon_about.png">
    <ShellContent Route="MainHomePage" ContentTemplate="{DataTemplate local:MainHomePage}" />
</FlyoutItem>
<FlyoutItem Title="Phone Auth Page" Icon="icon_about.png">
    <ShellContent Route="PhoneAuthPage" ContentTemplate="{DataTemplate PhoneViews:PhoneAuthPage}" />
</FlyoutItem>

</Shell>

Answer 1

In my case, nuget pack "Xamarin.GooglePlayServices.Basement" broken appshell menu. Not know why.

Answer 2

I just got it working by downgrading my

Xamarin.GooglePlayServices.Base

To version 116.0.1. Did not touch anything else