Navigation back from LockScreen

问题

i have a carousel page and on each of them i have a button and the user is able to lock the page. For that i am using dependency service and that works fine, however if i want to come back from the second page i am redirected to the first page and the page sort of "freezes". I need to be able to return to the second page of the carousel page. Can you help please?

I have tried INavigation but i am getting a null exception. 2.I have also tried just override OnBackButton but that gets me back to the main page

namespace AVAT.Droid.Renderers {

 [Activity(Label = "LockScreenActivity", Theme = "@style/Theme.Splash")]
 public class LockScreenActivity : FormsAppCompatActivity
 {
     INavigation _navigation;
     public LockScreenActivity(INavigation navigation;)
     {
        learningPage = new LearningPage();
        _navigation = navigation;

     }
     protected override void OnCreate(Bundle savedInstanceState)
     {
         base.OnCreate(savedInstanceState);


         // Set our view from the "main" layout resource
         SetContentView(Resource.Drawable.lockScreenLayout);

         var button = FindViewById<Android.Widget.Button>(Resource.Id.backButton);
         button.Text = "JÍT ZPĚT";
         //var index = learningPage.beforeLock;
         button.Click += delegate
         {
             FinishAndRemoveTask();
            // _navigation.PopAsync();
         };
     }



     public override bool OnKeyDown([GeneratedEnum] Keycode keyCode, KeyEvent e)
     {
         if (keyCode == Keycode.VolumeDown)
         {
             Player.GoOneSentenceBack(Article.GetTrackId());
             return true;
         }

         if (keyCode == Keycode.VolumeUp)
         {
            PlayPause();
             return true;
         }
         else
         {
             return base.OnKeyDown(keyCode, e);
         }

     }
 }

来源：https://stackoverflow.com/questions/62530731/navigation-back-from-lockscreen

标签

xamarin.forms

xamarin.android