How to prevent that the Pop-up message reloads the current content page

Question

If the location on the Android phone is not turn on, the native code called by the Xamarin.forms is called which shows the Pop-up for enabling location. This causes that the actual Xamarin content page goes to the background and consequently OnDisappiring event is called. Is it possible to prevent this behavior? I do not want that showing the PopUp implies that the OnDisappring event is called. Here is my code:

try
            {               

               LocationRequest locationRequest = LocationRequest.Create().SetPriority(LocationRequest.PriorityHighAccuracy).SetInterval(60 * 1000 * 5).SetFastestInterval(60 * 1000 * 2);

               LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().AddLocationRequest(locationRequest).SetNeedBle(true);

               var result = await LocationServices.GetSettingsClient(MainActivity.CurrentActivity).CheckLocationSettingsAsync(builder.Build());

            }
            catch(ResolvableApiException ex)
            {

                ResolvableApiException resolvable = (ResolvableApiException)ex;
                resolvable.StartResolutionForResult(MainActivity.CurrentActivity, 0x1);
            }

Answer 1

Hi SamoSimoni-6501,

Welcome to our Microsoft Q&A platform!

It's a known issue which has been reported on GitHub, you can triage it in the link: https://github.com/xamarin/Xamarin.Forms/projects/3#card-54694446

To handle this issue, here are some workarounds you can try.

If it's a single page, just set the MainPage in App.xaml.cs as follows.

MainPage = new MainPage(); // don't use "new NavigationPage()"  

If it's not a single page and you need to use NavigationPage to push new pages. Try to use Xamarin.Essentials: Preferences to record if permission requested.

Here is a simple demo you can refer to.

bool showNewPage = false;  
  
// button to get location(permission request pop up)  
private async void Button_Clicked(object sender, EventArgs e)  
{  
    Preferences.Set("permission_request_popup", true);  
    showNewPage = false;  
  
    Console.WriteLine("click");  
    try  
    {  
        var location = await Geolocation.GetLastKnownLocationAsync();  
  
        if (location != null)  
        {  
            Console.WriteLine($"Latitude: {location.Latitude}, Longitude: {location.Longitude}, Altitude: {location.Altitude}");  
        }  
    }  
    catch (Exception ex)  
    {  
        Console.WriteLine(ex.Message);  
    }  
  
}  
  
protected override void OnDisappearing()  
{  
    bool key = Preferences.Get("permission_request_popup", false);  
    if (key == true && showNewPage == false)  
        return;  
  
    base.OnDisappearing();  
    Console.WriteLine("Disappearing");  
}  
  
  
// button to push new page  
private async void Button_Clicked_1(object sender, EventArgs e)  
{  
    showNewPage = true;  
    await Navigation.PushAsync(new Page1());  
}  

Regards,
Kyle

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