Assigning the view in Xamarin application

[CodeAddiction]

I have the pin view created, assigned an Id, and is present in resource.cs

The problem is that I am trying to reference the view in my settings activity so I can use the onDataEntered method to get the values, but my reference variable is always null. Even though using breakpoints tells me that the view I have referenced is not null.

`using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.Gms.Ads;
using Android.Preferences;
using Com.Goodiebag.Pinview;
using static Com.Goodiebag.Pinview.Pinview;

namespace JourneyAssistant
{
[Activity(Label = "Settings")]
public class SettingsActivity : Activity, IPinViewEventListener
{
//Variable declarations
AdView mAdView;
ISharedPreferences preferences;
ISharedPreferencesEditor editor;
Switch hideAddress;
Button saveBTN;
EditText streetName;
EditText area;
EditText town;
EditText county;
EditText postcode;
Pinview pinView;
string pinViewPin;
public string userPin;
bool hideAddressStatus;

    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        SetContentView(Resource.Layout.activity_settings);

        //Initialise Xamarin Essentials API
        Xamarin.Essentials.Platform.Init(this, savedInstanceState);

        pinView = new Pinview(this);

        streetName = FindViewById<EditText>(Resource.Id.streetName);
        area = FindViewById<EditText>(Resource.Id.area);
        town = FindViewById<EditText>(Resource.Id.town);
        county = FindViewById<EditText>(Resource.Id.county);
        postcode = FindViewById<EditText>(Resource.Id.postcode);
        saveBTN = FindViewById<Button>(Resource.Id.saveBTN);
        mAdView = FindViewById<AdView>(Resource.Id.adView);
        hideAddress = FindViewById<Switch>(Resource.Id.hideAddress);
        pinView = FindViewById<Pinview>(Resource.Id.pinEntry);

        EditText[] editTexts = new EditText[] { streetName, area, town, county, postcode };

        MobileAds.Initialize(this, "ca-app-pub-5407142743467927~1824688848");
        AdRequest adRequest = new AdRequest.Builder().Build();
        mAdView.LoadAd(adRequest);

        preferences = PreferenceManager.GetDefaultSharedPreferences(this);
        hideAddressStatus = preferences.GetBoolean("hideAddress", false);
        userPin = preferences.GetString("userPin", "Pin not set");
        
        if (hideAddressStatus == true)
        {
            pinView.SetPinViewEventListener(this);
            hideAddress.Checked = true;
            streetName.Text = preferences.GetString("streetName", "");
            area.Text = preferences.GetString("area", "");
            town.Text = preferences.GetString("town", "");
            county.Text = preferences.GetString("county", "");
            postcode.Text = preferences.GetString("postcode", "");
            streetName.Visibility = ViewStates.Invisible;
            area.Visibility = ViewStates.Invisible;
            town.Visibility = ViewStates.Invisible;
            county.Visibility = ViewStates.Invisible;
            postcode.Visibility = ViewStates.Invisible;
        }
        else
        {
            pinView.SetPinViewEventListener(this);
            hideAddress.Checked = false;
            streetName.Text = preferences.GetString("streetName", "");
            area.Text = preferences.GetString("area", "");
            town.Text = preferences.GetString("town", "");
            county.Text = preferences.GetString("county", "");
            postcode.Text = preferences.GetString("postcode", "");
            streetName.Visibility = ViewStates.Visible;
            area.Visibility = ViewStates.Visible;
            town.Visibility = ViewStates.Visible;
            county.Visibility = ViewStates.Visible;
            postcode.Visibility = ViewStates.Visible;

        };

        hideAddress.CheckedChange += (s, e) =>
        {
            if (e.IsChecked)
            {
                if (pinViewPin == "")
                {
                    Toast.MakeText(this, "Please set a PIN",ToastLength.Short).Show();
                }
                hideAddressStatus = true;
                streetName.Visibility = ViewStates.Invisible;
                area.Visibility = ViewStates.Invisible;
                town.Visibility = ViewStates.Invisible;
                county.Visibility = ViewStates.Invisible;
                postcode.Visibility = ViewStates.Invisible;
            }
            else
            {
                hideAddressStatus = false;
                streetName.Visibility = ViewStates.Visible;
                area.Visibility = ViewStates.Visible;
                town.Visibility = ViewStates.Visible;
                county.Visibility = ViewStates.Visible;
                postcode.Visibility = ViewStates.Visible;
            }
        };

        saveBTN.Click += delegate
        {
            foreach (EditText e in editTexts)
            {
                if (e.Text == "")
                {
                    Toast.MakeText(this, "All address fields are required", ToastLength.Short).Show();
                    break;
                }
                    
                
            }
            saveSettings();

        };

    }

    public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Android.Content.PM.Permission[] grantResults)
    {
        Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);

        base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
    }

    public void saveSettings()
    {
        editor = preferences.Edit();
        editor.PutString("streetName", streetName.Text);
        editor.PutString("area", area.Text);
        editor.PutString("town", town.Text);
        editor.PutString("county", county.Text);
        editor.PutString("postcode", postcode.Text);
        editor.PutBoolean("hideAddress", hideAddressStatus);
        editor.Commit();
        Toast.MakeText(this, "Settings saved", ToastLength.Short).Show();
    }

    public void OnDataEntered(Pinview pinView, bool fromUser)
    {
        Toast.MakeText(this, "" + pinView.Value, ToastLength.Short).Show();
    }
}

}`

Does anybody know whats going on please?