Hide soft keyboard for editText focus/touch

I am trying to hide the soft keyboard from showing when an EditText either receives focus or a touch event. I want the EditText to be editable - there will be text in the EditText, so I want the EditText to respond to a touch event so the cursor is positioned, but I will have dedicated buttons for editing rather than using the soft keyboard. I can't get this to work - the soft keyboard seems to pop up on both focuschange and touch events.

I have reduced the code to the following:

AndroidMainifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="App1.App1" android:versionCode="1" android:versionName="1.0">
    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <application android:label="App1">
        <meta-data android:name="com.google.android.gms.version" 
               android:value="@integer/google_play_services_version" />
        <activity android:name="com.google.android.gms.ads.AdActivity" 
              android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" 
              android:theme="@android:style/Theme.Translucent" 
              android:windowSoftInputMode="stateAlwaysHidden" />
    </application>
</manifest>

Main.axml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/layout"
    android:descendantFocusability="beforeDescendants"
    android:focusableInTouchMode="true">

  <EditText xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:id="@+id/editText" />

  <com.google.android.gms.ads.AdView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/adView"
    ads:adSize="SMART_BANNER"
    ads:adUnitId="ca-app-pub-3940256099942544/6300978111">
  </com.google.android.gms.ads.AdView>

</LinearLayout>

MainActivity.cs:

namespace App1
{
    [Activity(Label = "App1", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            SetContentView(Resource.Layout.Main);

            LinearLayout layout = FindViewById<LinearLayout>(Resource.Id.layout);
            layout.FocusChange += FocusChange;

            EditText editText = FindViewById<EditText>(Resource.Id.editText);
            editText.FocusChange += FocusChange;
            editText.Touch += Touch;

            AdView adView = FindViewById<AdView>(Resource.Id.adView);
            var requestbuilder = new AdRequest.Builder();
            adView.LoadAd(requestbuilder.Build());
        }


        protected override void OnResume()
        {
            base.OnResume();

            AdView adView = FindViewById<AdView>(Resource.Id.adView);
            if (adView != null)
                adView.Resume();
        }


        private void FocusChange(object sender, View.FocusChangeEventArgs e)
        {
            InputMethodManager im = (InputMethodManager)GetSystemService(Context.InputMethodService);
            im.HideSoftInputFromWindow(Window.DecorView.WindowToken, Android.Views.InputMethods.HideSoftInputFlags.None);

            LinearLayout layout = FindViewById<LinearLayout>(Resource.Id.layout);
            im.HideSoftInputFromWindow(layout.WindowToken, Android.Views.InputMethods.HideSoftInputFlags.None);

            EditText editText = FindViewById<EditText>(Resource.Id.editText);
            im.HideSoftInputFromWindow(editText.WindowToken, Android.Views.InputMethods.HideSoftInputFlags.None);
        }



        private void Touch(object sender, View.TouchEventArgs e)
        {
            InputMethodManager im = (InputMethodManager)GetSystemService(Context.InputMethodService);
            im.HideSoftInputFromWindow(Window.DecorView.WindowToken, Android.Views.InputMethods.HideSoftInputFlags.None);

            LinearLayout layout = FindViewById<LinearLayout>(Resource.Id.layout);
            im.HideSoftInputFromWindow(layout.WindowToken, Android.Views.InputMethods.HideSoftInputFlags.None);

            EditText editText = FindViewById<EditText>(Resource.Id.editText);
            im.HideSoftInputFromWindow(editText.WindowToken, Android.Views.InputMethods.HideSoftInputFlags.None);

            (sender as EditText).OnTouchEvent(e.Event);
        }
    }
}

I have tried variations of many stackoverflow answers to hide the keyboard, but nothing works. Any help would be appreciated.

I ended up with a tricky solution, it works, but i don't like it.

I have a simple layout with a EditText and a Button. When you press the button I add a "*" to the EditText were the cursor is. You can manipulate the cursor with the finger and the soft keyboard never opens because when the EditText gets focus I hide the keyboard.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <EditText  android:id="@+id/myEditText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Text Here"/>
    <Button
        android:id="@+id/myButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Click Me!" />
</LinearLayout>

and the code in the Activity:

public class MainActivity : Activity, View.IOnTouchListener
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        SetContentView(Resource.Layout.Main);

        EditText edt = FindViewById<EditText>(Resource.Id.myEditText);
        edt.SetOnTouchListener(this);

        Button button = FindViewById<Button>(Resource.Id.myButton);
        button.Click += delegate { edt.Text = edt.Text.Insert(edt.SelectionStart, "*"); };
    }

    public bool OnTouch(View v, MotionEvent e)
    {
        // Pass the event to the edit text to have the blinking cursor.
        v.OnTouchEvent(e);
        // Hide the input.
        var imm = ((InputMethodManager)v.Context.GetSystemService(Context.InputMethodService));
        imm?.HideSoftInputFromWindow(v.WindowToken, HideSoftInputFlags.None);
        return true;
    }
}

Final result