How to consistently set EditText Selected Underline Color Programmatically

So the solution for me was to go pure AppCompat

So I'm adding an AppCompatEditText to the TextInputLayout

protected EditText EditText => Control.EditText;protected override TextInputLayout CreateNativeControl(){    var textInputLayout = new TextInputLayout(Context);    var editText = new AppCompatEditText(Context)    {        SupportBackgroundTintList = ColorStateList.ValueOf(GetPlaceholderColor())    };    textInputLayout.AddView(editText);    return textInputLayout;}

Then from there I was able to set the underline consistently with this.

private void ControlOnFocusChange(object sender, FocusChangeEventArgs args){    _hasFocus = args.HasFocus;    SetUnderlineColor(_hasFocus ?  GetActivePlaceholderColor(): GetPlaceholderColor());} private void SetUnderlineColor(AColor color){    var element = (ITintableBackgroundView)EditText;    element.SupportBackgroundTintList = ColorStateList.ValueOf(color);}

full source code here.

Modify your code in XfxEntryRendererDroid ControlOnFocusChange method like this :

private void ControlOnFocusChange(object sender, FocusChangeEventArgs args){    _hasFocus = args.HasFocus;    if (_hasFocus)    {        ...           EditText.PostDelayed(() =>            {                //Add the following code                SetUnderlineColor(GetActivePlaceholderColor());                EditText.RequestFocus();                manager.ShowSoftInput(EditText, 0);            },            0);//Change it to 0    }    ...}

Effect.

Why don't you change the tint colour at runtime using this (May be in your text changed event):

ViewCompat.SetBackgroundTintList(_YourView , ColorStateList.ValueOf(Color.ParseColor(Resources.GetString(Resource.Color.blueLine))));

Anyways Goodluck!