如何在Xamarin表单中自定义AutoCompleteTextView

Question

我正在尝试定制AutoCompleteTextView的外观，我需要一个四舍五入的条目

到目前为止，我已经尝试过了

 [assembly: ExportRenderer(typeof(AutoCompleteViewv3), 
 typeof(AutoCompleteViewRendererv3))]
namespace PredictiveList.Droid
{
 public class AutoCompleteViewRendererv3  : ViewRenderer<AutoCompleteViewv3, 
  AutoCompleteTextView>
{
    static string[] COUNTRIES = new string[] {
  "Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra",
  "Angola", "Anguilla", "Antarctica", "Antigua and Barbuda", };

    public AutoCompleteViewRendererv3(Android.Content.Context context) : base(context)
    {

    }

    protected override void OnElementChanged(ElementChangedEventArgs<AutoCompleteViewv3> e)
    {
        base.OnElementChanged(e);

        if (e.OldElement != null || this.Element == null)
            return;

        // var textInputLayout = (TextInputLayout)LayoutInflater.From(Context).Inflate(Resource.Layout.TextInputLayout, null);

        var autoComplete = new AutoCompleteTextView(Context);
        autoComplete.SetBackgroundResource(Resource.Drawable.rounded_cornersrev);


        //var autoCompleteTextView = (AutoCompleteTextView)LayoutInflater.From(Context).Inflate(Resource.Layout.TextInputLayout, null);
        //var  txtSearch = (AutoCompleteTextView)FindViewById(Resource.Id.autocomplete_country);
        // TextView name = (TextView)Android.Views.View.FindViewById(Resource.Id.txt_searchhh);
        AutoCompleteTextView textView = new AutoCompleteTextView(Context);
        textView = FindViewById<AutoCompleteTextView>(Resource.Id.autocomplete_country);
        var adapter = new ArrayAdapter<String>(Context, Resource.Layout.list_item, COUNTRIES);
        autoComplete.Adapter = adapter;
        SetNativeControl(autoComplete);
    }

    // Use the control here.
    protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
    {
        base.OnElementPropertyChanged(sender, e);

        if (this.Element == null || this.Control == null)
            return;

        // variable this.Control is the AutoCompleteTextView, so you an manipulate it.
    }
}

}

我正在尝试以Xamarin的形式实现这一点，如果有人有其他想法，请建议

​

​

另外，请帮助我如何删除条目的下划线

Answer 1

试一下这个方法：

AutoCompleteTextView textView = new AutoCompleteTextView(textView =FindViewById<AutoCompleteTextView>(Resource.Id.autocomplete_country);

textView.Background = null; // Set background be null

​

​

​

​