自定义微调器和从右到左的语言：模拟器上的输出问题 [英] Custom spinner and right to left language: problem with output on emulator

问题描述

我有这些，但在运行程序后，我在仿真器上看不到任何输出。

I have these, but after running the program, I do not see any output on emulator.

MySpinnerAdapter.cs
namespace spinnerTest
{
    public class MySpinnerAdapter : ArrayAdapter<String>
    {
        Typeface font = Typeface.CreateFromAsset(Application.Context.Assets, "fonts/MYFONT.TTF");
        public MySpinnerAdapter(Context context, int resource, String[] items)
            : base(context, resource, items)
        {

        }
        public override View GetView(int position, View convertView, ViewGroup parent)
        {
            TextView view = (TextView)GetView(position, convertView, parent);
            view.SetTypeface(font, TypefaceStyle.Normal);
            return view;
        }

        public override View GetDropDownView(int position, View convertView, ViewGroup parent)
        {
            TextView view = (TextView)GetDropDownView(position, convertView, parent);
            view.SetTypeface(font, TypefaceStyle.Normal);
            return view;
        }
    }
}

textview_with_padding
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    style="?android:attr/spinnerItemStyle"
    android:singleLine="true"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:ellipsize="marquee" />

Main.axml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <Spinner
        android:id="@+id/spinner2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

MainActivity.cs
namespace spinnerTest
{
    [Activity(Label = "spinnerTest", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView(Resource.Layout.Main);
            String[] spinnerItems = new String[]{
                "Aa",
                "Bbb",
                "Cccc",
                "Ddddd",
                "Ee",
            };

            Spinner SpinnerWithPadding = (Spinner)FindViewById(Resource.Id.spinner2);
            ArrayAdapter<String> spinnerArrayAdapter = new MySpinnerAdapter(this, Resource.Layout.textview_with_padding, spinnerItems);
            spinnerArrayAdapter.SetDropDownViewResource(Resource.Layout.textview_with_padding);
            SpinnerWithPadding.Adapter = spinnerArrayAdapter;
        }
    }
}

我尝试了什么：



我没有任何错误，但我在模拟器上没有输出。

What I have tried:

I do not have any error but I do not have output on Emulator.

推荐答案

我发现：

我的问题出现在MySpinnerAdapter.cs中：

我没有使用基础GetView（base.GetView）和GetDropDownView（base.GetDropDownView）。

I found:
My problem was in MySpinnerAdapter.cs:
I had not used base for GetView (base.GetView) and GetDropDownView (base.GetDropDownView).

TextView view = (TextView)base.GetView(position, convertView, parent);
TextView view = (TextView)base.GetDropDownView(position, convertView, parent);

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