我需要将选定的项目从我的微调框中移除,但出现上述错误,我不知道为什么。错误:'Spinner'不包含getSelectedItem的定义'...'
因此,我期望在不调用微调控件的事件处理程序的情况下获取微调控件选定的项目,如果可能的话,因为我需要在按钮点击时使用它。
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the "main" layout resource
SetContentView (Resource.Layout.Main);
Button bt_ok = FindViewById<Button>(Resource.Id.bt_ok);
Spinner spinner = (Spinner)FindViewById<Spinner>(Resource.Id.dd_spinner);
//
//getSelectedItem does not contain a definition!!!
//
String spinner_text = spinner.getSelectedItem().toString();
//
//Do I need this?
//
spinner.ItemSelected += new EventHandler<AdapterView.ItemSelectedEventArgs>(spinner_ItemSelected);
var adapter = ArrayAdapter.CreateFromResource(
this, Resource.Array.planet_array, global::Android.Resource.Layout.SimpleSpinnerItem);
adapter.SetDropDownViewResource(global::Android.Resource.Layout.SimpleSpinnerDropDownItem);
spinner.Adapter = adapter;
bt_ok.Click += delegate
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.SetTitle("Confirm");
//
//I need the value here!!!
//
builder.SetMessage(new Confirm().Choice(spinner_text));
builder.SetCancelable(true);
builder.SetPositiveButton("Yes", delegate { });
builder.Show();
};
}
您应该考虑与[Xamarin文档】熟悉自己(https://developer.xamarin.com //)。扫描API文档可以帮助您找出Android Java API和Xamarin C#API之间的这些差异。 –