檢索下拉微調xamarin的Andriod

檢索下拉微調您好,,我有微調全額SQLite數據庫我希望能在這搜索我怎麼能做到這一點我嘗試使用自動完成文本，但效果並不好這個我spinner.aXml檢索下拉微調xamarin的Andriod

<Spinner 
     android:layout_width="match_parent" 
     android:layout_height="35dp" 
     android:id="@+id/SpinnerHotel" 
     android:paddingLeft="10dp" 
     android:background="@drawable/Spinner_Style" 
     android:spinnerMode="dropdown" 
     android:gravity="center" 
     android:visibility="visible" 
     android:layout_marginRight="10dp" 
     android:layout_marginTop="15dp" 
     android:layout_marginLeft="15dp" /> 


and text_View.axml 

<?xml version="1.0" encoding="utf-8"?> 
<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:paddingLeft="20dp" 
         android:id="@+id/autoCompleteTextView1" 
    android:textColor="#68767A" 
    android:text="Select a Hotel .. " 
    android:paddingTop="5dp" 
    android:paddingBottom="5dp" 
    android:textSize="18dp" />

，這我的活動

async protected override void OnCreate(Bundle savedInstanceState) 
    { 
     base.OnCreate(savedInstanceState); 
     SetContentView(Resource.Layout.GoShow_layout); 

     Agent = FindViewById<Spinner>(Resource.Id.SpinnerAgentt); 

     List<string> my_array = new List<string>(); 
      my_array = await login.Get_Hotel(); 
     ArrayAdapter<string> adapter = new ArrayAdapter<string>(this, Resource.Layout.Text_View, my_array); 
     adapter.SetDropDownViewResource(Resource.Layout.Text_View); 
     Hotel.Adapter = adapter; 
     Hotel.ItemSelected += Hotel_ItemSelected; 




    } 

private void Agent_ItemSelected(object sender, AdapterView.ItemSelectedEventArgs e) 
{ 
    var Spinner = sender as Spinner; 
    string Agentt = Spinner.GetItemAtPosition(e.Position).ToString(); 

    Toast.MakeText(this, Agentt , ToastLength.Short).Show(); 
}

來源

2017-03-05 Esraa

我認爲你必須與微調結合AutoCompleteTextView，喜歡這裏Combine Spinner and AutoCompleteTextView

來源

2017-03-05 13:50:08

System.NullReferenceException：對象引用未設置爲對象的實例。使用它時獲取此erroractv = FindViewById （Resource.Id.autoCompleteTextView1）; actv.Adapter = adapter; – Esraa

看看這個示例https://developer.xamarin.com/recipes/android/controls/autocomplete_text_view/add_an_autocomplete_text_input/ –

謝謝我遵循示例，我做到了 – Esraa

檢索下拉微調xamarin的Andriod

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