AutoCompleteTextView沒有表現出任何下拉項

我的XML：AutoCompleteTextView沒有表現出任何下拉項

<AutoCompleteTextView 
     android:id="@+id/searchAutoCompleteTextView_feed" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:clickable="true" 
     android:completionThreshold="2" 
     android:hint="@string/search" />

我的Java代碼：

AutoCompleteTextView eT = (AutoCompleteTextView)findViewById(R.id.searchAutoCompleteTextView_feed); 
eT.addTextChangedListener(this); 
String[] sa = new String[]{"apple", "mango", "banana", "apple mango", "mango banana"}; 
ArrayAdapter<String> aAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line, sa); 
eT.setAdapter(aAdapter);

這不是工作atall ....我的意思是它只是工作就像一個EditTextView。我在哪裏錯了？

完整代碼：

public class FeedListViewActivity extends ListActivity implements TextWatcher{ 


    private AutoCompleteTextView eT; 

    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.feed); 

     eT = (AutoCompleteTextView) findViewById(R.id.searchAutoCompleteTextView_feed); 
     eT.addTextChangedListener(this); 

        Thread thread = new Thread(null, loadMoreListItems); 
        thread.start(); 
    } 

    private Runnable returnRes = new Runnable() { 
     public void run() { 

      //code for other purposes 
     } 
    }; 

    private Runnable loadMoreListItems = new Runnable() { 
     public void run() { 
      getProductNames(); 

      // Done! now continue on the UI thread 
      runOnUiThread(returnRes); 
     } 
    }; 

    protected void getProductNames() { 

      String[] sa = new String[]{"apple", "mango", "banana", "apple mango", "mango banana"}; 

      ArrayAdapter<String> aAdapter = new ArrayAdapter<String>(getApplicationContext(), 
        android.R.layout.simple_dropdown_item_1line, sa); 
      eT.setAdapter(aAdapter); 

    } 

    public void afterTextChanged(Editable s) { 
     // TODO Auto-generated method stub 

    } 

    public void beforeTextChanged(CharSequence s, int start, int count, 
      int after) { 
     // TODO Auto-generated method stub 

    } 

    public void onTextChanged(CharSequence s, int start, int before, int count) { 
     // TODO Auto-generated method stub 

    } 
}

來源

2012-05-25 Housefly

根本不工作？你輸入了多少個字符來檢查？ –

您使用Threshold作爲2，因此它會在您輸入2個字符後觸發 – Venky

是的，我總是打字超過2 ...它沒有顯示任何下拉項目 – Housefly

我剛纔看到您的其他問題。一段時間以來，我一直在爲自動完成而苦苦掙扎，並且我幾乎恢復了您下載所有關鍵字的新實現，直到我終於將其實現。我所做的是;

//In the onCreate 
//The suggestArray is just a static array with a few keywords 
this.suggestAdapter = new ArrayAdapter<String>(this, this.suggestionsView, suggestArray); 
//The setNotifyOnChange informs all views attached to the adapter to update themselves 
//if the adapter is changed 
this.suggestAdapter.setNotifyOnChange(true);

在我textwatcher的onTextChanged方法，我得到的建議使用的AsyncTask

//suggestsThread is an AsyncTask object 
suggestsThread.cancel(true); 
suggestsThread = new WertAgentThread(); 
suggestsThread.execute(s.toString());

在的AsyncTask的onPostExecute然後我更新autocompletetextview

//suggestions is the result of the http request with the suggestions 
this.suggestAdapter = new ArrayAdapter<String>(this, R.layout.suggestions, suggestions); 
this.suggestions.setAdapter(this.suggestAdapter); 
//notifydatasetchanged forces the dropdown to be shown. 
this.suggestAdapter.notifyDataSetChanged();

見setNotifyOnChange和notifyDataSetChanged瞭解更多信息

來源

2012-05-30 11:06:56 Awemo

來檢查看來你還沒有完全理解notifyDataSetChanged（）方法的概念。您正在onPostExecute方法中創建一個ArrayAdapter的新實例，並將其設置爲適配器。在你的例子中，notifyDataSetChanged（）方法調用是無用的。 –

AutoCompleteTextView eT = (AutoCompleteTextView)findViewById(R.id.searchAutoCompleteTextView_feed); 
// eT.addTextChangedListener(this); 
    String[] sa = new String[]{"apple", "mango", "banana", "apple mango", "mango banana"}; 
    ArrayAdapter<String> aAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line, sa); 
    eT.setAdapter(aAdapter);

其工作et.addtext行看到這個人之前只是評論...

來源

2012-05-25 11:29:28 jigspatel

是啊我試過，甚至....它沒有爲我工作 – Housefly

其工作在我的android 2.3.1版本完美.. – jigspatel

確實版本事宜autocompletetextview ???我知道...我是一些較低的API ...需要通過更改 – Housefly

這是我的項目中的一個片段。我認爲，從服務獲得數據後，您所要做的就是：

清除以前的數據。
清除以前的適配器值。
然後使用add（）或addAll（）方法將值添加到數據列表。

通過在適配器上調用notifyDataSetChanged（）來通知更改的數據。

@Override 
public void onGetPatient(List<PatientSearchModel> patientSearchModelList) { 

//here we got the raw data traverse it to get the filtered names data for the suggestions 

stringArrayListPatients.clear(); 
stringArrayAdapterPatient.clear(); 
for (PatientSearchModel patientSearchModel:patientSearchModelList){ 

    if (patientSearchModel.getFullName()!=null){ 

     stringArrayListPatients.add(patientSearchModel.getFullName()); 

    } 

} 

//update the array adapter for patient search 
stringArrayAdapterPatient.addAll(stringArrayListPatients); 
stringArrayAdapterPatient.notifyDataSetChanged();

}

但在此之前這一切確保您已連接適配器自動完成TextView的，如果不這樣做如下：

ArrayAdapter<String> stringArrayAdapterPatient= new ArrayAdapter<String>(getActivity(),android.support.v7.appcompat.R.layout.select_dialog_item_material,stringArrayListPatients); 

completeTextViewPatient.setAdapter(stringArrayAdapterPatient);

來源

2017-01-23 12:43:56

AutoCompleteTextView沒有表現出任何下拉項

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