如何正確添加addTextChangedListener到listView？

Question

我喜歡addTextChangedListener添加到我的ListView但之後運行它，它不會顯示在屏幕anythings，只是一個空白屏幕。該logcat中還給出了什麼，但只顯示了一個標籤是「ActivityThread.performLaunchAcitvity（ActivityThread $ ActivityClientRecord，意圖）線：2205」，其下方顯示「未找到源」一個按鈕（編輯源查找路徑）.. 我已經嘗試了一些辦法，但不能找到一種方法，使其工作至今..

這裏是在MainActivity：

public class MainActivity extends ListActivity { 

ListView lv; 
EditText inputSearch; 
DefaultHttpClient httpclient; 
HttpPost httppost; 
HttpResponse response; 
InputStream is; 
BufferedReader reader; 
StringBuilder sb; 
String line,result; 
String[] people; 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main);   

    getList(); 

    lv= (ListView) findViewById(R.id.list_view); 
    inputSearch= (EditText) findViewById(R.id.inputSearch); 

    inputSearch.addTextChangedListener(new TextWatcher() { 
     public void afterTextChanged(Editable s) { 
      if(s.length()==0){ 
       lv.clearTextFilter(); 
      } 
     } 
     public void beforeTextChanged(CharSequence s, int start, int count, int after){ 
     } 
     public void onTextChanged(CharSequence s, int start, int before, int count) 
     { 
      lv.setTextFilterEnabled(true); 
      lv.setFilterText(s.toString()); 
     } 

    }); 
} 

public void getList(){ 
    new Thread(){ 
     public void run(){ 
      try{ 
       httpclient = new DefaultHttpClient(); 
       httppost = new HttpPost("http://www.kryptoquest.com/testing/testList.php"); 
       response = httpclient.execute(httppost); 
       is = response.getEntity().getContent(); 
      }catch(Exception e){ 
       Log.e("log_tag", "Error:"+e.toString()); 
      } 

      //convert response to string 
      try{ 
        reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8); 
        sb = new StringBuilder(); 
        line = null; 
        while ((line = reader.readLine()) != null) { 

          sb.append(line + "\n"); 

        } 
        Log.d("test",sb.toString()); 
        is.close(); 

        result = sb.toString(); 

        people = result.split("[*]"); 

        runOnUiThread(new Runnable() 
        { 
         public void run(){ 
          ArrayAdapter<String> list = new ArrayAdapter<String>(MainActivity.this,R.layout.list_item, R.id.user_name,people); 
          lv.setAdapter(list); 
         } 
        }); 


      }catch(Exception e){ 
        Log.e("log_tag", "Error converting result "+e.toString()); 
      } 
     } 
    }.start(); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.activity_main, menu); 
    return true; 
} 
} 

activity_main.xml中：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:orientation="vertical"> 

<!--Editext for Search --> 
<EditText android:id="@+id/inputSearch" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:hint="Search.." 
    android:inputType="textVisiblePassword"/> 

<!--List View --> 
<ListView 
    android:id="@+id/list_view" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" /> 

</LinearLayout> 

list_item.xml：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" > 

<!--Single ListItem --> 

<!--User Name --> 
<TextView android:id="@+id/user_name" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:padding="10dip" 
    android:textSize="16dip" 
    android:textStyle="bold"/> 

</LinearLayout> 

此外，我在其Manifest中添加了使用權限android：name =「android.permission.INTERNET」>。

在此先感謝。

Answer 1

從你的logcat：

Your content must have a ListView whose id attribute is 'android.R.id.list' 

這意味着改變你的ListView的id這樣：

<!--List View --> 
<ListView 
    android:id="@android:id/list" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" /> 

ListActivities需要與此完全相同的ID佈局一個ListView。