以編程方式創建ListView

Question

嗨，我是Android新手。誰能告訴我請什麼錯用下面的代碼：

public class ListApp extends Activity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     TextView lText = new TextView(this); 
     lText.setId(0);  

     ListView lView = new ListView(this); 
     String[] lStr = new String[]{"AA","BB", "CC"}; 
     ArrayAdapter lAdap = new ArrayAdapter(this,lText.getId(),lStr); 
     lView.setAdapter(lAdap); 
     lView.setFocusableInTouchMode(true);   

     setContentView(lView); 
    } 
} 

Answer 1

public class ListApp extends ListActivity 

Answer 2

做一個佈局XML文件的列表視圖，並使用findViewById來設置它的適配器後，第一個內容視圖設置爲您佈局

Answer 3

試試這個..

將以下代碼粘貼到list_item.xml中。

<?xml version="1.0" encoding="utf-8"?> 
<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:padding="10dp" 
    android:textSize="16sp" android:textColor="#ffffff" android:textStyle="bold" android:background="@drawable/border_cell"> 
</TextView> 

這裏是活動類....

public class UsersListActivity extends ListActivity{  
     @Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState);   
      String[] statesList = {"listItem 1", "listItem 2", "listItem 3"}; 
      setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, 
        statesList)); 
      ListView lv = getListView(); 

      lv.setOnItemClickListener(new OnItemClickListener() { 
       public void onItemClick(AdapterView<?> parent, View view, 
         int position, long id) { 


        Toast.makeText(getApplicationContext(), 
        "You selected : "+((TextView) view).getText(), Toast.LENGTH_SHORT).show(); 
    } 
      }); 

     } 

} 

Answer 4

最佳實踐是分離視圖（XML佈局）和控制器（活性）。

如果你不想這樣，儘量把

setContentView(lView); 

在的onCreate

Answer 5

開始這裏的，不需要你寫任何XML佈局的解決方案。它在可能的情況下使用標準的android佈局，並且不需要通貨膨脹：

Dialog dialog = new Dialog(this); 
AlertDialog.Builder builder = new AlertDialog.Builder(this); 
builder.setTitle("Select Color Mode"); 

ListView modeList = new ListView(this); 
String[] stringArray = new String[] { "Bright Mode", "Normal Mode" }; 
ArrayAdapter<String> modeAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1, stringArray); 
modeList.setAdapter(modeAdapter); 

builder.setView(modeList); 
dialog = builder.create();