ListView基本示例不工作

Question

我想在我的書中給出的列表視圖示例之一，但即使我一直按行代碼行方法listView.setOnItemClickListener（this），不起作用。下面是代碼，

public class ViagemListActivity extends ListActivity implements OnItemClickListener { 

    protected void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 

     setListAdapter(new ArrayAdapter<String>(this, 
       android.R.layout.simple_list_item_1, listarViagens())); 
       ListView listView = getListView(); 
       listView.setOnItemClickListener(this); 
    } 

    private List<String> listarViagens() { 
     return Arrays.asList("São Paulo", "Rio de Janeiro", "Santa Catarina"); 

    } 

    @Override 
    public void onItemClick(AdapterViewCompat<?> parent, View view, int position, 
      long id) { 

      TextView textView = (TextView) view; 
      String mensagem = "Viagem selecionada: " + textView.getText(); 
      Toast.makeText(getApplicationContext(), mensagem, 
      Toast.LENGTH_SHORT).show(); 
      startActivity(new Intent(this, GastoListActivity.class)); 
    } 
} 

請幫幫忙，

Answer 1

的問題是ListActivity基類不使用OnItemClickListener指示按下了什麼（所以你implements OnItemClickListener和onItemClick覆蓋沒有任何效果）。相反，您需要覆蓋onListItemClick()（請參閱文檔：http://developer.android.com/reference/android/app/ListActivity.html）