导航抽屉中的setOnItemClickListener（）不起作用？

Question

我的.java代码：

public class welcome extends Activity 
{ 
    Button button1; 
    private DrawerLayout mDrawerLayout; 

    private ListView mDrawerList; 
    private ActionBarDrawerToggle mDrawerToggle; 

    private String mTitle = ""; 

    @SuppressLint("NewApi") 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.welcome); 

     mTitle = "JAVATECHIG.COM"; 
     getActionBar().setTitle(mTitle); 

     // Getting reference to the DrawerLayout 
     mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 

     mDrawerList = (ListView) findViewById(R.id.drawer_list); 
     mDrawerList.setClickable(true); 
     mDrawerList.setTextFilterEnabled(true); 
     // Getting reference to the ActionBarDrawerToggle 
     mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, 
       R.drawable.ic_drawer, R.string.drawer_open, 
       R.string.drawer_close) { 

      public void onDrawerClosed(View view) { 
       getActionBar().setTitle(mTitle); 
       invalidateOptionsMenu(); 

      } 

      /** Called when a drawer is opened */ 
      public void onDrawerOpened(View drawerView) { 
       getActionBar().setTitle("JAVATECHIG.COM"); 
       Toast.makeText(getApplicationContext(), "Inside onDrawerOpened...", Toast.LENGTH_SHORT).show(); 
       invalidateOptionsMenu(); 
      } 

     }; 

     // Setting DrawerToggle on DrawerLayout 
     mDrawerLayout.setDrawerListener(mDrawerToggle); 

     mDrawerList.setOnItemClickListener(new OnItemClickListener() { 

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

       // Getting an array of rivers 
       String[] menuItems = getResources().getStringArray(R.array.menus); 
       Toast.makeText(getApplicationContext(), "Inside ClickListener...", Toast.LENGTH_SHORT).show(); 
       // Currently selected river 
       mTitle = menuItems[position]; 

       // Creating a fragment object 
       WebViewFragment rFragment = new WebViewFragment(); 

       // Passing selected item information to fragment 
       Bundle data = new Bundle(); 
       data.putInt("position", position); 
       data.putString("url", getUrl(position)); 
       rFragment.setArguments(data); 


       // Getting reference to the FragmentManager 
       FragmentManager fragmentManager = getFragmentManager(); 

       // Creating a fragment transaction 
       FragmentTransaction ft = fragmentManager.beginTransaction(); 

       // Adding a fragment to the fragment transaction 
       ft.replace(R.id.content_frame, rFragment); 

       // Committing the transaction 
       ft.commit(); 

       // Closing the drawer 
       mDrawerLayout.closeDrawer(mDrawerList); 

      } 
     }); 

     // Creating an ArrayAdapter to add items to the listview mDrawerList 
     ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(), 
       R.layout.drawer_list_item, getResources().getStringArray(R.array.menus)); 

     // Setting the adapter on mDrawerList 
     mDrawerList.setAdapter(adapter); 
     Toast.makeText(getApplicationContext(), "After ArrayAdapter decraration...", Toast.LENGTH_SHORT).show(); 
     // Enabling Home button 
     getActionBar().setHomeButtonEnabled(true); 

     // Enabling Up navigation 
     getActionBar().setDisplayHomeAsUpEnabled(true); 

     // Setting item click listener for the listview mDrawerList 

    } 

    protected String getUrl(int position) { 
     switch (position) { 
     case 0: 
      return "http://javatechig.com"; 
     case 1: 
      return "http://javatechig.com/category/android/"; 
     case 2: 
      return "http://javatechig.com/category/blackberry/"; 
     case 3: 
      return "http://javatechig.com/category/j2me/"; 
     case 4: 
      return "http://javatechig.com/category/sencha-touch/"; 
     case 5: 
      return "http://javatechig.com/category/phonegap/"; 
     case 6: 
      return "http://javatechig.com/category/java/"; 
     default: 
      return "http://javatechig.com"; 
     } 
    } 

    @Override 
    protected void onPostCreate(Bundle savedInstanceState) { 
     super.onPostCreate(savedInstanceState); 
     mDrawerToggle.syncState(); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     if (mDrawerToggle.onOptionsItemSelected(item)) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

    /** Called whenever we call invalidateOptionsMenu() */ 
    @Override 
    public boolean onPrepareOptionsMenu(Menu menu) { 
     // If the drawer is open, hide action items related to the content view 
     boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); 

     menu.findItem(R.id.action_settings).setVisible(!drawerOpen); 
     return super.onPrepareOptionsMenu(menu); 
    } 

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

而且我的XML代码：

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/drawer_layout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 

    <!-- The main content view --> 

    <FrameLayout 
     android:id="@+id/content_frame" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 
    <!-- The navigation drawer --> 

    <ListView 
     android:id="@+id/drawer_list" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:background="#111" 
     android:choiceMode="singleChoice" 
     android:divider="@android:color/transparent" 
     android:dividerHeight="0dp" 
     android:focusable="false" 
     android:focusableInTouchMode="false" 
     android:descendantFocusability="blocksDescendants" 
     /> 
</android.support.v4.widget.DrawerLayout> 

WebViewFragement.java代码：

public class WebViewFragment extends Fragment { 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 

     // Retrieving the currently selected item number 
     int position = getArguments().getInt("position"); 

     String url = getArguments().getString("url"); 

     // List of rivers 
     String[] menus = getResources().getStringArray(R.array.menus); 

     // Creating view corresponding to the fragment 
     View v = inflater.inflate(R.layout.fragment_layout, container, false); 

     // Updating the action bar title 
     getActivity().getActionBar().setTitle(menus[position]); 

     //Initializing and loading url in webview 
     //WebView webView = (WebView)v.findViewById(R.id.webView); 
     //webView.getSettings().setJavaScriptEnabled(true); 
     //webView.loadUrl(url); 
     Toast.makeText(getActivity(),position+" ... "+url,Toast.LENGTH_SHORT).show(); 
     return v; 
    } 
} 

。

。

我的问题是每当我运行这个代码，并点击任何侧面菜单选项，它不显示任何东西。意味着它不会进入setOnItemClickListener（）。 我已经尝试了所有可能的解决方案张贴在这个表单中，但是，这些都不起作用。 请帮忙。

Answer 1

的错误可能是在这一行mDrawerList.setOnItemClickListener(new OnItemClickListener())，而不是实施onItemClickListener实施list_item.setOnItemClickListener(new DrawerItemClickListener());