当android动作栏活动开始时，片段不工作？

Question

你好，我是落实在行动酒吧活动列表视图时，第一次被启动，但它不是工作

我曾尝试下面的代码，但它不是为我工作我刚开始的学习动作条

MainActivity.java

public class MainActivity extends ActionBarActivity implements 
     NavigationDrawerFragment.NavigationDrawerCallbacks { 

    /** 
    * Fragment managing the behaviors, interactions and presentation of the 
    * navigation drawer. 
    */ 
    private NavigationDrawerFragment mNavigationDrawerFragment; 

    /** 
    * Used to store the last screen title. For use in 
    * {@link #restoreActionBar()}. 
    */ 
    private CharSequence mTitle; 

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

     mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager() 
       .findFragmentById(R.id.navigation_drawer); 
     mTitle = getTitle(); 

     // Set up the drawer. 
     mNavigationDrawerFragment.setUp(R.id.navigation_drawer, 
       (DrawerLayout) findViewById(R.id.drawer_layout)); 

     Fragment fr=new FragmentOne(); 
     FragmentManager fragmentManager = getSupportFragmentManager(); 
     fragmentManager .beginTransaction().replace(R.id.container, fr); 

    } 

    @Override 
    public void onNavigationDrawerItemSelected(int position) { 
     // update the main content by replacing fragments 



    } 


    public void restoreActionBar() { 


     ActionBar actionBar = getSupportActionBar(); 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); 
     actionBar.setDisplayShowTitleEnabled(true); 
     actionBar.setTitle(mTitle); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     if (!mNavigationDrawerFragment.isDrawerOpen()) { 
      // Only show items in the action bar relevant to this screen 
      // if the drawer is not showing. Otherwise, let the drawer 
      // decide what to show in the action bar. 
      getMenuInflater().inflate(R.menu.main, menu); 
      restoreActionBar(); 
      return true; 
     } 
     return super.onCreateOptionsMenu(menu); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

    public static class FragmentOne extends Fragment { 


      private String[] mStrings={ 
        "http://androidexample.com/media/webservice/LazyListView_images/image0.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image1.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image2.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image3.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image4.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image5.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image6.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image7.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image8.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image9.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image10.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image0.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image1.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image2.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image3.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image4.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image5.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image6.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image7.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image8.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image9.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image10.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image0.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image1.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image2.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image3.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image4.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image5.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image6.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image7.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image8.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image9.png", 
        "http://androidexample.com/media/webservice/LazyListView_images/image10.png" 

      }; 

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


       return inflater.inflate(R.layout.fragmentone,container,false); 

      } 


      @Override 
      public void onActivityCreated(Bundle savedInstanceState) { 

       super.onActivityCreated(savedInstanceState); 

       ListView listview=(ListView) getActivity().findViewById(R.id.listView); 

        // Create custom adapter for listview 
       LazyImageLoadAdapter adapter=new LazyImageLoadAdapter(getActivity(), mStrings); 

       //Set adapter to listview 
       listview.setAdapter(adapter); 


      } 

     } 
} 

Answer 1

提交事务！

fragmentManager.beginTransaction().replace(R.id.container, fr).commit();