ListFragment设置初始选择

Question

希望有一个快速的问题。我将如何去设置ListFragment上的默认选择。我想要在已经选择顶部列表项目的情况下启动活动。由于

Answer 1

在Android文档（http://developer.android.com/guide/components/fragments.html#Example）来自官方的例子中取出，并支持库API演示：

在这个例子中ListFragment在ListFragment的onActivityCreated方法使用getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);和getListView().setItemChecked(index, true);做一个列表项选择/突出显示，其中index取自默认设置为0的局部变量。所以，你必须是这样的：

public static class TitlesFragment extends ListFragment { 
    boolean mDualPane; 
    int mCurCheckPosition = 0; 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 

     // Populate list with our static array of titles. 
     // (Replace this with your own list adapter stuff 
     setListAdapter(new ArrayAdapter<String>(getActivity(), 
      android.R.layout.simple_list_item_activated_1, Shakespeare.TITLES)); 

     if (savedInstanceState != null) { 
      // Restore last state for checked position. 
      mCurCheckPosition = savedInstanceState.getInt("curChoice", 0); 
     } 

     getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE); 
     getListView().setItemChecked(mCurCheckPosition, true); 
    } 

    @Override 
    public void onSaveInstanceState(Bundle outState) { 
     super.onSaveInstanceState(outState); 
     outState.putInt("curChoice", mCurCheckPosition); 
    } 

    // ... the rest of the ListFragment code .... 
} 

看看这个例子我挂在顶部，应该让你和运行！