expandableListView在片段

Question

我有一個android應用程序至極包含一個ActionBar選項卡片段，我想把expandableListView放在片段中，我該怎麼做？這裏是我的代碼：

這是ActionBarActivity

public class TabActionBarActivity extends Activity { 

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

    ActionBar actionBar = getActionBar(); 
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 

    String label1 = getResources().getString(R.string.label1); 
    Tab tab = actionBar.newTab(); 
    tab.setText(label1); 

    TabListener<Tab1Fragment> tl = new TabListener<Tab1Fragment>(this, label1, Tab1Fragment.class); 

    tab.setTabListener(tl); 
    actionBar.addTab(tab); 


    String label2 = getResources().getString(R.string.label2); 
      tab = actionBar.newTab(); 
      tab.setText(label2); 
      TabListener<Tab2Fragment> tl2 = new TabListener<Tab2Fragment>(this, label2, Tab2Fragment.class); 
      tab.setTabListener(tl2); 
      actionBar.addTab(tab); 


} 


private class TabListener<T extends Fragment> implements 
      ActionBar.TabListener { 
     private Fragment mFragment; 
     private final Activity mActivity; 
     private final String mTag; 
     private final Class<T> mClass; 


     public TabListener(Activity activity, String tag, Class<T> clz) { 
         mActivity = activity; 
         mTag = tag; 
         mClass = clz; 
        } 



     @Override 
     public void onTabReselected(Tab tab, FragmentTransaction ft) { 
      // TODO Auto-generated method stub 

     } 




     @Override 
     public void onTabSelected(Tab tab, FragmentTransaction ft) { 
      // Check if the fragment is already initialized 
         if (mFragment == null) { 
          // If not, instantiate and add it to the activity 
          mFragment = Fragment.instantiate(mActivity, mClass.getName()); 
          ft.add(android.R.id.content, mFragment, mTag); 
         } else { 
          // If it exists, simply attach it in order to show it 
          ft.attach(mFragment); 
         } 


     } 




     @Override 
     public void onTabUnselected(Tab tab, FragmentTransaction ft) { 
      if (mFragment != null) { 
           // Detach the fragment, because another one is being attached 
           ft.detach(mFragment); 
          } 


     } 


} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.tab_action_bar, menu); 
    return true; 
} 

}

這是Tab1Fragment：

public class Tab1Fragment extends Fragment { 

ExpandableListView mExpandableList; 



@Override 

    public View onCreateView(LayoutInflater inflater, ViewGroup container, 

      Bundle savedInstanceState) { 
     return (LinearLayout) inflater.inflate(R.layout.tab1, container, false); 




    } 

}

Answer 1

添加您的可擴展列表視圖中tab1.xml。像，

tab1.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity" > 

    <ExpandableListView 
     android:id="@+id/expandableListView1" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" > 
    </ExpandableListView> 

</RelativeLayout> 

Answer 2

以下是對我的作品：

內部片段

private String[] categories; 
private String[][] categoryItems; 

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

    categories = getResources().getStringArray(R.array.videos_curriculum); 

    String[] category1 = getResources().getStringArray(R.array.video_category1); 
    String[] category2 = getResources().getStringArray(R.array.video_category2); 
    String[] category3 = getResources().getStringArray(R.array.video_category3); 
    categoryItems = new String[][]{category1, category2, category3}; 

} 


@Override 
public void onViewCreated(View view, Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 

    listView = (ExpandableListView) view.findViewById(R.id.expListView); 
    listView.setAdapter(new VideoGroupsListAdapter(categories, categoryItems)); 
    listView.setGroupIndicator(null); // I don't need group indicator on left 
} 

的，內部類：

public class VideoGroupsListAdapter extends BaseExpandableListAdapter { 
    private final LayoutInflater inflater; 
    private String[] groups; 
    private String[][] children; 

    public VideoGroupsListAdapter(String[] groups, String[][] children) { 
     this.groups = groups; 
     this.children = children; 
     inflater = LayoutInflater.from(getActivity()); 
    } 

    @Override 
    public int getGroupCount() { 
     return groups.length; 
    } 

    @Override 
    public int getChildrenCount(int groupPosition) { 
     return children[groupPosition].length; 
    } 

    @Override 
    public Object getGroup(int groupPosition) { 
     return groups[groupPosition]; 
    } 

    @Override 
    public Object getChild(int groupPosition, int childPosition) { 
     return children[groupPosition][childPosition]; 
    } 

    @Override 
    public long getGroupId(int groupPosition) { 
     return groupPosition; 
    } 

    @Override 
    public long getChildId(int groupPosition, int childPosition) { 
     return childPosition; 
    } 

    @Override 
    public boolean hasStableIds() { 
     return true; 
    } 

    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { 
     ViewHolder holder; 
     if (convertView == null) { 
      convertView = inflater.inflate(R.layout.new_video_header, parent, false); 
      holder = new ViewHolder(); 

      holder.text = (TextView) convertView.findViewById(R.id.headerTitleTxt); 
      holder.icon = (TextView) convertView.findViewById(R.id.headerIconTxt); 
      convertView.setTag(holder); 
     } else { 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     holder.text.setText(getGroup(groupPosition).toString()); 
     if (isExpanded) { 
      holder.icon.setText(R.string.ic_down); 
     } else { 
      holder.icon.setText(R.string.ic_up); 
     } 

     return convertView; 
    } 

    @Override 
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { 
     ViewHolder holder; 
     if (convertView == null) { 
      convertView = inflater.inflate(R.layout.new_video_list_item, parent, false); 
      holder = new ViewHolder(); 

      holder.text = (TextView) convertView.findViewById(R.id.titleTxt); 
      holder.icon = (TextView) convertView.findViewById(R.id.watchedIconTxt); 
      convertView.setTag(holder); 
     } else { 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     holder.text.setText(getChild(groupPosition, childPosition).toString()); 

     return convertView; 
    } 

    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return true; 
    } 

    private class ViewHolder { 
     TextView text; 
     TextView icon; 
    } 

} 

new_videos_header.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="horizontal" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    style="@style/ListItem.Header.Light" 
    android:gravity="center_vertical" 
    android:paddingLeft="@dimen/default_scr_side_padding" 
    android:paddingRight="@dimen/default_scr_side_padding" 
    > 

    <!--Title--> 
    <TextView 
     android:id="@+id/headerTitleTxt" 
     android:layout_width="0dip" 
     android:layout_height="wrap_content" 
     android:layout_weight="1" 
     android:paddingLeft="8dip" 
     style="@style/HeaderTitle.Dark" 
     /> 

    <!--Right Icon--> 
    <TextView 
     android:id="@+id/headerIconTxt" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="@string/ic_up" 
     /> 

</LinearLayout>