Ajouter un ExpandableListView dans un fragment

Question

Je développe une application pour honeycomb, et j'ai mis des onglets dans la barre d'action, mais maintenant je ne sais pas comment mettre un ExpandableListView dans l'un des onglets, ou, dans un des fragments.

Answer 1

ExpandableListView n'est pas pris en charge dans les fragments pour le moment. Vous devez sous-classer Fragment pour cela. Si vous ne voulez pas de réinventer la roue, jetez un oeil à ceci: https://gist.github.com/1316903

Answer 2

Voici ce qui est fonctionne pour moi:

intérieur du fragment

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 
} 

, classe interne:

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>