安卓：ExpandableListView使得动态童车 [英] Android :ExpandableListView making dynamic childs

问题描述

我有一个ExpandableListView扩展BaseExpandableListAdapter我要动态添加ExpandableListView的孩子的（当一个孩子点击出现其他布局） 请帮助我。

I have a ExpandableListView that extends BaseExpandableListAdapter I want to add childs of the ExpandableListView dynamically (when one child clicked other layout appears) Please Help me.

推荐答案

编写Adapter类，如下面的一个

write the Adapter class like the below one

public class ExpandableArtsListAdapter implements ExpandableListAdapter {
    Context mContext;
    LayoutInflater mLayoutInflator;
    TopActivity top;
    Arts[] list ;
    public ImageLoader imageLoader;
    private static List<All> newData;

    public ExpandableArtsListAdapter(ToptActivity topActivity,
            Arts[] lists) {
        mContext = topActivity;
        imageLoader = new ImageLoader(topActivity);
        top =new TopActivity() ;
        list = lists;       
        mLayoutInflator=LayoutInflater.from(mContext);
    }

    @Override
    public boolean areAllItemsEnabled() {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return list[childPosition];
        // TODO Auto-generated method stub
        //return children[groupPosition][childPosition];
    }

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return childPosition;
    }

    @Override
    public View getChildView(int groupPosition, int childPosition,
            boolean isLastChild, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        Holder holder1 = new Holder();
        if (convertView == null) {
        convertView=mLayoutInflator.inflate(R.layout.top_child,null);

        holder1.TopAll= (TextView)convertView.findViewById(R.id.top_text1);
        holder1.Tops =(TextView)convertView.findViewById(R.id.top_text2);
        holder1.AllGridView=(GridView)convertView.findViewById(R.id.top_gridview);

        convertView.setTag(holder1);
        }
        else {
            holder1 = (Holder) convertView.getTag();
        }
        holder1.TopAll.setText("Top");



        final List<All> all= adapter.getList(arts.getId());

        holder1.AllGridView.setAdapter(new TopGridViewAdapter(mContext,all));
        holder1.Top.setText("Top ");

        holder1.AllGridView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int position,
                    long arg3) {


                }
            }
        });


        return convertView;
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        return 1;
        // TODO Auto-generated method stub
        //return children[groupPosition].length;
    }

    @Override
    public long getCombinedChildId(long groupId, long childId) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public long getCombinedGroupId(long groupId) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public Object getGroup(int groupPosition) {
        return groupPosition;
        // TODO Auto-generated method stub
        //return groups[groupPosition];
    } 

    @Override
    public int getGroupCount() {
        return list.length;
        // TODO Auto-generated method stub
        //return groups.length;
    }

    @Override
    public long getGroupId(int groupPosition) {
        // TODO Auto-generated method stub
        return groupPosition;
    }

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        //write the appropriate code here

        return convertView;
    }

    @Override
    public boolean hasStableIds() {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean isEmpty() {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onGroupCollapsed(int groupPosition) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onGroupExpanded(int groupPosition) {
        // TODO Auto-generated method stub

    }

    @Override
    public void registerDataSetObserver(DataSetObserver observer) {
        // TODO Auto-generated method stub

    }

    @Override
    public void unregisterDataSetObserver(DataSetObserver observer) {
        // TODO Auto-generated method stub

    }
    class Holder {

        public TextView TopAll;
        public TextView Top;
        public GridView AllGridView;



    }

}

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