ExpandableListView  是安卓自帶的也需要介面卡

adapter=new MyExpandableListViewAdapter(getActivity(),list);
listView.setAdapter(adapter);

public class MyExpandableListViewAdapter extends BaseExpandableListAdapter {
    private TextView textView1,textView2;//程式碼全乾上了 我也是小白   在此記錄  以備後用 
    private Context context
 
;
    private ArrayList<LYMedicalRecord> list;
    public MyExpandableListViewAdapter(Context context, ArrayList<LYMedicalRecord> list) {
        this.context = context;
        this.list = list;
}

    @Override
public int getGroupCount() {
        return list.size();
}

    @Override
public int 
 
getChildrenCount(int groupPosition) {//個人展示需求 故沒有返回子集合個數

//        return list.get(groupPosition).getSubMedicalRecord().size();

return 1;
}

    @Override
public Object getGroup(int groupPosition) {
        return list.get(groupPosition);
}

    @Override
public Object getChild(int groupPosition, int childPosition) {
        return 
 
list.get(groupPosition).getSubMedicalRecord().get(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) {
        GroupHolder groupHolder = null;
        if (convertView == null) {
            convertView = View.inflate(context, R.layout.dianzibingli_group, null);
groupHolder = new GroupHolder();
groupHolder.txt = (TextView) convertView.findViewById(R.id.dianzibingli_grouptv);
convertView.setTag(groupHolder);
} else {
            groupHolder = (GroupHolder) convertView.getTag();
}

        groupHolder.txt.setText(list.get(groupPosition).getGroupKey()+"("+list.get(groupPosition).getSubMedicalRecord().size()+")");
        return convertView;
}

    @Override
public View getChildView(final int groupPosition, int childPosition,
                             boolean isLastChild, View convertView, ViewGroup parent) {
        ItemHolder itemHolder = null;
        if (convertView == null) {
            convertView = View.inflate(context, R.layout.dianzibingli_child, null);
itemHolder = new ItemHolder();
itemHolder.gv = (MyGridView) convertView.findViewById(R.id.dianzibingli_gv);
convertView.setTag(itemHolder);
} else {
            itemHolder = (ItemHolder) convertView.getTag();
}
        MyBaseAdapter<LYMedicalRecord.SubMedicalRecordBean> myBaseAdapter=new MyBaseAdapter<LYMedicalRecord.SubMedicalRecordBean>(context,list.get(groupPosition).getSubMedicalRecord()) {
            @Override
public int getContentView() {
                return R.layout.dianzibingli_child_item;
}

            @Override
public void onInitView(View view, int position) {
                textView1 = (TextView) view.findViewById(R.id.dianzibingligv_item_tv);
textView2=(TextView) view.findViewById(R.id.dianzibingligv_item_tv2);
textView1.setText(list.get(groupPosition).getSubMedicalRecord().get(position).getTitle());
textView2.setText(list.get(groupPosition).getSubMedicalRecord().get(position).getCreateDateTime().substring(2,16));
}
        };
itemHolder.gv.setAdapter(myBaseAdapter);
itemHolder.gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Intent intent=new Intent(context, DianzibingliActivity.class);
intent.putExtra("groupPosition",groupPosition);
intent.putExtra("postion",position);
intent.putExtra("dianzibingli",list);
context.startActivity(intent);
}
        });
        return convertView;
}

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

    class GroupHolder {
        public TextView txt;
}

    class ItemHolder {
        public MyGridView gv;
}
}

最後後附上巢狀可以完全現實的gridview 雖熱網上多的事  我也cv

public class MyGridView extends GridView {//重寫了寬高
public MyGridView(Context context) {
        super(context);
}

    public MyGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
}

    public MyGridView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
}

    @Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
}
}

.......................................................................................

最最後ExpandableListView所有項預設展開

就是是迴圈一下父集合

    if (adapter!=null)
    {
        if (adapter.getGroupCount()!=0)
        {
            for (int i = 0; i < adapter.getGroupCount(); i++) {
                listView.expandGroup(i);
}
        }
    }
    ((HuanZheActivity)getActivity()).changetime();
}

！！！！！！！//todo