Android 显示sqlite中可扩展listview的子元素

我想将可扩展的listview“子元素”填充到sqlite数据库， 用户将元素添加到sqlite后，它将显示在可扩展listview的子级中， 我希望父对象是静态的“不是来自数据库，只是子对象”

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显示您的代码片段，以便我们了解您正在尝试执行的操作。我添加了它，但我只希望光标抛出子元素，如何使父元素保持静态？用户可以为其添加的子元素选择可用的父“类别”

private void fillData() {
    Cursor mGroupsCursor;
    mGroupsCursor = mHelper.fetchGroup();
    startManagingCursor(mGroupsCursor);
    mGroupsCursor.moveToFirst();

    ExpandableListView elv = (ExpandableListView) findViewById(android.R.id.list);

    madapter = new MyExpandableListAdapter(mGroupsCursor, MainActivity.this,
            R.layout.list_group,                     // Your row layout for a group
            R.layout.list_item,                 // Your row layout for a child
            new String[] { "Site_Name" },                      // Field(s) to use from group cursor
            new int[] { R.id.lblListHeader },                 // Widget ids to put group data into
            new String[] { "Day_Name" },          // Field(s) to use from child cursors
            new int[] { R.id.lblListItem });          // Widget ids to put child data into

    elv.setAdapter(madapter);                         // set the list adapter.
}

public class MyExpandableListAdapter extends SimpleCursorTreeAdapter {
    public MyExpandableListAdapter(Cursor cursor, Context context,int groupLayout,
                                   int childLayout, String[] groupFrom, int[] groupTo, String[] childrenFrom,
                                   int[] childrenTo) {
        super(context, cursor, groupLayout, groupFrom, groupTo,
                childLayout, childrenFrom, childrenTo);
    }
    @Override
    protected Cursor getChildrenCursor(Cursor groupCursor) {
        Cursor childCursor = mHelper.fetchChildren(groupCursor.getString(groupCursor.getColumnIndex("id_room")));
        startManagingCursor(childCursor);
        childCursor.moveToFirst();
        return childCursor;
    }