android - 具有不同尺寸分隔线的可扩展列表，适用于父级和子级

Question

我是 android 新手，这是我的第一个问题。

http://s11.postimg.org/tjhfoq7mb/123.png

我正在寻找创建与上图类似的东西。

1. parent /组有 child = parent /组没有分隔线
2. parent /组没有 child = parent /组有分隔线
3. 最后一个 child = child 有一个完整的分隔符
4. 不是最后一个 child = 不是一个完整的分隔符

有没有可能做到这一点。是是的？怎么办？

Answer 1

是的，这是可能的

@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

    // First of all add the parent line as View in custom_expandable_parent_view.xml and reference it
    convertView = _lay.inflate(R.layout.custom_expandable_parent_view, null);
    View parentLine = convertView.findViewById(your_parent_line_id);

    if (isExpanded) {
        // Now if the your list is expanded you dont have to show it
        // so just hide it
        parentLine.setVisibility(GONE);
    }

    return convertView;
}

@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

    // now in add both childLine and  parentLine in custom_expandable_child_view.xml
    // reference both of them

    convertView = _lay.inflate(R.layout.custom_expandable_child_view, null);
    View parentLine = convertView.findViewById(your_id);
    View childLine = convertView.findViewById(your_id);

    // consider currently both line are showing in everychild.

    if (isLastChild) {
        // now, if it is last child then we have to show parentLine that means a long line. So we only hide childLine
        childLine.setVisibility(View.GONE);
    } else {
        // now, if it is not last child then we have to show childLine that means a short line. for all child except the long one   
        // so here we hide the parent one
        parentLine.setVisibility(View.GONE);
    }

    return convertView;
}

这就是我的代码，我已经做到了。因为我也想要和你一样的布局。我已经解释过了..因此，请根据您的要求进行更改。