1:显示布局文件
<ExpandableListView
android:id="@+id/expandablelistview"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
2:activity中主要代码
//获取适配器
CourseMenuAdapter courseMenuAdapter = new CourseMenuAdapter(getActivity(),data.getData());
expandablelistview.setAdapter(courseMenuAdapter);
3:适配器中
/**
* date:2020/6/28
* author: wsm(Administrator)
* function:
*/
public class CourseMenuAdapter extends BaseExpandableListAdapter {
private Activity activity;
private List<CoursecatalogueBean> list;
public CourseMenuAdapter(Activity activity, List<CoursecatalogueBean> list) {
this.activity = activity;
this.list = list;
}
@Override
public int getGroupCount() {
return list == null ? 0 : list.size();
}
@Override
public int getChildrenCount(int i) {
return list.get(i).getMenu() == null ? 0 : list.get(i).getMenu().size();
}
//名称
@Override
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
ViewHolder1 holder1;
if (view == null) {
view = View.inflate(viewGroup.getContext(), R.layout.menu_itemone, null);
holder1 = new ViewHolder1(view);
view.setTag(holder1);
} else {
holder1 = (ViewHolder1) view.getTag();
}
holder1.mOnename.setText(list.get(i).getClassX());
return view;
}
//内容
@Override
public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
ViewHolder2 holder2;
if (view == null) {
view = View.inflate(viewGroup.getContext(), R.layout.menu_itemtwo, null);
holder2 = new ViewHolder2(view);
view.setTag(holder2);
} else {
holder2 = (ViewHolder2) view.getTag();
}
holder2.mTwoname.setText(list.get(i).getMenu().get(i).getName());
return view;
}
//组的数据
public static class ViewHolder1 {
private final TextView mOnename;
public ViewHolder1(View itemview) {
mOnename = itemview.findViewById(R.id.onename);
}
}
//组的数据
public static class ViewHolder2 {
private final TextView mTwoname;
public ViewHolder2(View itemview) {
mTwoname = itemview.findViewById(R.id.twoname);
}
}
//------------------------------------以下方法无用
@Override
public Object getGroup(int i) {
return null;
}
@Override
public Object getChild(int i, int i1) {
return null;
}
@Override
public long getGroupId(int i) {
return 0;
}
@Override
public long getChildId(int i, int i1) {
return 0;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return false;
}
}
4:网络请求bean类就不展示了,按照接口直接请求即可
5:适配器中两个布局文件按照自己设计图完成就可以
哪里没看懂的小伙伴们可以私信我