public class ElvAdapter extends BaseExpandableListAdapter {
private Context context;
private List<String> groupList;
private List<List<ProductCatagoryBean.DataBean.ListBean>> childList;
private LayoutInflater inflater;
public ElvAdapter(Context context, List<String> groupList, List<List<ProductCatagoryBean.DataBean.ListBean>>
childList) {
this.context = context;
this.groupList = groupList;
this.childList = childList;
inflater = LayoutInflater.from(context);
}
@Override
public int getGroupCount() {
return groupList.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return 1;//因为二级列表是一个RecylerView，所以返回1即可
}
@Override
public Object getGroup(int groupPosition) {
return groupList.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return childList.get(groupPosition).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) {
GroupViewHolder groupViewHolder;
if (convertView == null) {
groupViewHolder = new GroupViewHolder();
convertView = inflater.inflate(R.layout.rvleft_item, null);
groupViewHolder.tv = convertView.findViewById(R.id.tv);
convertView.setTag(groupViewHolder);
} else {
groupViewHolder = (GroupViewHolder) convertView.getTag();
}
//显示数据
groupViewHolder.tv.setText(groupList.get(groupPosition));
return convertView;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup
parent) {
ChildViewHolder childViewHolder;
if (convertView == null) {
childViewHolder = new ChildViewHolder();
convertView = inflater.inflate(R.layout.elv_rv, null);
childViewHolder.rv = convertView.findViewById(R.id.rv);
convertView.setTag(childViewHolder);
} else {
childViewHolder = (ChildViewHolder) convertView.getTag();
}
//显示数据
final List<ProductCatagoryBean.DataBean.ListBean> listBeans = childList.get(groupPosition);
//设置布局管理器
childViewHolder.rv.setLayoutManager(new GridLayoutManager(context, 3));
//设置适配器
ElvRvAdapter elvRvAdapter = new ElvRvAdapter(context, listBeans);
childViewHolder.rv.setAdapter(elvRvAdapter);
elvRvAdapter.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(int position) {
//点击跳转到列表页面
Intent intent = new Intent(context, ListActivity.class);
int pscid = listBeans.get(position).getPscid();
intent.putExtra("pscid", pscid);
context.startActivity(intent);
}
@Override
public void onLongItemClick(int position) {
}
});
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
class GroupViewHolder {
TextView tv;
}
class ChildViewHolder {
RecyclerView rv;
}
