当RecyclerView有下拉刷新时，有时候设计图上，体现出来的列表有头部布局，这可以通过Adapter实现加载多套布局就可以，这里以加载两种布局为例说明。
先看看Adapter的代码：
import android.annotation.SuppressLint;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import com.alvin.R;
import java.util.ArrayList;
import java.util.List;
public class MainListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
private List<Data> list;
private ArrayList<ItemEntity> jdList;
private Context context;
public MainListAdapter(List<Data> list,ArrayList<ItemEntity> jdList, Context context) {
this.list = list;
this.jdList = jdList;
this.context = context;
}
@Override
public int getItemViewType(int position) {
return list.get(position).getShowType();
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if(viewType==1){
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_header_main_list,parent,false);
return new HeaderHolder(view);
}else{
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_list_main,parent,false);
return new ViewHolderItem(view);
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
if(holder instanceof HeaderHolder){
final HeaderHolder headerHolder = (HeaderHolder) holder;
//TODO 实现相关逻辑
}else if(holder instanceof ViewHolderItem){
}
}
@Override
public int getItemCount() {
return list.size();
}
private class HeaderHolder extends RecyclerView.ViewHolder{
HeaderHolder(View itemView) {
super(itemView);
}
}
private class ViewHolderItem extends RecyclerView.ViewHolder{
ViewHolderItem(View itemView) {
super(itemView);
}
}
}
getItemViewType()这个返回的是列表当前布局类型，在Adapter加载布局时，对齐进行判断，也就是onBindViewHolder()方法中进行相应的判断逻辑实现。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
