package cn.sinata.xldutils.adapter;
|
|
import android.view.View;
|
import android.view.ViewGroup;
|
|
import cn.sinata.xldutils.adapter.util.ViewHolder;
|
|
import java.util.List;
|
|
/**
|
*
|
* Created by LiaoXiang on 2015/11/4.
|
*/
|
public abstract class HFRecyclerAdapter<T> extends BaseRecyclerAdapter<T> {
|
private static final int TYPE_HEADER = -3;//头部
|
private static final int TYPE_NORMAL = 0;//普通
|
private static final int TYPE_FOOTER = -1;//尾部
|
private ViewHolder headerViewHolder;
|
private ViewHolder footerViewHolder;
|
|
public HFRecyclerAdapter(List<T> mData, int layoutId) {
|
super(mData,layoutId);
|
}
|
|
@Override
|
public int getItemViewType(int position) {
|
if (isHeader(position)){
|
return TYPE_HEADER;
|
}
|
if (isFooter(position)){
|
return TYPE_FOOTER;
|
}
|
return TYPE_NORMAL;
|
}
|
|
@Override
|
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
|
if (viewType == TYPE_HEADER){
|
return headerViewHolder;
|
}else if (viewType == TYPE_FOOTER){
|
return footerViewHolder;
|
}
|
return super.onCreateViewHolder(parent, viewType);
|
}
|
@Override
|
public void onBindViewHolder(ViewHolder holder, int position) {
|
// System.err.println("h-->"+hasHeader()+"--f--->"+isFooter(position));
|
if (!isHeader(position) && !isFooter(position)){
|
super.onBindViewHolder(holder,position-(hasHeader()?1:0));
|
}
|
}
|
|
@Override
|
public int getItemCount() {
|
int count = super.getItemCount();
|
if (hasHeader()){
|
count += 1;
|
}
|
if (hasFooter()){
|
count += 1;
|
}
|
return count;
|
}
|
public int getDataItemCount() {
|
return super.getItemCount();
|
}
|
/**
|
* 设置headerView
|
* @param view headerView
|
*/
|
public void setHeaderView(View view){
|
if (headerViewHolder == null || view != headerViewHolder.itemView){
|
headerViewHolder = new ViewHolder(view);
|
notifyDataSetChanged();
|
}
|
}
|
|
/**
|
* 设置footerView
|
* @param view footerView
|
*/
|
public void setFooterView(View view){
|
|
if (footerViewHolder == null || view != footerViewHolder.itemView){
|
footerViewHolder = new ViewHolder(view);
|
notifyDataSetChanged();
|
}
|
}
|
|
/**
|
* 是否有headerView
|
* @return 是否有headerView
|
*/
|
private boolean hasHeader(){
|
return headerViewHolder != null;
|
}
|
|
/**
|
* 是否有footerView
|
* @return 是否有footerView
|
*/
|
private boolean hasFooter(){
|
return footerViewHolder != null;
|
}
|
|
/**
|
* 是否是头view
|
* @param position 当前位置
|
* @return 是否头view
|
*/
|
private boolean isHeader(int position){
|
return hasHeader() && position == 0;
|
}
|
|
/**
|
* 当前位置是否是footerView
|
* @param position 当前位置
|
* @return 是否footerView
|
*/
|
private boolean isFooter(int position){
|
return hasFooter() && position == getDataItemCount() + (hasHeader() ? 1 : 0);
|
}
|
}
|
