RecyclerView加载不同的布局（新增加载头布局和尾部局）

package com.zzyuyou.recyclerviewdemo.Adapter; import android.content.Context; import android.os.Handler; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import com.zzyuyou.recyclerviewdemo.R; import java.util.List; /** * . _ooOoo_ * . o8888888o * . 88" . "88 * . (| -_- |) * . O\ = /O * . ____/`---'\____ * . . ' \\| |// `. * . / \\||| : |||// \ * . / _||||| -:- |||||- \ * . | | \\\ - /// | | * . | \_| ''\---/'' | | * . \ .-\__ `-` ___/-. / * . ___`. .' /--.--\ `. . __ * . ."" '< `.___\_<|>_/___.' >'"". * . | | : `- \`.;`\ _ /`;.`/ - ` : | | * . \ \ `-. \_ __\ /__ _/ .-` / / * . ======`-.____`-.___\_____/___.-`____.-'====== * . `=---=' * . * . ............................................. * . 佛祖镇楼 BUG辟易 * . 佛曰: * . 写字楼里写字间，写字间里程序员； * . 程序人员写程序，又拿程序换酒钱。 * . 酒醒只在网上坐，酒醉还来网下眠； * . 酒醉酒醒日复日，网上网下年复年。 * . 但愿老死电脑间，不愿鞠躬老板前； * . 奔驰宝马贵者趣，公交自行程序员。 * . 别人笑我忒疯癫，我笑自己命太贱； * . 不见满街漂亮妹，哪个归得程序员？ * . * . 项目名称：RecyclerViewDemo * . 包名：com.zzyuyou.recyclerviewdemo.Adapter * . 类描述： * . 创建人：LoveTing(zhengleilei) * . 邮箱：ting970626@163.com * . 创建时间：2017/6/5 16:00 * . 修改备注： * . 版本号：V 1.0.0 */ public class Adapter_three extends RecyclerView.Adapter<RecyclerView.ViewHolder> { public static final int ITEM = 0;//头布局 public static final int ONE_ITEM = 1;//第一个布局 public static final int TWO_ITEM = 2;//第二个布局 //尾布局 public static final int FOOT_TYPE = 1111; private Boolean isFootView = false;//是否添加了FootView private String footViewText = "";//FootView的内容 private int max_count = 20;//最大显示数 private Context context; private List<Bean> mDatas; public Adapter_three(Context context, List<Bean> mDatas) { this.context = context; this.mDatas = mDatas; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { //加载不同的布局 LayoutInflater mInflater = LayoutInflater.from(context); RecyclerView.ViewHolder holder; if (ONE_ITEM == viewType) { View v = mInflater.inflate(R.layout.item_two, parent, false); holder = new Adapter_three.OneViewHolder(v); } else if (TWO_ITEM == viewType) { View v = mInflater.inflate(R.layout.item_linear, parent, false); holder = new Adapter_three.TwoViewHolder(v); } else if (ITEM == viewType) { View v = mInflater.inflate(R.layout.item, parent, false); holder = new Adapter_three.HeaderViewHolder(v); } else { View v = mInflater.inflate(R.layout.item_foot, parent, false); holder = new Adapter_three.FootViewHolder(v, FOOT_TYPE); } return holder; } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { //为不同的布局设置 if (holder instanceof Adapter_three.OneViewHolder) { ((Adapter_three.OneViewHolder) holder).tv.setText(mDatas.get(position).name); ClickLitener(holder); } else if (holder instanceof Adapter_three.TwoViewHolder) { ((Adapter_three.TwoViewHolder) holder).tv1.setText(mDatas.get(position).name); ((Adapter_three.TwoViewHolder) holder).tv2.setText(mDatas.get(position).nice); ClickLitener(holder); } else if (isFootView && (getItemViewType(position) == FOOT_TYPE)) { if (holder instanceof Adapter_three.FootViewHolder) { ((Adapter_three.FootViewHolder) holder).view_foot.setText(footViewText); // 刷新太快 所以使用Hanlder延迟两秒 Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { max_count += 5; notifyDataSetChanged(); } }, 2000); } else { ((Adapter_three.FootViewHolder) holder).view_foot.setText(mDatas.get(position).name + position); } } } public void ClickLitener(final RecyclerView.ViewHolder holder) { //如果设置了回调，则设置点击事件 if (mOnItemClickLitener != null) { //点击事件 holder.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { int pos = holder.getLayoutPosition(); mOnItemClickLitener.onItemClick(holder.itemView, pos); } }); //长按事件 holder.itemView.setOnLongClickListener(new View.OnLongClickListener() { @Override public boolean onLongClick(View v) { int pos = holder.getLayoutPosition(); mOnItemClickLitener.onItemLongClick(holder.itemView, pos); return false; } }); } } //判断布局（这边是根据被2整除的，实际中 根据获取的值判断） @Override public int getItemViewType(int position) { if (position == 0) { return ITEM; } else if (position == max_count - 1) { return FOOT_TYPE; } else { if (position % 2 == 0) { return TWO_ITEM; } else { return ONE_ITEM; } } } //数据源 @Override public int getItemCount() { if (mDatas.size() < max_count) { return mDatas.size(); } return max_count; } //加载第一个布局 class OneViewHolder extends RecyclerView.ViewHolder { TextView tv; public OneViewHolder(View itemView) { super(itemView); tv = (TextView) itemView.findViewById(R.id.adapter_linear_text); } } //加载第二个布局 class TwoViewHolder extends RecyclerView.ViewHolder { TextView tv1, tv2; public TwoViewHolder(View itemView) { super(itemView); tv1 = (TextView) itemView.findViewById(R.id.adapter_two_1); tv2 = (TextView) itemView.findViewById(R.id.adapter_two_2); } } //头部 ViewHolder class HeaderViewHolder extends RecyclerView.ViewHolder { TextView ddd; public HeaderViewHolder(View itemView) { super(itemView); ddd = (TextView) itemView.findViewById(R.id.ddd); } } //尾布局 class FootViewHolder extends RecyclerView.ViewHolder { TextView view_foot; public FootViewHolder(View itemView, int viewType) { super(ite