RecycleView不同类型Item&添加HeaderView&条目点击事件

先来添加个头玩玩

GridLayoutManager manager = new GridLayoutManager(getApplicationContext(), 2);
manager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
//如果是第一行就设一个条目占一行，如果不是第一行，就设定普通条目着一行；
@Override
public int getSpanSize(int position) {
return position == 0 ? 2 : 1;
}
});
manager.setOrientation(LinearLayoutManager.VERTICAL);

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.oblivion.recycleview.MainActivity">

<android.support.v7.widget.RecyclerView
android:id="@+id/recycleview"
android:layout_width="match_parent"
android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal">

<ImageView
android:id="@+id/iv_recycle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:src="@mipmap/ic_launcher" />

<TextView
android:layout_marginLeft="10dp"
android:id="@+id/tv_type2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="我是测试类型" />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#660f0f0f"
android:orientation="vertical">

<TextView
android:id="@+id/tv_type1"
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"
android:text="ccc"
android:textColor="#fff"
android:textSize="20sp" />
</LinearLayout>

package com.oblivion.recycleview.adpater;

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.ImageView;
import android.widget.TextView;

import com.oblivion.recycleview.R;

import java.util.List;

/**
* github : https://github.com/oblivion0001/AndroidStudioProjects * Blog : http://blog.csdn.net/qq_16666847 * Created by oblivion on 2016/11/30.
*/
public class MyAdaper extends RecyclerView.Adapter<MyAdaper.ViewHolder> {
private List<String> strings;
private Context applicationContext;
private OnItemClickListener onItemClickListener;
private LayoutInflater layoutInflater;
public static final int TYPE_1 = 0;
public static final int TYPE_2 = 1;

/**
* 回调接口
*/
public interface OnItemClickListener {
void OnItemClick(int position, View v);
}

/**
* 对外提供的接口响应
*
* @param listener
*/
public void setOnItemClickListener(OnItemClickListener listener) {
onItemClickListener = listener;
}

public MyAdaper(List<String> strings, Context applicationContext) {
this.strings = strings;
this.applicationContext = applicationContext;
layoutInflater = LayoutInflater.from(applicationContext);
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView;
ViewHolder viewHolder;
//根据不同类型设定不同条目
if (viewType == TYPE_1) {
itemView = layoutInflater.inflate(R.layout.item_type1_recycle,
parent, false);
viewHolder = new Type1ViewHolder(itemView);
} else {
itemView = layoutInflater.inflate(R.layout.item_type2_recycle, parent, false);
viewHolder = new Type2ViewHolder(itemView);
}
return viewHolder;
}

/**
* 绑定数据
*
* @param holder
* @param position
*/
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
//        switch (holder.getItemViewType()) {
//            也可通过这种方式设定
//        }
//根据不同类型设定不同条目
if (holder instanceof Type1ViewHolder) {
Type1ViewHolder viewHolder = (Type1ViewHolder) holder;
viewHolder.tv.setText(strings.get(holder.getLayoutPosition()));
} else {
Type2ViewHolder viewHolder = (Type2ViewHolder) holder;
viewHolder.tv2.setText(strings.get(holder.getLayoutPosition()));
}
}

/**
* 返回不同类型的ViewType
*
* @param position
* @return
*/
@Override
public int getItemViewType(int position) {
//模拟返回值类型
if (position % 3 == TYPE_1) {
return TYPE_1;
} else {
return TYPE_2;
}
}

/**
* 返回数值总量
*
* @return
*/
@Override
public int getItemCount() {
return strings.size();
}

class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
}

/**
* 条目点击事件
*
* @param v
*/
@Override
public void onClick(View v) {
int position = this.getLayoutPosition();
onItemClickListener.OnItemClick(position, v);
}
}

/**
* 类型一的Holder
*/
private class Type1ViewHolder extends ViewHolder {
public TextView tv;

public Type1ViewHolder(View itemView) {
super(itemView);
tv = (TextView) itemView.findViewById(R.id.tv_type1);
}
}

/**
* 类型二Holder
*/
private class Type2ViewHolder extends ViewHolder {
TextView tv2;
ImageView imageView;

public Type2ViewHolder(View itemView) {
super(itemView);
tv2 = (TextView) itemView.findViewById(R.id.tv_type2);
imageView = (ImageView) itemView.findViewById(R.id.iv_recycle);
}
}
}