今年用了Android Studio后才認識到RecyclerView......略菜.....編寫完成后現(xiàn)在去看又感覺不太懂了....所以今天想要總結(jié)下，讓自己以后回顧的時候可以快一點...
PS：recyclerView網(wǎng)上有很多大神的資料寫的很屌汽畴，菜如我只取了一瓢

• 先上個效果圖吧：

無標題22.png

以上的圖標請自找恤筛。膀篮。猖凛。

• 列出下程序的目錄（黑框框中的都是，其它的請自動忽略）

無標題.png

• 如上圖所示：

• MyItemClickListener ： 列表行點擊事件的接口盏缤，實現(xiàn)后用于響應列表點擊事件

• MyItemLongClickListener：列表行長按事件的接口砰蠢，實現(xiàn)后用于響應列表長按事件

• ContentViewHolder：列表行視圖容器，對應的section_item.xml中控件都綁定在此唉铜，實現(xiàn)一個容器的顯示台舱，也就是列表的一行

• FootViewHolder：列表尾視圖容器，對應的section_footer.xml中控件都綁定在此潭流，實現(xiàn)一行列表尾的顯示

• HeadViewHolder：列表頭視圖容器竞惋，對應的section_header.xml中控件都綁定在此，實現(xiàn)一行列表頭的顯示

• MainActivity：實現(xiàn)activity_main.xml中recyclerView的綁定和顯示

• 其中：

  • 每個ViewHolder對應一個xml（如ContentViewHolder對應section_item）
  • 每個ViewHolder都會在MyRecycViewAdapter中初始化灰嫉，并實現(xiàn)控件的賦值
  • 生成列表只需要以下幾步：
    • 1拆宛、在activity_main.xml中創(chuàng)建一個RecyclerView的控件，并在MainAcitivity中綁定
    • 2讼撒、創(chuàng)建一個MyRecyclerVIewAdapter的對象浑厚，并且把你需要顯示的數(shù)據(jù)傳遞給它
    • 3股耽、使用RecyclerView.setAdapter(MyRecyclerVIewAdapter對象)實現(xiàn)列表的顯示
    • 4、若需要更新钳幅，使用MyRecyclerVIewAdapter對象.notifyDataSetChanged()

• 下面就附上代碼

MyItemClickListener 列表行點擊事件接口

public interface MyItemClickListener {  
  public void MyItemClick(View view, int position);
}

MyItemLongClickListener 列表行長按事件接口

public interface MyItemLongClickListener {    
  public void MyItemLongClick(View view, int position);物蝙、
}

ContentViewHolder 繼承自RecyclerView.ViewHolder，section_item.xml中的控件都綁定于此敢艰，我們可以通過ContentViewHolder對象來獲取其中的控件诬乞，進而賦值（如：ContentViewHolder對象.tv.setText（ "xxxx"）；）

public class ContentViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {   
 //xml中的控件盖矫，由于要在會在MyRecyclerViewAdapter中調(diào)用丽惭，所以不能為私有
    TextView tv;    
    View cutLine;    
    ImageView icon;   
   //點擊事件和長按事件   
    private MyItemClickListener mItemClickListener;    
    private MyItemLongClickListener mItemLongClickListener;    
    //這個是ContentViewHolder的構造函數(shù)，會在MyRecyclerViewAdapter中調(diào)用辈双，生成ContentViewHolder一個對象    
     public ContentViewHolder(View itemView,MyItemClickListener mItemClickListener,MyItemLongClickListener mItemLongClickListener) {  
        super(itemView);       
         tv = (TextView)itemView.findViewById(R.id.tv);        
        cutLine = (View)itemView.findViewById(R.id.cutLine);       
        icon = (ImageView)itemView.findViewById(R.id.icon);     
        this.mItemClickListener = mItemClickListener;    
        this.mItemLongClickListener = mItemLongClickListener; 
       itemView.setOnClickListener(this);     
       itemView.setOnLongClickListener(this);  
  }  

 //短按 
@Override    
  public void onClick(View v) {       
      if(mItemClickListener != null){ 
           mItemClickListener.MyItemClick(v,getPosition());  //若不為空則調(diào)用MyItemClickListener的MyItemClick方法    
       }  
    }    

//長按   
@Override    
public boolean onLongClick(View v) {      
    if(mItemLongClickListener != null){ 
        mItemLongClickListener.MyItemLongClick(v,getPosition());   //若不為空則調(diào)用MyItemLongClickListener的MyItemLongClick方法      
        }  
       return true;   
     }
}

section_item.xml 包涵一個圖標责掏，文字和一條分割線

<?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:orientation="vertical">

    <RelativeLayout
        android:id="@+id/column"
        android:layout_width="match_parent"
        android:layout_height="50dp">

        <ImageView
            android:id="@+id/icon"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_marginLeft="5dp"
            android:layout_marginTop="5dp"
            />

        <TextView
            android:id="@+id/tv"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_toRightOf="@+id/icon"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:text="mxy"
            android:gravity="center_vertical"
            />
    </RelativeLayout>

    <View
        android:id="@+id/cutLine"
        android:layout_width="match_parent"
        android:layout_height="0.3dp"
        android:background="@color/black"/>



</LinearLayout>

FootViewHolder 列表尾viewholder，列表尾也可以像ContentViewHolder一樣放入很多控件湃望，我只放了一個TextView

public class FootViewHolder extends RecyclerView.ViewHolder {

    TextView footer_tv;
    public FootViewHolder(View itemView) {
        super(itemView);
        footer_tv = (TextView)itemView.findViewById(R.id.footer_tv);
    }
}

section_footer.xml 列表尾xml

<?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">


    <TextView
        android:id="@+id/footer_tv"
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:text="footer_tv"
        android:gravity="center"
        android:background="#30696969"
        />

</LinearLayout>

HeadViewHolder列表頭viewholder

public class HeadViewHolder extends RecyclerView.ViewHolder {

    TextView header_tv;
    public HeadViewHolder(View itemView) {
        super(itemView);
        header_tv = (TextView)itemView.findViewById(R.id.header_tv);
    }
}

section_header.xml 列表頭xml

<?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"
    >

   <TextView
       android:id="@+id/header_tv"
       android:layout_width="match_parent"
       android:layout_height="20dp"
       android:text="header_tv"
       android:gravity="center"
       android:background="#30696969"
       />

</LinearLayout>

MyRecyclerViewAdapter 這個是核心换衬，看上去很長，但其實層次感很強证芭，主要分為以下4部分

• 1 ViewHolder的Create
• 2 ViewHolder的賦值
• 3 列表的行數(shù)
• 4 其他部分
  • 4.1 因為我有三個ViewHolder分別表示content瞳浦，head，foot所以我需要在getItemViewType中判斷
  • 4.2 因為我有點擊事件废士，所以需要點擊方法

public class MyRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {


    private static final int TYPE_HEADER = 0;  //表格頭
    private static final int TYPE_CONTENT = 1; //表格內(nèi)容
    private static final int TYPE_FOOTER = 2;  //表格尾


    private LayoutInflater inflater;
    private List<String> slist;    //標識叫潦，標識是頭還是尾，還是內(nèi)容
    private List<contentData> cList; //頭或尾或內(nèi)容的數(shù)據(jù)


    MyItemClickListener mItemClickListener;
    MyItemLongClickListener mItemLongClickListener;

    public MyRecyclerViewAdapter(Context context,List<allData> list){
        this.slist = list.get(0).getSlist();
        this.cList =list.get(0).getMlist();
        inflater=LayoutInflater. from(context);

    }
  /************************************此處區(qū)分viewholder類型***************************************/
    //這里判斷viewType類型官硝，到底是header還是footer還是content
    @Override
    public int getItemViewType(int postion){

        if(slist.get(postion).equals("head")){return TYPE_HEADER;}
        else if (slist.get(postion).equals("foot")){return TYPE_FOOTER;}
        else{return TYPE_CONTENT;}

//       if(postion == 0){return TYPE_HEADER;}  //header
//       else if(postion == getItemCount()-1){return TYPE_FOOTER;} //footer
//       else{return TYPE_CONTENT;}  //content

    }
    /************************************點擊事件的方法***************************************/
    //表格行點擊方法
    public void setOnItemClickListener(MyItemClickListener listener){
        this.mItemClickListener = listener;
    }
    //表格行長按方法
    public void setOnItemLongClickListener(MyItemLongClickListener listener){
        //listener為MainAcitivity傳遞進來的listener
        this.mItemLongClickListener = listener;
    }

    /************************************create部分***************************************/
    //此函數(shù)中根據(jù)xml生成View對象矗蕊，并傳遞進入對應的ViewHolder構造函數(shù)，生成對應的Viewholder對象氢架，并返回
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if(viewType == TYPE_CONTENT){ //表格內(nèi)容
            View view = inflater.inflate(R.layout.section_item,parent, false); //根據(jù)xml生成View對象
            ContentViewHolder viewholder = new ContentViewHolder(view,mItemClickListener,mItemLongClickListener);
            return viewholder;
        }else if(viewType == TYPE_HEADER){//表格頭
            View view = inflater.inflate(R.layout.section_header,parent, false);
            HeadViewHolder headholder = new HeadViewHolder(view);
            return headholder;
        }else{//表格尾
            View view = inflater.inflate(R.layout.section_footer,parent, false);
            FootViewHolder footholder = new FootViewHolder(view);
            return footholder;
        }

    }

    /************************************為ViewHolder中的控件賦值部分***************************************/
    //此函數(shù)中holder即為onCreateViewHolder返回的的holder傻咖，根據(jù)這些holder獲取對應的控件，進行賦值
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if(holder instanceof ContentViewHolder){ // content 表格內(nèi)容
            ContentViewHolder contentholder = (ContentViewHolder) holder;
            contentholder.tv.setText(cList.get(position).getDescrib());
            contentholder.icon.setImageResource(cList.get(position).getIconID());
        }else if(holder instanceof HeadViewHolder){  //header 表格頭
            HeadViewHolder headholder = (HeadViewHolder) holder;
            headholder.header_tv.setText(cList.get(position).getDescrib());
        }else{ //footer 表格尾
            FootViewHolder footholder = (FootViewHolder) holder;
            footholder.footer_tv.setText(cList.get(position).getDescrib());
        }
    }
     /************************************列表行數(shù)***************************************/
    //此處返回表格的行數(shù)岖研，也就是數(shù)據(jù)的size
    @Override
    public int getItemCount() {
        return slist.size();
    }
}

MainAcitvity主要分為數(shù)據(jù)的生成卿操，和設置recyclerView的適配

public class MainActivity extends AppCompatActivity implements MyItemClickListener, MyItemLongClickListener {

    private RecyclerView recyclerView;
    private MyRecyclerViewAdapter recycleAdapter;
    private List<String> slist =new ArrayList<String>();
    private List<contentData> clist = new ArrayList<contentData>();

    private List<allData> mylist = new ArrayList<allData>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

       initData();
        recyclerView = (RecyclerView)this.findViewById(R.id.recyclerView);
        recycleAdapter = new MyRecyclerViewAdapter(this,mylist);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        //設置為垂直布局，這也是默認的
        layoutManager.setOrientation(OrientationHelper.VERTICAL);
        //設置布局管理器
        recyclerView.setLayoutManager(layoutManager);
        //設置Adapter
        recyclerView.setAdapter(recycleAdapter);
        //設置增加或刪除條目的動畫
        recyclerView.setItemAnimator(new DefaultItemAnimator());
        //分割線
        //  recyclerView.addItemDecoration(new RecyclerDivideLine(Main.this,LinearLayoutManager.VERTICAL));
//        recycleAdapter.setOnItemClickListener(this);
//        recycleAdapter.setOnItemLongClickListener(this);

        recycleAdapter.setOnItemClickListener(this);
        recycleAdapter.setOnItemLongClickListener(this);


    }
    //數(shù)據(jù)初始化孙援，其中在slist中add的是標識符害淤，head就說明這行是表格頭，body說明這行是表格內(nèi)容拓售，
  //而clist中add的有兩個一個是圖片的ID窥摄，一個是文字的說明，而head和foot沒有圖片ID
    private void initData(){

         clist.add(new contentData(1,"this is head1"));slist.add("head");
         clist.add(new contentData(R.drawable.ins,"儀表說明"));slist.add("body");
         clist.add(new contentData(R.drawable.handle,"操作說明"));slist.add("body");

        clist.add(new contentData(1,"this is head2"));slist.add("head");
        clist.add(new contentData(R.drawable.vision,"版本說明"));slist.add("body");
        clist.add(new contentData(R.drawable.err,"報錯指南"));slist.add("body");
        // clist.add(new contentData(5,"footer1"));slist.add("foot");

        clist.add(new contentData(1,"this is head3"));slist.add("head");
        clist.add(new contentData(R.drawable.buy,"業(yè)務咨詢"));slist.add("body");
        clist.add(new contentData(R.drawable.fix,"售后返修"));slist.add("body");

        clist.add(new contentData(1,"this is head4"));slist.add("head");
        clist.add(new contentData(R.drawable.sms,"短信發(fā)送"));slist.add("body");
       clist.add(new contentData(5,"this is foot1"));slist.add("foot");



        mylist.add(new allData(clist,slist));


    }

    //列表行的點擊在此響應
    @Override
    public void MyItemClick(View view, int position) {
        Toast.makeText(this, ""+position, Toast.LENGTH_SHORT).show();
    }
    //列表行的長按在此響應
    @Override
    public void MyItemLongClick(View view, int position) {
        Toast.makeText(this, ""+position, Toast.LENGTH_SHORT).show();
    }
}

acitivity_main.xml

<?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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.myapplication.MainActivity">


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

       android:layout_alignParentTop="true"
       android:layout_alignParentLeft="true"
       android:layout_alignParentStart="true">
   </android.support.v7.widget.RecyclerView>


</RelativeLayout>

contentData包括兩個參數(shù)邻辉，一個是icon也就是圖標的ID溪王，一個是describe也就是文字說明

public class contentData {

    public int getIconID() {
        return iconID;
    }

    public void setIconID(int iconID) {
        this.iconID = iconID;
    }

    private int iconID;

    public String getDescrib() {
        return describ;
    }

    public void setDescrib(String describ) {
        this.describ = describ;
    }

    private String describ;

    public contentData(int iconID,String describ){
        this.iconID = iconID;
        this.describ =describ;
    }


}

allData 其中mlist為內(nèi)容數(shù)據(jù)模型，slist為描述數(shù)據(jù)模型

public class allData {



    private List<contentData> mlist;
    private List<String> slist;

    public allData(List<contentData> mlist,List<String> slist){
        this.mlist = mlist;
        this.slist = slist;
    }


    public List<String> getSlist() {
        return slist;
    }

    public void setSlist(List<String> slist) {
        this.slist = slist;
    }

    public List<contentData> getMlist() {
        return mlist;
    }

    public void setMlist(List<contentData> mlist) {
        this.mlist = mlist;
    }
}