Android L Developer Preview - ทดลองเล่น RecyclerView

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dependencies {
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    compile fileTree(dir: 'libs', include: ['*.jar'])
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    compile "com.android.support:recyclerview-v7:+"
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}

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apply plugin: 'com.android.application'
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android {
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    compileSdkVersion 'android-L'
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    buildToolsVersion "20.0.0"
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    defaultConfig {
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        applicationId "com.devahoy.hellorecyclerview"
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        minSdkVersion 15
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        targetSdkVersion 'L'
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        versionCode 1
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        versionName "1.0"
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    }
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    buildTypes {
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        release {
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            runProguard false
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            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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        }
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    }
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}
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dependencies {
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    compile fileTree(dir: 'libs', include: ['*.jar'])
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    compile "com.android.support:recyclerview-v7:+"
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}

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package com.devahoy.hellorecyclerview;
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import android.content.Context;
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import android.support.v7.widget.RecyclerView;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.TextView;
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import java.util.List;
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public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
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    private List<Player> mPlayers;
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    private Context mContext;
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    public static class ViewHolder extends RecyclerView.ViewHolder {
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        public TextView mName;
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        public TextView mClub;
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        public ViewHolder(View view) {
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            super(view);
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            mName = (TextView) view.findViewById(R.id.name);
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            mClub = (TextView) view.findViewById(R.id.club);
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        }
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    }
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    public CustomAdapter(Context context, List<Player> dataset) {
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        mPlayers = dataset;
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        mContext = context;
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    }
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    @Override
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    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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        View view = LayoutInflater.from(mContext)
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                .inflate(R.layout.recycler_view_row, parent, false);
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        ViewHolder viewHolder = new ViewHolder(view);
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        return viewHolder;
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    }
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    @Override
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    public void onBindViewHolder(ViewHolder viewHolder, int position) {
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        Player player = mPlayers.get(position);
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        viewHolder.mName.setText(player.getName());
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        viewHolder.mClub.setText(player.getClub());
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    }
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    @Override
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    public int getItemCount() {
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        return mPlayers.size();
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    }
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}

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package com.devahoy.hellorecyclerview;
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public class Player {
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    private String name;
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    private String club;
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    public Player(String name, String club) {
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        this.name = name;
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        this.club = club;
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    }
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    public String getName() {
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        return name;
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    }
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    public void setName(String name) {
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        this.name = name;
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    }
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    public String getClub() {
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        return club;
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    }
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    public void setClub(String club) {
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        this.club = club;
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    }
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}

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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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              android:orientation="horizontal"
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              android:layout_width="match_parent"
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              android:layout_height="match_parent">
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    <TextView android:layout_width="wrap_content"
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              android:layout_height="wrap_content"
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        android:id="@+id/name"
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        android:textColor="#ffee1789"
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        android:layout_marginRight="48dp" />
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    <TextView android:layout_width="wrap_content"
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              android:layout_height="wrap_content"
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              android:textColor="#ff0071ff"
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              android:id="@+id/club" />
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</LinearLayout>

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public class MyActivity extends Activity {
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    private RecyclerView mRecyclerView;
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    private RecyclerView.Adapter mAdapter;
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    private RecyclerView.LayoutManager mLayoutManager;
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    @Override
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    protected void onCreate(Bundle savedInstanceState) {
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        super.onCreate(savedInstanceState);
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        setContentView(R.layout.activity_my);
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        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
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        mRecyclerView.setHasFixedSize(true);
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        mLayoutManager = new LinearLayoutManager(this);
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        mRecyclerView.setLayoutManager(mLayoutManager);
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        mAdapter = new CustomAdapter(this, initPlayer());
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        mRecyclerView.setAdapter(mAdapter);
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    }
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}

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private List<Player> initPlayer() {
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    Player messi = new Player("Leonel Missi", "Barcelona");
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    Player ronaldo = new Player("Cristiano Ronaldo", "Real Madrid");
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    Player suarez = new Player("Luis Suarez", "Liverpool");
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    List<Player> dataset = new ArrayList<Player>();
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    dataset.add(messi);
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    dataset.add(ronaldo);
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    dataset.add(suarez);
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    return dataset;
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}

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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    xmlns:tools="http://schemas.android.com/tools"
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    android:layout_width="match_parent"
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    android:layout_height="match_parent"
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    android:paddingLeft="@dimen/activity_horizontal_margin"
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    android:paddingRight="@dimen/activity_horizontal_margin"
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    android:paddingTop="@dimen/activity_vertical_margin"
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    android:paddingBottom="@dimen/activity_vertical_margin"
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    tools:context=".MyActivity">
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    <android.support.v7.widget.RecyclerView
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        android:id="@+id/recycler_view"
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        android:scrollbars="vertical"
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        android:layout_width="match_parent"
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        android:layout_height="match_parent"/>
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</RelativeLayout>