随着 Google 推出了全新的设计语言 Material Design，还迎来了新的 Android 支持库 v7，其中就包含了 Material Design 设计语言中关于 Card 卡片概念的实现 —— CardView。RecyclerView也是谷歌V7包下新增的控件,用来替代ListView的使用,在RecyclerView标准化了ViewHolder类似于ListView中convertView用来做视图缓存.

RecyclerView的优点就是,他可以通过设置LayoutManager来快速实现listview、gridview、瀑布流的效果，而且还可以设置横向和纵向显示，添加动画效果等。

CardView实现卡片化效果。

下拉加载使用SwipeRefreshLayout，是官方的下拉刷新控件，简洁美观的风格使其广泛应用在项目中。美中不足的是SwipeRefreshLayout缺少上拉加载的效果，今天结合RecyclerView实现一个支持下拉刷新与上拉加载的SwipeRefreshLayout。

案例包含了：RecyclerView基本使用，RecyclerView上拉刷新下拉加载，RecyclerView多Item布局，CardView基本使用和CardView上拉刷新下拉加载。如图：（注：第三个案例线显示格式在模拟器上有问题，手机则没问题的,手机测试效果更佳）

布局：

<android.support.v7.widget.RecyclerView
    android:id="@+id/my_recycler_view"
    android:scrollbars="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

Activity：

public class RecyclerViewActivity extends Activity {
private RecyclerView recyclerView;
private List<String> mDatas;
private RecyclerAdapter1 adapter;
@SuppressLint("InlinedApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.demo1);
    initData();
    initView();
}
private void initView()
{
    recyclerView=(RecyclerView) findViewById(R.id.demo1_recycler);
    // 设置布局管理LayoutManager
    LinearLayoutManager manager=new LinearLayoutManager(this);
    //设置水平或者垂直
    // manager.setOrientation(LinearLayoutManager.HORIZONTAL);
    recyclerView.setLayoutManager(manager);
    // （可选）如果可以确定每个item的高度是固定的，设置这个选项可以提高性能
    recyclerView.setHasFixedSize(true);
    adapter=new RecyclerAdapter1(this,mDatas);
    recyclerView.setAdapter(adapter);
    adapter.setOnItemClickListener(new IOnClickListenter() {
        @Override
        public void onItemClick(View view, int position) {
            Toast.makeText(getApplicationContext(),position+"---"+mDatas.get(position),Toast.LENGTH_LONG).show();
        }
    });

}
private void initData() {
    mDatas = new ArrayList<String>();
    for (int i = 0; i <= 50; i++) {
        mDatas.add("item---" +i);
    }
}

}

Adapter：
 
public class RecyclerAdapter1 extends RecyclerView.Adapter<RecyclerAdapter1.ViewHolder>{
private Context context;
private List&lt;String&gt; list;
public RecyclerAdapter1(Context context, List&lt;String&gt; list){
    this.context=context;
    this.list=list;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view= LayoutInflater.from(context).inflate(R.layout.demo1_item,parent,false);
    ViewHolder viewHolder=new ViewHolder(view);
    return viewHolder;
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    holder.textView.setText(list.get(position));
}

@Override
public int getItemCount() {
    return list.size();
}
private IOnClickListenter onClickListenter=null;
public void setOnItemClickListener(IOnClickListenter listener)
{
    this.onClickListenter=listener;
}

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
    private TextView textView;

    public ViewHolder(View view)
    {
        super(view);
        textView=(TextView)view.findViewById(R.id.textview1);
        textView.setOnClickListener(this);
    }
    @Override
    public void onClick(View v) {
        if (onClickListenter != null) {
            onClickListenter.onItemClick(v,getPosition());
        }
    }
}

}

上拉刷新下拉加载布局
 
<android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipeRefreshLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    &lt;android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"&gt;

    &lt;/android.support.v7.widget.RecyclerView&gt;

</android.support.v4.widget.SwipeRefreshLayout>

上拉刷新下拉加载Activity
 
public class RecyclerViewPullActivity extends Activity {
private SwipeRefreshLayout swipeRefreshLayout;
private MyRefreshRecyclerView recyclerView;
public static  List&lt;String&gt; list=new ArrayList&lt;String&gt;();
private RecyclerAdapter2 adapter;
private Handler mHandler = new Handler();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.demo2);
    initView();
}
private void initView(){
    swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_layout);
    recyclerView = (MyRefreshRecyclerView) findViewById(R.id.recycler);
    adapter=new RecyclerAdapter2();
    recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
    swipeRefreshLayout.setColorSchemeResources(R.color.blue,R.color.green);
    swipeRefreshLayout.post(new Runnable() {
        @Override
        public void run() {
            swipeRefreshLayout.setRefreshing(true);
        }
    });
    mHandler.postDelayed(new Runnable() {
        @Override
        public void run() {
            getData();
            recyclerView.setAdapter(adapter);
            adapter.notifyDataSetChanged();
            swipeRefreshLayout.setRefreshing(false);
        }
    },1500);
    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    getData();
                    recyclerView.setAdapter(adapter);
                    adapter.notifyDataSetChanged();
                    swipeRefreshLayout.setRefreshing(false);
                }
            }, 1500);
        }
    });
    recyclerView.setMyRefreshRecyclerViewListener(new MyRefreshRecyclerView.MyRefreshRecyclerViewListener() {
        @Override
        public void onLoadMore() {
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (list.size() &gt; 14) {
                        recyclerView.setLoadMore(true);
                    } else {
                        int randomInt = new Random().nextInt(100);
                        list.add("上拉加载添加数字:" + randomInt);
                        adapter.notifyDataSetChanged();
                        recyclerView.setLoadMore(false);
                    }

                }
            }, 1000);
        }
    });
}

private void getData() {
    list.clear();
    Random random = new Random();
    while (list.size() &lt; 12) {
        int randomInt = random.nextInt(100);
        list.add(String.valueOf(randomInt));
    }
}

}

添加依赖库：
 
  compile 'com.android.support:recyclerview-v7:23.2.1'
  compile 'com.android.support:cardview-v7:23.2.1'