RecyclerView一个简单的全景感受

1、添加依赖

dependencies {
...
compile 'com.android.support:recyclerview-v7:21.0.+'
}

2、xml布局

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

3、代码

mRecyclerView = (RecyclerView)findViewById(R.id.my_recycler_view);
//创建默认的线性LayoutManager
mLayoutManager = new LinearLayoutManager(this);
mLinearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(mLayoutManager);
//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
mRecyclerView.setHasFixedSize(true);
//创建并设置Adapter
mAdapter = newMyAdapter(getDummyDatas());
mRecyclerView.setAdapter(mAdapter);

4、Adapter的创建

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    public String[] datas = null;
    public MyAdapter(String[] datas) {
        this.datas = datas;
    }
    //创建新View，被LayoutManager所调用
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item,viewGroup,false);
        ViewHolder vh = new ViewHolder(view);
        return vh;
    }
    //将数据与界面进行绑定的操作
    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int position) {
        viewHolder.mTextView.setText(datas[position]);
    }
    //获取数据的数量
    @Override
    public int getItemCount() {
        return datas.length;
    }
    //自定义的ViewHolder，持有每个Item的的所有界面元素
    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView;
        public ViewHolder(View view){
        super(view);
            mTextView = (TextView) view.findViewById(R.id.text);
        }
    }
}

感谢：
RecyclerView使用介绍