RecyclerView 的简单使用

import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;public class MainActivity extends AppCompatActivity {    private RecyclerView mRecyclerView;    private LinearLayoutManager mLayoutManager;    private String[] str={"a1","a2","a3","a4","a5","a7","a8","a9","a10"};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mRecyclerView = (RecyclerView)findViewById(R.id.my_recycler_view);        //创建默认的线性LayoutManager        mLayoutManager = new LinearLayoutManager(this);        mRecyclerView.setLayoutManager(mLayoutManager);        mLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);        //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        MyAdapter myAdapter = new MyAdapter(str);        mRecyclerView.setAdapter(myAdapter);    }}自定义Adapter
import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;import android.widget.Toast;/** * Created by Administrator on 2017/7/22. */public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {    public String[] datas;    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);            mTextView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    Toast.makeText(v.getContext(),mTextView.getText().toString(),Toast.LENGTH_SHORT).show();                }            });        }    }}运行