在很早之前，RecyclerView还没出来的时候，列表组件基本都使用ListView，ListView本身不会自带复用机制，想要实现复用都是程序猿使用代码控制实现的，随着Recyclerview的出现，项目中很少使用ListView了，因为Recyclerview自带复用机制。

（1）添加权限

RecyclerView本身并不需要添加权限，但是大部分列表组件都含有图片，如果是网络路片，那么需要添加网络权限

<uses-permission android:name="android.permission.INTERNET"/>

如果图片需要缓存（三方图片加载库基本都自带图片缓存机制），那么还需要文件存储权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

如果加载本地缓存的图片，那么还需要读取文件的权限

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

（2）添加依赖

//RecyclerView依赖
implementation 'com.android.support:recyclerview-v7:28.0.0'
//AndroidX对应的RecyclerView依赖
//implementation 'androidx.recyclerview:recyclerview:1.0.0'
//glide依赖，加载图片使用
implementation 'com.github.bumptech.glide:glide:4.9.0'

注意：Recyclerview本身和Glide框架无关，只是本例中图片的展示需要Glide加载。

（3）代码部分

activity_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"
    tools:context=".MainActivity">


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

</RelativeLayout>

recycleview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linear"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_margin="20dp">


    <ImageView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="40dp"
        android:paddingBottom="5dp"
        android:layout_gravity="center_horizontal" />


    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:layout_gravity="center_horizontal"
        android:textSize="18sp"
        android:text=""
        android:gravity="center_horizontal"
        android:textColor="@color/colorAccent"
        android:visibility="visible" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="center_horizontal"
        android:padding="10dp">

        <Button
            android:id="@+id/button_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="按钮1"/>

        <Button
            android:id="@+id/button_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="30dp"
            android:text="按钮2"/>

    </LinearLayout>
</LinearLayout>

PhotoBean.java

public class PhotoBean {

    private String url;

    private String name;

    public PhotoBean(String url, String name) {
        this.url = url;
        this.name = name;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

RecycleViewAdapter.java

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

    private List<PhotoBean> mData;
    private Context mContext;
    private OnItemClickLitener mOnItemClickLitener;

    public RecycleViewAdapter(Context context, List<PhotoBean> mData) {
        this.mContext = context;
        this.mData = mData;
    }

    @Override
    public int getItemViewType(int position) {
        //如果返回position，就会失去RecyclerView特有复用机制
        return position;
    }

    /**
     * 设置数据
     * @param mData
     */
    public void setDatas(List<PhotoBean> mData){
        this.mData = mData;
    }

    @Override
    public int getItemCount() {
        return mData != null ? mData.size() : 0;
    }

    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
        PhotoBean dataListBean = mData.get(position);

        if(dataListBean != null){
            Glide.with(mContext).load(dataListBean.getUrl()).into(((ViewHolder)holder).imgView);
            ((ViewHolder)holder).tvName.setText(dataListBean.getName());
        }

        ((ViewHolder)holder).imgView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mOnItemClickLitener != null) {
                    if(mData != null && mData.size() > 0){
                        mOnItemClickLitener.onItemClick(((ViewHolder)holder).imgView, position);
                    }
                }
            }
        });

        ((ViewHolder)holder).button_1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mOnItemClickLitener != null) {
                    if(mData != null && mData.size() > 0){
                        mOnItemClickLitener.onItemClick(((ViewHolder)holder).button_1, position);
                    }
                }
            }
        });

        ((ViewHolder)holder).button_2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mOnItemClickLitener != null) {
                    if(mData != null && mData.size() > 0){
                        mOnItemClickLitener.onItemClick(((ViewHolder)holder).button_2, position);
                    }
                }
            }
        });
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(mContext).inflate(R.layout.recycleview_item, parent, false);
        ViewHolder holder = new ViewHolder(itemView);
        return holder;
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        ImageView imgView;
        TextView tvName;
        Button button_1, button_2;

        public ViewHolder(View itemView) {
            super(itemView);
            imgView = itemView.findViewById(R.id.image);
            tvName = itemView.findViewById(R.id.text);
            button_1 = itemView.findViewById(R.id.button_1);
            button_2 = itemView.findViewById(R.id.button_2);
        }
    }

    public interface OnItemClickLitener {
        void onItemClick(View view, int position);
    }

    public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener) {
        this.mOnItemClickLitener = mOnItemClickLitener;
    }
}

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private RecyclerView mRecyclerView;
    private RecycleViewAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mRecyclerView = findViewById(R.id.recycler_view);

        //mRecyclerView.setLayoutManager(new GridLayoutManager(MainActivity.this, 2));
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(MainActivity.this);
        mRecyclerView.setLayoutManager(linearLayoutManager);
        mRecyclerView.setHasFixedSize(false);
        List<PhotoBean> list = new ArrayList<>();
        list.add(new PhotoBean("https://img.52z.com/upload/news/image/20180621/20180621055734_59936.jpg", "1"));
        list.add(new PhotoBean("http://pic4.nipic.com/20090910/3218971_153314069210_2.jpg", "2"));
        list.add(new PhotoBean("https://img.pc841.com/2018/0922/20180922111049508.jpg", "3"));
        list.add(new PhotoBean("https://b-ssl.duitang.com/uploads/item/201607/20/20160720161857_NcJZE.jpeg", "4"));
        list.add(new PhotoBean("http://pic31.nipic.com/20130629/110640_043033294000_2.jpg", "5"));
        list.add(new PhotoBean("http://gz.people.com.cn/mediafile/201110/12/F201110121632371556600701.jpg", "6"));
        list.add(new PhotoBean("http://pic39.nipic.com/20140315/2531170_191053321000_2.jpg", "7"));
        list.add(new PhotoBean("http://ftp.gongkong.com/UploadPic/Forum/2010-10/2010100822163800001.jpg", "8"));
        list.add(new PhotoBean("http://pic19.nipic.com/20120326/3403052_123242711000_2.jpg", "9"));
        list.add(new PhotoBean("http://hbimg.b0.upaiyun.com/91d18368338f1723702b104576ab065239b188fe107e6-nL9kfS_fw658", "10"));
        list.add(new PhotoBean("http://i2.w.yun.hjfile.cn/doc/201303/78ebff0b-3b4b-4695-93b7-4b5f62312ce6_08.jpg", "11"));
        adapter = new RecycleViewAdapter(MainActivity.this, list);
        mRecyclerView.setAdapter(adapter);

        adapter.setOnItemClickLitener(new RecycleViewAdapter.OnItemClickLitener() {
            @Override
            public void onItemClick(View view, int position) {
                switch (view.getId()){
                    case R.id.image:
                        Toast.makeText(MainActivity.this, "点击了图片", Toast.LENGTH_SHORT).show();
                        break;
                    case R.id.button_1:
                        Toast.makeText(MainActivity.this, "点击了按钮1", Toast.LENGTH_SHORT).show();
                        break;
                    case R.id.button_2:
                        Toast.makeText(MainActivity.this, "点击了按钮2", Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        });
    }
}

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