Short answer

对于那些已经熟悉setting up a RecyclerView to make a list的人来说，好消息是制作网格基本上是一样的.设置RecyclerView时，只需使用GridLayoutManager而不是LinearLayoutManager.

recyclerView.setLayoutManager(new GridLayoutManager(this, numberOfColumns));

如果你需要更多的帮助，那么看看下面的例子.

Full example

下面是一个如下图所示的最小示例.

从一个空的活动开始.您将执行以下任务来添加RecyclerView网格.你所需要做的就是复制并粘贴每个部分的代码.稍后，您可以根据自己的需要进行定制.

• 将依赖项添加到Gradle
• 为活动和网格单元添加xml布局文件
• 使ReccyclerView适配器
• 在您的活动中初始化ReccyclerView

Update Gradle dependencies

确保app gradle.build文件中存在以下依赖项:

compile 'com.android.support:appcompat-v7:27.1.1'
compile 'com.android.support:recyclerview-v7:27.1.1'

您可以将版本号更新为the most current.

Create activity layout

将RecyclerView添加到xml布局中.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

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

</RelativeLayout>

Create grid cell layout

我们的RecyclerView网格中的每个单元格将只有一个TextView.新建布局资源文件.

recyclerview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:padding="5dp"
    android:layout_width="50dp"
    android:layout_height="50dp">

        <TextView
            android:id="@+id/info_text"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:background="@color/colorAccent"/>

</LinearLayout>

Create the adapter

RecyclerView需要一个适配器来用数据填充每个单元格中的视图.创建一个新的java文件.

MyRecyclerViewAdapter.java

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

    private String[] mData;
    private LayoutInflater mInflater;
    private ItemClickListener mClickListener;

    // data is passed into the constructor
    MyRecyclerViewAdapter(Context context, String[] data) {
        this.mInflater = LayoutInflater.from(context);
        this.mData = data;
    }

    // inflates the cell layout from xml when needed
    @Override
    @NonNull 
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = mInflater.inflate(R.layout.recyclerview_item, parent, false);
        return new ViewHolder(view);
    }

    // binds the data to the TextView in each cell
    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        holder.myTextView.setText(mData[position]);
    }

    // total number of cells
    @Override
    public int getItemCount() {
        return mData.length;
    }


    // stores and recycles views as they are scrolled off screen
    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        TextView myTextView;

        ViewHolder(View itemView) {
            super(itemView);
            myTextView = itemView.findViewById(R.id.info_text);
            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View view) {
            if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
        }
    }

    // convenience method for getting data at click position
    String getItem(int id) {
        return mData[id];
    }

    // allows clicks events to be caught
    void setClickListener(ItemClickListener itemClickListener) {
        this.mClickListener = itemClickListener;
    }

    // parent activity will implement this method to respond to click events
    public interface ItemClickListener {
        void onItemClick(View view, int position);
    }
}

笔记

• 虽然不是严格必要的，但我提供了监听单元格上点击事件的功能.这是在旧的GridView，是一个共同的需要.如果不需要，可以删除此代码.

Initialize RecyclerView in Activity

将以下代码添加到您的主活动中.

MainActivity.java

public class MainActivity extends AppCompatActivity implements MyRecyclerViewAdapter.ItemClickListener {

    MyRecyclerViewAdapter adapter;

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

        // data to populate the RecyclerView with
        String[] data = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48"};

        // set up the RecyclerView
        RecyclerView recyclerView = findViewById(R.id.rvNumbers);
        int numberOfColumns = 6;
        recyclerView.setLayoutManager(new GridLayoutManager(this, numberOfColumns));
        adapter = new MyRecyclerViewAdapter(this, data);
        adapter.setClickListener(this);
        recyclerView.setAdapter(adapter);
    }

    @Override
    public void onItemClick(View view, int position) {
        Log.i("TAG", "You clicked number " + adapter.getItem(position) + ", which is at cell position " + position);
    }
}

笔记

• 请注意，该活动实现了我们在适配器中定义的ItemClickListener.这允许我们在onItemClick中处理单元格单击事件.

Finished

就这样.你现在应该能够运行你的项目，并得到类似于顶部图像的东西.

Going on

圆角

• Use a CardView

自动装配柱

• GridLayoutManager - how to auto fit columns?个

Further study

• Android RecyclerView with GridView GridLayoutManager example tutorial
• Android RecyclerView Grid Layout Example个
• Learn RecyclerView With an Example in Android
• RecyclerView: Grid with header
• Android GridLayoutManager with RecyclerView in Material Design
• Getting Started With RecyclerView and CardView on Android个