1.先在布局文件中写

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

2.mainactivity

public class MainActivity extends AppCompatActivity { 
    private RecyclerView mRecyclerView; 
    private ArrayList<String> mDatas=new ArrayList<>(); 
    private MyAdapter myAdapter; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 
        mRecyclerView = findViewById(R.id.my_recycler_view); 
        initDatas(); 
        myAdapter =new MyAdapter(mDatas); 
        mRecyclerView.setAdapter(myAdapter); 
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); 
        //mRecyclerView.setLayoutManager(new GridLayoutManager(this,4)); 
       // mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(4,StaggeredGridLayoutManager.HORIZONTAL)); 
        //配置分割线 
        mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST)); 
        //事件监听 
 
        myAdapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() { 
            @Override 
            public void onClick(View v, int position, String city) { 
                Toast.makeText(MainActivity.this,city,Toast.LENGTH_SHORT).show(); 
            } 
        }); 
 
        int size =mDatas.size(); 
        //添加数据到头部 
        myAdapter.addData(size,"adddddddddd"); 
 
        //删除数据 
        myAdapter.removeData(0); 
    } 
 
    private static final String TAG = "MainActivity"; 
    private void initDatas(){ 
        mDatas.add("aa"); 
        mDatas.add("cv"); 
        mDatas.add("cv1"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
        mDatas.add("cv112"); 
    } 
 
 
}

3.adpter

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> { 
    private static List<String> mData; 
    private static OnItemClickListener mListener; 
    public void setOnItemClickListener (OnItemClickListener listener){ 
        mListener=listener; 
    } 
 
 
    public MyAdapter(List<String> data) { 
        mData = data; 
    } 
 
 
 
    @Override 
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
        // 实例化展示的view 
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.view_rv_item, parent, false); 
        // 实例化viewholder 
        ViewHolder viewHolder = new ViewHolder(v); 
        return viewHolder; 
    } 
 
    @Override 
    public void onBindViewHolder(ViewHolder holder, int position) { 
        // 绑定数据 
        holder.mTv.setText(mData.get(position)); 
    } 
 
    @Override 
    public int getItemCount() { 
        return mData == null ? 0 : mData.size(); 
    } 
 
    public static class ViewHolder extends RecyclerView.ViewHolder { 
 
        TextView mTv; 
 
        public ViewHolder(View itemView) { 
            super(itemView); 
            mTv = (TextView) itemView.findViewById(R.id.item_tv); 
 
            itemView.setOnClickListener(new View.OnClickListener() { 
                @Override 
                public void onClick(View view) { 
                    if(mListener!=null){ 
                        mListener.onClick(view,getLayoutPosition(),mData.get(getLayoutPosition())); 
                    } 
                } 
            }); 
        } 
    } 
 
 
    interface OnItemClickListener{ 
        void onClick(View v,int position,String city); 
 
    } 
 
 
    /* 
    *  @param 添加的位置 
    *  @param 添加的数据 
    * */ 
    public void addData(int position,String city){ 
        mData.add(position,city); 
        notifyItemInserted(position); 
    } 
 
 
    public void removeData(int position){ 
        mData.remove(position); 
        notifyItemRemoved(position); 
    } 
}

单独创建item的布局,view_rv_item.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="45dp"> 
 
    <TextView 
        android:id="@+id/item_tv" 
        android:gravity="center" 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        /> 
</LinearLayout>

item的下划线,要自己写一个类,有点麻烦,直接抄了网上

public class DividerItemDecoration extends RecyclerView.ItemDecoration { 
 
    private static final int[] ATTRS = new int[]{ 
            android.R.attr.listDivider 
    }; 
 
    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL; 
 
    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL; 
 
    private Drawable mDivider; 
 
    private int mOrientation; 
 
    public DividerItemDecoration(Context context, int orientation) { 
        final TypedArray a = context.obtainStyledAttributes(ATTRS); 
        mDivider = a.getDrawable(0); 
        a.recycle(); 
        setOrientation(orientation); 
    } 
 
    public void setOrientation(int orientation) { 
        if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) { 
            throw new IllegalArgumentException("invalid orientation"); 
        } 
        mOrientation = orientation; 
    } 
 
    @Override 
    public void onDraw(Canvas c, RecyclerView parent) { 
//        Log.v("recyclerview - itemdecoration", "onDraw()"); 
 
        if (mOrientation == VERTICAL_LIST) { 
            drawVertical(c, parent); 
        } else { 
            drawHorizontal(c, parent); 
        } 
 
    } 
 
    public void drawVertical(Canvas c, RecyclerView parent) { 
        final int left = parent.getPaddingLeft(); 
        final int right = parent.getWidth() - parent.getPaddingRight(); 
 
        final int childCount = parent.getChildCount(); 
        for (int i = 0; i < childCount; i++) { 
            final View child = parent.getChildAt(i); 
            android.support.v7.widget.RecyclerView v = new android.support.v7.widget.RecyclerView(parent.getContext()); 
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child 
                    .getLayoutParams(); 
            final int top = child.getBottom() + params.bottomMargin; 
            final int bottom = top + mDivider.getIntrinsicHeight(); 
            mDivider.setBounds(left, top, right, bottom); 
            mDivider.draw(c); 
        } 
    } 
 
    public void drawHorizontal(Canvas c, RecyclerView parent) { 
        final int top = parent.getPaddingTop(); 
        final int bottom = parent.getHeight() - parent.getPaddingBottom(); 
 
        final int childCount = parent.getChildCount(); 
        for (int i = 0; i < childCount; i++) { 
            final View child = parent.getChildAt(i); 
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child 
                    .getLayoutParams(); 
            final int left = child.getRight() + params.rightMargin; 
            final int right = left + mDivider.getIntrinsicHeight(); 
            mDivider.setBounds(left, top, right, bottom); 
            mDivider.draw(c); 
        } 
    } 
 
    @Override 
    public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) { 
        if (mOrientation == VERTICAL_LIST) { 
            outRect.set(0, 0, 0, mDivider.getIntrinsicHeight()); 
        } else { 
            outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0); 
        } 
    } 
}

对了,使用之前要配置先的

   api 'com.android.support:recyclerview-v7:26.1.0'

 

这里写了展示和点击事件,比较简单,

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