android中RecyclerView控件的列表项横向排列

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linearLayout"
    android:layout_width="150dp"
    android:layout_height="match_parent"
    android:minWidth="400dp">

    <ImageView
        android:id="@+id/newsPic"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:adjustViewBounds="false"
        android:src="@drawable/o1"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/newsTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:text="TextView"
        app:layout_constraintTop_toBottomOf="@+id/newsPic" />
</android.support.constraint.ConstraintLayout>

package com.example.chenrui.app1;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.LinearLayout;

import com.example.chenrui.common.News;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

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

        List<News> newsList = new ArrayList();
        newsList.add(new News("新闻标题1",R.drawable.o1));
        newsList.add(new News("新闻标题2",R.drawable.o2));
        newsList.add(new News("新闻标题3",R.drawable.o3));
        newsList.add(new News("新闻标题4",R.drawable.o4));
        newsList.add(new News("新闻标题5",R.drawable.o5));
        NewsAdapter newsAdapter = new NewsAdapter(newsList);

        RecyclerView view = findViewById(R.id.list1);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
        view.setLayoutManager(layoutManager);
        view.setAdapter(newsAdapter);
    }
}