RecyclerView中ListView GridView 一行显示 多行显示

 导入依赖

compile 'com.android.support:recyclerview-v7:25.3.1'//效果//布局文件
<LinearLayout 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:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.bwei.administrator.dianshang.activity.FirstActivity">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content">        <Button            android:onClick="listview"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="match_parent"            android:text="listview"            />        <Button            android:onClick="gridview"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="match_parent"            android:text="gridview"            />        <Button            android:onClick="yihang"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="match_parent"            android:text="一行"            />        <Button            android:onClick="duohang"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="match_parent"            android:text="多行"            />    </LinearLayout>    <android.support.v7.widget.RecyclerView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/recycle_view"        ></android.support.v7.widget.RecyclerView></LinearLayout>

===============mainActivity===============
   
private RecyclerView recyclerView;private List<String> list;private SimpleRecycleAdapter simpleRecycleAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_first);    //获取控件    recyclerView = (RecyclerView) findViewById(R.id.recycle_view);        //数据源    list = new ArrayList<>();    for (int i=0;i<1000;i++){        list.add("条目"+i);    }    //设置布局管理器    recyclerView.setLayoutManager(new LinearLayoutManager(FirstActivity.this,LinearLayoutManager.VERTICAL,false));    //设置适配器    simpleRecycleAdapter = new SimpleRecycleAdapter(FirstActivity.this, list);    recyclerView.setAdapter(simpleRecycleAdapter);}//listview按钮的点击事件public void listview(View view){    recyclerView.setLayoutManager(new LinearLayoutManager(FirstActivity.this,LinearLayoutManager.VERTICAL,false));    simpleRecycleAdapter.notifyDataSetChanged();}//gridview按钮的点击事件public  void gridview(View view){    recyclerView.setLayoutManager(new GridLayoutManager(FirstActivity.this,3));    simpleRecycleAdapter.notifyDataSetChanged();} //一行按钮的点击事件public void yihang(View view){   recyclerView.setLayoutManager(new LinearLayoutManager(FirstActivity.this,LinearLayoutManager.HORIZONTAL,false));    simpleRecycleAdapter.notifyDataSetChanged();}//多行按钮的点击事件   public  void duohang(View view){     recyclerView.setLayoutManager(new GridLayoutManager(FirstActivity.this,3, OrientationHelper.HORIZONTAL,false));   }
------------------适配器-------------------
  
public class SimpleRecycleAdapter extends RecyclerView.Adapter<SimpleHolder> {    Context context;    List<String> list;    public SimpleRecycleAdapter(Context context, List<String> list) {        this.context = context;        this.list = list;    }    @Override    public SimpleHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(android.R.layout.simple_list_item_1, parent, false);         SimpleHolder simpleHolder=new SimpleHolder(view);        return simpleHolder;    }    @Override    public void onBindViewHolder(SimpleHolder holder, int position) {        holder.textView.setText(list.get(position));    }    @Override    public int getItemCount() {        return list.size();    }}
————————————泛型holder——————————————————
   
public class SimpleHolder extends RecyclerView.ViewHolder {    public TextView textView;    public SimpleHolder(View itemView) {        super(itemView);        textView = (TextView) itemView.findViewById(android.R.id.text1);    }}