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;

@Override
protected 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);

}
}