Android Horizo ntal RecyclerView滚动方向

Question

我做了一个Horizo​​ntal RecyclerView，它工作正常（感谢this）但滚动和数据的方向从左到右扩展;那么如何更改RecyclerView滚动方向，如下图所示？

我的代码：

StaggeredGridLayoutManager staggeredGridLayoutManager =
                new StaggeredGridLayoutManager(
                        2, //The number of Columns in the grid
                        LinearLayoutManager.HORIZONTAL);

Answer 1

假设您在RecyclerView中使用LinearLayoutManager，那么您可以将true作为LinearLayoutManager构造函数中的第三个参数传递。

例如：

mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, true));

如果您使用的是StaggeredGridLayoutManager，那么您可以使用它提供的setReverseLayout方法。

Answer 2

这是关于波斯语的问题，只需要旋转你的ListView，GridView或....然后旋转你的单元格。你可以在xml android：rotate =“360”中完成。

Answer 3

你可以用xml来做。

应用程序：reverseLayout =“true”完成工作！

<android.support.v7.widget.RecyclerView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:divider="@null"
                        android:orientation="horizontal"
                        app:reverseLayout="true"
                        app:layoutManager="android.support.v7.widget.LinearLayoutManager" />

Answer 4

与imageview和textview的水平的RecyclerView

xml文件

main.xml中

<LinearLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:layout_marginTop="5dp"
   android:orientation="vertical"
   android:background="#070e94">
<View
    android:background="#787878"
    android:layout_width="match_parent"
    android:layout_height="1dp"
    />
<android.support.v7.widget.RecyclerView
    android:id="@+id/wallet"
    android:background="#070e94"
    android:layout_width="match_parent"
    android:layout_height="100dp"/>

item.xml

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="100dp"
android:layout_height="match_parent"
android:layout_marginTop="5dp">
<ImageView
    android:id="@+id/image"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:scaleType="fitXY"
    android:src="@drawable/bus"
    android:layout_gravity="center"/>
<TextView
    android:textColor="#000"
    android:textSize="12sp"
    android:layout_gravity="center"
    android:padding="5dp"
    android:id="@+id/txtView"
    android:textAlignment="center"
    android:hint="Electronics"
    android:layout_width="80dp"
    android:layout_height="wrap_content" />

Java类

activity Mai萌.Java

public class MainActivity extends AppCompatActivity{
private  RecyclerView  horizontal_recycler_view;
private ArrayList<Arraylist> horizontalList;
private CustomAdapter horizontalAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    horizontal_recycler_view= (RecyclerView) findViewById(R.id.horizontal_recycler_view);
    horizontalList = new ArrayList<Arraylist>();
    for (int i = 0; i < MyData.nameArray.length; i++) {
        horizontalList.add(new Arraylist(
                MyData.nameArray[i],
                MyData.drawableArray[i]
        ));
    }
    horizontalAdapter=new CustomAdapter(horizontalList);
    LinearLayoutManager horizontalLayoutManagaer
            = new LinearLayoutManager(MainActivity.this, LinearLayoutManager.HORIZONTAL, false);
    horizontal_recycler_view.setLayoutManager(horizontalLayoutManagaer);
    horizontal_recycler_view.setAdapter(horizontalAdapter);
}}

更便宜的类

custom adapter.Java

public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder> {

private ArrayList<Arraylist> dataSet;

public static class MyViewHolder extends RecyclerView.ViewHolder {

    TextView textViewName;

    ImageView imageViewIcon;

    public MyViewHolder(View itemView) {
        super(itemView);
        this.textViewName = (TextView) itemView.findViewById(R.id.txtView);
        //this.textViewVersion = (TextView) itemView.findViewById(R.id.textViewVersion);
        this.imageViewIcon = (ImageView) itemView.findViewById(R.id.image);
        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v)
            {
                if (getPosition()==0)
                {
                    Toast.makeText(v.getContext(), " On CLick one", Toast.LENGTH_SHORT).show();

                } if (getPosition()==1)
                {
                    Toast.makeText(v.getContext(), " On CLick Two", Toast.LENGTH_SHORT).show();

                } if (getPosition()==2)
                {
                    Toast.makeText(v.getContext(), " On CLick Three", Toast.LENGTH_SHORT).show();

                } if (getPosition()==3)
                {
                    Toast.makeText(v.getContext(), " On CLick Fore", Toast.LENGTH_SHORT).show();

                }

            }
        });
    }
}

public CustomAdapter(ArrayList<Arraylist> data) {
    this.dataSet = data;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent,
                                       int viewType) {
    View view = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.card_view, parent, false);

    //view.setOnClickListener(MainActivity.myOnClickListener);

    MyViewHolder myViewHolder = new MyViewHolder(view);
    return myViewHolder;
}

@Override
public void onBindViewHolder(final MyViewHolder holder, final int listPosition) {

    TextView textViewName = holder.textViewName;
   // TextView textViewVersion = holder.textViewVersion;
    ImageView imageView = holder.imageViewIcon;

    textViewName.setText(dataSet.get(listPosition).getName());
    //textViewVersion.setText(dataSet.get(listPosition).getVersion());
    imageView.setImageResource(dataSet.get(listPosition).getImage());
}

@Override
public int getItemCount() {
    return dataSet.size();
}}

ArrayList.Java

public class Arraylist{
String name;
int image;

public Arraylist(String name, int image) {
    this.name = name;
    this.image=image;
}
public String getName() {
    return name;
}
public int getImage() {
    return image;
}}

my data.Java

public class MyData {
static String[] nameArray = {"Gas", "Insurance", "Electronics", "Other Services"};
static Integer[] drawableArray = {R.drawable.gas_gas, R.drawable.insurance, R.drawable.electric, R.drawable.services};}

Answer 5

只需添加两行代码即可将recyclerview的方向设置为水平。因此，在初始化Recyclerview时添加这些行。

  LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false);

my_recycler.setLayoutManager(linearLayoutManager);

Answer 6

使用androidx的XML方法：

<androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:id="@+id/my_recycler_view"
        android:orientation="horizontal"
        tools:listitem="@layout/my_item"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" 
        android:layout_height="wrap_content">

Answer 7

在Recycler Layout Manager中，第二个参数是spanCount，跨度计数的增加或减少将改变屏幕上显示的元素数量

    RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(this, 2, //The number of Columns in the grid
,GridLayoutManager.HORIZONTAL,false);
                recyclerView.setLayoutManager(mLayoutManager);

Answer 8

Try this

我已经尝试了以上所有答案，它向我展示了相同的垂直回收视图，所以我尝试了另一个例子。

1. 初始化适配器 private Adapter mAdapter;
2. 像这样设置适配器

   mAdapter = new Adapter();
   LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false);
   recycler_view.setLayoutManager(linearLayoutManager);
   recycler_view.setAdapter(mAdapter);

希望这也适合你。完整代码请参考this链接

Answer 9

在片段中尝试这个

layoutManager = new LinearLayoutManager（getActivity（），LinearLayoutManager.HORIZONTAL，false）;

Answer 10

以下代码就足够了

RecyclerView recyclerView;
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL,true);

 recyclerView.setLayoutManager(layoutManager);