问题
I made a Horizontal RecyclerView and it works fine(thanks to this) but the direction of scroll and data are expand from left to right; then How can I change the RecyclerView scroll direction like in the picture below?
My Code:
StaggeredGridLayoutManager staggeredGridLayoutManager =
new StaggeredGridLayoutManager(
2, //The number of Columns in the grid
LinearLayoutManager.HORIZONTAL);
回答1:
Assuming you use LinearLayoutManager in your RecyclerView, then you can pass true as third argument in the LinearLayoutManager constructor.
For example:
mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, true));
If you are using the StaggeredGridLayoutManager, then you can use the setReverseLayout method it provides.
回答2:
You can do it with just xml.
the app:reverseLayout="true" do the job!
<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" />
回答3:
XML approach using androidx:
<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">
回答4:
Horizontal RecyclerView with imageview and textview
xml file
main.xml
<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 Class
ActivityMaim.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);
}}
Adaper Class
CustomAdapter.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;
}}
MyData.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};}
回答5:
In Recycler Layout manager the second parameter is spanCount increase or decrease in span count will change number of elements show on your screen
RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(this, 2, //The number of Columns in the grid
,GridLayoutManager.HORIZONTAL,false);
recyclerView.setLayoutManager(mLayoutManager);
回答6:
Just add two lines of code to make orientation of recyclerview as horizontal. So add these lines when Initializing Recyclerview.
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false);
my_recycler.setLayoutManager(linearLayoutManager);
回答7:
This following code is enough
RecyclerView recyclerView;
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL,true);
recyclerView.setLayoutManager(layoutManager);
回答8:
Try this
I have tried all above answers it's showing me same vertically recycler view, so I have tried another example.
Initialize the adapter
private Adapter mAdapter;set the adapter like this
mAdapter = new Adapter(); LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false); recycler_view.setLayoutManager(linearLayoutManager); recycler_view.setAdapter(mAdapter);
Hope this will also work for you For Complete code please refer this link
回答9:
Try this in fragment
layoutManager = new LinearLayoutManager(getActivity(),LinearLayoutManager.HORIZONTAL,false);
回答10:
It's about Persian language problem, Just need to rotate your ListView, GridView, or .... and after that rotate your cell. You can do it in xml android:rotate="360".
来源：https://stackoverflow.com/questions/37733221/android-horizontal-recyclerview-scroll-direction