Android Horizontal RecyclerView scroll Direction

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">

Edit

Use reverseLayout property to change scroll direction.

app:reverseLayout="true"

(Thanks to
@Mostafa Imani for this)

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.

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" />