如何将水平回收站视图扩展到垂直

Question

我使用正常的recyclerview并设置为LinearLayoutManager.HORIZONTAL，现在当我单击按钮recyclerview时应展开为垂直，如果再次单击该按钮，则应重新设置为水平{再次{1}}。

recylerview

onButtonClick

  <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/white"
            android:orientation="horizontal"
            android:layout_marginTop="10dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/topCategoryTxt" />

条件始终为0 如何动态更改 谢谢

Answer 1

boolean orientaion = false

if (!orientaion) {
                layoutManager = new LinearLayoutManager(HomeScreen.this, LinearLayoutManager.VERTICAL, false);
                recyclerview.setLayoutManager(layoutManager);
                recyclerview.setAdapter(popularItemsAdapter);
                adapter.notifyDataSetChanged();
                orientaion=true;
            }else{
      layoutManager = new LinearLayoutManager(HomeScreen.this, LinearLayoutManager.HORIZONTAL, false);
                recyclerview.setLayoutManager(layoutManager);
                recyclerview.setAdapter(popularItemsAdapter);
                adapter.notifyDataSetChanged();
                orientaion=false;
}