android - 为什么使用KOTLIN在LinearLayoutManager RecyclerView中选择Orientation时会出现这个错误

Question

On Fragment file:

override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)

        recycle_home.layoutManager = LinearLayoutManager( this.context , LinearLayout.VERTICAL ,false )
        recycle_home.adapter = adapter_home()

    }

在此处输入图像描述

Answer 1

 override fun onActivityCreated(savedInstanceState: Bundle?) { super.onActivityCreated(savedInstanceState)

        recycle_home.layoutManager = LinearLayoutManager( this.context)
        recycle_home.adapter = adapter_home()

    }

或者

       override fun onActivityCreated(savedInstanceState: Bundle?) { super.onActivityCreated(savedInstanceState)

            recycle_home.layoutManager = LinearLayoutManager( this.context,RecyclerView.VERTICAL,false)
            recycle_home.adapter = adapter_home()

        }

Answer 2

如果您尝试将布局管理器添加到 RecyclerView，您可以将其添加到 xml 本身

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/emailsRV"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:adapter="@{adapter}"
        android:layoutAnimation="@anim/layout_animation_from_bottom"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        app:layout_constraintBottom_toTopOf="@id/addNewACB"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:listitem="@layout/item_phone" />

然后，如果你想添加方向，你可以将它添加到片段中，或者你甚至可以为相同的创建一个 BindingAdapter

下面是片段/活动的代码

recycle_home.addItemDecoration(DividerItemDecoration(context, LinearLayoutManager.VERTICAL))