安卓直播间RecyclerView宽度

<androidx.recyclerview.widget.RecyclerView
    android:layout_width="200dp"
    android:layout_height="match_parent"
    ... />

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">

    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        ... />

    <View
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        ... />

</LinearLayout>

RecyclerView recyclerView = findViewById(R.id.recyclerView);
GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
recyclerView.setLayoutManager(layoutManager);