<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
<FrameLayout
    android:id="@+id/controller_frame"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/black"
>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="触控板\n请保持手机横屏"
        android:textSize="@dimen/sp_25"
        android:textColor="@color/white"
        />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>