MpRemote/app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".MainActivity">
    <!-- 自定义 Toolbar -->
    <include
        android:id="@+id/toolbar"
        layout="@layout/toolbar" />

    <Button
        android:id="@+id/selectWifi"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="40dp"
        android:layout_marginRight="15dp"
        android:background="@drawable/rounded_button"
        android:text="第一步：连接WIFI"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/toolbar" />

    <Button
        android:id="@+id/control"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="40dp"
        android:layout_marginRight="15dp"
        android:background="@drawable/rounded_button"
        android:text="第二步：进入控制页面"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/selectWifi" />


    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.5" />


</androidx.constraintlayout.widget.ConstraintLayout>