Gadgetbridge/app/src/main/res/layout/activity_supercars_control.xml

<?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">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:ignore="MissingConstraints">

        <nodomain.freeyourgadget.gadgetbridge.devices.supercars.JoystickView
            android:id="@+id/joystickLeft"
            android:layout_width="wrap_content"
            android:layout_height="300dp"
            android:layout_weight="1" />

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

            <CheckBox
                android:id="@+id/turboMode"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/supercars_turbo_speed_label" />

            <CheckBox
                android:id="@+id/lightsOn"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/supercars_lights_label" />

        </LinearLayout>
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>