<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container"
    android:layout_width="match_parent" android:layout_height="match_parent"
    tools:context=".ParentActivity" tools:ignore="MergeRootFrame" />
<!-- From: file:/Users/benjamin/android/BluetoothLightControl/app/src/main/res/layout/parent_activity.xml -->