Pixelcat-App-Android/app/src/main/res/layout/activity_settings.xml

<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/settingsAppbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/pixelcat_gradient">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/settingsToolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:navigationIcon="@drawable/ic_arrow_back"
            app:title="@string/title_settings"
            app:titleTextAppearance="@style/TextAppearanceToolbar"
            app:titleTextColor="#fff" />

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/settings"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>