<android.support.constraint.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"
        tools:context="com.esri.arcgisruntime.sample.attributionviewchange.MainActivity">

    <!-- MapView -->
    <com.esri.arcgisruntime.mapping.view.MapView
            android:id="@+id/mapView"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
    </com.esri.arcgisruntime.mapping.view.MapView>

    <android.support.design.widget.FloatingActionButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/floatingActionButton"
            android:layout_marginEnd="8dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:backgroundTint="@android:color/holo_green_dark"
            android:src="@android:drawable/ic_dialog_info"
            android:layout_marginBottom="18dp"/>
</android.support.constraint.ConstraintLayout>

<android.support.constraint.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"
        tools:context="com.esri.arcgisruntime.sample.attributionviewchange.MainActivity">

    <!-- MapView -->
    <com.esri.arcgisruntime.mapping.view.MapView
            android:id="@+id/mapView"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
    </com.esri.arcgisruntime.mapping.view.MapView>

    <android.support.design.widget.FloatingActionButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/floatingActionButton"
            android:layout_marginEnd="8dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:backgroundTint="@android:color/holo_green_dark"
            android:src="@android:drawable/ic_dialog_info"
            android:layout_marginBottom="25dp"/>
</android.support.constraint.ConstraintLayout>

Move fab to sit right on top of the attribution bar
Move fab to sit right on top of the attribution bar
