anotherim/src/main/res/layout/activity_show_location.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

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

            <com.google.android.material.appbar.MaterialToolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="?attr/actionBarSize" />

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

        <org.osmdroid.views.MapView
            android:id="@+id/map"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_below="@id/app_bar_layout" />

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_alignParentBottom="true"
            android:layout_gravity="end|bottom"
            android:layout_margin="16dp"
            android:contentDescription="@string/action_unfix_from_location"
            android:src="@drawable/ic_directions_24dp" />
    </RelativeLayout>
</layout>