FragmentLayout

<FrameLayout 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"
    tools:context=".MapActivity" >

    <fragment xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:map="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_height="fill_parent"
        android:layout_width="fill_parent"
        tools:context="com.example.beckah.myapplication.Citisplore"/>

    <ImageButton
        android:id="@+id/imageButton1"
        android:background="@drawable/transit_icon"
        android:layout_width="55dp"
        android:layout_height="55dp"
        android:scaleType="fitCenter"
        android:layout_gravity="right|bottom" />

</FrameLayout>