<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:fillViewport="true"
    android:background="#e2e2e2">

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/bgnLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <include
            layout="@layout/trElement"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp" />

        <LinearLayout
            android:id="@+id/stopslayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:layout_margin="16dp"
            android:showDividers="middle"
            android:divider="@drawable/divider">

        </LinearLayout>


    </LinearLayout>

</ScrollView>

Button mpbtn = ButtonFactory.makeButton(m, R.string.openMap, R.color.AndroidBlue);
LinearLayout bgnLayout = (LinearLayout) rootView.findViewById(R.id.bgnLayout);
bgnLayout.addView(mpbtn);

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/parentLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
          >
    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true"
        android:background="#e2e2e2">
    /////



    </ScrollView>

    <Button
     android:layout_width="wrap_content"
        android:layout_height="wrap_content"
      android:layout_alignParentBottom="true"
    />
    </RelativeLayout>