I'm attempting to alighn my assist\_update\_btn with the bottom of the screen however it does not seem to do so. For some reason it's sitting just below the TextView and isn't aligning with the bottom of the screen for some reason. 

Any input is greatly appreciated. 

```
<?xml version="1.0" encoding="utf-8"?>
<!-- LinearLayout allows border to expand to entire screen -->
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background"
android:orientation="vertical" >
>

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

            <TextView
                android:id="@+id/apn_app_text_cta2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:layout_marginTop="30sp"
                android:layout_marginLeft="30sp"
                android:layout_marginRight="30sp"
                android:textColor="#000000"
                android:text="@string/apn_app_text_cta2"/>

            <ImageView
                android:id="@+id/assist_update_btn"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/apn_app_text_cta2"
                android:layout_alignParentBottom="true"
                android:layout_centerHorizontal="true"
                android:src="@drawable/btn_next_inactivei" />

        </RelativeLayout>

</ScrollView>

```