Android List View Image Issue

I have Created a Listview, and I am trying to add Images to some entries in the Listview. However when doing that I seem to get strange results, the Image appears much smaller than it should. Despite the fact that I have set its Width to Fill_Parent. Here is the XML code:

<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="match_parent">

...

<ImageView
    android:id="@+id/webImage"
    android:layout_below="@id/link"
    android:layout_toLeftOf="@+id/ll"
    android:layout_alignBottom="@id/ll"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:padding="8dp" />


<HorizontalScrollView
    android:id="@+id/sv"
    android:layout_marginLeft="6dp"
    android:layout_marginBottom="3dp"
    android:layout_below="@id/webImage"
    android:layout_toLeftOf="@+id/ll"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <LinearLayout
        android:orientation="horizontal"
        android:gravity="center_vertical"
        android:id="@+id/tag_container"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</HorizontalScrollView>

<LinearLayout
    android:layout_margin="4dp"
    android:layout_alignParentRight="true"
    android:id="@+id/ll"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent">

    ...

</LinearLayout>

</RelativeLayout>

Here is the Result:

As you can see, the images are not showing up as intended and some are smaller than others. The Images should span across the entire screen.