title: ScrollView or its parent is useless
body: <pre><code>&lt;RelativeLayout 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"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context=".MainActivity" &gt;
  
     &lt;ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" &gt;
  
        &lt;LinearLayout
           android:layout_width="fill_parent"
           android:layout_height="wrap_content"
           android:orientation="vertical" &gt;
  
           &lt;TextView
              android:id="@+id/tvDisplay"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text="@string/hello_world" /&gt;
  
        &lt;/LinearLayout&gt;
    &lt;/ScrollView&gt;
  </code></pre>
  
  <p></p>
  
  <p>the titanium studio keeps on telling me that that ScrollView layout or its RelativeLayout parent is useless. What is wrong with my xml?</p>