title: Android ScrollView not scrolling at all
body: <p>Below is my XML code, I want the whole view to scroll, but it's just not working, please help, with what's wrong;</p>
  
  <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"&gt;
  
  &lt;LinearLayout
      android:orientation="vertical"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
  &lt;ImageView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:src="@drawable/app_icon"
      android:layout_marginTop="20dp"
      android:layout_gravity="center_horizontal"/&gt;
  
  &lt;TextView
      android:id="@+id/textView_app_version"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginTop="20dp"
      android:layout_gravity="center"/&gt;
  
  &lt;TextView
      android:id="@+id/textView_content"
      android:layout_width="match_parent"
      android:layout_marginTop="15dp"
      android:layout_height="386dp"
      android:gravity="center"&gt;&lt;/TextView&gt;
  
  &lt;/LinearLayout&gt;
  &lt;/ScrollView&gt;
  </code></pre>
  
  <p>I've tried using,
         android:fillViewport="true"</p>
  
  <p>but of no help.</p>