title: Android App Background Colour Not Setting
body: <p>I've recently started working on an Android app. I'm not a programming noob, I have been programming in Java since 2009, but this is my first Android app. I have tried following some tutorials on how to set the background colour but it simply isn't working for me. I can't work out what I'm doing wrong.</p>
  
  <p>In my layout directory I have files called: main.xml and view_fact.xml. They both use the linear layout and my LinearLayout Tag is as follows:</p>
  
  <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:background="@color/background_grey"
  &gt;
  </code></pre>
  
  <p>And in my "values" directory I the contents of "strings.xml" is:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;resources&gt;
  &lt;string name="app_name"&gt;Facts&lt;/string&gt;
  &lt;color name="background_grey"&gt;#E8E8E8&lt;/color&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>But the background colour is not changing from the default black.</p>
  
  <p>I've also tried adding: "android:theme="@android:style/Theme.Light"" in my AndroidManifest.xml file.</p>
  
  <p>None of this is working, any suggestions?</p>
  
  <p>Thank you.</p>
  
  <p>On my view_fact.xml page it looks like this:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:background="@color/background_grey"
  &gt;
  &lt;TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="Fact:"
  android:padding="10dp"
  android:textColor="#080808"
  /&gt;
  
  &lt;TextView 
  android:id="@+id/factData"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:padding="10dp"
  android:text=""
  /&gt;
  &lt;Button
  android:id="@+id/anotherFactButton"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="Another Fact"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>What's interesting is that the text in "factData" is grey, while the text: "Fact:" in the Text View above is white, and I've tried to change it's colour to red and it doesn't work. It stays white.</p>
  
  <p>Any suggestions? I still haven't managed to get this working; thank you.</p>