title: openRawResource() throws always a NotFoundException
body: <p>I want to load a keystore in my Android application. I have copied the key (<code>truststore.bks</code>) into the folder <code>res/raw</code>.  The SDK from Android generate the R.java with a entry for trustsotre. In the App in try to use: 
  <code>Resources.getSystem().openRawResource(R.raw.truststore);</code> </p>
  
  <p>But I get always a exception: 
  <code>android.content.res.Resources$NotFoundException: Resource ID #0x7f040000</code></p>
  
  <p>I look into the apk File und saw the truststore.bks file is in the folder<code>res/raw/</code>.</p>
  
  <p>What is my misstake?</p>