title: Android studio: String resources showing in design view, not in emulator
body: <p>When creating both TextView and Buttons, when a resource is set to be the text</p>
  
  <pre><code>tools:text="@string/testString"
  </code></pre>
  
  <p>it will show on the design view for the XML, however when running the app, the buttons or texts show the values from the hardcoded text, or appear blank if they don't exist.</p>
  
  <pre><code>android:text="Something else"
  </code></pre>
  
  <p>The strings.xml resource is readable however, as changing the name of the app for the title view works.</p>
  
  <p>This happens on EVERY Android activity so far, even in brand new projects. I have tried uninstalling and reinstalling the studio, all the APKs.</p>