title: getDimension()/getDimensionPixelSize() - mutliplier issue
body: <p>So I have android 2.3.5 device which is NORMAL/HDPI. I have a dimens.xml in my project:</p>
  
  <pre><code>...
      &lt;dimen name="gameresult_congrats_label_msg_textSize"&gt;20sp&lt;/dimen&gt;
  ...
  </code></pre>
  
  <p>this file is absolutely identical in values-normal/values-hdpi and so on folders.
  In my first activity app shows me that value using:</p>
  
  <pre><code>Toast.makeText(this, "textSize is "+getResources().getDimensionPixelSize(R.dimen.gameresult_congrats_label_msg_textSize), Toast.LENGTH_SHORT).show();
  </code></pre>
  
  <p>and it displays 30. I Tried also:</p>
  
  <pre><code>Toast.makeText(this, "textSize is "+getResources().getDimension(R.dimen.gameresult_congrats_label_msg_textSize), Toast.LENGTH_SHORT).show();
  </code></pre>
  
  <p>but result is the same. But only when I tried this:</p>
  
  <pre><code>Toast.makeText(this, "textSize is "+getResources().getString(R.dimen.gameresult_congrats_label_msg_textSize), Toast.LENGTH_SHORT).show();
  </code></pre>
  
  <p>I got my "20sp" finally! But why is that? <a href="http://developer.android.com/reference/android/content/res/Resources.html#getDimension%28int%29">Official docs says that those methods</a> returns</p>
  
  <blockquote>
    <p>Resource dimension value multiplied by the appropriate metric.</p>
  </blockquote>
  
  <p>I checked this by changing my value to 25 and I got 38 which means aos uses 1.5 multiplier. But why? It already gets value from appropriate folder which means it gets a ready to use value! From where aos gets that 1.5x multiplier? I know it depends on DisplayMetrics. But how it calculates 1.5x?<br>
  <strong>UPDATE</strong><br>
  I understand about multiplier but, you see, the real problem here is about double scaling. And thats why I did asked this question.<br> 
  So if I have some layout.xml (in res\layout folder) with TexView defined like:</p>
  
  <pre><code>&lt;TextView
      android:id="@+id/congratsLabel"
      ...
      android:textSize="@dimen/gameresult_congrats_label_msg_textSize" /&gt;
  </code></pre>
  
  <p>Everything looks ok. I mean textview is like Im expecting. <br>
  Now lets do the same in code:</p>
  
  <pre><code>TextView congratsLabel = fineViewById(R.id.congratsLabel); 
  textSize = getResources().getDimension(R.dimen.gameresult_congrats_label_msg_textSize)
  congratsLabel.setTextSize(textSize) 
  </code></pre>
  
  <p>and here is the issue!!! getResources().getDimension() returns a <strong>SCALED</strong> value and thats ok. But the resulting size of my textView will be 1.5 greater than I expecting cuz setTextSize works with SP and here comes the second scale! And thats why AOS makes resulting text size scaled to 45 (originally defined as 20sp). </p>