title: AppCompat v22: Reference new interpolators via XML
body: <p>I've been trying to take advantage of the new interpolators now available in v22 of the support library (FastOutLinearIn, etc).  More specifically, I'd like to reference them via XML.</p>
  
  <p>I tried using @android:interpolator/fast_out_linear_in but LINT tells me that's the v21+ version.  I tried digging around elsewhere and found nothing that looked like it could help.</p>
  
  <p>I also tried to create custom interpolators like this: (in <em>my_linear_out_slow_in.xml</em>)</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;linearOutSlowInInterpolator /&gt;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.v4.view.animation.LinearOutSlowInInterpolator          
     xmlns:android="http://schemas.android.com/apk/res/android" /&gt;
  </code></pre>
  
  <p>but they don't work in Lollipop or prior versions:  The activity transitions no longer appear, leaving the app in a state where the old activity is still visible but unresponsive because, I assume, the new activity is considered active but isn't being rendered.  Before the upgrade, when the v21+ styles used the new (non-compat) interpolators, it worked fine.</p>