title: Android transition not working on phone
body: <p>I created some transitions between activities that are working fine in the emulator, but nothing of them can be seen on the phone (neither fade in-out nor slide). The new activity simply appears like I have not implemented any transitions. Why is that?</p>
  
  <p>fadein.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;alpha xmlns:android="http://schemas.android.com/apk/res/android"
     android:interpolator="@android:anim/accelerate_interpolator"
     android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="1000" /&gt;   
  </code></pre>
  
  <p>fadeout.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
      &lt;alpha xmlns:android="http://schemas.android.com/apk/res/android"
         android:interpolator="@android:anim/accelerate_interpolator"
         android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="1000" /&gt;
  </code></pre>
  
  <p>And i set in the appropriate activity</p>
  
  <pre><code> overridePendingTransition(R.anim.fadein, R.anim.fadeout);
  </code></pre>