title: NoClassDefFoundError for OkHttpClient
body: <p>After adding the facebook dependency in gradle I'm getting this runtime error:</p>
  
  <pre><code>     compile 'com.facebook.android:facebook-android-sdk:4.6.0'
  </code></pre>
  
  <p>Please notice that I'm also using okhttp: </p>
  
  <pre><code>    compile 'com.squareup.okhttp:okhttp:2.5.0'
  </code></pre>
  
  <p>and error log is:</p>
  
  <pre><code> E/AndroidRuntime: FATAL EXCEPTION: Thread-109754
       Process: com.venkat.project, PID: 4453
              java.lang.NoClassDefFoundError: com.squareup.okhttp.internal.Util
              at com.squareup.okhttp.OkHttpClient.&lt;clinit&gt;(OkHttpClient.java:57)
              at com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:127)
              at com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:61)
              at java.lang.Thread.run(Thread.java:841)
  02-23 18:11:02.729 4453-4573/com.venkat.project I/dalvikvm: Rejecting re-init on previously-failed class Lcom/squareup/okhttp/OkHttpClient; v=0x0
  </code></pre>
  
  <p>Note: I'm getting this error on Samsung mobile 4.4 but on the emulator and on <code>moto g 5.0</code> it works.</p>