title: IllegalArgumentException using actionbarsherlock with proguard
body: <p>My project works fine without Proguard, ie install the apk generated by Eclipse when I run the project and install it on Samsung Galaxy device and all is well. But when I try to export a signed apk using Proguard, exports it fine, but when I try to run the application does not work. I installed the apk on an emulator to see the exception off Logcat and it returns me is this:</p>
  
  <pre><code>11-28 02:28:33.709: E/AndroidRuntime(853): FATAL EXCEPTION: main
  11-28 02:28:33.709: E/AndroidRuntime(853): java.lang.ExceptionInInitializerError
  11-28 02:28:33.709: E/AndroidRuntime(853):  at    com.actionbarsherlock.app.SherlockActivity.c(Unknown Source)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at com.actionbarsherlock.app.SherlockActivity.setContentView(Unknown Source)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at com.linxter.allaware.views.AllAwareActivity.a(Unknown Source)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at   com.linxter.allaware.views.StartupActivity.onCreate(Unknown Source)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.Activity.performCreate(Activity.java:4465)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.ActivityThread.access$600(ActivityThread.java:123)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.os.Handler.dispatchMessage(Handler.java:99)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.os.Looper.loop(Looper.java:137)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at android.app.ActivityThread.main(ActivityThread.java:4424)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at java.lang.reflect.Method.invokeNative(Native Method)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at java.lang.reflect.Method.invoke(Method.java:511)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at dalvik.system.NativeStart.main(Native Method)
  11-28 02:28:33.709: E/AndroidRuntime(853): Caused by: java.lang.IllegalArgumentException: Class a is not annotated with @Implementation
  11-28 02:28:33.709: E/AndroidRuntime(853):  at com.actionbarsherlock.a.a(Unknown Source)
  11-28 02:28:33.709: E/AndroidRuntime(853):  at com.actionbarsherlock.a.&lt;clinit&gt;(Unknown Source)
  11-28 02:28:33.709: E/AndroidRuntime(853):  ... 18 more
  </code></pre>
  
  <p>I using the latest version of Proguard, version 4.8 and the latest version also ActionBarSherlock, 4.2.0. This is part of my Proguard configuration file:</p>
  
  <pre><code>-ignorewarnings
  -target 1.6
  -optimizationpasses 5
  -printmapping mapping.txt
  # -overloadaggressively
  -dontskipnonpubliclibraryclasses
  -dontpreverify
  -verbose
  -dump class_files.txt
  -printseeds seeds.txt
  -printusage unused.txt
  
  # The -optimizations option disables some arithmetic simplifications that Dalvik 1.0 and 1.5 can't handle.
  -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
  
  # Recommended configuration for ActionBarSherlock on http://actionbarsherlock.com/faq.html
  -keep class android.support.v4.app.** { *; }
  -keep interface android.support.v4.app.** { *; }
  -keep class com.actionbarsherlock.** { *; }
  -keep interface com.actionbarsherlock.** { *; }
  -keepattributes *Annotation*
  
  # Keep classes which are entry points.
  -keep public class * extends android.app.Activity
  -keep public class * extends android.app.Service
  -keep public class * extends android.content.BroadcastReceiver
  -keep public class * extends android.content.ContentProvider
  -keep public class * extends android.app.Application
  
  
  -keep public class * extends android.view.View {
      public &lt;init&gt;(android.content.Context);
      public &lt;init&gt;(android.content.Context, android.util.AttributeSet);
      public &lt;init&gt;(android.content.Context, android.util.AttributeSet, int);
      public void set*(...);
  }
  
  # Also keep - Enumerations. Keep the special static methods that are required in
  # enumeration classes.
  -keepclassmembers enum  * {
      public static **[] values();
      public static ** valueOf(java.lang.String);
  }
  
  # Keep names - Native method names. Keep all native class/method names.
  -keepclasseswithmembers,allowshrinking class * {
      native &lt;methods&gt;;
  }
  </code></pre>
  
  <p>What is wrong? I appreciate any help. Thank you.</p>