title: Configure proguard to exclude library jar which extends android.content.Context
body: <p>I'm integrating a library into a device for a project which is going to be embedded into the device OS. For this, we're integrating a library jar which overrides the Android framework Context.</p>
  
  <p>Because of this, trying to enable Proguard for the app gives me the following error - "there were 220 instances of library classes depending on program classes".</p>
  
  <p>All of these files are Widgets and Views. How can I fix this?</p>
  
  <p>This is the content of my proguard-project.txt</p>
  
  <pre><code>-injars      bin/classes
  -outjars     bin/classes-processed.jar
  -libraryjars /Users/me/android-sdk-mac_86/platforms/android-15/android.jar
  -libraryjars libs/library-that-overrides-context.jar
  
  -keep public class * extends android.app.Activity
  -keep public class * extends android.app.Application
  -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.content.Context
  </code></pre>
  
  <p>This is the content of my proguard-android.txt</p>
  
  <pre><code># This is a configuration file for ProGuard.
  # http://proguard.sourceforge.net/index.html#manual/usage.html
  
  -dontusemixedcaseclassnames
  -dontskipnonpubliclibraryclasses
  -verbose
  
  # Optimization is turned off by default. Dex does not like code run
  # through the ProGuard optimize and preverify steps (and performs some
  # of these optimizations on its own).
  -dontoptimize
  -dontpreverify
  # Note that if you want to enable optimization, you cannot just
  # include optimization flags in your own project configuration file;
  # instead you will need to point to the
  # "proguard-android-optimize.txt" file instead of this one from your
  # project.properties file.
  
  -keepattributes *Annotation*
  -keep public class com.google.vending.licensing.ILicensingService
  -keep public class com.android.vending.licensing.ILicensingService
  
  # For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
  -keepclasseswithmembernames class * {
      native &lt;methods&gt;;
  }
  
  # keep setters in Views so that animations can still work.
  # see http://proguard.sourceforge.net/manual/examples.html#beans
  -keepclassmembers public class * extends android.view.View {
     void set*(***);
     *** get*();
  }
  
  # We want to keep methods in Activity that could be used in the XML attribute onClick
  -keepclassmembers class * extends android.app.Activity {
     public void *(android.view.View);
  }
  
  # For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
  -keepclassmembers enum * {
      public static **[] values();
      public static ** valueOf(java.lang.String);
  }
  
  -keep class * implements android.os.Parcelable {
    public static final android.os.Parcelable$Creator *;
  }
  
  -keepclassmembers class **.R$* {
      public static &lt;fields&gt;;
  }
  
  # The support library contains references to newer platform versions.
  # Don't warn about those in case this app is linking against an older
  # platform version.  We know about them, and they are safe.
  -dontwarn android.support.**
  </code></pre>