1 -keep public class * extends android.app.Activity { 2 <init>(); 3 } 4 -keep public class * extends android.app.Service { 5 <init>(); 6 } 7 -keep public class * extends android.content.ContentProvider { 8 <init>(); 9 } 10 -keep public class * extends android.content.BroadcastReceiver { 11 <init>(); 12 } 13 14