Proguard没有重命名我的活动类?

我在我的android项目中使用Proguard,它既不是从Activity扩展的Obfuscate类名, onCreateOptionsMenu 等等。这是代码

-optimizationpasses 5

-dontusemixedcaseclassnames

-dontskipnonpubliclibraryclasses

-dontpreverify

-verbose

-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-repackageclasses 'mystore'

-keepclassmembers class * implements android.os.Parcelable {

    static ** CREATOR;
}

-keepclassmembers class **.R$* {

    public static <fields>;
}