-keep public class * extends android.preference.PreferenceFragment {
public <init>(...);
}
+-keep public class * extends android.preference.Preference {
+ public <init>(...);
+}
+#keep library packages
+-keep public class de.schlichtherle.truezip.** {
+ public protected *;
+}
+-keep public class libtruezip.** {
+ public protected *;
+}