How can I tell ProGuard to keep my function that is used for onClick?

Question

I am using the android:onClick atribute in some of my .xml layout files for my android application, but ProGuard is removing these methods from my code when it runs

Answer 1

According to proguard documentation:

Fields and methods may also be specified using regular expressions. Names can contain the following wildcards: ? matches any single character in a method name. * matches any part of a method name.

so, you will be find specifying

-keep class com.example.MyClass {
  public void listener_*(android.view.View);
}

in your proguard flags.