It is suggested to use $
in order not to confuse the outer class name with the package name. So $
when you want to refer to an InnerClass
and .
when referring to the package.
For example if Helper
is a package name then (lowercase is suggested for package names):
<service android:name=".helper.LocationService"/>
where if Helper
is a class and LocationService
is an inner class defined inside Helper
<service android:name=".Helper$LocationService"/>
1
solved Why use ‘$’ instead of ‘.’? [closed]