proxy works in REPL but not when building

[krisc]

I have a DatePickerDialog in my app. I am using proxy to make an instance of an anonymous class. It works fine through the REPL. But when I run lein droid build it does not compile:

Exception in thread "main" java.lang.RuntimeException: Stub!, compiling:(main.clj:61:3)

Here is the (unfinished) code for my proxy object:

(def date-picker 
  (proxy [DialogFragment] []
    (onCreateDialog [savedInstanceState]
      (let [c (Calendar/getInstance)
            year (.get c Calendar/YEAR)
            month (.get c Calendar/MONTH)
            day (.get c Calendar/DAY_OF_MONTH)]
        (DatePickerDialog. myActivity this year month day)))))

I tried adding a declare statement near the top of my code, but apparently that isn't the problem:

(declare android.app.DialogFragment date-picker)

[alexander-yakushev]

Hello Kris,

Don't use def for that kind of thing. def statements are executed during AOT compilation, so the compiler tries to run the code you pass to def (which it obviously can't do because your computer is not Android).

Put defn instead of def and it will be fine.

[krisc]

You're right, I should write a constructor via defn. Thanks!