Property must be initialized or be abstract

Question

It must be stupid question, but I\'m really new to Kotlin and I didn\'t find any solution.

How to declare class field? Like we can have it in java:

prote         


        

Answer 1

Pulling this out of the comments from Alexander Udalov's answer for visibility. For nullable properties:

protected var sharedPreferences : SharedPreferences? = null

...and assign it a value later.