NullPointerException addToRequestQueue(com.android.volley.Request, java.lang.String)' on a null object reference

Question

I\'m using AndroidHive register login and it\'s working fine in example project of this login-register.

But after many attempts trying it with CardViews

Answer 1

Please check if you've initialized your requestQueue object as :

requestQueue = Volley.newRequestQueue(this);