How can I get the Access token and refresh token?
Theare are 2 ways to get these tokens depending on whether using SDK or not.
1.when using SDK
SDK programs automatically get these tokens.
Be sure to update these tokens with new one on every API calling
2.when not using SDK
1.get uid, state with the API( https://base.next-engine.org/users/sign_in/ )
2.get tokens using those uid, state through the API( https://api.next-engine.org/api_neauth/ )
For more detail, see the link belowhttps://developer.next-engine.com/api/api_v1_sign_inhttps://developer.next-engine.com/api/api_v1_neauth