Handle the Refresh Token on iOS Client

Background

Since the release of Neura iOS SDK version 4.12.0, the user Access Token (used to pull data through Neura's REST API) is expired and refreshed automatically. If you're using the Access Token, you'll need to update your backend every time it's updated on the client side.

First Step - Implement the NeuraAuthenticationDelegate protocol  

Objective-c

@interface YourClass () <NeuraAuthenticationDelegate>

Swift

class YourClass: NSObject, NeuraAuthenticationDelegate {}

 Assign your Class Instance to the Authentication Delegate

NeuraSDK.shared.authenticationDelegate = self

Third Step - Implement Optional Method neuraAuthenticationStateChanged

neuraAuthenticationStateChanged is called every time the authenticationState changed.

Objective-c

(void)neuraAuthenticationStateChanged:(NeuraAuthState)newState {
}

Swift

func neuraAuthenticationStateChanged(newState: NeuraAuthState) {
}

Fourth Step - Implement the Optional Method neuraAccessTokenChanged

neuraAccessTokenChanged is called whenever the value of the access token has changed. It will also be called when the access token is deleted (and nil will be passed as newAccessToken value).

Objective-c

(void)neuraAccessTokenChanged:(NSString *)newAccessToken {}

Swift

func neuraAccessTokenChanged(_ newAccessToken: String?) {}

Reference:

http://docs.theneura.com/ios/Protocols/NeuraAuthenticationDelegate.html#//api/name/neuraAccessTokenChanged: