How can i save usersession locally?

[udaysagartammina]

I am working with a phone number and opt login. I entered the phone number pass the phone number value in step1 and I received opt entered the value in step2. The enter flow is working fine, my concession is once I removed the app instance I got this error Unhandled Exception: LateInitializationError: Field 'userSession' has not been initialized.

final userPool = CognitoUserPool( 'us-east-1_123asd4', 'zxcsdcew433432dd', );

Step1: cognitoUser = CognitoUser(phonenumber, userPool); try { CognitoUserSession? cognitoUserSession = await cognitoUser.initiateAuth( AuthenticationDetails( authParameters: [ AttributeArg( name: 'phone_number', value: "+911234567890", ), ], ), ); print("login success>>>>>$cognitoUserSession"); } on CognitoClientException catch (e) { print("login failed>>>>>$e"); } catch (e){ print("login >>>>>$e"); }

Step2: CognitoUserSession? cognitoUserSession = await cognitoUser.sendCustomChallengeAnswer(otp); print("jwtToken >>>>>$cognitoUserSession!.idToken.jwtToken.toString()"); print("refreshToken >>>>>$cognitoUserSession.refreshToken!.token.toString()");

Thanks in advance.

[Lorenzohidalgo]

There is an example for this in the README and you can review this issue on how to refresh token to keep session valid.

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