我正在尝试使用 Cognito 在我的 Flutter 应用程序中实现身份验证。我正在针对过去一年在我的 React 应用程序中成功使用的现有 userPool 进行身份验证。
但是，使用 Flutter 我无法获取用户的会话。我能够成功登录，但无法使用该fetchAuthSession()方法获取任何令牌。知道为什么会这样吗？这是我的一些工作和非工作代码：
此代码成功...
Future _usersEmail() async {
try {
var attributes = (await Amplify.Auth.fetchUserAttributes()).toList();
for (var attribute in attributes) {
if (attribute.userAttributeKey == 'email') {
print("user's email is ${attribute.value}");
return '${attribute.value}';
}
}
return 'no email';
} on AuthException catch (e) {
return '${e.message}';
}
}
这段代码也成功了...
Future<bool> _isSignedIn() async {
final CognitoAuthSession session =
await Amplify.Auth.fetchAuthSession() as CognitoAuthSession;
print('_isSignedIn: ${session.isSignedIn}');
return session.isSignedIn;
}
此代码返回空...
Future _getIdToken() async {
final CognitoAuthSession session =
await Amplify.Auth.fetchAuthSession() as CognitoAuthSession;
final idToken = session.userPoolTokens?.idToken;
print('idToken: $idToken');
return idToken;
}
这是我的放大配置...
{
"UserAgent": "aws-amplify-cli/2.0",
"Version": "1.0",
"auth": {
"plugins": {
"awsCognitoAuthPlugin": {
"UserAgent": "aws-amplify-cli/0.1.0",
"Version": "0.1.0",
"IdentityManager": {
"Default": {}
},
"CredentialsProvider": {
"CognitoIdentity": {
"Default": {
"PoolId": "us-east-1_abcxyz",
"Region": "us-east-1"
}
}
},
"CognitoUserPool": {
"Default": {
"PoolId": "us-east-1_abcxyz",
"AppClientId": "5j0kii90dJ09est43xh3X21",
"Region": "us-east-1"
}
},
"Auth": {
"Default": {
"authenticationFlowType": "USER_SRP_AUTH"
}
}
}
}
}
}