在ios中使用amazon cognito调用GetID

我下面是亚马逊的这篇博文：

我已建立了以下设置：

AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1 identityPoolId:@"IdentityPool"];

AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:credentialsProvider];

AWSServiceManager.defaultServiceManager.defaultServiceConfiguration = configuration;

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在iOS中如何调用GetID？

您必须

GetID

，然后刷新凭据。首先要做：

Obj-C：

// Retrieve your Amazon Cognito ID
[[credentialsProvider getIdentityId] continueWithBlock:^id(AWSTask *task) {
    if (task.error) {
        NSLog(@"Error: %@", task.error);
    }
    else {
        // the task result will contain the identity id
        NSString *cognitoId = task.result;
    }
    return nil;
}];

斯威夫特：

// Retrieve your Amazon Cognito ID
credentialsProvider.getIdentityId().continueWithBlock { (task: AWSTask!) -> AnyObject! in
    if (task.error != nil) {
        print("Error: " + task.error.localizedDescription)
    }
    else {
        // the task result will contain the identity id
        let cognitoId = task.result
    }
    return nil
}

然后刷新：

- (BFTask *)getIdentityId {
    if (self.identityId) {
        return [BFTask taskWithResult:self.identityid];
    } else {
        return [[BFTask taskWithResult:nil] continueWithBlock:^id(BFTask *task) {
            if (!self.identityId) {
                return [self refresh];
            }
            return [BFTask taskWithResult:self.identityid];
        }];
    }
}

- (BFTask *)refresh {
    return [[BFTask taskWithResult:nil] continueWithBlock:^id(BFTask *task) {
          // make a call to your backend, passing logins on provider
          MyLoginResult *result = [MyLogin login:user password:password withLogins:self.logins];
          // results should contain identityid and token, set them on the provider
          self.token = result.token;
          self.identityId = result.identityId;
          // not required, but returning the identityId is useful
          return [BFTask taskWithResult:self.identityid]; 
    }];
}

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从文档

到self is，不要使用IdentityPool名称，而是使用示例代码中提供的池Id。这是否仍然相关：