当我尝试登录iOS SDK时无法通过FBSDKLoginKit获取访问令牌 [英] Unable to get the access token through FBSDKLoginKit when I am try to login in iOS sdk

问题描述

我正在使用facebook sdk在facebook上共享文本，但是在尝试登录时无法获取访问令牌.登录成功完成，但未获得任何访问令牌. 因此，如果没有访问令牌，我将无法在Facebook上共享文本. 我的代码如下

I am using facebook sdk to share text on facebook but unable to get access token when try to login. login is done successfully but did not get any access token. So without access token I am unable to share the text on facebook. My code are as follows

FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
[login logInWithReadPermissions:@[@"public_profile"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {


if ([result.token hasGranted:@"publish_actions"]) {
    [[[FBSDKGraphRequest alloc]
      initWithGraphPath:@"me/feed"
      parameters: @{ @"message" : @"hello world"}
      HTTPMethod:@"POST"]
     startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
         if (!error) {
             NSLog(@"Post id:%@", result[@"id"]);
         }
     }];
}

if (error) {
    // Process error
} else if (result.isCancelled) {

    // Handle cancellations
} else {
    // If you ask for multiple permissions at once, you
    // should check if specific permissions missing
    if ([result.grantedPermissions containsObject:@"email"]) {
        // Do work
    }
}

}];

我在FBSDKLoginManager对象的处理程序块中获取了结果，没有错误，但是它不包含令牌或其他数据

i get the result in handler block of FBSDKLoginManager object without error but it does not contain the token or other data

输出如下

请告诉我如何解决此问题 谢谢

please tell me how to resolve this problem Thanks

推荐答案

尝试使用此代码.基于Facebook SDK版本4.0

Try This code. Based on Facebook SDK version 4.0

AppDalegate.m

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    return [[FBSDKApplicationDelegate sharedInstance] application:application
                                                          openURL:url
                                                sourceApplication:sourceApplication
                                                       annotation:annotation];
}

ViewController.m

- (IBAction)btnFacebookPressed:(id)sender {
    FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
    [login logInWithReadPermissions:@[@"email"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error)
     {
         if (error)
         {
             // Process error
         }
         else if (result.isCancelled)
         {
             // Handle cancellations
         }
         else
         {
             if ([result.grantedPermissions containsObject:@"email"])
             {
                 NSLog(@"result is:%@",result);
                 [self fetchUserInfo];
                 [login logOut];
             }
         }
     }];
}

-(void)fetchUserInfo
{
    if ([FBSDKAccessToken currentAccessToken])
    {
        NSLog(@"Token is available : %@",[[FBSDKAccessToken currentAccessToken]tokenString]);

        [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"id, name, link, first_name, last_name, picture.type(large), email, birthday, bio ,location ,friends ,hometown , friendlists"}]
         startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
             if (!error)
             {
                 NSLog(@"resultis:%@",result);
             }
             else
             {
                 NSLog(@"Error %@",error);
             }
         }];

    }

}

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