ios - FBSDKLog 缺少权限

Question

我想与 facebook 分享新闻。这是代码:

RACSignal *sign = [RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
        if([[FBSDKAccessToken currentAccessToken] hasGranted:@"publish_actions"]){
            NSLog(@"1 blck");
            NSLog(@"curr tok? %@", [FBSDKAccessToken currentAccessToken]);
            [subscriber sendNext:@YES];
            [subscriber sendCompleted];
        } else {
            NSLog(@"2 blck");
            FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
            [login logOut];
            login.loginBehavior = FBSDKLoginBehaviorWeb;
            [login logInWithPublishPermissions:@[@"publish_actions"] fromViewController:APP.window.rootViewController handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
                NSLog(@"log passed by");
                self.isExecuting = YES;
                if (error) {
                    NSError *err = [NSError errorWithDomain:@"ru.myServer.fb" code:-3 userInfo:@{NSLocalizedDescriptionKey:error.localizedDescription}];
                    [subscriber sendError:err];
                } else if (result.isCancelled) {
                    NSError *err = [NSError errorWithDomain:@"ru.myServer.fb" code:-4 userInfo:@{NSLocalizedDescriptionKey:@"Недоступно"}];
                    [subscriber sendError:err];
                } else {
                    NSString *strToken = result.token.tokenString;
                    NSString *strUserId = result.token.userID;
                    NSDictionary *dctProps = @{@"token":strToken, @"user_id":strUserId};
                    [subscriber sendNext:dctProps];
                    [subscriber sendCompleted];
                }
            }];
        }

它非常简单，即使您不熟悉 Reactive Cocoa。

出于某种原因，该代码对一个帐户有效(发布新闻)，该帐户之前已获得授权，但是当我尝试为另一个帐户共享新闻时，它完成阻止但发送错误

FBSDKLog: Warning: Access token is missing publish_actions permissions

.显然，没有任何消息共享。

为什么会这样？

Answer 1

要允许使用 FBSDK 在您的应用程序内部发布，您必须在登录时向用户询问额外的权限:publish_actions

示例:

 [loginManager logInWithPublishPermissions:@[@"publish_actions"]
                         fromViewController:self
                                    handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
    //TODO: process error or result.
  }];

引用资料:
https://developers.facebook.com/docs/facebook-login/ios