Ios 使用facebook sdk导入用户已读和想读的书籍

我正在开发与书籍相关的应用程序。我正在使用me/books获取用户喜欢的书籍，它不需要任何额外的权限，工作正常

现在我希望用户完成并且希望阅读书籍

me/books-无需额外许可

me/books.reads和me/books.want\u-to\u-read是必需的用户操作。books权限

当我尝试以“user\u actions.books”权限登录时。我有以下错误

错误： Error Domain=com.facebook.sdk Code=2“操作无法完成。（com.facebook.sdk错误2）。”UserInfo=0x10d055b80{com.facebook.sdk:ErrorLoginFailedReason=com.facebook.sdk:SystemLoginCancelled，com.facebook.sdk:ErrorInnerErrorKey=Error Domain=com.apple.accounts Code=7“操作无法完成。（com.apple.accounts error 7.）”，com.facebook.sdk:ErrorSessionKey=，过期日期：（null），刷新日期：（null），尝试刷新日期：0001-12-30 00:00:00+0000，权限：（null）>]

代码：

-(void)importBooksFromFacebook{

// If the session state is any of the two "open" states when the button is clicked
if (FBSession.activeSession.state == FBSessionStateOpen
    || FBSession.activeSession.state == FBSessionStateOpenTokenExtended) {

    // Close the session and remove the access token from the cache
    // The session state handler (in the app delegate) will be called automatically
    [FBSession.activeSession closeAndClearTokenInformation];

    // If the session state is not any of the two "open" states when the button is clicked
} else {
    // Open a session showing the user the login UI
    // You must ALWAYS ask for public_profile permissions when opening a session
    [FBSession openActiveSessionWithReadPermissions:@[@"user_actions.books"]
                                       allowLoginUI:YES
                                  completionHandler:
     ^(FBSession *session, FBSessionState state, NSError *error) {


         // If the session was opened successfully
         if (!error && state == FBSessionStateOpen){
             NSLog(@"Session opened");
             // Show the user the logged-in UI
             // successful login now import book using access token
             return;
         }
         if (state == FBSessionStateClosed || state == FBSessionStateClosedLoginFailed){
             // If the session is closed
             NSLog(@"Session closed");
             // Show the user the logged-out UI
             [self userLoggedOut];
         }

         // Handle errors
         if (error){
             NSLog(@"Error");
             NSString *alertText;
             NSString *alertTitle;
             // If the error requires people using an app to make an action outside of the app in order to recover
             if ([FBErrorUtility shouldNotifyUserForError:error] == YES){
                 alertTitle = @"Something went wrong";
                 alertText = [FBErrorUtility userMessageForError:error];
                 [self showMessage:alertText withTitle:alertTitle];
             } else {

                 // If the user cancelled login, do nothing
                 if ([FBErrorUtility errorCategoryForError:error] == FBErrorCategoryUserCancelled) {
                     NSLog(@"User cancelled login");

                     // Handle session closures that happen outside of the app
                 } else if ([FBErrorUtility errorCategoryForError:error] == FBErrorCategoryAuthenticationReopenSession){
                     alertTitle = @"Session Error";
                     alertText = @"Your current session is no longer valid. Please log in again.";
                     [self showMessage:alertText withTitle:alertTitle];

                     // Here we will handle all other errors with a generic error message.
                     // We recommend you check our Handling Errors guide for more information
                     // https://developers.facebook.com/docs/ios/errors/
                 } else {
                     //Get more error information from the error
                     NSDictionary *errorInformation = [[[error.userInfo objectForKey:@"com.facebook.sdk:ParsedJSONResponseKey"] objectForKey:@"body"] objectForKey:@"error"];

                     // Show the user an error message
                     alertTitle = @"Something went wrong";
                     alertText = [NSString stringWithFormat:@"Please retry. \n\n If the problem persists contact us and mention this error code: %@", [errorInformation objectForKey:@"message"]];
                     [self showMessage:alertText withTitle:alertTitle];
                 }
             }
             // Clear this token
             [FBSession.activeSession closeAndClearTokenInformation];
             // Show the user the logged-out UI
             //[self userLoggedOut];
         }
     }];
}

}

---

我通过以下回答解决了这个问题：

if ([[FBSession activeSession] isOpen]) {
  /* 
   * if the current session has no publish permission we need to reauthorize 
   */
  if ([[[FBSession activeSession] permissions]indexOfObject:@"publish_actions"] == NSNotFound) {

        [[FBSession activeSession] requestNewPublishPermissions:[NSArray arrayWithObject:@"publish_actions"] defaultAudience:FBSessionDefaultAudienceFriends
                                              completionHandler:^(FBSession *session,NSError *error){
                                                  [self postPhoto];
                                              }];

    }else{
        [self publishStory];
    }
}else{
    /* 
     * open a new session with publish permission 
     */
    [FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
                                       defaultAudience:FBSessionDefaultAudienceOnlyMe
                                          allowLoginUI:YES
                                     completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                                         if (!error && status == FBSessionStateOpen) {
                                             [self publishStory];
                                         }else{
                                             NSLog(@"error");
                                         }
                                     }];
}