Question

我正在处理与图书相关的应用。我正在使用我/书籍获取用户喜欢的书籍，并且不需要任何额外的权限和工作正常。

现在我希望用户已完成且想要阅读图书

me / books - 无需额外许可

me / books.reads 和 me / books.wants_to_read 是必需的 user_actions.books 权限。

< / LI>

当我尝试使用“user_actions.books”权限登录时。我收到了以下错误。

错误： Error Domain = com.facebook.sdk Code = 2“无法完成操作。（com.facebook.sdk error 2.）”UserInfo = 0x10d055b80 {com.facebook.sdk：ErrorLoginFailedReason = com.facebook.sdk：SystemLoginCancelled ，com.facebook.sdk：ErrorInnerErrorKey = Error Domain = com.apple.accounts Code = 7“无法完成操作。（com.apple.accounts error 7.）”，com.facebook.sdk：ErrorSessionKey =， expirationDate：（null），refreshDate：（null），attemptsRefreshDate：0001-12-30 00:00:00 +0000，permissions：（null）＆gt;}

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];
         }
     }];
}

}

Answer 1

我通过下面的stackoverflow回答解决了这个问题：

https://stackoverflow.com/a/14696106/1237937

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");
                                         }
                                     }];
}

导入用户阅读并想要使用facebook sdk阅读书籍

1 个答案: