无限的会话与facebook ios sdk FBLoginView

Question

我正在做第一次FB与iOS SDK集成的尝试。

我已经成功地通过FBLoginView与我的fb应用程序建立了连接，该工作到目前为止已经工作。

这里是我相应的调用：

-(void)loginViewShowingLoggedInUser:(FBLoginView *)loginView{ 
    NSLog(@"logged in"); 
} 
-(void)loginViewShowingLoggedOutUser:(FBLoginView *)loginView{ 
    NSLog(@"logged out"); 
    [FBSettings setLoggingBehavior:[NSSet setWithObjects:FBLoggingBehaviorFBRequests, nil]]; 
    if (FBSession.activeSession.isOpen) { 
     [FBRequestConnection startForMeWithCompletionHandler:^(FBRequestConnection *connection,id<FBGraphUser> user,NSError *error) { 
     if (!error) { 
      NSString *fbID = user.id; 
      NSLog(@"UserID: %@",fbID); 
      NSLog(@"TESTING: %@",user.name); 
     } 
     }]; 
    } 
} 
- (void)loginViewFetchedUserInfo:(FBLoginView *)loginView 
          user:(id<FBGraphUser>)user { 
    NSLog(@"Hello %@!", user.first_name); 
} 
- (void)loginView:(FBLoginView *)loginView handleError:(NSError *)error { 
    NSLog(@"FBLoginView encountered an error=%@", error); 
} 

我有1小1大（主题）的问题。

小：请求被好吧fullfilled和我得到一个不错的日志吧：

Response Body: 
(
     { 
     body =   { 
      gender = male; 
      id = ###; 
      ... 
     }; 
     code = 200; 
    } 
) 

但不知何故，我的2个testlogs不秀，任何想法？

大（主题）：我在我的应用程序的指定控制器中建立连接。我的问题是，在应用程序的每次重新启动时，连接以某种方式丢失（会话不再活动）..有没有办法使用FBLoginView建立无限连接？

我已经添加下面的调用&方法来我的appdelegate：

//upon start: 
if (![FBSession activeSession].isOpen) { 
    [self connectWithFacebook]; 
} 


- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI 
{ 
    //.. 
    return [FBSession openActiveSessionWithReadPermissions:permissions 
              allowLoginUI:allowLoginUI 
             completionHandler:^(FBSession *session, FBSessionState state, NSError *error) { 
              if (error) { 
               NSLog (@"Handle error %@", error.localizedDescription); 
              } else { 
               [FBSession setActiveSession:session]; 
               [self checkSessionState:state]; 
              } 
             }]; 
} 
- (void) connectWithFacebook { 

    [self openSessionWithAllowLoginUI:YES]; 
} 

- (void) checkSessionState:(FBSessionState)state { 
    switch (state) { 
     case FBSessionStateOpen: 
     break; 
     case FBSessionStateCreated: 
     break; 
     case FBSessionStateCreatedOpening: 
     break; 
     case FBSessionStateCreatedTokenLoaded: 
     break; 
     case FBSessionStateOpenTokenExtended: 
     // I think this is the state that is calling 
     break; 
     case FBSessionStateClosed: 
     break; 
     case FBSessionStateClosedLoginFailed: 
     break; 
     default: 
     break; 
    } 
} 

这允许重新登录，但每一个应用程序被打开登陆界面时再次表明这是不是很用户友好。有没有解决这个问题的办法，如果是的话，我错过了什么或者我可以继续向哪个方向发展？

Answer 1

这是我的实现，保持会话开放60天（最大允许时间FB SDK 3.2.1）

- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI 
{ 
    NSArray *readPermissions = @[@"email",@"friends_birthday",@"friends_likes",@"friends_interests",@"user_birthday",@"user_interests",@"user_likes",@"user_location"]; 

    return [FBSession openActiveSessionWithReadPermissions:readPermissions 
               allowLoginUI:allowLoginUI 
              completionHandler:^(FBSession *session, 
                   FBSessionState state, 
                   NSError *error) { 
               [self sessionStateChanged:session 
                    state:state 
                    error:error]; 
              }]; 
} 

- (void)sessionStateChanged:(FBSession *)session 
         state:(FBSessionState)state 
         error:(NSError *)error 
{ 
    switch (state) { 
     case FBSessionStateOpen: { 
      // We have a valid session 
      NSLog(@"User session found"); 
      if (FBSession.activeSession.isOpen) { 
       [FBRequestConnection 
       startForMeWithCompletionHandler:^(FBRequestConnection *connection, 
                id<FBGraphUser> user, 
                NSError *error) { 
         if (!error) { 
          NSLog(@"accessToken: %@ userID: %@",[FBSession activeSession].accessTokenData.accessToken,user.id); 
          self.userID = user.id; 
          [[NSUserDefaults standardUserDefaults] setValue:user.first_name forKey:@"first_name"]; 
          [[NSUserDefaults standardUserDefaults] setValue:user.last_name forKey:@"last_name"]; 
          NSString *accessToken = [FBSession activeSession].accessTokenData.accessToken; 
          if (accessToken) { 
           [[NSNotificationCenter defaultCenter] postNotificationName:FacebookLoginInProgressNotification object:nil]; 
           [self submitFacebookUserID:user.id andAccessToken:accessToken]; 
          } 
          else { 
           NSLog(@"no access token for userID: %@",user.id); 
           [[NSNotificationCenter defaultCenter] postNotificationName:FacebookLoginFailureNotification object:nil]; 
          } 
         } 
         else { 
          //handle error retrieving User ID 
          NSLog(@"error retrieving User ID [%@]",[error localizedDescription]); 
          [[NSNotificationCenter defaultCenter] postNotificationName:FacebookLoginFailureNotification object:nil]; 
         } 
       }]; 
      } else { 
       [FBSession setActiveSession:session]; 
      } 

      // Pre-fetch and cache the friends for the friend picker as soon as possible to improve 
      // responsiveness when the user tags their friends. 
      FBCacheDescriptor *cacheDescriptor = [FBFriendPickerViewController cacheDescriptor]; 
      [cacheDescriptor prefetchAndCacheForSession:session]; 
     } 
      break; 
     case FBSessionStateClosed: { 
      [FBSession.activeSession closeAndClearTokenInformation]; 
     } 
      break; 
     case FBSessionStateClosedLoginFailed: { 
      [FBSession.activeSession closeAndClearTokenInformation]; 
     } 
      break; 
     default: 
      break; 
    } 

    [[NSNotificationCenter defaultCenter] 
    postNotificationName:FBSessionStateChangedNotification 
    object:session]; 

    if (error) { 
     NSLog(@"Facebook Error %@", error); 
    } 
}