xcode 6：TwitterKit 在身份验证后不保持会话打开

Question

我正在我的 LoginViewController 中调用一个会话，如下所示。问题是，在它验证并关闭弹出视图之后...会话 returns nil。所以它最初到达 api 并启动一个会话（第一个日志记录 nil 因为会话是打开的，第二个日志记录 "Signed in as..." 和用户名）然后当它关闭登录视图时它记录又是零。不完全使用我可能做错的东西......

难道是因为我正在使用 TWTRSession* 会话来检查会话？那会不会让我注销？还是跟我关闭popupview有关？

我对我的 Facebook 登录做了基本相同的事情，但 Facebook 会话一直保持打开状态，直到我注销...

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.email.delegate = self;
    self.pass.delegate = self;
    //self.view.frame = CGRectMake(self.bounds.size.width, self.bounds.size.height);
    [Fabric with:@[[Twitter sharedInstance]]];

    TWTRSession* session;
    if (session) {
        NSLog(@"Early bird %@", [session userName]);
        [self closePopup];
    }
    else {
        NSLog(@"No dice");
    }
    /*
    TWTRLogInButton *logInButton = [TWTRLogInButton buttonWithLogInCompletion:^(TWTRSession *session, NSError *error) {
        // play with Twitter session
    }];
    logInButton.center = self.view.center;
    [self.view addSubview:logInButton];
*/
    TWTRLogInButton* logInButton =  [TWTRLogInButton
                                     buttonWithLogInCompletion:
                                     ^(TWTRSession* session, NSError* error) {
                                         if (session) {
                                             NSLog(@"signed in as %@", [session userName]);
                                             [self closePopup];
                                         } else {
                                             NSLog(@"error: %@", [error localizedDescription]);
                                         }
                                     }];

我决定也包括我的操作表，这样您就可以看到我是如何处理 login/logout 情况的：

- (void)sheet: (id) sender {
    NSString *email = [[NSUserDefaults standardUserDefaults] objectForKey:@"email"];
    UIActionSheet *sheet;
    TWTRSession *session;
    //if ([FBSDKAccessToken currentAccessToken]) {
    if (email == nil && [FBSDKAccessToken currentAccessToken] == nil && session == nil) {
        sheet = [[UIActionSheet alloc] initWithTitle:@"Profile"
                                                           delegate:nil // Can be another value but will be overridden when showing with handler.
                                                  cancelButtonTitle:@"Cancel"
                                             destructiveButtonTitle:@"Login"
                                                  otherButtonTitles:nil];
    }
    else
    {
        sheet = [[UIActionSheet alloc] initWithTitle:@"Profile"
                                                       delegate:nil // Can be another value but will be overridden when showing with handler.
                                              cancelButtonTitle:@"Cancel"
                                         destructiveButtonTitle:@"Logout"
                                              otherButtonTitles:@"User page", nil];
    }
        [sheet showInView:self.view
              handler:^(UIActionSheet *actionSheet, NSInteger buttonIndex) {

                  if (buttonIndex == [actionSheet cancelButtonIndex]) {
                      NSLog(@"Cancel button index tapped");
                  } else if (buttonIndex == [actionSheet destructiveButtonIndex]) {
                      if (email == nil && [FBSDKAccessToken currentAccessToken] == nil && session == nil) {
                          LoginViewController *loginView = [[LoginViewController alloc] initWithNibName:@"LoginView" bundle:[NSBundle mainBundle]];
                          //[self.view modalViewController:loginView animated:YES];
                          //[self presentModalViewController:loginView animated:YES];
                          //[self.navigationController pushViewController:loginView animated:YES];
                          loginView.delegate = (id) self;
                          [self presentPopupViewController:loginView animationType:MJPopupViewAnimationSlideTopBottom];
                          NSLog(@"Login View");
                      }
                      else
                      {
                          [[NSUserDefaults standardUserDefaults] setObject:nil forKey:@"email"];
                          FBSDKLoginManager *logout = [[FBSDKLoginManager alloc] init];
                          [logout logOut];
                      }
                  } else  {

                      NSLog(@"Button %i tapped", buttonIndex);
                      if (buttonIndex == 1) {
                          UserViewController * userView = [[UserViewController alloc] initWithNibName:@"UserView" bundle:[NSBundle mainBundle]];
                          [userView setUEmail:email];
                          [self presentViewController:userView animated:YES completion:nil];
                      }
                  }                      
              }];

}

Answer 1

所以我最终创建了自己的自定义 IBAction 来处理 Twitter 登录。这样效果更好。基本上你只需要小心检查会话是否处于活动状态：

-(IBAction)twlogin:(id)sender
{
    [Fabric with:@[[Twitter sharedInstance]]];
    [[Twitter sharedInstance] logInWithCompletion:^
     (TWTRSession *session, NSError *error) {

         if (session) {
             NSLog(@"signed in as %@", [session userName]);
             TWTRShareEmailViewController* shareEmailViewController =
             [[TWTRShareEmailViewController alloc]
              initWithCompletion:^(NSString* email2, NSError* error) {
                  NSLog(@"Email %@, Error: %@", email2, error);
              }];
             [self presentViewController:shareEmailViewController
                                animated:YES
                              completion:nil];
             [self closePopup];
             NSLog(@"session check %@", [session userName]);
         } else {
             NSLog(@"error: %@", [error localizedDescription]);
         }
     }];
    [[Twitter sharedInstance] logOut];
}

如您所见，TWTR *session 必须包含在 Twitter 共享实例中，如下所示：

[[Twitter sharedInstance] logInWithCompletion:^
         (TWTRSession *session, NSError *error) {

我以前没有这样做，这就是它不起作用的原因。希望这对某人有帮助。（现在，如果有人能帮助我使 Twitter 电子邮件正常工作……将不胜感激……）

xcode 6：TwitterKit 在身份验证后不保持会话打开

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