ios - Facebook SDK FBSession 代码不适用于 Swift

Question

尝试在 Swift 中实现这个 Objective C 代码:

    // Whenever a person opens the app, check for a cached session
    if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {

    // If there's one, just open the session silently, without showing the user the login UI
      [FBSession openActiveSessionWithReadPermissions:@[@"public_profile"]
                                 allowLoginUI:NO
                            completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
                              // Handler for session state changes
                              // This method will be called EACH time the session state changes,
                              // also for intermediate states and NOT just when the session open
                              [self sessionStateChanged:session state:state error:error];
                            }];

但是在这一行中 FBSession.activeSession.state.value 出现错误:

if FBSession.activeSession.state.value == FBSessionStateCreatedTokenLoaded.value {
        FBSession.openActiveSessionWithReadPermissions(self.facebookReadPermissions, allowLoginUI: true, completionHandler: {(session, state, error) -> Void in
                self.sessionStateChanged(session, state: state, error: error)
            })
    }

请帮忙。

Answer 1

用这个改变你的第一个 if 语句

    if(FBSession.activeSession().state == FBSessionState.CreatedTokenLoaded)
    {

    }