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我想創建一個功能與iOS的Facebook的Facebook的，我將能夠登錄，如果我登錄，我將能夠看到nslog字符串「登錄」。但是我根本沒有看到它的字符串。此外，登錄似乎在推按鈕和看到我的Facebook應用程序方面工作正常，並按OK繼續。有人能告訴我我做錯了什麼嗎？Facebook Ios sdk登錄
-(IBAction)popButton:(id)sender {
TUAppDelegate *appDelegate = (TUAppDelegate *)[[UIApplication sharedApplication] delegate];
// this button's job is to flip-flop the session from open to closed
if (appDelegate.session.isOpen) {
// if a user logs out explicitly, we delete any cached token information, and next
// time they run the applicaiton they will be presented with log in UX again; most
// users will simply close the app or switch away, without logging out; this will
// cause the implicit cached-token login to occur on next launch of the application
[appDelegate.session closeAndClearTokenInformation];
} else {
if (appDelegate.session.state != FBSessionStateCreated) {
// Create a new, logged out session.
appDelegate.session = [[FBSession alloc] init];
}
// if the session isn't open, let's open it now and present the login UX to the user
[appDelegate.session openWithCompletionHandler:^(FBSession *session,
FBSessionState status,
NSError *error) {
// and here we make sure to update our UX according to the new session state
[self updateView];
}];
}
}
- (void)updateView{
// get the app delegate, so that we can reference the session property
TUAppDelegate *appDelegate = (TUAppDelegate *)[[UIApplication sharedApplication] delegate];
if (appDelegate.session.isOpen) {
NSLog(@"Logged In");
} else {
NSLog(@"Not Logged In");
}
}