[英]FBSession, checking if logged in?
I have implemented the facebook login into my app however right now I've been playing around with the login/logout states and what a modal view to pop only if the user is logged out...anyways this is what I have and its not working? 我已经在我的应用程序中实现了Facebook登录,但是现在我一直在尝试登录/退出状态以及仅当用户注销时才会弹出的模式视图...无论如何,这就是我所拥有的,而没有工作吗
if (FBSessionStateClosed) {
[self performSegueWithIdentifier:@"TestModal" sender:nil];
}
Thanks for any help! 谢谢你的帮助!
If I get u correctly, your session should be still Open. 如果我正确理解了您,则您的会话应该仍处于打开状态。 Double check did you perform this line when user logout?
仔细检查用户注销时是否执行了此行?
[FBSession.activeSession closeAndClearTokenInformation];
Hope this help 希望这个帮助
Use Following method may be help you : 使用以下方法可能会帮助您:
-(void)openFacebookAuthentication
{
NSArray *permission = [NSArray arrayWithObjects:kFBEmailPermission,kFBUserPhotosPermission, nil];
FBSession *session = [[FBSession alloc] initWithPermissions:permission];
[FBSession setActiveSession: [[FBSession alloc] initWithPermissions:permission] ];
[[FBSession activeSession] openWithBehavior:FBSessionLoginBehaviorForcingWebView completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
switch (status) {
case FBSessionStateOpen:
[self getMyData];
break;
case FBSessionStateClosedLoginFailed: {
// prefer to keep decls near to their use
// unpack the error code and reason in order to compute cancel bool
NSString *errorCode = [[error userInfo] objectForKey:FBErrorLoginFailedOriginalErrorCode];
NSString *errorReason = [[error userInfo] objectForKey:FBErrorLoginFailedReason];
BOOL userDidCancel = !errorCode && (!errorReason || [errorReason isEqualToString:FBErrorLoginFailedReasonInlineCancelledValue]);
if(error.code == 2 && ![errorReason isEqualToString:kFBSdkUserLoginFail]) {
UIAlertView *errorMessage = [[UIAlertView alloc] initWithTitle:kFBAlertTitle
message:kFBAuthenticationErrorMessage
delegate:nil
cancelButtonTitle:kOk
otherButtonTitles:nil];
[errorMessage performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:YES];
errorMessage = nil;
}
}
break;
// presently extension, log-out and invalidation are being implemented in the Facebook class
default:
break; // so we do nothing in response to those state transitions
}
}];
permission = nil;
}
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