I have an app with facebook integrations und sometimes everything works fine, but now I got some mails that some people cannot login with Facebook.
Now I now what is the problem.
If I am not logged in through the setting in my facebook account everything works fine, but when I logged in through setting I always get in the sessionStateChanged funciton the case FBSessionStateClosedLoginFailed:
What can I do against it?
Here is my code:
First when I click on login with Facebook I use this function:
- (void)facebookLoginFunction {
if ([self checkInternet]==TRUE) {
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(sessionStateChanged:) name:FBSessionStateChangedNotification object:nil];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
// The person using the app has initiated a login, so call the openSession method
// and show the login UX if necessary.
[appDelegate openSessionWithAllowLoginUI:YES];
}
}
and the function sessionStateChanged: in the Delegate
- (void)sessionStateChanged:(FBSession *)session state:(FBSessionState) state error:(NSError *)error{
switch (state) {
case FBSessionStateOpen:
if (!error) {
// We have a valid session
NSLog(#"User session found");
}
break;
case FBSessionStateClosed: NSLog(#"User session closed");
case FBSessionStateClosedLoginFailed:{ NSLog(#"Login failed");
[FBSession.activeSession closeAndClearTokenInformation];}
break;
default:
break;
}
[[NSNotificationCenter defaultCenter] postNotificationName:FBSessionStateChangedNotification object:session];
if (error) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
}
}
I realy hope that you can help me, cause I dont understand this crazy problem.
thanks
Adding both
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
return [FBSession.activeSession handleOpenURL:url];
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
[FBSession.activeSession handleDidBecomeActive];
}
Worked!
All credits go to Skrew for this answer.
Related
appdelegate.m
if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {
// Yes, so just open the session (this won't display any UX).
NSLog(#"token loaded");
[self openSession];
} else {
// No, display the login page.
//[self showLoginView];
NSLog(#"token not loaded");
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
// We need to properly handle activation of the application with regards to Facebook Login
// (e.g., returning from iOS 6.0 Login Dialog or from fast app switching).
[FBSession.activeSession handleDidBecomeActive];
}
pragma mark -
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen: {
NSLog(#"session state open");
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
NSLog(#"session state closed");
break;
default:
break;
}
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}
- (void)openSession
{
[FBSession openActiveSessionWithReadPermissions:#[#"public_profile, email, user_friends"] allowLoginUI:YES completionHandler:^(FBSession *session,
FBSessionState state, NSError *error) {
NSLog(#"It is never called");
[self sessionStateChanged:session state:state error:error];
}];
}
- (void)obatinUserInfo {
}
pragma mark -
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation
{
NSLog(#"it is never called");
return [FBSession.activeSession handleOpenURL:url];
}
view controller.m
===========
button action
- (IBAction)performLogin:(id)sender {
AppDelegate* appDelegate = [UIApplication sharedApplication].delegate;
[appDelegate openSession];
}
This is my code when call Facebook login goes to opensession, but not called within completion handler and open url.
Many links i refered but not working.
The same code working indivitual project but integrated into my project means not working.
Please assist me
Thanks in advance
S.Arul
i have implemented the Facebook login and it's work correctly. But i have a trouble with this screen:
this is provided directly by Facebook framework, so i can't directly attach an action on it.
that view is use to associate my Facebook app to my Facebook account. So the question is:
how can i detect if the user press cancel button?
i have tried to print the state of my Facebook session
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
NSLog(#"stato %u",state);
switch (state) {
case FBSessionStateOpen:
break;
case FBSessionStateClosed:
break;
case FBSessionStateCreated:
break;
case FBSessionStateCreatedOpening:
break;
case FBSessionStateOpenTokenExtended:
break;
case FBSessionStateCreatedTokenLoaded:
break;
case FBSessionStateClosedLoginFailed:
// Once the user has logged in, we want them to
// be looking at the root view.
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}
but it return always the same state, independently by the button pressed.
Thanks
I have solved by adding this line of code to the AppDelegate:
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
return [FBSession.activeSession handleOpenURL:url]; ;
}
and by checking the state of the connection with:
if (!FBSession.activeSession.isOpen) {
}
What state is always returned? This suggests there is something else not setup correctly?
You should be able to add something like this to your viewWillAppear/viewDidAppear.
// See if the app has a valid token for the current state.
if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {
// To-do, show logged in view
} else {
// No, display the login page.
[self showLoginView];
}
I have problem with facebook Login..I integrated Facebook into my app.First time when user wants to login it is showing login page,but from next time it is going to page "You have already authorised APP_NAME".
I checked for Scrumptious tutorial which is the sample which I got from Facebook SDK.and it is also working like same.
I want to login from different user,I dont want that page "You have already authorised APP_NAME" every time.
How to solve this.
Try this code in your app delegate class.
It checks whether the session is open or not and clears your login credentials from the device cache when you close the connection.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
LoginVC *loginScreen=[[LoginVC alloc]initWithNibName:#"LoginVC" bundle:nil];
navigationController=[[UINavigationController alloc]initWithRootViewController:loginScreen];
self.navigationController.navigationBar.tintColor = [UIColor blackColor];
self.window.rootViewController=self.navigationController;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
// See if we have a valid token for the current state.
if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {
[self openSession];
// To-do, show logged in view
} else {
// No, display the login page.
[self showLoginView];
}
return YES;
}
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen: {
UIViewController *topViewController =
[self.navigationController topViewController];
if ([[topViewController presentedViewController]
isKindOfClass:[LoginVC class]]) {
[topViewController dismissViewControllerAnimated:YES completion:nil];
}
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
// Once the user has logged in, we want them to
// be looking at the root view.
[self.navigationController popToRootViewControllerAnimated:NO];
[FBSession.activeSession closeAndClearTokenInformation];
[self showLoginView];
break;
default:
break;
}
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}
- (void)openSession
{
[FBSession openActiveSessionWithReadPermissions:nil
allowLoginUI:YES
completionHandler:
^(FBSession *session,
FBSessionState state, NSError *error) {
[self sessionStateChanged:session state:state error:error];
}];
}
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation
{
return [FBSession.activeSession handleOpenURL:url];
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
// We need to properly handle activation of the application with regards to Facebook Login
// (e.g., returning from iOS 6.0 Login Dialog or from fast app switching).
[FBSession.activeSession handleDidBecomeActive];
}
I hope this code will be helpful.
I am logging in into facebook in this way:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[FBSession openActiveSessionWithReadPermissions:nil
allowLoginUI:YES
completionHandler:
^(FBSession *session,
FBSessionState state, NSError *error) {
[self sessionStateChanged:session state:state error:error];
}];
return YES;
}
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen:
if (!error) {
// We have a valid session
//NSLog(#"User session found");
// Initiate a Facebook instance
self.facebook = [[Facebook alloc]
initWithAppId:FBSession.activeSession.appID
andDelegate:nil];
// Store the Facebook session information
self.facebook.accessToken = FBSession.activeSession.accessToken;
self.facebook.expirationDate = FBSession.activeSession.expirationDate;
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
// Clear out the Facebook instance
self.facebook = nil;
break;
default:
break;
}
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
// attempt to extract a token from the url
self.openedURL = url;
// attempt to extract a token from the url
return [FBSession.activeSession handleOpenURL:url];
}
...and I get the error: Error: HTTP status code: 400
I have set up the URL scheme in the plist. Why am I getting this?
Check in the App Dashboard. Look at your Basic Settings. Your Sandbox Mode may be set to Enabled. The errors should go away when your app is out of Sandbox mode.
I'm using the FB iOS SDK to get the user's credentials and access token and save them. With the previous version I managed to properly do this, but my solution broke with the upgrade to iOS 6, so I downloaded the new version from Github, and compiled and added the framework to my project according to the instructions.
I properly authenticate my user with FB, but when the browser (the modal view controller presented for auth) is dismissed my user reverts to the initial view of my app instead of the view that the process was launched from.
Right now I have code in my app delegate and my SocialNetworksViewController to do this.
In AppDelegate:
-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return [FBSession.activeSession handleOpenURL:url];
}
- (void)sessionStateChanged:(FBSession *)session
presentingViewController:(UIViewController *)presentingViewController
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen: {
[presentingViewController dismissModalViewControllerAnimated:YES];
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
// Once the user has logged in, we want them to
// be looking at the root view.
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
[[NSNotificationCenter defaultCenter] postNotificationName:FBSessionStateChangedNotification
object:session];
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}
- (void)openSessionFromViewController:(UIViewController *)viewController
{
NSArray *permissions = [NSArray arrayWithObjects:#"publish_stream", #"email", #"user_birthday", nil];
[FBSession openActiveSessionWithPermissions:permissions
allowLoginUI:YES
completionHandler:
^(FBSession *session,
FBSessionState state, NSError *error) {
[self sessionStateChanged:session presentingViewController:viewController state:state error:error];
}];
}
In SocialNetworksViewController:
- (IBAction)connectToFacebook:(UIButton *)sender {
if (!self.facebookConnected) {
AppDelegate <UIApplicationDelegate> *appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
[appDelegate openSessionFromViewController:self];
}
}
- (void)sessionStateChanged:(NSNotification*)notification {
NSLog(#"%#", FBSession.activeSession.accessToken);
}
- (void)facebookLoginFailed {
}
This is in viewDidLoad as well:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(sessionStateChanged:)
name:FBSessionStateChangedNotification
object:nil];
In the sessionStateChanged method, the NSLog outputs and then I get send to my initial view.