This worked for me:
- Go to the settings app of your iPhone.
- Open your Facebook Settings
- Scroll down to your app and make sure your app allows facebook
interaction.
This could happen on any device, therefore in your app you will have to make sure to handle this error correctly.
I reckon you give the user feedback why Login With Facebook failed and ask the user to check their Facebook settings on their device.
- (void)facebookSessionStateChanged:(FBSession *)session state:(FBSessionState)state error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen:
// handle successful login here
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
if (error) {
// handle error here, for example by showing an alert to the user
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Could not login with Facebook"
message:@"Facebook login failed. Please check your Facebook settings on your phone."
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
break;
default:
break;
}