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iosfacebookauthenticationfbsdk

Facebook login in iOS is not opening safari when attempting to login for the first time

My app Login Screen,

enter image description here

On first attempt facebook login button doesn't open safari browser whereas on second attempt it works fine.

Below is my tried code:

FBSDKLoginManager *manager = [FBSDKLoginManager new];
manager.loginBehavior = FBSDKLoginBehaviorBrowser;
NSArray *permissions = @[@"email",@"public_profile"];
[manager logInWithReadPermissions:permissions fromViewController:self handler:^(FBSDKLoginManagerLoginResult *result, NSError *error){

    if(error) {
        [self showAlertWith:@"Oops!" message:@"Login Failed, try again" handler:nil];
        return;
    }
    if(result.isCancelled) {
        [self showAlertWith:@"Oops!" message:@"Login Failed, try again" handler:nil];
        return;
    }else {
        [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me"
                                           parameters:@{@"fields": @"picture, name, email"}]
         startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id userinfo, NSError *error) {
             if(!error) {
                 if([FBSDKAccessToken currentAccessToken]) {
                     [self makeGraphRequest];
                 }
             }else {
                 EKLog(@"error %@", error);
             }
         }];
    }
}];

Clicking login button for the first time the loginWithReadPermission is called but callback block is never called, whereas clicking again, the callback handler is called. Any help would be appreciated thanks.

Solution

  • You can try one solution if it work!

    declare FBSDKLoginManager *manager as instance variable or property and initialize it in viewDidload like,

     FBSDKLoginManager *manager = [FBSDKLoginManager new];

    And then use!! It might be happened because of local declaration!