iOS10 SFSafariViewController not working when alpha is set to 0

Question

I\'m using SFSafariViewController to grab user\'s cookie in my app. Here\'s is my code:

SFSafariViewController *safari = [[SFSafariViewController alloc]initW         


        

Answer 1

New info: Don't do this. The revised App Store guidelines prohibit this practice.

https://developer.apple.com/app-store/review/guidelines/

I'll leave this below for posterity: I call the following code from my app delegate's didFinishLaunchingWithOptions.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [self checkCookie];
}

- (void)checkCookie
{
    NSURL *url = [NSURL URLWithString:@"http://domainToCheck.com"];
    SFSafariViewController *vc = [[SFSafariViewController alloc] initWithURL:url];
    vc.delegate = self;

    UIViewController *windowRootController = [[UIViewController alloc] init];

    self.secondWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.secondWindow.rootViewController = windowRootController;
    [self.secondWindow makeKeyAndVisible];
    [self.secondWindow setAlpha:0.1];

    [windowRootController presentViewController:vc animated:NO completion:nil];
    self.window.windowLevel = 10;
}

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url options:(nonnull NSDictionary *)options
{
    [self.secondWindow.rootViewController dismissViewControllerAnimated:NO completion:nil];
    self.secondWindow = nil;
    self.window.windowLevel = 0;

    return YES;
}