ios - How to restart an app when resumes from multi-tasking -

so app relies on internet connection , every time app opened home screen checks using reachability , allows user continue or tells them connected. issue when app resumed multitasking, skips initial view controller , goes straight were. there way in swift app refresh or restart when resumed multi-tasking?

thanks

edit when using code:

let storyboard = uistoryboard(name: "mainstoryboard", bundle: nil) self.window.rootviewcontroller = mainstoryboard.instantiateinitialviewcontroller() 

i expected declaration error.

you can set root view controller , restart main vc. assuming using storyboard:

(self referring appdelegate)

swift:

let storyboard = uistoryboard(name: "mystoryboardname", bundle: nil) self.window.rootviewcontroller = storyboard.instantiateinitialviewcontroller() 

objective-c:

self.window.rootviewcontroller = [[uistoryboard storyboardwithname:@"mystoryboardname" bundle:nil] instantiateinitialviewcontroller];