Dismiss all Views from NavigationViewController










1















I have the following setup:




AuthVC || Navigator => TabBarContr => MainVC/SecondVC



 => SettingsVC



In my AuthVC I check if the user is logged in. If yes I just open my Navigator class which is a NavigationViewController and which has my "TabBarContr" as rootview. There I have two TabBarItems. In the Navigationbar of my TabBarContr I have a 'settings' button which opens my SettingsVC. In there I have a logout button. When pressed, I logout and want to kill everything except my authVC-Controller so that I can reopen my login-VC at that point.



What I am doing:
When logout is pressed I link back from my SettingsVC to my TabBarContr. There I call dismissViewController.



I thought this would work because I really get back to my AuthVC. But after logging in again it opens my TabBarContr and there I got some issues loading stuff because some objects are still living from my previous logged-in session.



So what do I need to do to really kill everything except AuthVC?










share|improve this question






















  • You are presenting all UIViewController's?

    – Sohil R. Memon
    Nov 13 '18 at 12:01











  • The flow you have used sounds good to me, but I suspect a memory leak here which is keeping the objects alive.

    – hardik parmar
    Nov 13 '18 at 12:02















1















I have the following setup:




AuthVC || Navigator => TabBarContr => MainVC/SecondVC



 => SettingsVC



In my AuthVC I check if the user is logged in. If yes I just open my Navigator class which is a NavigationViewController and which has my "TabBarContr" as rootview. There I have two TabBarItems. In the Navigationbar of my TabBarContr I have a 'settings' button which opens my SettingsVC. In there I have a logout button. When pressed, I logout and want to kill everything except my authVC-Controller so that I can reopen my login-VC at that point.



What I am doing:
When logout is pressed I link back from my SettingsVC to my TabBarContr. There I call dismissViewController.



I thought this would work because I really get back to my AuthVC. But after logging in again it opens my TabBarContr and there I got some issues loading stuff because some objects are still living from my previous logged-in session.



So what do I need to do to really kill everything except AuthVC?










share|improve this question






















  • You are presenting all UIViewController's?

    – Sohil R. Memon
    Nov 13 '18 at 12:01











  • The flow you have used sounds good to me, but I suspect a memory leak here which is keeping the objects alive.

    – hardik parmar
    Nov 13 '18 at 12:02













1












1








1








I have the following setup:




AuthVC || Navigator => TabBarContr => MainVC/SecondVC



 => SettingsVC



In my AuthVC I check if the user is logged in. If yes I just open my Navigator class which is a NavigationViewController and which has my "TabBarContr" as rootview. There I have two TabBarItems. In the Navigationbar of my TabBarContr I have a 'settings' button which opens my SettingsVC. In there I have a logout button. When pressed, I logout and want to kill everything except my authVC-Controller so that I can reopen my login-VC at that point.



What I am doing:
When logout is pressed I link back from my SettingsVC to my TabBarContr. There I call dismissViewController.



I thought this would work because I really get back to my AuthVC. But after logging in again it opens my TabBarContr and there I got some issues loading stuff because some objects are still living from my previous logged-in session.



So what do I need to do to really kill everything except AuthVC?










share|improve this question














I have the following setup:




AuthVC || Navigator => TabBarContr => MainVC/SecondVC



 => SettingsVC



In my AuthVC I check if the user is logged in. If yes I just open my Navigator class which is a NavigationViewController and which has my "TabBarContr" as rootview. There I have two TabBarItems. In the Navigationbar of my TabBarContr I have a 'settings' button which opens my SettingsVC. In there I have a logout button. When pressed, I logout and want to kill everything except my authVC-Controller so that I can reopen my login-VC at that point.



What I am doing:
When logout is pressed I link back from my SettingsVC to my TabBarContr. There I call dismissViewController.



I thought this would work because I really get back to my AuthVC. But after logging in again it opens my TabBarContr and there I got some issues loading stuff because some objects are still living from my previous logged-in session.



So what do I need to do to really kill everything except AuthVC?







ios objective-c xcode






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 13 '18 at 11:19









progNewbieprogNewbie

82841747




82841747












  • You are presenting all UIViewController's?

    – Sohil R. Memon
    Nov 13 '18 at 12:01











  • The flow you have used sounds good to me, but I suspect a memory leak here which is keeping the objects alive.

    – hardik parmar
    Nov 13 '18 at 12:02

















  • You are presenting all UIViewController's?

    – Sohil R. Memon
    Nov 13 '18 at 12:01











  • The flow you have used sounds good to me, but I suspect a memory leak here which is keeping the objects alive.

    – hardik parmar
    Nov 13 '18 at 12:02
















You are presenting all UIViewController's?

– Sohil R. Memon
Nov 13 '18 at 12:01





You are presenting all UIViewController's?

– Sohil R. Memon
Nov 13 '18 at 12:01













The flow you have used sounds good to me, but I suspect a memory leak here which is keeping the objects alive.

– hardik parmar
Nov 13 '18 at 12:02





The flow you have used sounds good to me, but I suspect a memory leak here which is keeping the objects alive.

– hardik parmar
Nov 13 '18 at 12:02












4 Answers
4






active

oldest

votes


















1














"... But after logging in again it opens my TabBarContr and there I got some issues loading ..."



If I understood you are removing every view, but your problem is your viewcontrollers are not properly restarted. You may have some retained reference so you are reusing the vc objects and then you have some issue presenting them for the second time. Try reviewing what references are not released when you dismiss/pop.






share|improve this answer























  • Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

    – progNewbie
    Nov 13 '18 at 12:36











  • The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

    – Pablo Alegre
    Nov 13 '18 at 12:56



















1














set AuthVC as your window's rootViewController.



let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate


instantiate AuthVC from storyboard and assign it to window's rootViewController



appDelegate.window?.rootViewController = AuthVC





share|improve this answer

























  • you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

    – progNewbie
    Nov 13 '18 at 11:28












  • window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

    – Viren Malhan
    Nov 13 '18 at 11:33











  • where in my AppDelegate do I set it as rootViewController?

    – progNewbie
    Nov 13 '18 at 11:36











  • i have updated my answer. set rootViewController to AVC on logout action.

    – Viren Malhan
    Nov 13 '18 at 11:57











  • My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

    – progNewbie
    Nov 13 '18 at 12:04


















0














Or you can set root view controller for the window by next code in your settingsVC:



//Did tap logout button
self.view.window?.rootViewController = AuthVC


If it doesn't help you, please send how exactly you show NavigationViewController after AuthVC.






share|improve this answer























  • I'd still need to call dismissViewController right?

    – progNewbie
    Nov 13 '18 at 12:08


















0














Try this



let maiStoryBoard = UIStoryboard(name: "Main", bundle: nil) //Storyboard in which AuthVC lies

let authVC = mainStoryBoard.instantiateViewControllerWithIdentifier("AuthVC") as! AuthVC
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
appDelegate.window?.rootViewController = authVC





share|improve this answer






















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    4 Answers
    4






    active

    oldest

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    4 Answers
    4






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1














    "... But after logging in again it opens my TabBarContr and there I got some issues loading ..."



    If I understood you are removing every view, but your problem is your viewcontrollers are not properly restarted. You may have some retained reference so you are reusing the vc objects and then you have some issue presenting them for the second time. Try reviewing what references are not released when you dismiss/pop.






    share|improve this answer























    • Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

      – progNewbie
      Nov 13 '18 at 12:36











    • The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

      – Pablo Alegre
      Nov 13 '18 at 12:56
















    1














    "... But after logging in again it opens my TabBarContr and there I got some issues loading ..."



    If I understood you are removing every view, but your problem is your viewcontrollers are not properly restarted. You may have some retained reference so you are reusing the vc objects and then you have some issue presenting them for the second time. Try reviewing what references are not released when you dismiss/pop.






    share|improve this answer























    • Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

      – progNewbie
      Nov 13 '18 at 12:36











    • The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

      – Pablo Alegre
      Nov 13 '18 at 12:56














    1












    1








    1







    "... But after logging in again it opens my TabBarContr and there I got some issues loading ..."



    If I understood you are removing every view, but your problem is your viewcontrollers are not properly restarted. You may have some retained reference so you are reusing the vc objects and then you have some issue presenting them for the second time. Try reviewing what references are not released when you dismiss/pop.






    share|improve this answer













    "... But after logging in again it opens my TabBarContr and there I got some issues loading ..."



    If I understood you are removing every view, but your problem is your viewcontrollers are not properly restarted. You may have some retained reference so you are reusing the vc objects and then you have some issue presenting them for the second time. Try reviewing what references are not released when you dismiss/pop.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Nov 13 '18 at 12:28









    Pablo AlegrePablo Alegre

    393




    393












    • Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

      – progNewbie
      Nov 13 '18 at 12:36











    • The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

      – Pablo Alegre
      Nov 13 '18 at 12:56


















    • Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

      – progNewbie
      Nov 13 '18 at 12:36











    • The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

      – Pablo Alegre
      Nov 13 '18 at 12:56

















    Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

    – progNewbie
    Nov 13 '18 at 12:36





    Yes correct. That is exactly my problem. Unfortunately I still don't understand why I got retained references and I thought that maybe I can force close the VC so it will not use old objects anymore.

    – progNewbie
    Nov 13 '18 at 12:36













    The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

    – Pablo Alegre
    Nov 13 '18 at 12:56






    The typical case is a retained view controller property in the top level, that should be manually set to nil when it is dismissed. If everything is set to nil (try watch object variables debugging) and the problem persists you can also have some cross reference, something like a delegate declared as retained. You can also try to detect wich viewcontroller is not released, overriding dealloc function: -(void)dealloc NSLog( @"class %@ -> deallocn", NSStringFromClass(self.class)); '

    – Pablo Alegre
    Nov 13 '18 at 12:56














    1














    set AuthVC as your window's rootViewController.



    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate


    instantiate AuthVC from storyboard and assign it to window's rootViewController



    appDelegate.window?.rootViewController = AuthVC





    share|improve this answer

























    • you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

      – progNewbie
      Nov 13 '18 at 11:28












    • window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

      – Viren Malhan
      Nov 13 '18 at 11:33











    • where in my AppDelegate do I set it as rootViewController?

      – progNewbie
      Nov 13 '18 at 11:36











    • i have updated my answer. set rootViewController to AVC on logout action.

      – Viren Malhan
      Nov 13 '18 at 11:57











    • My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

      – progNewbie
      Nov 13 '18 at 12:04















    1














    set AuthVC as your window's rootViewController.



    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate


    instantiate AuthVC from storyboard and assign it to window's rootViewController



    appDelegate.window?.rootViewController = AuthVC





    share|improve this answer

























    • you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

      – progNewbie
      Nov 13 '18 at 11:28












    • window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

      – Viren Malhan
      Nov 13 '18 at 11:33











    • where in my AppDelegate do I set it as rootViewController?

      – progNewbie
      Nov 13 '18 at 11:36











    • i have updated my answer. set rootViewController to AVC on logout action.

      – Viren Malhan
      Nov 13 '18 at 11:57











    • My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

      – progNewbie
      Nov 13 '18 at 12:04













    1












    1








    1







    set AuthVC as your window's rootViewController.



    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate


    instantiate AuthVC from storyboard and assign it to window's rootViewController



    appDelegate.window?.rootViewController = AuthVC





    share|improve this answer















    set AuthVC as your window's rootViewController.



    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate


    instantiate AuthVC from storyboard and assign it to window's rootViewController



    appDelegate.window?.rootViewController = AuthVC






    share|improve this answer














    share|improve this answer



    share|improve this answer








    edited Nov 13 '18 at 11:55

























    answered Nov 13 '18 at 11:24









    Viren MalhanViren Malhan

    755




    755












    • you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

      – progNewbie
      Nov 13 '18 at 11:28












    • window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

      – Viren Malhan
      Nov 13 '18 at 11:33











    • where in my AppDelegate do I set it as rootViewController?

      – progNewbie
      Nov 13 '18 at 11:36











    • i have updated my answer. set rootViewController to AVC on logout action.

      – Viren Malhan
      Nov 13 '18 at 11:57











    • My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

      – progNewbie
      Nov 13 '18 at 12:04

















    • you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

      – progNewbie
      Nov 13 '18 at 11:28












    • window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

      – Viren Malhan
      Nov 13 '18 at 11:33











    • where in my AppDelegate do I set it as rootViewController?

      – progNewbie
      Nov 13 '18 at 11:36











    • i have updated my answer. set rootViewController to AVC on logout action.

      – Viren Malhan
      Nov 13 '18 at 11:57











    • My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

      – progNewbie
      Nov 13 '18 at 12:04
















    you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

    – progNewbie
    Nov 13 '18 at 11:28






    you mean rootviewController of my NavigationController? Or do you mean initial ViewController?

    – progNewbie
    Nov 13 '18 at 11:28














    window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

    – Viren Malhan
    Nov 13 '18 at 11:33





    window's rootViewController. which is present in your app delegate. so your AuthVC will become first screen on window. then you can again continue with your normal navigation flow.

    – Viren Malhan
    Nov 13 '18 at 11:33













    where in my AppDelegate do I set it as rootViewController?

    – progNewbie
    Nov 13 '18 at 11:36





    where in my AppDelegate do I set it as rootViewController?

    – progNewbie
    Nov 13 '18 at 11:36













    i have updated my answer. set rootViewController to AVC on logout action.

    – Viren Malhan
    Nov 13 '18 at 11:57





    i have updated my answer. set rootViewController to AVC on logout action.

    – Viren Malhan
    Nov 13 '18 at 11:57













    My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

    – progNewbie
    Nov 13 '18 at 12:04





    My AppDelegate is in my Main.class. I set my AuthVC to rootviewcontroller there now. But this does not change anything. I need to do it when the logout button is pressed right? And do I even call dismissviewController anymore?

    – progNewbie
    Nov 13 '18 at 12:04











    0














    Or you can set root view controller for the window by next code in your settingsVC:



    //Did tap logout button
    self.view.window?.rootViewController = AuthVC


    If it doesn't help you, please send how exactly you show NavigationViewController after AuthVC.






    share|improve this answer























    • I'd still need to call dismissViewController right?

      – progNewbie
      Nov 13 '18 at 12:08















    0














    Or you can set root view controller for the window by next code in your settingsVC:



    //Did tap logout button
    self.view.window?.rootViewController = AuthVC


    If it doesn't help you, please send how exactly you show NavigationViewController after AuthVC.






    share|improve this answer























    • I'd still need to call dismissViewController right?

      – progNewbie
      Nov 13 '18 at 12:08













    0












    0








    0







    Or you can set root view controller for the window by next code in your settingsVC:



    //Did tap logout button
    self.view.window?.rootViewController = AuthVC


    If it doesn't help you, please send how exactly you show NavigationViewController after AuthVC.






    share|improve this answer













    Or you can set root view controller for the window by next code in your settingsVC:



    //Did tap logout button
    self.view.window?.rootViewController = AuthVC


    If it doesn't help you, please send how exactly you show NavigationViewController after AuthVC.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Nov 13 '18 at 11:51









    GkoluniaGkolunia

    828




    828












    • I'd still need to call dismissViewController right?

      – progNewbie
      Nov 13 '18 at 12:08

















    • I'd still need to call dismissViewController right?

      – progNewbie
      Nov 13 '18 at 12:08
















    I'd still need to call dismissViewController right?

    – progNewbie
    Nov 13 '18 at 12:08





    I'd still need to call dismissViewController right?

    – progNewbie
    Nov 13 '18 at 12:08











    0














    Try this



    let maiStoryBoard = UIStoryboard(name: "Main", bundle: nil) //Storyboard in which AuthVC lies

    let authVC = mainStoryBoard.instantiateViewControllerWithIdentifier("AuthVC") as! AuthVC
    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
    appDelegate.window?.rootViewController = authVC





    share|improve this answer



























      0














      Try this



      let maiStoryBoard = UIStoryboard(name: "Main", bundle: nil) //Storyboard in which AuthVC lies

      let authVC = mainStoryBoard.instantiateViewControllerWithIdentifier("AuthVC") as! AuthVC
      let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
      appDelegate.window?.rootViewController = authVC





      share|improve this answer

























        0












        0








        0







        Try this



        let maiStoryBoard = UIStoryboard(name: "Main", bundle: nil) //Storyboard in which AuthVC lies

        let authVC = mainStoryBoard.instantiateViewControllerWithIdentifier("AuthVC") as! AuthVC
        let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
        appDelegate.window?.rootViewController = authVC





        share|improve this answer













        Try this



        let maiStoryBoard = UIStoryboard(name: "Main", bundle: nil) //Storyboard in which AuthVC lies

        let authVC = mainStoryBoard.instantiateViewControllerWithIdentifier("AuthVC") as! AuthVC
        let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
        appDelegate.window?.rootViewController = authVC






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 13 '18 at 13:03









        SAIFSAIF

        266




        266



























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