ios - How to show last view controller with data in it after password form? -

i have 2 storyboards. first used showing password. has 2 view controllers , own navigation controller. second storyboard contains view controllers app , navigation controller. user should type in password every time launches app if wouldn't disable in settings.

here appdelegate.m :

- (void)startapp {     // override point customization after application launch.     if ([security getuseornotpassword] || (no == [settings isnotfirstapprun]) )         [self showloginscreen];     else         [self showmainvc]; }   -(void)showloginscreen {     if (no == [settings isnotfirstapprun])         [settings setdefaultlanguage];     uistoryboard *storyboard = [uistoryboard storyboardwithname:@"password" bundle:nil];     passwordvc *passwordview = [storyboard instantiateviewcontrollerwithidentifier:@"login"];     if (no == [settings isnotfirstapprun] )      {         passwordview = [passwordview initforaction:passcodeactionset];         [security saveuseornotpassword:yes];       }     else      {         passwordview = [passwordview initforaction:passcodeactionenter];         passwordview.passcode = [security getpassword]; //pass password verify       }     passwordview.delegate = self;     uinavigationcontroller *navigationcontroller= [[uinavigationcontroller alloc] initwithrootviewcontroller:passwordview];      [[(appdelegate*)[[uiapplication sharedapplication] delegate] window] setrootviewcontroller:navigationcontroller];     [self.window makekeyandvisible]; }  -(void)showmainvc {     uistoryboard *storyboard = [uistoryboard storyboardwithname:@"main" bundle:nil];     maintablevc *mainvc = [storyboard instantiateviewcontrollerwithidentifier:@"main"];     leftmenuvc *menuvc = [storyboard instantiateviewcontrollerwithidentifier:@"leftmenu"];     revealvc *mainrevealcontroller = [[revealvc alloc] initwithrearviewcontroller:menuvc frontviewcontroller:mainvc];      uinavigationcontroller *navigationcontroller= [[uinavigationcontroller alloc] initwithrootviewcontroller:mainrevealcontroller];      [[(appdelegate*)[[uiapplication sharedapplication] delegate] window] setrootviewcontroller:navigationcontroller]; } 

here delegate method password: if user type in "correct" password main screen opening:

- (void)passwordvcdidenterpasscode:(passwordvc *)controller {     [self.window.rootviewcontroller dismissviewcontrolleranimated:yes completion:nil];     [self performselector:@selector(showmainvc) withobject:nil afterdelay:0.1]; } 

and finally: displaying password every time when application become active

- (void)applicationdidbecomeactive:(uiapplication *)application {     // restart tasks paused (or not yet started) while application inactive. if application in background, optionally refresh user interface.     [self startapp]; } 

my question is: in schema displaying password form how show user's last view controller in typed , data in (text in textfields , etc)? because if user pressed home button , after launched app data disappeared , there main screen of app=) maybe should change algorithm showing password form? thanks answering , advising! have nice coding!)

the password form has nothing this, once application killed (which @ point, if in background) data in memory lost.

first of have figure out way store (persist) application's state. can maybe nsuserdefaults basic persistence, such as: user's last visited screen, last visited time, or similar.

but more advanced persistence stores data user has entered have code own data model. there many ways this, can give starting pointers:

• if have relational structured data, use core data.
• for basic storage can use property lists , files.
• for synchronisation can use dropbox or icloud api's.

first need decide need , how going approach problem. need write little bit of code working properly.