ios - Initiating all objects in viewController when launched from a push notification -


i have viewcontroller x (not initial view). x childviewcontroller of several parents (several viewcontroller have x child.) on x, there label, table , navigation bar left bar button "pops" parent. when app launched normally, segues, poptoparentviewcontroller, buttons function properly. however, if launch app push notification, x appears navigation bar , button (but not function) , table view.

i don't know why label not showing! , button not go "back". know has "no parent" because i've set "root" in code below.

how can implement want code?

the following in appdelegate.m

- (void) application:(uiapplication *)application didreceiveremotenotification:(nsdictionary *)userinfo {     if ( application.applicationstate == uiapplicationstateinactive || application.applicationstate == uiapplicationstatebackground  ) {      uistoryboard *mainstoryboard = [uistoryboard storyboardwithname:@"mainstoryboard"                                                              bundle: nil];     notificationsviewcontroller *viewcontroller= [mainstoryboard instantiateviewcontrollerwithidentifier:@"notificationsviewcontroller"];     uinavigationcontroller *nav = [[uinavigationcontroller alloc]                                    initwithrootviewcontroller:viewcontroller];     [_window setrootviewcontroller:nav]; } }

first of all, application launched - (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions method. shall examine launchoptions dictionary check if app opened because of notification. in launch method can access notification object way:

- (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions; {     // setup navigation controller here, assume have in code      nsdictionary *dictionary = [launchoptions objectforkey:uiapplicationlaunchoptionsremotenotificationkey];      if (dictionary != nil)     {         nslog(@"%@: did launch notification: %@", [self class], dictionary);          // put navigation controllers on nav controller stack david described     }     [[self window] setrootviewcontroller:navigationcontroller];     [self.window makekeyandvisible];      return yes;  }

the method - (void) application:(uiapplication *)application didreceiveremotenotification:(nsdictionary *)userinfo called only if app had been launched. called when app switching background foreground or when runs. method never called when application starts new process.


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