Swift programmatically navigate to another view controller scene

Question

I m using following code to programmatically navigate to another ViewController  It works fine  but it some how hides the navigation bar  How do I fix this   the navigation bar is created by embeding the ViewController in the navigation controller if that matters    let storyBoard   UIStoryboard   UIStoryboard name   Main   bundle nil   let nextViewController   storyBoard instantiateViewControllerWithIdentifier  nextView   as NextViewController self presentViewController nextViewController  animated true  completion nil

User · Answer

According to  jaiswal Rajan in his answer  You can do a pushViewController like this   let storyBoard  UIStoryboard   UIStoryboard name   NewBotStoryboard   bundle  nil  let newViewController   storyBoard instantiateViewController withIdentifier   NewViewController   as  NewViewController self navigationController  pushViewController newViewController  animated  true

User · Answer

The above code works well but if you want to navigate from an NSObject class  where you can not use self present  let storyBoard   UIStoryboard name  quot Main quot   bundle  nil  if let conVC   storyBoard instantiateViewController withIdentifier   quot SoundViewController quot   as  SoundViewController      let navController   UIApplication shared keyWindow  rootViewController as  UINavigationController            navController pushViewController conVC  animated  true

User · Answer

Swift 5   The default modal presentation style is a card  This shows the previous view controller at the top and allows the user to swipe away the presented view controller    To retain the old style you need to modify the view controller you will be presenting like this    newViewController modalPresentationStyle    fullScreen   This is the same for both programmatically created and storyboard created controllers    Swift 3  With a programmatically created Controller  If you want to navigate to Controller created Programmatically  then do this   let newViewController   NewViewController   self navigationController  pushViewController newViewController  animated  true    With a StoryBoard created Controller  If you want to navigate to Controller on StoryBoard with Identifier  newViewController   then do this   let storyBoard  UIStoryboard   UIStoryboard name   Main   bundle  nil  let newViewController   storyBoard instantiateViewController withIdentifier   newViewController   as  NewViewController         self present newViewController  animated  true  completion  nil

User · Answer

All other answers sounds good  I would like to cover my case  where I had to make an animated LaunchScreen  then after 3 to 4 seconds of animation the next task was to move to Home screen  I tried segues  but that created problem for destination view  So at the end I accessed AppDelegates s Window property and I assigned a new NavigationController screen to it  let storyboard   UIStoryboard name   quot Main quot   bundle  nil  let appDelegate   UIApplication shared delegate as  AppDelegate let homeVC   storyboard instantiateViewController withIdentifier   quot HomePageViewController quot   as  HomePageViewController    Below s navigationController is useful if u want NavigationController in the destination View let navigationController   UINavigationController rootViewController  homeVC  appDelegate window  rootViewController   navigationController  If incase  u don t want navigationController in the destination view then just assign as  let storyboard   UIStoryboard name   quot Main quot   bundle  nil  let appDelegate   UIApplication shared delegate as  AppDelegate let homeVC   storyboard instantiateViewController withIdentifier   quot HomePageViewController quot   as  HomePageViewController appDelegate window  rootViewController   homeVC

User · Answer

OperationQueue main addOperation      let storyBoard  UIStoryboard   UIStoryboard name   Main   bundle  nil     let newViewController   storyBoard instantiateViewController withIdentifier   Storyboard ID   as  NewViewController    self present newViewController  animated  true  completion  nil      It worked for me when I put the code inside of the OperationQueue main addOperation  that will execute in the main thread for me

User · Answer

You should push the new viewcontroller by using current navigation controller  not present   self navigationController pushViewController nextViewController  animated  true

User · Answer

So If you present a view controller it will not show in navigation controller  It will just take complete screen  For this case you have to create another navigation controller and add your nextViewController as root for this and present this new navigationController   Another way is to just push the view controller   self presentViewController nextViewController  animated true  completion nil    For more info check Apple documentation -  https   developer apple com library ios documentation UIKit Reference UIViewController Class    apple ref doc uid TP40006926-CH3-SW96

User · Answer

SWIFT 4 x  The Strings in double quotes always confuse me  so I think answer to this question needs some graphical presentation to clear this out   For a banking app  I have a LoginViewController and a BalanceViewController  Each have their respective screens   The app starts and shows the Login screen  When login is successful  app opens the Balance screen   Here is how it looks       The login success is handled like this   let storyBoard  UIStoryboard   UIStoryboard name   Balance   bundle  nil  let balanceViewController   storyBoard instantiateViewController withIdentifier   balance   as  BalanceViewController self present balanceViewController  animated  true  completion  nil    As you can see  the storyboard ID  balance  in small letters is what goes in the second line of the code  and this is the ID which is defined in the storyboard settings  as in the attached screenshot   The term  Balance  with capital  B  is the name of the storyboard file  which is used in the first line of the code   We know that using hard coded Strings in code is a very bad practice  but somehow in iOS development it has become a common practice  and Xcode doesn t even warn about them

[ios] Swift programmatically navigate to another view controller/scene

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