Reloading a ViewController

Question

I have a View controller displaying some information  not table views    I have an update call to a remote server which fills my data base  I would like to completely reload my ViewController after the update call is done   What should I do

User · Answer

If you want to reload a ViewController initially loaded from a XIB  you can use the next UIViewController extension   extension UIViewController       func reloadViewFromNib             let parent   view superview         view removeFromSuperview           view   nil         parent  addSubview view     This line causes the view to be reloaded

User · Answer

If you know your database has been updated and you want to just refresh your ViewController  which was my case   I didn t find another solution but what I did was when my database updated  I called        self viewDidLoad     again  and it worked  Remember if you override other viewWillAppear or loadView then call them too in same order  like       self viewDidLoad        self viewWillAppear YES     I think there should be a more specific solution like refresh button in browser

User · Answer

You Must use   - void viewWillAppear  BOOL animated   and set your entries like you want

User · Answer

Try this  You have to call both methods to reload view  as this one works for me   -Objective-C   self viewDidLoad     self viewWillAppear YES     -Swift  self viewDidLoad   self viewWillAppear true

User · Answer

Reinitialise the view controller  YourViewController  vc     YourViewController alloc  initWithNibName   YourViewControllerIpad  bundle nil    self navigationController vc animated NO

User · Answer

It is not advised to call ViewDidLoad or ViewWillAppear by yourself   In the ViewDidLoad include a loadData   function to prepare the data  This is executed in the initial run   When you want to reload  call loadData   again to get the data from model  In a tableView call reloadData   or in a regular view setNeedsDisplay

User · Answer

You really don t need to do    self view setNeedsDisplay     Honestly  I think it s  let s hope for the best  type of solution  in this case  There are several approaches to update your UIViews    KVO Notifications Delegation   Each one has is pros and cons  Depending of what you are updating and what kind of  connection  you have between your business layer  the server connectivity  and the UIViewController  I can recommend one that would suit your needs

User · Answer

Direct to your ViewController again  in my situation   self view setNeedsDisplay   and  self viewDidLoad    self viewWillAppear YES  does not work  but the method below worked   In objective C  UIStoryboard  MyStoryboard    UIStoryboard storyboardWithName   Main  bundle nil    UIViewController  vc    MyStoryboard instantiateViewControllerWithIdentifier   ViewControllerStoryBoardID     self presentViewController vc animated YES completion nil     Swift   let secondViewController   self storyboard  instantiateViewControllerWithIdentifier  ViewControllerStoryBoardID      self presentViewController secondViewController  animated  true  completion  nil

User · Answer

For UIViewController just load your view again - func rightButtonAction             if isEditProfile              print  quot Submit Clicked  Call Update profile API quot               isEditProfile   false             self viewWillAppear true            else               print  quot Edit Clicked  Call Edit profile API quot               isEditProfile   true             self viewWillAppear true                   I am loading my view controller on profile edit and view profile  According to the Bool value isEditProfile updating the view in viewWillAppear method

User · Answer

Update the data     change button titles  whatever stuff you have to update    then just call    self view setNeedsDisplay

[ios] Reloading a ViewController

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