CODEWITHSUNDEEP
iosobjective-cuiwindow
Ekta Padaliya
Ekta Padaliya

Reputation: 5799

Remove view of UIViewController from UIWindow

When user click on add button, I'm adding view on UIWindow. Now If user clicks on add button again I want to first remove that view and add it again.

I have used this code to add view on UIWindow :

ProgressVC *vc = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"IDProgressVC"];
[[[[UIApplication sharedApplication] delegate]window] addSubview:vc.view];

For Remove I have tried this code :

[vc.view removeFromSuperview];
[[[[UIApplication sharedApplication] delegate]window] setNeedsLayout];
vc = nil;

Any help will be appreciated.

Upvotes: 0

Views: 3581

Answers (3)

Vijay Patidar
Vijay Patidar

Reputation: 151

In Swift 3.2

let storybord = UIStoryboard.init(name: "Main", bundle: nil)
let appDelegate = UIApplication.shared.delegate as! AppDelegate

let vc = storybord.instantiateViewController(withIdentifier: "IDProgressVC")
               as IDProgressVC

currentVC = vc.view

appDelegate.window?.addSubview(currentVC!)

// Remove it
currentVC?.removeFromSuperview()

appDelegate.window?.setNeedsLayout()

currentVC = nil

Upvotes: 1

Rohit Pradhan
Rohit Pradhan

Reputation: 3875

Try This

// Make this global property

@property(nonatomic, strong) UIView * currentView;

//store the view in gloabal property
ProgressVC *vc = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"IDProgressVC"];
currentView = vc.view;
[[[[UIApplication sharedApplication] delegate]window] addSubview:currentView];

//remove it 
[currentView removeFromSuperview];
[[[[UIApplication sharedApplication] delegate]window] setNeedsLayout];
currentView = nil;

Upvotes: 3

Ketan Parmar
Ketan Parmar

Reputation: 27438

Make sure that both vc is same object not different.

I mean when you add vc.view at that time you alloc and init object and when you remove then again you alloc and init then both are different instance of same class.

So it's better to declare instance variable or property like,

ProgressVC *vc and alloc it only once and add or remove this vc from window.

It may solve your issue i think.

Upvotes: 1

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