InitWithCoder never called for Cocoa NSView based class

Question

I create a XIB.

I create this class called MyCustomView and assign it to the XIB's File Owner.

- (instancetype)initWithCoder:(NSCoder *)aDecoder{
  self = [super initWithCoder:aDecoder];
  if (self) [self load];
  return self;
}

- (instancetype)initWithFrame:(CGRect)frame {
  self = [super initWithFrame:frame];
  if (self) [self load];
  return self;
}

- (void)load {

  NSArray* topLevelObjects;
  [[NSBundle mainBundle] loadNibNamed:@"MyCustomView"
                                owner:self
                      topLevelObjects:&topLevelObjects];

  NSView* view;
  for (id aView in topLevelObjects) {
    if ([umaVista isKindOfClass:[NSView class]]) {
      view = umaVista;
      break;
    }
  }

  [self addSubview:view];
  view.frame = self.bounds;  

}

I create a NSView on the main app.

I change that view to the MyCustomView.

I run the app. MyCustomView's initWithCoder does not run. initWithFrame does not run. awakeFromNib does not run.

Nothing happens.

Any ideas?

What do you mean by "assign it to the XIB's first responder"? You can't "assign" anything to First Responder, that's a proxy item that represents the dynamic first responder value. — Lily Ballard
– Lily Ballard, Commented Sep 5, 2017 at 21:33
what do you mean? this is how all tutorials on the web tell. — Duck
– Duck, Commented Sep 5, 2017 at 21:34
Closely related (same cause, really): -awakeFromNib for File's Owner — jscs
– jscs, Commented Sep 5, 2017 at 21:38

jscs · Accepted Answer · 2017-09-05 21:47:56Z

1

"File's Owner" as I've written elsewhere, isn't a real object in the archive. It's a placeholder. When you unpack the nib, a pre-existing object gets used.

It looks like you should just be putting an instance of your custom view into the nib. Don't make it File's Owner, just drag a view out from the object palette and then change its class in the Identity Inspector (right pane, top; press ⌘-⌥-3). Build the subviews in the nib too.

Then get your NSBundle to load the nib for you. Your custom view will get initWithCoder: and awakeFromNib, and you won't have to grovel through the hierarchy to find a particular subview.

answered Sep 5, 2017 at 21:47

jscs

64k13 gold badges155 silver badges200 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

InitWithCoder never called for Cocoa NSView based class

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related