Is it possible to access/manipulate the constraints in a nib file from the view it's loaded into?

Question

Example project: http://cl.ly/1g1L3E2Z0r1c

I create a nib file and then create some views in it, which I then load into another view controller. In the view that I bring in, it's a subclass of UIView where I have outlets set up for its properties. I have one specifically for its constraint from distance from the top.

But when I try to access it in code (like as follows), I can't, it states it's null:

self.tutorialScreen3.textLabelDistanceFromTop.constant += 150.0;
NSLog(@"%@", self.tutorialScreen3.textLabelDistanceFromTop);

What am I doing wrong?

miken32 · Accepted Answer · 2025-06-12 19:01:04Z

0

In this line

[[[NSBundle mainBundle] loadNibNamed:@"View" owner:nil options:nil] lastObject];

you're loading the last view from your View.xib file, and it's view 3, but you're property textLabelDistanceFromTop is not connected with this view, but with view 2.

You just need to make in view 3 the same constraints you made in view 2 and to connect the textLabelDistanceFromTop property with appropriate constraint in view 3, and it wan't be nil any more.

edited Jun 12 at 19:01

miken32

42.5k16 gold badges127 silver badges177 bronze badges

answered Nov 9, 2013 at 2:09

Igor

1,33210 silver badges15 bronze badges

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

Collectives™ on Stack Overflow

Is it possible to access/manipulate the constraints in a nib file from the view it's loaded into?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related