initWithCoder shows wrong frame in ios

Question

I am using storyboard in my project. Storyboard has a custom view with auto layout.

CustomView.h

-(id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self) {

        NSLog (@"view: %f", self.frame.size.width);   //Returns wrong
        NSLog (@"view: %f", self.bounds.size.width);  //Returns wrong
}
return self;
}

If i run the app, it shows wrong frame.

Help me to solve this

What do you mean by "wrong"? What did you expect and what did you get? — justMartin
– justMartin, Commented Jun 11, 2015 at 10:54
@justMartin, if I run in iPhone6 then it should return 375 instead of 320. — user2526811
– user2526811, Commented Jun 11, 2015 at 10:56
Wrong compared to what? Do you mean that your View looks different in Interface Builder and on actual device/simulator? — NKorotkov
– NKorotkov, Commented Jun 11, 2015 at 10:57
@NKorotkov, if I run in iPhone6 then it should return 375 instead of 320 — user2526811
– user2526811, Commented Jun 11, 2015 at 10:58
Given that a view's frame is dependent on the views it is a subview of and the constraints setup across the entire view hierarchy, the only safe place to acquire frame sizes is from viewWillAppear or later once full layout has happened. — Rory McKinnel
– Rory McKinnel, Commented Jun 11, 2015 at 11:22

Leo · Accepted Answer · 2018-09-05 11:03:40Z

2

Because in initWithCoder,the constraints has not been applied to the view.

Example:

Code

-(void)viewDidAppear:(BOOL)animated{
    NSLog (@"viewDidAppear: %f", self.testview.frame.size.width);
}
-(void)viewDidLayoutSubviews{
    NSLog (@"viewDidLayoutSubviews: %f", self.testview.frame.size.width);
}
-(void)awakeFromNib{
    NSLog (@"awakeFromNib: %f", self.testview.frame.size.width);
}
-(instancetype)initWithCoder:(NSCoder *)aDecoder{
    if (self = [super initWithCoder:aDecoder]) {
        NSLog (@"initWithCoder: %f", self.testview.frame.size.width);
    }
    return self;
}

And log

2015-06-11 19:09:27.647 OCTest[717:20692] initWithCoder: 0.000000
2015-06-11 19:09:27.649 OCTest[717:20692] awakeFromNib: 0.000000
2015-06-11 19:09:27.696 OCTest[717:20692] viewDidLayoutSubviews: 320.000000
2015-06-11 19:09:27.746 OCTest[717:20692] viewDidAppear: 320.000000

edited Sep 5, 2018 at 11:03

answered Jun 11, 2015 at 11:12

Leo

24.7k11 gold badges73 silver badges92 bronze badges

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

4 Comments

user2526811 Over a year ago

I have use custom view i.e. subclass of UIVIew & viewDidLayoutSubviews not called in it.

Leo Over a year ago

I know.Just from the aspect of UIViewController to tell you that in initWithCoder,it is too early to get the frame.

Leo Over a year ago

When the super view layout subview,the constraints is applied. Only after that,you can get the right frame

user2526811 Over a year ago

So, what to do with custom view loads from storyboard directly

Mikhey Stepanov · Accepted Answer · 2016-03-04 20:39:37Z

-1

I met the same problem, if you want to take the size of screen in InitWithCoder method - take it this way

CGFloat x = [UIScreen mainScreen].bounds.size.width;
CGFloat y = [UIScreen mainScreen].bounds.size.height;

Not from the still-not-existing bounds of the UIView, but out of the UIScreen.

answered Mar 4, 2016 at 20:39

Mikhey Stepanov

1

Collectives™ on Stack Overflow

initWithCoder shows wrong frame in ios

2 Answers 2

4 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related