Adding Subview creates layout issue

Question

I'm programmatically adding a view inside another view like so:

func addViewControllerToSpecificView( view: UIView, controller: UIViewController) {
        controller.willMoveToParentViewController(self)
        view.addSubview(controller.view)           
        self.addChildViewController(controller)
        controller.didMoveToParentViewController(self)
    }

The issue is that the parent view ends up being wider than it should be (the width of the screen).

When I don't load the subview using the above method, the positioning is perfect (no extra padding). I have no idea why it's adding an extra ~30px

You need to add autolayout constraints.

nhgrif
– nhgrif

2015-11-23 13:13:19 +00:00
Commented Nov 23, 2015 at 13:13 — nhgrif
– nhgrif, Commented Nov 23, 2015 at 13:13
Please add subview frame size code.

Keyur Hirani
– Keyur Hirani

2015-11-23 13:14:24 +00:00
Commented Nov 23, 2015 at 13:14 — Keyur Hirani
– Keyur Hirani, Commented Nov 23, 2015 at 13:14

Mehul Patel · Accepted Answer · 2015-12-03 06:15:00Z

1

add following line in your code....

controller.view.frame = self.view.layer.bounds;

this will fix the problem.

edited Dec 3, 2015 at 6:15

Mehul Patel

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answered Nov 23, 2015 at 13:18

Abhishek

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6 Comments

Mehul Patel Over a year ago

I'm agree with @nhgrif, You have to use Auto layout.

denislexic Over a year ago

Worked! I just changed the self.view.layer.bounds to the dedicated view it's being added to, so view.layer.bounds, and working like a charm! Thanks.

denislexic Over a year ago

What's the difference between auto-layout and this?

Mehul Patel Over a year ago

@denislexic: This is matter of choice, but at the end you'll realise "Autolayout" is that how useful and great feature!

nhgrif Over a year ago

It's not a matter of choice. What happens when your parent view's size changes? Say, for example, when your app is launched on a new iPad Pro in split screen mode.

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Mehul Patel · Accepted Answer · 2015-11-23 13:15:11Z

0

I dont know that are you adding Auto layout constraint for this view.

Please check that this layout constraints are added in your code, if not then add below constraint after you add childViewController.

let metrices = ["width" : view.bounds.size.width, "height" : view.bounds.size.height]

view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[childView(width)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: metrices, views: ["childView" : controller.view]))

view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:[childView(height)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: metrices, views: ["childView" : controller.view]))

answered Nov 23, 2015 at 13:15

Mehul Patel

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2 Comments

nhgrif Over a year ago

No... these autolayout constraints probably don't do anything different. He almost certainly needs to add autolayout constraints between the child view controller's view and the parent view he's adding it to...

Mehul Patel Over a year ago

@nhgrif Yes, He has to check by implementing required constraints for adding view. Answer is general guidelines to add view with constraints using VFL (Visual Formatting language), probably he'll use it in a way.

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