Snapkit: UILayoutGuide

[monowerker]

I've previously used Masonry and am now looking at SnapKit for a new project, has there been any discussion or thoughts about what support for the new UILayoutGuide class in iOS9 would look like in SnapKit?

[robertjpayne]

@monowerker you should be able to use them already via UIViewController.topLayoutGuide.top/bottom or you can pass a UILayoutGuide/UILayoutSupport object directly into the equalTo API!

Let me know if you need something else particular.

[robertjpayne]

Closing this, if you feel it's not resolved please re-open.

[Ziewvater]

It doesn't seem like I'm able to use UILayoutGuide in the equalTo API as you've mentioned above.

With code like the following I get an error

let someView = UIView()
let label = UILabel()

someView.addSubView(label)

let layoutGuide = UILayoutGuide()
someView.addLayoutGuide(layoutGuide)

label.snp_makeConstraints { make in
    make.left.equalTo(layoutGuide)
    // ^ Cannot invoke 'equalTo' with an argument list of type '(UILayoutGuide)'
}

I'm using SnapKit 0.20.0.

[robertjpayne]

@Ziewvater just want to 100% make sure you have import SnapKit at the top of your Swift file?

[Ziewvater]

I didn't before. Just tried again with it imported at the top and I'm still getting the same error.

Is the fact that SnapKit methods were available without import SnapKit something I should be concerned about too? I've been getting confused about pods that seemingly don't need import statements to work.

Edit: Hold on, just realized that I had tested it without the import yesterday with 0.20.0, and with the import today on 0.18.0, so that's not very consistent. I'll check with an empty project with 0.20.0.

[Ziewvater]

Just tested again in an empty project with just SnapKit added through CocoaPods. Trying to use a UILayoutGuide as an argument for equalTo brings up the same error I mentioned above.

[PacificCoaster]

I have come into this discussion somewhat late. I have tried several variations on trying to get something to work, and they all fail.

Could somebody provide an example that works.

Alternatively, can somebody provide an example of adding constraints to my View Controller's view such that it takes the Navigation Bar into account?

Other than that issue, SnapKit seems to be working pretty well for me.

[julianwilson]

I'm trying to use this with the topLayoutGuide bottomAnchor, is this currently possible?

Code to replace:
scrollView.topAnchor.constraintEqualToAnchor(topLayoutGuide.bottomAnchor).active = true

Currently trying:
scrollView.snp_makeConstraints { (make) -> Void in make.top.equalTo(self.topLayoutGuide.bottomAnchor) }

But since .bottomAnchor isn't of UILayoutGuide type it won't work.

[PacificCoaster]

I eventually gave up on it. I could not get any variant to work.

I'm currently using a hack to set the top edge to 64.0, as i 'know' that all
of my View Controller Views are managed by a Navigation Controller.

On Jun 16, 2016, at 7:38 PM, julianwilson [email protected] wrote:

I'm trying to use this with the topLayoutGuide bottomAnchor, is this currently possible?

Code to replace:
scrollView.topAnchor.constraintEqualToAnchor(topLayoutGuide.bottomAnchor).active = true

Currently trying:
scrollView.snp_makeConstraints { (make) -> Void in
make.top.equalTo(self.topLayoutGuide.bottomAnchor)
}

But since .bottomAnchor isn't of UILayoutGuide type it won't work.

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[robertjpayne]

@julianwilson what you want to do is do equalTo(self.snp_topLayoutGuideBottom) I believe

[prattcmp]

Still unable to get this to work after looking through various issues.