Issue #98
The safeAreaLayoutGuide was introduced in iOS 11. And it is advised to stop using topLayoutGuide bottomLayoutGuide as these are deprecated.
To use safeAreaLayoutGuide, you need to do iOS version check
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| if #available(iOS 11.0, *) {
headerView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 20)
} else {
headerView.topAnchor.constraint(equalTo: view.topAnchor, constant: 20)
}
|
Maybe we can introduce a common property that can be used across many iOS versions, let’s call it compatibleSafeAreaLayoutGuide
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| extension UIView {
var compatibleSafeAreaLayoutGuide: UILayoutGuide {
if #available(iOS 11, *) {
return safeAreaLayoutGuide
} else {
if let layoutGuide = self.associatedLayoutGuide {
return layoutGuide
} else {
let layoutGuide = UILayoutGuide()
Constraint.on(
layoutGuide.topAnchor.constraint(equalTo: topAnchor),
layoutGuide.bottomAnchor.constraint(equalTo: bottomAnchor),
layoutGuide.leftAnchor.constraint(equalTo: leftAnchor),
layoutGuide.rightAnchor.constraint(equalTo: rightAnchor)
)
self.associatedLayoutGuide = layoutGuide
return layoutGuide
}
}
}
private struct AssociatedKeys {
static var layoutGuide = "layoutGuide"
}
fileprivate var associatedLayoutGuide: UILayoutGuide? {
get {
return objc_getAssociatedObject(self, &AssociatedKeys.layoutGuide) as? UILayoutGuide
}
set {
if let newValue = newValue {
objc_setAssociatedObject(
self, &AssociatedKeys.layoutGuide,
newValue as UILayoutGuide?,
.OBJC_ASSOCIATION_RETAIN_NONATOMIC
)
}
}
}
}
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This way we can simply do
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| headerView.topAnchor.constraint(equalTo: view.compatibleSafeAreaLayoutGuide.topAnchor, constant: 20)
|
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