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Fix device rotation layout bug

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This commit is contained in:
Steven Deutsch
2017-08-03 02:28:33 -05:00
parent cee4b1c6d0
commit 2f18eb388a
1 changed files with 6 additions and 8 deletions
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Sources/MessagesCollectionViewFlowLayout.swift
+6 -8
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@@ -58,17 +58,12 @@ open class MessagesCollectionViewFlowLayout: UICollectionViewFlowLayout {
messageContainerInsets = UIEdgeInsets(top: 7, left: 14, bottom: 7, right: 14)
super.init()
sectionInset = UIEdgeInsets(top: 4, left: 8, bottom: 4, right: 8)
NotificationCenter.default.addObserver(self, selector: #selector(invalidateLayoutForOrientationChange), name: .UIDeviceOrientationDidChange, object: nil)
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
deinit {
NotificationCenter.default.removeObserver(self, name: .UIDeviceOrientationDidChange, object: nil)
}
// MARK: - Methods
override open func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
@@ -119,12 +114,15 @@ open class MessagesCollectionViewFlowLayout: UICollectionViewFlowLayout {
override open func shouldInvalidateLayout(forBoundsChange newBounds: CGRect) -> Bool {
return collectionView?.bounds.width != newBounds.width
return collectionView?.bounds.width != newBounds.width || collectionView?.bounds.height != newBounds.height
}
func invalidateLayoutForOrientationChange() {
invalidateLayout()
open override func invalidationContext(forBoundsChange newBounds: CGRect) -> UICollectionViewLayoutInvalidationContext {
let context = super.invalidationContext(forBoundsChange: newBounds)
guard let flowLayoutContext = context as? UICollectionViewFlowLayoutInvalidationContext else { return context }
flowLayoutContext.invalidateFlowLayoutDelegateMetrics = shouldInvalidateLayout(forBoundsChange: newBounds)
return flowLayoutContext
}
}