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更新布局问题 #172

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更新布局问题 #172

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更新布局问题
Han2L Jun 30, 2021
0852a80
Merge branch 'pujiaxin33:master' into master
Han2L May 15, 2024
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17 changes: 5 additions & 12 deletions Sources/Core/JXSegmentedView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -262,6 +262,11 @@ open class JXSegmentedView: UIView, JXSegmentedViewRTLCompatible {
if isFirstLayoutSubviews {
isFirstLayoutSubviews = false
collectionView.frame = targetFrame

if let listContainerView = listContainer as? UIView {
listContainerView.layoutSubviews()
}

reloadDataWithoutListContainer()
}else {
if collectionView.frame != targetFrame {
Expand Down Expand Up @@ -356,18 +361,6 @@ open class JXSegmentedView: UIView, JXSegmentedViewRTLCompatible {
collectionView.setContentOffset(CGPoint(x: max(min(maxX, targetX), minX), y: 0), animated: false)

if contentScrollView != nil {
if contentScrollView!.frame.equalTo(CGRect.zero) &&
contentScrollView!.superview != nil {
//某些情况系统会出现JXSegmentedView先布局，contentScrollView后布局。就会导致下面指定defaultSelectedIndex失效，所以发现contentScrollView的frame为zero时，强行触发其父视图链里面已经有frame的一个父视图的layoutSubviews方法。
//比如JXSegmentedListContainerView会将contentScrollView包裹起来使用，该情况需要JXSegmentedListContainerView.superView触发布局更新
var parentView = contentScrollView?.superview
while parentView != nil && parentView?.frame.equalTo(CGRect.zero) == true {
parentView = parentView?.superview
}
parentView?.setNeedsLayout()
parentView?.layoutIfNeeded()
}

contentScrollView!.setContentOffset(CGPoint(x: CGFloat(selectedIndex) * contentScrollView!.bounds.size.width
, y: 0), animated: false)
}
Expand Down