升級Xcode 9 + iOS 11後，發現原本沒問題的collectionView和tableView像是中了風一樣，頭部刷新UI出現了錯亂。
查閱發現 iOS11棄用了automaticallyAdjustsScrollViewInsets屬性，新增contentInsetAdjustmentBehavior來替代它
關於 contentInsetAdjustmentBehavior
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@available(iOS 11.0, *)public enum UIScrollViewContentInsetAdjustmentBehavior : Int { case automatic // Similar to .scrollableAxes, but will also adjust the top & bottom contentInset when the scroll view is owned by a view controller with automaticallyAdjustsScrollViewContentInset = YES inside a navigation controller, regardless of whether the scroll view is scrollable case scrollableAxes // Edges for scrollable axes are adjusted (i.e., contentSize.width/height > frame.size.width/height or alwaysBounceHorizontal/Vertical = YES) case never // contentInset is not adjusted case always // contentInset is always adjusted by the scroll view's safeAreaInsets} |
UIScrollViewContentInsetAdjustmentBehavior 是一個枚舉類型,值有以下幾種:
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-automatic 和scrollableAxes一樣,scrollView會自動計算和適應頂部和底部的內邊距並且在scrollView 不可滾動時,也會設置內邊距.
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-scrollableAxes 自動計算內邊距.
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-never不計算內邊距
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-always 根據safeAreaInsets 計算內邊距
很顯然,我們這裏要設置爲 never
開始適配
OC 中
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//聲明tableView的位置 添加下面代碼 if (@available(iOS 11.0, *)) { _tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; _tableView.contentInset = UIEdgeInsetsMake(64, 0, 49, 0); _tableView.scrollIndicatorInsets = _tableView.contentInset; } |
swift 中
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//聲明tableView的位置 添加下面代碼 if #available(iOS 11.0, *) { tableView.contentInsetAdjustmentBehavior = .never tableView.contentInset = UIEdgeInsetsMake(64, 0, 49, 0) tableView.scrollIndicatorInsets = tableView.contentInset } |