升级Xcode 9 + iOS 11后，发现原本没问题的collectionView和tableView像是中了风一样，头部刷新UI出现了错乱。
查阅发现 iOS11弃用了automaticallyAdjustsScrollViewInsets属性，新增contentInsetAdjustmentBehavior来替代它
关于 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 是一个枚举类型,值有以下几种:
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-automatic 和scrollableAxes一样,scrollView会自动计算和适应顶部和底部的内边距并且在scrollView 不可滚动时,也会设置内边距.
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-scrollableAxes 自动计算内边距.
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-never不计算内边距
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-always 根据safeAreaInsets 计算内边距
很显然,我们这里要设置为 never
开始适配
OC 中
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//声明tableView的位置 添加下面代码 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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//声明tableView的位置 添加下面代码 if #available(iOS 11.0, *) { tableView.contentInsetAdjustmentBehavior = .never tableView.contentInset = UIEdgeInsetsMake(64, 0, 49, 0) tableView.scrollIndicatorInsets = tableView.contentInset } |