[iOS]适配iPhoneX

[iOS]适配iPhone X

因为iPhone X奇特的刘海存在&＃xff0c;iOS11之后系统深化了“安全区域”概念&＃xff0c;安全区域就是从屏幕上切除最大的矩形之外的区域。
iOS11后UIScrollView新增contentInsetAdjustmentBehavior属性&＃xff0c;默认配置UIScrollViewContentInsetAdjustmentAutomatic&＃xff0c;效果上就是没使用安全区域。若针对具体页面需要使用安全区域&＃xff0c;可以查看API中新增加的那些属性。


/*** 适配iPhone X的安全区域* isUse &＃61; 1 表示使用安全区域* isUse &＃61; 0 表示不使用安全区域*/
&＃43; (void)adaptationSafeAreaWith:(UIScrollView *)sv useArea:(NSInteger)isUse {if ([[sv class] isSubclassOfClass:[UIWebView class]]) {UIWebView *webView &＃61; (UIWebView *)sv;for (UIView *aView in [webView subviews]) {if ([aView isKindOfClass:[UIScrollView class]]) {sv &＃61; (UIScrollView *)aView;break;}}}
#ifdef __IPHONE_11_0if ([sv respondsToSelector:&＃64;selector(setContentInsetAdjustmentBehavior:)]) {if (isUse) {if (&＃64;available(iOS 11.0, *)) {sv.contentInsetAdjustmentBehavior &＃61; UIScrollViewContentInsetAdjustmentNever;if ([[sv class] isSubclassOfClass:[UITableView class]]) {UITableView *tv &＃61; (UITableView *)sv;[tv setInsetsContentViewsToSafeArea:NO];}} else {// Fallback on earlier versions}} else {if (&＃64;available(iOS 11.0, *)) {sv.contentInsetAdjustmentBehavior &＃61; UIScrollViewContentInsetAdjustmentAlways;} else {// Fallback on earlier versions}}}
#endif
}



typedef NS_ENUM(NSInteger, UIScrollViewContentInsetAdjustmentBehavior) {UIScrollViewContentInsetAdjustmentAutomatic, // Similar to .scrollableAxes, but for backward compatibility will also adjust the top & bottom contentInset when the scroll view is owned by a view controller with automaticallyAdjustsScrollViewInsets &＃61; YES inside a navigation controller, regardless of whether the scroll view is scrollableUIScrollViewContentInsetAdjustmentScrollableAxes, // Edges for scrollable axes are adjusted (i.e., contentSize.width/height > frame.size.width/height or alwaysBounceHorizontal/Vertical &＃61; YES)UIScrollViewContentInsetAdjustmentNever, // contentInset is not adjustedUIScrollViewContentInsetAdjustmentAlways, // contentInset is always adjusted by the scroll view&＃39;s safeAreaInsets
} API_AVAILABLE(ios(11.0),tvos(11.0));