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因为iphone x奇特的刘海存在，ios11之后系统深化了“安全区域”概念，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，默认配置uiscrollviewcontentinsetadjustmentautomatic，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，可以查看api中新增加的那些属性。
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/**
* 适配iphone x的安全区域
* isuse = 1 表示使用安全区域
* isuse = 0 表示不使用安全区域
*/
+ (void)adaptationsafeareawith:(uiscrollview *)sv usearea:(nsinteger)isuse {
if ([[sv class] issubclassofclass:[uiwebview class]]) {
uiwebview *webview = (uiwebview *)sv;
for (uiview *aview in [webview subviews]) {
if ([aview iskindofclass:[uiscrollview class]]) {
sv = (uiscrollview *)aview;
break;
}
}
}
#ifdef __iphone_11_0
if ([sv respondstoselector:@selector(setcontentinsetadjustmentbehavior:)]) {
if (isuse) {
if (@available(ios 11.0, *)) {
sv.contentinsetadjustmentbehavior = uiscrollviewcontentinsetadjustmentnever;
if ([[sv class] issubclassofclass:[uitableview class]]) {
uitableview *tv = (uitableview *)sv;
[tv setinsetscontentviewstosafearea:no];
}
} else {
// fallback on earlier versions
}
} else {
if (@available(ios 11.0, *)) {
sv.contentinsetadjustmentbehavior = 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 = yes inside a navigation controller, regardless of whether the scroll view is scrollable
uiscrollviewcontentinsetadjustmentscrollableaxes, // edges for scrollable axes are adjusted (i.e., contentsize.width/height > frame.size.width/height or alwaysbouncehorizontal/vertical = yes)
uiscrollviewcontentinsetadjustmentnever, // contentinset is not adjusted
uiscrollviewcontentinsetadjustmentalways, // contentinset is always adjusted by the scroll view's safeareainsets
} api_available(ios(11.0),tvos(11.0));
以上这篇ios 适配iphone x的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持移动技术网。
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