iOS 适配iPhone X的方法

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。

/** 
 * 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。