通過上面兩張圖檔可以看出來，他們的安全域都一樣，StatusBar的高都是44pt，底部都有Home虛拟按鍵區34pt，是以做适配的時候隻需要判斷是iPhoneX或者是iPhoneXS或者是iPhoneXR或者是iPhoneXSMax就行。
//獲得螢幕的寬高
#define kScreenWidth ([UIScreen mainScreen].bounds.size.width)
#define kScreenHeight ([UIScreen mainScreen].bounds.size.height)
//iPhoneX / iPhoneXS
#define isIphoneX_XS (kScreenWidth == 375.f && kScreenHeight == 812.f ? YES : NO)
//iPhoneXR / iPhoneXSMax
#define isIphoneXR_XSMax (kScreenWidth == 414.f && kScreenHeight == 896.f ? YES : NO)
//異性全面屏
#define isFullScreen (isIphoneX_XS || isIphoneXR_XSMax)
// Status bar height.
#define StatusBarHeight (isFullScreen ? 44.f : 20.f)
// Navigation bar height.
#define NavigationBarHeight 44.f
// Tabbar height.
#define TabbarHeight (isFullScreen ? (49.f+34.f) : 49.f)
// Tabbar safe bottom margin.
#define TabbarSafeBottomMargin (isFullScreen ? 34.f : 0.f)
// Status bar & navigation bar height.
#define StatusBarAndNavigationBarHeight (isFullScreen ? 88.f : 64.f)
判斷是不是異性全面螢幕
#define isFullScreen (isIphoneX_XS || isIphoneXR_XSMax)
是在适配iPhoneX的基礎上加的判斷，OK打完收工！