iOS-导航栏、状态栏及Tabbar高度（区分iPhone X与

#define kIs_iphone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#define kIs_iPhoneX kScreenWidth >=375.0f && kScreenHeight >=812.0f&& kIs_iphone
 

/*状态栏高度*/
#define kStatusBarHeight (CGFloat)(kIs_iPhoneX?(44.0):(20.0))
/*导航栏高度*/
#define kNavBarHeight (44)
/*状态栏和导航栏总高度*/
#define kNavBarAndStatusBarHeight (CGFloat)(kIs_iPhoneX?(88.0):(64.0))
/*TabBar高度*/
#define kTabBarHeight (CGFloat)(kIs_iPhoneX?(49.0 + 34.0):(49.0))
/*顶部安全区域远离高度*/
#define kTopBarSafeHeight (CGFloat)(kIs_iPhoneX?(44.0):(0))
/*底部安全区域远离高度*/
#define kBottomSafeHeight (CGFloat)(kIs_iPhoneX?(34.0):(0))
/*iPhoneX的状态栏高度差值*/
#define kTopBarDifHeight (CGFloat)(kIs_iPhoneX?(24.0):(0))
/*导航条和Tabbar总高度*/

摘自：https://blog.csdn.net/hangapple/article/details/80906291