iOS导航栏、状态栏及Tabbar高度（区分iPhone X与其他iPhone机型）

#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*/

#define kNavAndTabHeight (kNavBarAndStatusBarHeight + kTabBarHeight)