iOS 设备屏幕信息iphoneX=Xs=11ProiphoneXr=11=XsMax=11ProMax(像素密度不一样

iphone X = Xs = 11 Pro
iphone Xr = 11 = Xs Max = 11 Pro Max (像素密度不一样，逻辑点一样)
根据屏幕逻辑像素点判断机型

let kIS_IPHONE_3_5_INCH = kSCREEN_WIDTH == 320.0 && kSCREEN_HEIGHT == 480.0 // 4/4S
let kIS_IPHONE_4_0_INCH = kSCREEN_WIDTH == 320.0 && kSCREEN_HEIGHT == 568.0 // 5/5C/5S/SE
let kIS_IPHONE_4_7_INCH = kSCREEN_WIDTH == 375.0 && kSCREEN_HEIGHT == 667.0 // 6/6S/7/8
let kIS_IPHONE_5_5_INCH = kSCREEN_WIDTH == 414.0 && kSCREEN_HEIGHT == 736.0 // 6P/6SP/7P/8P
let kIS_IPHONE_5_15_INCH = kSCREEN_WIDTH == 375.0 && kSCREEN_HEIGHT == 812.0 // X/XS/11Pro
let kIS_IPHONE_6_1_INCH = kSCREEN_WIDTH == 414.0 && kSCREEN_HEIGHT == 896.0 // XR/XSMax/11/11ProMax

let kIS_FULL_SCREEN = kSCREEN_HEIGHT > 750.0

各机型具体的屏幕信息

手机型号	尺寸（对角线）	物理点	宽长比例	像素点	倍数	状态栏高度	底部安全距离	导航栏高度	tabbar高度
4/4S	3.5英寸	320x480	0.667	640x960	@2x	20	-	44	49
5/5S/5C	4英寸	320x568	0.563	640x1136	@2x	20	-	44	49
SE	4英寸	320x568	0.563	640x1136	@2x	20	-	44	49
6	4.7英寸	375x667	0.562	750x1334	@2x	20	-	44	49
6 Plus	5.5英寸	414x736	0.563	1242x2208	@3x	20	-	44	49
6S	4.7英寸	375x667	0.562	750x1334	@2x	20	-	44	49
6S Plus	5.5英寸	414x736	0.563	1242x2208	@3x	20	-	44	49
7	4.7英寸	375x667	0.562	750x1334	@2x	20	-	44	49
7 Plus	5.5英寸	414x736	0.563	1242x2208	@3x	20	-	44	49
8	4.7英寸	375x667	0.562	750x1334	@2x	20	-	44	49
8 Plus	5.5英寸	414x736	0.563	1242x2208	@3x	20	-	44	49
X	5.8英寸	375x812	0.462	1125x2436	@3x	44	34	44	83
XS	5.8英寸	375x812	0.462	1125x2436	@3x	44	34	44	83
XS Max	6.5英寸	414x896	0.462	1242x2688	@3x	44	34	44	83
XR	6.1英寸	414x896	0.462	828x1792	@2x	44	34	44	83
11	6.1英寸	414x896	0.462	828x1792	@2x	44	34	44	83
11 Pro	5.8英寸	375x812	0.462	1125x2436	@3x	44	34	44	83
11 Pro Max	6.5英寸	414x896	0.462	1242x2688	@3x	44	34	44	83