IOS 获取设备型号

+ (NSString *)getCurrentDeviceModel:(UIViewController *)controller{    int mib[2];    size_t len;    char *machine;    mib[0] = CTL_HW;    mib[1] = HW_MACHINE;    sysctl(mib, 2, NULL, &len, NULL, 0);    machine = malloc(len);    sysctl(mib, 2, machine, &len, NULL, 0);    NSString *platform = [NSString stringWithCString:machine encoding:NSASCIIStringEncoding];    free(machine);    if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 2G";    if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";    if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";    if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4";    if ([platform isEqualToString:@"iPhone3,2"]) return @"iPhone 4";    if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4";    if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";    if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5";    if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5";    if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c";    if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c";    if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s";    if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s";    if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";    if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6";    if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6S";    if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6S Plus";    if ([platform isEqualToString:@"iPhone8,4"]) {        return @"iPhone se";    }    if ([platform isEqualToString:@"iPhone9,1"]) return @"iPhone 7 A1660";    if ([platform isEqualToString:@"iPhone9,2"]) return @"iPhone 7 Plus A1661";    if ([platform isEqualToString:@"iPhone9,3"]) return @"iPhone 7 A1778";    if ([platform isEqualToString:@"iPhone9,4"]) return @"iPhone 7 Plus A1784";    if ([platform isEqualToString:@"iPod1,1"])   return @"iPod Touch 1G";    if ([platform isEqualToString:@"iPod2,1"])   return @"iPod Touch 2G";    if ([platform isEqualToString:@"iPod3,1"])   return @"iPod Touch 3G";    if ([platform isEqualToString:@"iPod4,1"])   return @"iPod Touch 4G";    if ([platform isEqualToString:@"iPod5,1"])   return @"iPod Touch 5G";    if ([platform isEqualToString:@"iPad1,1"])   return @"iPad 1G";    if ([platform isEqualToString:@"iPad2,1"])   return @"iPad 2";    if ([platform isEqualToString:@"iPad2,2"])   return @"iPad 2";    if ([platform isEqualToString:@"iPad2,3"])   return @"iPad 2";    if ([platform isEqualToString:@"iPad2,4"])   return @"iPad 2";    if ([platform isEqualToString:@"iPad2,5"])   return @"iPad Mini 1G";    if ([platform isEqualToString:@"iPad2,6"])   return @"iPad Mini 1G";    if ([platform isEqualToString:@"iPad2,7"])   return @"iPad Mini 1G";    if ([platform isEqualToString:@"iPad3,1"])   return @"iPad 3";    if ([platform isEqualToString:@"iPad3,2"])   return @"iPad 3";    if ([platform isEqualToString:@"iPad3,3"])   return @"iPad 3";    if ([platform isEqualToString:@"iPad3,4"])   return @"iPad 4";    if ([platform isEqualToString:@"iPad3,5"])   return @"iPad 4";    if ([platform isEqualToString:@"iPad3,6"])   return @"iPad 4";    if ([platform isEqualToString:@"iPad4,1"])   return @"iPad Air";    if ([platform isEqualToString:@"iPad4,2"])   return @"iPad Air";    if ([platform isEqualToString:@"iPad4,3"])   return @"iPad Air";    if ([platform isEqualToString:@"iPad4,4"])   return @"iPad Mini 2G ";    if ([platform isEqualToString:@"iPad4,5"])   return @"iPad Mini 2G ";    if ([platform isEqualToString:@"iPad4,6"])   return @"iPad Mini 2G ";    if ([platform isEqualToString:@"iPad4,7"])   return @"iPad Mini 3 ";    if ([platform isEqualToString:@"iPad4,8"])   return @"iPad Mini 3 ";    if ([platform isEqualToString:@"iPad4,9"])   return @"iPad Mini 3 ";    if ([platform isEqualToString:@"iPad5,1"])   return @"iPad Mini 4 WiFi  ";    if ([platform isEqualToString:@"iPad5,2"])   return @"iPad Mini 4 WiFi+Cellular ";    if ([platform isEqualToString:@"iPad5,3"])   return @"iPad Air2 ";    if ([platform isEqualToString:@"iPad5,4"])   return @"iPad Air2 ";    if ([platform isEqualToString:@"iPad6,7"])   return @"iPad Pro WiFi 12.7-inch";    if ([platform isEqualToString:@"iPad6,8"])   return @"iPad Pro WiFi+Cellular 12.7-inch";    if ([platform isEqualToString:@"iPad6,3"])   return @"iPad Pro WiFi 9.7-inch";    if ([platform isEqualToString:@"iPad6,4"])   return @"iPad Pro WiFi+Cellular 9.7-inch";    if ([platform isEqualToString:@"i386"])      return @"iPhone Simulator";    if ([platform isEqualToString:@"x86_64"])    return @"iPhone Simulator";    return platform;}