IOS 硬件型号的获取

//获得设备型号 + (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 (A1203)";     if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G (A1241/A1324)";     if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS (A1303/A1325)";     if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4 (A1332)";     if ([platform isEqualToString:@"iPhone3,2"]) return @"iPhone 4 (A1332)";     if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4 (A1349)";     if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4S (A1387/A1431)";     if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5 (A1428)";     if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5 (A1429/A1442)";     if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c (A1456/A1532)";     if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c (A1507/A1516/A1526/A1529)";     if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s (A1453/A1533)";     if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s (A1457/A1518/A1528/A1530)";     if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus (A1522/A1524)";     if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6 (A1549/A1586)";           if ([platform isEqualToString:@"iPod1,1"])   return @"iPod Touch 1G (A1213)";     if ([platform isEqualToString:@"iPod2,1"])   return @"iPod Touch 2G (A1288)";     if ([platform isEqualToString:@"iPod3,1"])   return @"iPod Touch 3G (A1318)";     if ([platform isEqualToString:@"iPod4,1"])   return @"iPod Touch 4G (A1367)";     if ([platform isEqualToString:@"iPod5,1"])   return @"iPod Touch 5G (A1421/A1509)";           if ([platform isEqualToString:@"iPad1,1"])   return @"iPad 1G (A1219/A1337)";           if ([platform isEqualToString:@"iPad2,1"])   return @"iPad 2 (A1395)";     if ([platform isEqualToString:@"iPad2,2"])   return @"iPad 2 (A1396)";     if ([platform isEqualToString:@"iPad2,3"])   return @"iPad 2 (A1397)";     if ([platform isEqualToString:@"iPad2,4"])   return @"iPad 2 (A1395+New Chip)";     if ([platform isEqualToString:@"iPad2,5"])   return @"iPad Mini 1G (A1432)";     if ([platform isEqualToString:@"iPad2,6"])   return @"iPad Mini 1G (A1454)";     if ([platform isEqualToString:@"iPad2,7"])   return @"iPad Mini 1G (A1455)";           if ([platform isEqualToString:@"iPad3,1"])   return @"iPad 3 (A1416)";     if ([platform isEqualToString:@"iPad3,2"])   return @"iPad 3 (A1403)";     if ([platform isEqualToString:@"iPad3,3"])   return @"iPad 3 (A1430)";     if ([platform isEqualToString:@"iPad3,4"])   return @"iPad 4 (A1458)";     if ([platform isEqualToString:@"iPad3,5"])   return @"iPad 4 (A1459)";     if ([platform isEqualToString:@"iPad3,6"])   return @"iPad 4 (A1460)";           if ([platform isEqualToString:@"iPad4,1"])   return @"iPad Air (A1474)";     if ([platform isEqualToString:@"iPad4,2"])   return @"iPad Air (A1475)";     if ([platform isEqualToString:@"iPad4,3"])   return @"iPad Air (A1476)";     if ([platform isEqualToString:@"iPad4,4"])   return @"iPad Mini 2G (A1489)";     if ([platform isEqualToString:@"iPad4,5"])   return @"iPad Mini 2G (A1490)";     if ([platform isEqualToString:@"iPad4,6"])   return @"iPad Mini 2G (A1491)";           if ([platform isEqualToString:@"i386"])      return @"iPhone Simulator";     if ([platform isEqualToString:@"x86_64"])    return @"iPhone Simulator";     return platform; }