开发中有的时候查看设计统计数据，或者通过日志查看错误信息，这个时候我们就需要获取获取设备信息，看下关于设备有几种方法:
NSLog(@"%@",[[UIDevice currentDevice] name]);//设备名称
NSLog(@"%@",[[UIDevice currentDevice] model]);//设备类型
NSLog(@"%@",[[UIDevice currentDevice] localizedModel]);
NSLog(@"%@",[[UIDevice currentDevice] systemName]);//系统名称
NSLog(@"%@",[[UIDevice currentDevice] systemVersion]);//系统版本
这个并不能满足我们的需求，我们需要获取具体的设备型号，iPhone4还是iPhone6s，32G还是64G的，我们就需要自己扩张UIDevice，实战之前我们需要看一下维基百科的文档：https://www.theiphonewiki.com/wiki/Models；
+ (NSString *)devicePlatForm{
struct utsname systemInfo;
uname(&systemInfo);
NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
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)";
//http://www.cnblogs.com/xiaofeixiang/
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;
}
参数信息可以通过维基百科来添加，如果单纯只是判断iPhone几代也可以通过屏幕分辨率确认~
GitHub项目地址:https://github.com/SmallElephant/FEDevice~