iOS设备返回不同格式的设备型号，为什么？

我用这个方法来获取设备型号名称：

+ (NSString *) machineModel { const char *name = "hw.model"; #if TARGET_OS_IPHONE // .model on iOS returns internal model name (eg "N51AP") when we'd prefer to see the model identifier here ("iPhone6,1") name = "hw.machine"; #endif int error = 0; size_t length = 0; error = sysctlbyname(name, NULL, &length, NULL, 0); if (error != 0) { return nil; } char *p = malloc(sizeof(char) * length); if (p) { error = sysctlbyname(name, p, &length, NULL, 0); } if (error != 0) { free(p); return nil; } NSString *machinemodel = [NSString stringWithFormat:@"%s", p]; free(p); return machinemodel; } 

但是，当我在数以千计的设备上运行此代码时，我在数据库中得到以下选项：

 "iPhone7;1" "iPhone8,1" "iPhone7;2" "iPhone" "iPhone9;3" "iPhone7;1" "iPhone8,1" "iPhone8,1" "iPhone7,2" "iPhone7;2" "iPhone9;1" "iPhone7;2" ... 

问题

有时候我有,分隔符; 有时我看不到数字： "iPhone"

为什么会发生？

---

我期望从Android设备（5K不同的制造商），但为什么只有苹果是所有者的iOS

Answer 1

我相信你有一个代码问题，直接访问模型名称。 可能在某些iOS版本或iOS架构上，它的工作方式不同。

我build议你使用一些更高级别的库，比如DeviceKit或者Device–它对我来说效果超好，并且总是给出正确的结果。

如果你不想直接使用它们，至less你可以看到它们是如何工作的，并且自己实现相同的逻辑。

Answer 2

@snaggs你可以添加这个方法，它会给你适当的输出。 我已经在第一行的方法中调用了你的方法。

 - (NSString *)platformString { NSString *platform = [self machineModel]; if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 1G"; if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G"; if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS"; if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4 (GSM)"; if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4 (CDMA)"; if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4S"; if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5 (GSM)"; if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5 (GSM+CDMA)"; if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c (GSM)"; if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c (GSM+CDMA)"; if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s (GSM)"; if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s (GSM+CDMA)"; if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 GSM"; if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6 GSM+CDMA"; if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6+ GSM"; if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6+ Global"; 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"; if ([platform isEqualToString:@"iPad2,1"]) return @"iPad 2 (WiFi)"; if ([platform isEqualToString:@"iPad2,2"]) return @"iPad 2 (GSM)"; if ([platform isEqualToString:@"iPad2,3"]) return @"iPad 2 (CDMA)"; if ([platform isEqualToString:@"iPad2,4"]) return @"iPad 2 (WiFi)"; if ([platform isEqualToString:@"iPad2,5"]) return @"iPad Mini (WiFi)"; if ([platform isEqualToString:@"iPad2,6"]) return @"iPad Mini (GSM)"; if ([platform isEqualToString:@"iPad2,7"]) return @"iPad Mini (GSM+CDMA)"; if ([platform isEqualToString:@"iPad3,1"]) return @"iPad 3 (WiFi)"; if ([platform isEqualToString:@"iPad3,2"]) return @"iPad 3 (GSM+CDMA)"; if ([platform isEqualToString:@"iPad3,3"]) return @"iPad 3 (GSM)"; if ([platform isEqualToString:@"iPad3,4"]) return @"iPad 4 (WiFi)"; if ([platform isEqualToString:@"iPad3,5"]) return @"iPad 4 (GSM)"; if ([platform isEqualToString:@"iPad3,6"]) return @"iPad 4 (GSM+CDMA)"; if ([platform isEqualToString:@"iPad4,1"]) return @"iPad Air (WiFi)"; if ([platform isEqualToString:@"iPad4,2"]) return @"iPad Air (GSM)"; if ([platform isEqualToString:@"iPad4,4"]) return @"iPad Mini Retina (WiFi)"; if ([platform isEqualToString:@"iPad4,5"]) return @"iPad Mini Retina (GSM)"; if ([platform isEqualToString:@"i386"]) return @"Simulator"; if ([platform isEqualToString:@"x86_64"]) return @"Simulator"; return platform; } 

Answer 3

有了这些知识，我们终于可以通过使用sysctl来获得用于iOS系统的OS X和HW_MACHINE的HW_MODEL来获得“硬件模型”的值。

在iOS中，您应该使用hw.machine而不是hw.model

 size_t size; int nR = sysctlbyname("hw.machine", NULL, &size, NULL, 0); char *machine = (char *)malloc(size); nR = sysctlbyname("hw.machine", machine, &size, NULL, 0); NSString *deviceString = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding]; free(machine); 

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