iOS 设备返回不同格式的设备型号，为什么? [英] iOS devices return different format device model, why?

问题描述

我使用这个方法来获取设备型号名称:

I use this method to fetch device model name:

+ (NSString *) machineModel
{
    const char *name = "hw.model";
#if TARGET_OS_IPHONE
    // .model on iOS returns internal model name (e.g. "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，当我在数千台设备上运行此代码时，我的数据库中会出现以下选项:

However, when I run this code on thousands of devices I get following options in my database:

"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

有时我有 , 分隔符，有时是 ; 有时我看不到数字:"iPhone"

Problem

Sometimes I have , separator, sometimes ; and sometimes I see no number: "iPhone"

为什么会这样?

我希望 Android 设备(5000 家不同的制造商)能做到这一点，但为什么只有 Apple 拥有的 iOS 设备

I would expect this from Android devices (5K different manufactories) but why iOS where only Apple is owner

推荐答案

@snaggs 你可以添加这个方法，它会给你正确的输出.我在方法的第一行调用了你的方法.

@snaggs you can add this method it will give you proper output. i have call your method in first line of method.

- (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;
}

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