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每一种 iOS 设备型号都有对应的一个或多个硬件编码/标识符，称为 device model 或者叫 machine name

通常的做法是，先获取设备的 device model 值，再手动映射为具体的设备型号（或者直接把 device model 值传给后端，让后端去做映射，这样的好处是可以随时兼容新设备）。

完整的 device mode 数据参考 Wiki：https://www.theiphonewiki.com/wiki/Models

我们可以先获取 device model 值，记为 internalName ，然后进行对比判断，转换成具体的设备型号。实现代码如下图所示：

+ (NSString *)deviceName {struct utsname systemInfo;uname(&systemInfo);NSString *internalName = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];NSDictionary *dict = @{// iPhone@"iPhone1,1" : @"iPhone",@"iPhone1,2" : @"iPhone 3G",@"iPhone2,1" : @"iPhone 3GS",@"iPhone3,1" : @"iPhone 4",@"iPhone3,2" : @"iPhone 4",@"iPhone3,3" : @"iPhone 4",@"iPhone4,1" : @"iPhone 4S",@"iPhone5,1" : @"iPhone 5",@"iPhone5,2" : @"iPhone 5",@"iPhone5,3" : @"iPhone 5c",@"iPhone5,4" : @"iPhone 5c",@"iPhone6,1" : @"iPhone 5s",@"iPhone6,2" : @"iPhone 5s",@"iPhone7,2" : @"iPhone 6",@"iPhone7,1" : @"iPhone 6 Plus",@"iPhone8,1" : @"iPhone 6s",@"iPhone8,2" : @"iPhone 6s Plus",@"iPhone8,4" : @"iPhone SE (1st generation)",@"iPhone9,1" : @"iPhone 7",@"iPhone9,3" : @"iPhone 7",@"iPhone9,2" : @"iPhone 7 Plus",@"iPhone9,4" : @"iPhone 7 Plus",@"iPhone10,1" : @"iPhone 8",@"iPhone10,4" : @"iPhone 8",@"iPhone10,2" : @"iPhone 8 Plus",@"iPhone10,5" : @"iPhone 8 Plus",@"iPhone10,3" : @"iPhone X",@"iPhone10,6" : @"iPhone X",@"iPhone11,8" : @"iPhone XR",@"iPhone11,2" : @"iPhone XS",@"iPhone11,6" : @"iPhone XS Max",@"iPhone11,4" : @"iPhone XS Max",@"iPhone12,1" : @"iPhone 11",@"iPhone12,3" : @"iPhone 11 Pro",@"iPhone12,5" : @"iPhone 11 Pro Max",@"iPhone12,8" : @"iPhone SE (2nd generation)",@"iPhone13,1" : @"iPhone 12 mini",@"iPhone13,2" : @"iPhone 12",@"iPhone13,3" : @"iPhone 12 Pro",@"iPhone13,4" : @"iPhone 12 Pro Max",@"iPhone14,4" : @"iPhone 13 mini",@"iPhone14,5" : @"iPhone 13",@"iPhone14,2" : @"iPhone 13 Pro",@"iPhone14,3" : @"iPhone 13 Pro Max",@"iPhone14,6" : @"iPhone SE (3rd generation)",@"iPhone14,7" : @"iPhone 14",@"iPhone14,8" : @"iPhone 14 Plus",@"iPhone15,2" : @"iPhone 14 Pro",@"iPhone15,3" : @"iPhone 14 Pro Max",// iPad@"iPad1,1" : @"iPad",@"iPad2,1" : @"iPad 2",@"iPad2,2" : @"iPad 2",@"iPad2,3" : @"iPad 2",@"iPad2,4" : @"iPad 2",@"iPad3,1" : @"iPad (3rd generation)",@"iPad3,2" : @"iPad (3rd generation)",@"iPad3,3" : @"iPad (3rd generation)",@"iPad3,4" : @"iPad (4th generation)",@"iPad3,5" : @"iPad (4th generation)",@"iPad3,6" : @"iPad (4th generation)",@"iPad6,11" : @"iPad (5th generation)",@"iPad6,12" : @"iPad (5th generation)",@"iPad7,5" : @"iPad (6th generation)",@"iPad7,6" : @"iPad (6th generation)",@"iPad7,11" : @"iPad (7th generation)",@"iPad7,12" : @"iPad (7th generation)",// iPad Air@"iPad4,1" : @"iPad Air",@"iPad4,2" : @"iPad Air",@"iPad4,3" : @"iPad Air",@"iPad5,3" : @"iPad Air 2",@"iPad5,4" : @"iPad Air 2",@"iPad11,3" : @"iPad Air (3rd generation)",@"iPad11,4" : @"iPad Air (3rd generation)",// iPad Pro@"iPad6,7" : @"iPad Pro (12.9-inch)",@"iPad6,8" : @"iPad Pro (12.9-inch)",@"iPad6,3" : @"iPad Pro (9.7-inch)",@"iPad6,4" : @"iPad Pro (9.7-inch)",@"iPad7,1" : @"iPad Pro (12.9-inch) (2nd generation)",@"iPad7,2" : @"iPad Pro (12.9-inch) (2nd generation)",@"iPad7,3" : @"iPad Pro (10.5-inch)",@"iPad7,4" : @"iPad Pro (10.5-inch)",@"iPad8,1" : @"iPad Pro (11-inch)",@"iPad8,2" : @"iPad Pro (11-inch)",@"iPad8,3" : @"iPad Pro (11-inch)",@"iPad8,4" : @"iPad Pro (11-inch)",@"iPad8,5" : @"iPad Pro (12.9-inch) (3rd generation)",@"iPad8,6" : @"iPad Pro (12.9-inch) (3rd generation)",@"iPad8,7" : @"iPad Pro (12.9-inch) (3rd generation)",@"iPad8,8" : @"iPad Pro (12.9-inch) (3rd generation)",@"iPad8,9" : @"iPad Pro (11-inch) (2nd generation)",@"iPad8,10" : @"iPad Pro (11-inch) (2nd generation)",@"iPad8,11" : @"iPad Pro (12.9-inch) (4th generation)",@"iPad8,12" : @"iPad Pro (12.9-inch) (4th generation)",// iPad mini@"iPad2,5" : @"iPad mini",@"iPad2,6" : @"iPad mini",@"iPad2,7" : @"iPad mini",@"iPad4,4" : @"iPad mini 2",@"iPad4,5" : @"iPad mini 2",@"iPad4,6" : @"iPad mini 2",@"iPad4,7" : @"iPad mini 3",@"iPad4,8" : @"iPad mini 3",@"iPad4,9" : @"iPad mini 3",@"iPad5,1" : @"iPad mini 4",@"iPad5,2" : @"iPad mini 4",@"iPad11,1" : @"iPad mini (5th generation)",@"iPad11,2" : @"iPad mini (5th generation)",//other@"i386":@"iPhone Simulator",@"x86_64":@"iPhone Simulator",};NSString *model = [dict objectForKey:internalName];if (model.length == 0) {model = internalName;}return model;
}