1.這種是在較高層次獲取設備類型，返回的是 iPhone , iPod , iPad 。適合要求不高的。

NSString *deviceType = [[UIDevice currentDevice] model];

2.這是Linux中獲取設備類型的方法，主要是C語言的方法，注意引入頭文件 #include 。輸入底層獲取設備類型的方法。

#include 

- (NSString *)getDeviceVersionInfo
{
    size_t size;
    // get the length of machine name
    sysctlbyname("hw.machine", NULL, &size, NULL, 0);
    // get machine name
    char *machine = malloc(size);
    sysctlbyname("hw.machine", machine, &size, NULL, 0);
    NSString *platform = [NSString stringWithFormat:@"%s", machine];
    free(machine);
    
    return platform;
}

-(NSString *)correspondVersion
{
    NSString *correspondVersion = [self getDeviceVersionInfo];
    
    if ([correspondVersion isEqualToString:@"i386"])        return@"Simulator";
    if ([correspondVersion isEqualToString:@"x86_64"])       return @"Simulator";
    
    if ([correspondVersion isEqualToString:@"iPhone1,1"])   return@"iPhone 1";
    if ([correspondVersion isEqualToString:@"iPhone1,2"])   return@"iPhone 3";
    if ([correspondVersion isEqualToString:@"iPhone2,1"])   return@"iPhone 3S";
    if ([correspondVersion isEqualToString:@"iPhone3,1"] || [correspondVersion isEqualToString:@"iPhone3,2"])   return@"iPhone 4";
    if ([correspondVersion isEqualToString:@"iPhone4,1"])   return@"iPhone 4S";
    if ([correspondVersion isEqualToString:@"iPhone5,1"] || [correspondVersion isEqualToString:@"iPhone5,2"])   return @"iPhone 5";
    if ([correspondVersion isEqualToString:@"iPhone5,3"] || [correspondVersion isEqualToString:@"iPhone5,4"])   return @"iPhone 5C";
    if ([correspondVersion isEqualToString:@"iPhone6,1"] || [correspondVersion isEqualToString:@"iPhone6,2"])   return @"iPhone 5S";
    
    if ([correspondVersion isEqualToString:@"iPod1,1"])     return@"iPod Touch 1";
    if ([correspondVersion isEqualToString:@"iPod2,1"])     return@"iPod Touch 2";
    if ([correspondVersion isEqualToString:@"iPod3,1"])     return@"iPod Touch 3";
    if ([correspondVersion isEqualToString:@"iPod4,1"])     return@"iPod Touch 4";
    if ([correspondVersion isEqualToString:@"iPod5,1"])     return@"iPod Touch 5";
    
    if ([correspondVersion isEqualToString:@"iPad1,1"])     return@"iPad 1";
    if ([correspondVersion isEqualToString:@"iPad2,1"] || [correspondVersion isEqualToString:@"iPad2,2"] || [correspondVersion isEqualToString:@"iPad2,3"] || [correspondVersion isEqualToString:@"iPad2,4"])     return@"iPad 2";
    if ([correspondVersion isEqualToString:@"iPad2,5"] || [correspondVersion isEqualToString:@"iPad2,6"] || [correspondVersion isEqualToString:@"iPad2,7"] )      return @"iPad Mini";
    if ([correspondVersion isEqualToString:@"iPad3,1"] || [correspondVersion isEqualToString:@"iPad3,2"] || [correspondVersion isEqualToString:@"iPad3,3"] || [correspondVersion isEqualToString:@"iPad3,4"] || [correspondVersion isEqualToString:@"iPad3,5"] || [correspondVersion isEqualToString:@"iPad3,6"])      return @"iPad 3";
    
    return correspondVersion;
}

3.這是2一樣，是Linux中獲取設備類型的方法，主要是C語言的方法，注意引入頭文件 #import "sys/utsname.h" 。輸入底層獲取設備類型的方法。

#import "sys/utsname.h"

- (NSString *)getDeviceVersionInfo
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *platform = [NSString stringWithFormat:@"%s", systemInfo.machine];
    
    return platform;
}

-(NSString *)correspondVersion
{
    NSString *correspondVersion = [self getDeviceVersionInfo];
    
    if ([correspondVersion isEqualToString:@"i386"])        return@"Simulator";
    if ([correspondVersion isEqualToString:@"x86_64"])       return @"Simulator";
    
    if ([correspondVersion isEqualToString:@"iPhone1,1"])   return@"iPhone 1";
    if ([correspondVersion isEqualToString:@"iPhone1,2"])   return@"iPhone 3";
    if ([correspondVersion isEqualToString:@"iPhone2,1"])   return@"iPhone 3S";
    if ([correspondVersion isEqualToString:@"iPhone3,1"] || [correspondVersion isEqualToString:@"iPhone3,2"])   return@"iPhone 4";
    if ([correspondVersion isEqualToString:@"iPhone4,1"])   return@"iPhone 4S";
    if ([correspondVersion isEqualToString:@"iPhone5,1"] || [correspondVersion isEqualToString:@"iPhone5,2"])   return @"iPhone 5";
    if ([correspondVersion isEqualToString:@"iPhone5,3"] || [correspondVersion isEqualToString:@"iPhone5,4"])   return @"iPhone 5C";
    if ([correspondVersion isEqualToString:@"iPhone6,1"] || [correspondVersion isEqualToString:@"iPhone6,2"])   return @"iPhone 5S";
    
    if ([correspondVersion isEqualToString:@"iPod1,1"])     return@"iPod Touch 1";
    if ([correspondVersion isEqualToString:@"iPod2,1"])     return@"iPod Touch 2";
    if ([correspondVersion isEqualToString:@"iPod3,1"])     return@"iPod Touch 3";
    if ([correspondVersion isEqualToString:@"iPod4,1"])     return@"iPod Touch 4";
    if ([correspondVersion isEqualToString:@"iPod5,1"])     return@"iPod Touch 5";
    
    if ([correspondVersion isEqualToString:@"iPad1,1"])     return@"iPad 1";
    if ([correspondVersion isEqualToString:@"iPad2,1"] || [correspondVersion isEqualToString:@"iPad2,2"] || [correspondVersion isEqualToString:@"iPad2,3"] || [correspondVersion isEqualToString:@"iPad2,4"])     return@"iPad 2";
    if ([correspondVersion isEqualToString:@"iPad2,5"] || [correspondVersion isEqualToString:@"iPad2,6"] || [correspondVersion isEqualToString:@"iPad2,7"] )      return @"iPad Mini";
    if ([correspondVersion isEqualToString:@"iPad3,1"] || [correspondVersion isEqualToString:@"iPad3,2"] || [correspondVersion isEqualToString:@"iPad3,3"] || [correspondVersion isEqualToString:@"iPad3,4"] || [correspondVersion isEqualToString:@"iPad3,5"] || [correspondVersion isEqualToString:@"iPad3,6"])      return @"iPad 3";
    
    return correspondVersion;
}