7.UIDecive

UIDevice类展示了一些关键的特定于设备的属性，包括使用的iPhone ,Ipad或iPod Touch型号、设备名称、以及OS名称和版本。
他是一种一站式解决方案，用于提取出某些系统详细信息。每个方法都是一个实例方法，他们是使用UIDevice单例通过[UIDevice currentDevice]调用的。
可以通过UIDevice获取的系统信息包括下面的这些项。

• 1.systemName:它用于返回当前使用的操作系统的名称。对于目前这一代IOS设备，在平台上只运行一种OS:iPhone OS.
• 2.systemVersion:这个值将列出单元上目前安装的固定版本。
• 3.model:iPhone 型号返回一个描述其平台的字符串，既iPhone、iPad和iPod Touch.如果将IOS扩展到新设备上，将使用额外的字符串描述这些型号。localizedModel提供了该属性的本地化版本。
• 4.userInterfaceIdiom:这个属性表示当前设备上使用的界面风格，既iPhone或iPad.当Apple提供另外的平台风格时，可能会引入其他的用语。
• 5.name:这个字符串由用户指定的iPhone名称，这个名称也用于创建设备的本地主机名。

UIDevice *device = [UIDevice currentDevice];
NSLog(@"systemName :%@",device.systemName);
NSLog(@"systemVersion :%@",device.systemVersion);
NSLog(@"model :%@",device.model);
NSLog(@"localizedModel:%@",device.localizedModel);
NSLog(@"userInterfaceIdiom:%d",device.userInterfaceIdiom);
NSLog(@"name:%@",device.name);

输出:
systemName :iPhone OS
systemVersion :8.1.2
model :iPhone
localizedModel:iPhone
userInterfaceIdiom:0
name:“xxxx”的 iPhone

主要用法：获取设备唯一标识

思路：通过keychain缓存，没有的话生成一串随机值。

UIDevice (Extention)
- (NSString *)zl_deviceId {
    static NSString *deviceId;
    static dispatch_once_t onceToken;

    dispatch_once(&onceToken, ^{
        deviceId = [KeychainWrapper keychainStringFromMatchingIdentifier:@"zl_deviceId"];

        if (!deviceId) {
            deviceId = [[self identifierForVendor] UUIDString];

            if (deviceId) {
                [KeychainWrapper createKeychainValue:deviceId forIdentifier:@"zl_deviceId"];
            } else {
                NSAssert(0, @"Device ID not found");
                deviceId = [self randomDeviceId];
            }
        }
    });
    return deviceId;
}

- (void)removeKeychainDeviceId {
    [KeychainWrapper deleteItemFromKeychainWithIdentifier:@"zl_deviceId"];
}

- (NSString *)randomDeviceId {
    生成一个随机字符串
    return uniqueId;
}

一个专门生产32位的uuid的包

主要用法：

#import <UIKit/UIKit.h>

@interface UIDevice (Extention)

/// 平台类型
+ (NSString *)platform;
/// 平台字符串
+ (NSString *)platformString;
/// 系统的版本号
+ (NSString *)systemVersion;
/// mac地址
+ (NSString *)macAddress;
/// 获取手机屏幕分辨率
+ (NSString *)screenPixel;
///获取机型字符串
+ (NSString*)deviceString;
/// CPU数目
+ (NSUInteger)cpuNumber;
/// CPU频率
+ (NSUInteger)cpuFrequency;
///指令集
+ (NSString *)instructionSetModelString;
/// 总线频率
+ (NSUInteger)busFrequency;
/// 内存大小
+ (NSUInteger)ramSize;
/// 获取手机内存总量, 返回的是字节数
+ (long long)totalMemoryBytes;
/// 获取手机可用内存, 返回的是字节数
+ (NSUInteger)freeMemoryBytes;
/// 获取手机硬盘空闲空间, 返回的是字节数
+ (long long)freeDiskSpaceBytes;
/// 获取手机硬盘总空间, 返回的是字节数
+ (long long)totalDiskSpaceBytes;
/// 判断当前系统是否有摄像头
+ (BOOL)hasCamera;
///判断手机是否越狱（方法待完善）
+ (BOOL)isJailBreak;
///获取设备时间
+ (uint64_t)tickCount;
///电池电量
+ (CGFloat)getBatteryQuantity;
//是否在充电
+ (BOOL)isCharging;
///SIM卡信息
+ (NSDictionary *)simCardInfo;
//当前wifi的SSID
+ (NSString *)currentWifiSSID;
///是否为分型模式
+ (BOOL)isFlightMode;

@end

@implementation UIDevice (Extention)

+ (NSString *)platform
{
    size_t size;
    sysctlbyname("hw.machine", NULL, &size, NULL, 0);
    char *machine = malloc(size);
    sysctlbyname("hw.machine", machine, &size, NULL, 0);
    NSString *platform = [NSString stringWithUTF8String:machine];
    free(machine);
    return platform;
}

+ (NSString *)platformString{
    NSString *platform = [self platform];
    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 (CDMA)";
    if ([platform isEqualToString:@"iPhone5,3"])    return @"iPhone 5c";
    if ([platform isEqualToString:@"iPhone5,4"])    return @"iPhone 5c";
    if ([platform isEqualToString:@"iPhone6,1"])    return @"iPhone 5s";
    if ([platform isEqualToString:@"iPhone6,2"])    return @"iPhone 5s";
    if ([platform isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([platform isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([platform isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
    if ([platform isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
    if ([platform isEqualToString:@"iPhone8,4"])    return @"iPhone SE";
    if ([platform isEqualToString:@"iPhone9,1"])    return @"iPhone 7";
    if ([platform isEqualToString:@"iPhone9,2"])    return @"iPhone 7 Plus";
    if ([platform isEqualToString:@"iPhone9,3"])    return @"iPhone 7";
    if ([platform isEqualToString:@"iPhone9,4"])    return @"iPhone 7 Plus";
    if ([platform isEqualToString:@"iPhone10,1"])   return @"iPhone 8";
    if ([platform isEqualToString:@"iPhone10,2"])   return @"iPhone 8 Plus";
    if ([platform isEqualToString:@"iPhone10,3"])   return @"iPhone X";
    if ([platform isEqualToString:@"iPhone10,4"])   return @"iPhone 8";
    if ([platform isEqualToString:@"iPhone10,5"])   return @"iPhone 8 Plus";
    if ([platform isEqualToString:@"iPhone10,6"])   return @"iPhone X";
    if ([platform isEqualToString:@"iPhone11,2"])   return @"iPhone XS";
    if ([platform isEqualToString:@"iPhone11,4"])   return @"iPhone XS MAX";
    if ([platform isEqualToString:@"iPhone11,8"])   return @"iPhone XR";
    
    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:@"iPod7,1"])      return @"iPod Touch 6G";
    
    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 (CDMA)";
    if ([platform isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
    if ([platform isEqualToString:@"iPad3,2"])      return @"iPad 3 (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 (CDMA)";
    if ([platform isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
    if ([platform isEqualToString:@"iPad4,2"])      return @"iPad Air (GSM)";
    if ([platform isEqualToString:@"iPad4,3"])      return @"iPad Air (CDMA)";
    if ([platform isEqualToString:@"iPad4,4"])      return @"iPad Mini Retina (WiFi)";
    if ([platform isEqualToString:@"iPad4,5"])      return @"iPad Mini Retina (Cellular)";
    if ([platform isEqualToString:@"iPad4,7"])      return @"iPad Mini 3 (WiFi)";
    if ([platform isEqualToString:@"iPad4,8"])      return @"iPad Mini 3 (Cellular)";
    if ([platform isEqualToString:@"iPad4,9"])      return @"iPad Mini 3 (Cellular)";
    if ([platform isEqualToString:@"iPad5,1"])      return @"iPad Mini 4 (WiFi)";
    if ([platform isEqualToString:@"iPad5,2"])      return @"iPad Mini 4 (Cellular)";
    if ([platform isEqualToString:@"iPad5,3"])      return @"iPad Air 2 (WiFi)";
    if ([platform isEqualToString:@"iPad5,4"])      return @"iPad Air 2 (Cellular)";
    if ([platform isEqualToString:@"iPad6,3"])      return @"iPad Pro 9.7-inch (WiFi)";
    if ([platform isEqualToString:@"iPad6,4"])      return @"iPad Pro 9.7-inch (Cellular)";
    if ([platform isEqualToString:@"iPad6,7"])      return @"iPad Pro 12.9-inch (WiFi)";
    if ([platform isEqualToString:@"iPad6,8"])      return @"iPad Pro 12.9-inch (Cellular)";
    if ([platform isEqualToString:@"iPad6,11"])     return @"iPad 5 (WiFi)";
    if ([platform isEqualToString:@"iPad6,12"])     return @"iPad 5 (Cellular)";
    if ([platform isEqualToString:@"iPad7,1"])      return @"iPad Pro 12.9-inch 2 (WiFi)";
    if ([platform isEqualToString:@"iPad7,2"])      return @"iPad Pro 12.9-inch 2 (Cellular)";
    if ([platform isEqualToString:@"iPad7,3"])      return @"iPad Pro 10.5-inch (WiFi)";
    if ([platform isEqualToString:@"iPad7,4"])      return @"iPad Pro 10.5-inch (Cellular)";
    if ([platform isEqualToString:@"iPad7,5"])      return @"iPad 6 (WiFi)";
    if ([platform isEqualToString:@"iPad7,6"])      return @"iPad 6 (Cellular)";
    
    if ([platform isEqualToString:@"i386"])         return [UIDevice currentDevice].model;
    if ([platform isEqualToString:@"x86_64"])       return [UIDevice currentDevice].model;
    
    return platform;
}
//指令集模式
+ (NSString *)instructionSetModelString{
    NSString *platform = [self platform];
    
    NSArray *armV6Array = @[@"iPhone1,1",
                            @"iPhone1,2",
                            @"iPod1,1",
                            @"iPod2,1"];
    NSArray *armV7Array = @[@"iPhone2,1",
                            @"iPhone3,1",
                            @"iPhone3,3",
                            @"iPhone4,1",
                            @"iPod3,1",
                            @"iPod4,1",
                            @"iPod5,1",
                            @"iPad1,1",
                            @"iPad2,1",
                            @"iPad2,2",
                            @"iPad2,3",
                            @"iPad2,4",
                            @"iPad2,5",
                            @"iPad2,6",
                            @"iPad2,7",
                            @"iPad3,1",
                            @"iPad3,2",
                            @"iPad3,3"];
    NSArray *armV7sArray = @[@"iPhone5,1",
                             @"iPhone5,2",
                             @"iPhone5,3",
                             @"iPhone5,4",
                             @"iPod7,1",
                             @"iPad3,4",
                             @"iPad3,5",
                             @"iPad3,6"];
    NSArray *armV8Array = @[@"iPhone6,1",
                            @"iPhone6,2",
                            @"iPhone7,1",
                            @"iPhone7,2",
                            @"iPhone8,1",
                            @"iPhone8,2",
                            @"iPhone8,4",
                            @"iPhone9,1",
                            @"iPhone9,2",
                            @"iPhone9,3",
                            @"iPhone9,4",
                            @"iPhone10,1",
                            @"iPhone10,2",
                            @"iPhone10,3",
                            @"iPhone10,4",
                            @"iPhone10,5",
                            @"iPhone10,6",
                            @"iPhone11,2",
                            @"iPhone11,4",
                            @"iPhone11,8",
                            @"iPad4,1",
                            @"iPad4,2",
                            @"iPad4,3",
                            @"iPad4,4",
                            @"iPad4,5",
                            @"iPad4,7",
                            @"iPad4,8",
                            @"iPad4,9",
                            @"iPad5,1",
                            @"iPad5,2",
                            @"iPad5,3",
                            @"iPad5,4",
                            @"iPad6,3",
                            @"iPad6,4",
                            @"iPad6,7",
                            @"iPad6,8",
                            @"iPad6,11",
                            @"iPad6,12",
                            @"iPad7,1",
                            @"iPad7,2",
                            @"iPad7,3",
                            @"iPad7,4",
                            @"iPad7,5",
                            @"iPad7,6"
                            ];
    if ([armV6Array containsObject:platform]) {
        return @"ARMV6";
    } else if([armV7Array containsObject:platform]) {
        return @"ARMV7";
    } else if ([armV7sArray containsObject:platform]){
        return @"ARMV7s";
    } else if([armV8Array containsObject:platform]) {
        return @"ARM64";
    }
    return nil;
}

// 获取手机屏幕分辨率
+ (NSString *)screenPixel
{
    return [NSString stringWithFormat:@"%dx%d", (int)[[UIScreen mainScreen] currentMode].size.width, (int)[[UIScreen mainScreen] currentMode].size.height];
}

+ (NSString *)macAddress
{
    int                 mib[6];
    size_t              len;
    char                *buf;
    unsigned char       *ptr;
    struct if_msghdr    *ifm;
    struct sockaddr_dl  *sdl;
    
    mib[0] = CTL_NET;
    mib[1] = AF_ROUTE;
    mib[2] = 0;
    mib[3] = AF_LINK;
    mib[4] = NET_RT_IFLIST;
    
    if((mib[5] = if_nametoindex("en0")) == 0) {
        printf("Error: if_nametoindex error\n");
        return NULL;
    }
    
    if(sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 1\n");
        return NULL;
    }
    
    if((buf = malloc(len)) == NULL) {
        printf("Could not allocate memory. Rrror!\n");
        return NULL;
    }
    
    if(sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 2");
        return NULL;
    }
    
    ifm = (struct if_msghdr *)buf;
    sdl = (struct sockaddr_dl *)(ifm + 1);
    ptr = (unsigned char *)LLADDR(sdl);
    NSString *outstring = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",
                           *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    free(buf);
    
    return outstring;
}

///获取机型字符串
+ (NSString*)deviceString {
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    return deviceString;
}

+ (NSString *)systemVersion
{
    return [[UIDevice currentDevice] systemVersion];
}

+ (BOOL)hasCamera
{
    return [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
}

+ (NSUInteger)getSysInfo:(uint)typeSpecifier
{
    size_t size = sizeof(int);
    int result;
    int mib[2] = {CTL_HW, typeSpecifier};
    sysctl(mib, 2, &result, &size, NULL, 0);
    return (NSUInteger)result;
}


+ (NSUInteger)cpuFrequency
{
    return [self getSysInfo:HW_CPU_FREQ];
}

+ (NSUInteger)busFrequency
{
    return [self getSysInfo:HW_BUS_FREQ];
}

+ (NSUInteger)ramSize
{
    return [self getSysInfo:HW_MEMSIZE];
}

+ (NSUInteger)cpuNumber
{
    return [self getSysInfo:HW_NCPU];
}

+ (CGFloat)getBatteryQuantity
{
    [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
    return [[UIDevice currentDevice] batteryLevel];
}

+ (BOOL)isCharging {
    [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
    return [[UIDevice currentDevice] batteryState] == UIDeviceBatteryStateCharging;
}

+ (NSDictionary *)simCardInfo {
    CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
    
    CTCarrier *carrier = [info subscriberCellularProvider];
    NSMutableDictionary *simInfo = [NSMutableDictionary dictionaryWithCapacity:0];
    NSString *carrierName = carrier.carrierName;
    NSString *mobileCountryCode = carrier.mobileCountryCode;
    NSString *mobileNetworkCode = carrier.mobileNetworkCode;
    BOOL allowsVOIP = carrier.allowsVOIP;
    if (carrierName.length > 0) {
        [simInfo setValue:carrierName forKey:@"carrierName"];
    }
    if (mobileCountryCode.length > 0) {
        [simInfo setValue:mobileCountryCode forKey:@"mobileCountryCode"];
    }
    if (mobileNetworkCode.length > 0) {
        [simInfo setValue:mobileNetworkCode forKey:@"mobileNetworkCode"];
    }
    [simInfo setValue:@(allowsVOIP).stringValue forKey:@"mobileCountryCode"];
    return simInfo;
}

+ (BOOL)isFlightMode {
    CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
    return  info.currentRadioAccessTechnology == nil;
}

+ (NSString *)currentWifiSSID
{
    // Does not work on the simulator.
    NSString *ssid = nil;
    NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();
    for (NSString *ifnam in ifs) {
        NSDictionary *info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);
        if (info[@"SSID"]) {
            ssid = info[@"SSID"];
        }
    }
    return ssid;
}

#pragma mark - # 内存信息
+ (long long)totalMemoryBytes
{
    return [NSProcessInfo processInfo].physicalMemory;
//    return [self getSysInfo:HW_PHYSMEM];
}

+ (NSUInteger)freeMemoryBytes
{
    mach_port_t host_port = mach_host_self();
    mach_msg_type_number_t host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t pagesize;
    vm_statistics_data_t vm_stat;
    
    host_page_size(host_port, &pagesize);
    if (host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size) != KERN_SUCCESS) {
        return 0;
    }
    unsigned long mem_free = vm_stat.free_count * pagesize;
    return mem_free;
}

#pragma mark - # 硬盘信息
+ (long long)freeDiskSpaceBytes
{
    struct statfs buf;
    long long freespace;
    freespace = 0;
    if ( statfs("/private/var", &buf) >= 0 ) {
        freespace = (long long)buf.f_bsize * buf.f_bfree;
    }
    return freespace;
}

+ (long long)totalDiskSpaceBytes
{
    struct statfs buf;
    long long totalspace;
    totalspace = 0;
    if ( statfs("/private/var", &buf) >= 0 ) {
        totalspace = (long long)buf.f_bsize * buf.f_blocks;
    }
    return totalspace;
}

#pragma mark - 越狱
+ (BOOL)isJailBreak
{
    for (int i = 0; i < sizeof(zz_jailbreak_tool_pathes) / sizeof(char*); i++) {
        if ([[NSFileManager defaultManager] fileExistsAtPath:[NSString stringWithUTF8String:zz_jailbreak_tool_pathes[i]]]) {
            NSLog(@"The device is jail broken!");
            return YES;
        }
    }
    
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"cydia://"]]) {
        NSLog(@"The device is jail broken!");
        return YES;
    }
    
    NSLog(@"The device is NOT jail broken!");
    
    return NO;
}

#pragma mark -

+ (uint64_t)tickCount
{
    static mach_timebase_info_data_t sTimebaseInfo;
    uint64_t machTime = mach_absolute_time();
    
    // Convert to nanoseconds - if this is the first time we've run, get the timebase.
    if (sTimebaseInfo.denom == 0 )
    {
        (void) mach_timebase_info(&sTimebaseInfo);
    }
    // Convert the mach time to milliseconds
    uint64_t millis = ((machTime / 1000000) * sTimebaseInfo.numer) / sTimebaseInfo.denom;
    return millis;
}

@end