[置顶] iOS开发～设备信息

参考了很多帖子，最后根据项目需求，修正了一些错误，总结了一个相对更全面一些的公用模块：

#import <UIKit/UIKit.h>

@interface UIDevice (Info)

+ (NSString *) device;               //设备类型(x86_64 iPod5,1)
+ (NSString *) deviceModel;          //设备模式(iPad iPod iPhone)
+ (NSString *) osVersion;            //系统版本
+ (NSString *) os;                   //平台
+ (NSString *) carrier;              //运营商
+ (NSString *) resolution;           //分辨率
+ (NSString *) locale;               //地域
+ (NSString *) appVersion;           //程序版本
+ (NSNumber *) timestamp;            //unix timestamp
+ (NSString *) cpuType;              //cpu型号
+ (NSString *) cpuFrequency;         //cpu频率
+ (NSUInteger) cpuCount;             //cpu核数
+ (NSArray  *) cpuUsage;             //cpu利用率
+ (NSUInteger) totalMemoryBytes;     //获取手机内存总量,返回的是字节数
+ (NSUInteger) freeMemoryBytes;      //获取手机可用内存,返回的是字节数
+ (long  long) freeDiskSpaceBytes;   //获取手机硬盘空闲空间,返回的是字节数
+ (long  long) totalDiskSpaceBytes;  //获取手机硬盘总空间,返回的是字节数
+ (BOOL      ) isJailBreak;          //是否越狱
+ (BOOL      ) bluetoothCheck;       //是否支持蓝牙

@end

#import "UIDevice+Info.h"
#import <CoreTelephony/CTTelephonyNetworkInfo.h>
#import <CoreTelephony/CTCarrier.h>
#import <mach/mach.h>
#import <mach/mach_host.h>
#import <sys/types.h>
#import <sys/param.h>
#import <sys/mount.h>
#import <mach/processor_info.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/stat.h>
#include <net/if.h>
#include <net/if_dl.h>



#define IFPGA_NAMESTRING                @"iFPGA"

#define IPHONE_1G_NAMESTRING            @"iPhone 1G"
#define IPHONE_3G_NAMESTRING            @"iPhone 3G"
#define IPHONE_3GS_NAMESTRING           @"iPhone 3GS"
#define IPHONE_4_NAMESTRING             @"iPhone 4"
#define IPHONE_4S_NAMESTRING            @"iPhone 4S"
#define IPHONE_5_NAMESTRING             @"iPhone 5"
#define IPHONE_UNKNOWN_NAMESTRING       @"Unknown iPhone"

#define IPOD_1G_NAMESTRING              @"iPod touch 1G"
#define IPOD_2G_NAMESTRING              @"iPod touch 2G"
#define IPOD_3G_NAMESTRING              @"iPod touch 3G"
#define IPOD_4G_NAMESTRING              @"iPod touch 4G"
#define IPOD_UNKNOWN_NAMESTRING         @"Unknown iPod"

#define IPAD_1G_NAMESTRING              @"iPad 1G"
#define IPAD_2G_NAMESTRING              @"iPad 2G"
#define IPAD_3G_NAMESTRING              @"iPad 3G"
#define IPAD_4G_NAMESTRING              @"iPad 4G"
#define IPAD_UNKNOWN_NAMESTRING         @"Unknown iPad"

#define APPLETV_2G_NAMESTRING           @"Apple TV 2G"
#define APPLETV_3G_NAMESTRING           @"Apple TV 3G"
#define APPLETV_4G_NAMESTRING           @"Apple TV 4G"
#define APPLETV_UNKNOWN_NAMESTRING      @"Unknown Apple TV"

#define IOS_FAMILY_UNKNOWN_DEVICE       @"Unknown iOS device"

#define SIMULATOR_NAMESTRING            @"iPhone Simulator"
#define SIMULATOR_IPHONE_NAMESTRING     @"iPhone Simulator"
#define SIMULATOR_IPAD_NAMESTRING       @"iPad Simulator"
#define SIMULATOR_APPLETV_NAMESTRING    @"Apple TV Simulator" // :)

//iPhone 3G 以后各代的CPU型号和频率
#define IPHONE_3G_CPUTYPE               @"ARM11"
#define IPHONE_3G_CPUFREQUENCY          @"412MHz"
#define IPHONE_3GS_CPUTYPE              @"ARM Cortex A8"
#define IPHONE_3GS_CPUFREQUENCY         @"600MHz"
#define IPHONE_4_CPUTYPE                @"Apple A4"
#define IPHONE_4_CPUFREQUENCY           @"1GMHz"
#define IPHONE_4S_CPUTYPE               @"Apple A5 Double Core"
#define IPHONE_4S_CPUFREQUENCY          @"800MHz"

//iPod touch 4G 的CPU型号和频率
#define IPOD_4G_CPUTYPE                 @"Apple A4"
#define IPOD_4G_CPUFREQUENCY            @"800MHz"

#define IOS_CPUTYPE_UNKNOWN             @"Unknown CPU type"
#define IOS_CPUFREQUENCY_UNKNOWN        @"Unknown CPU frequency"

typedef enum {
    UIDeviceUnknown,
    
    UIDeviceSimulator,
    UIDeviceSimulatoriPhone,
    UIDeviceSimulatoriPad,
    UIDeviceSimulatorAppleTV,
    
    UIDevice1GiPhone,
    UIDevice3GiPhone,
    UIDevice3GSiPhone,
    UIDevice4iPhone,
    UIDevice4SiPhone,
    UIDevice5iPhone,
    
    UIDevice1GiPod,
    UIDevice2GiPod,
    UIDevice3GiPod,
    UIDevice4GiPod,
    
    UIDevice1GiPad,
    UIDevice2GiPad,
    UIDevice3GiPad,
    UIDevice4GiPad,
    
    UIDeviceAppleTV2,
    UIDeviceAppleTV3,
    UIDeviceAppleTV4,
    
    UIDeviceUnknowniPhone,
    UIDeviceUnknowniPod,
    UIDeviceUnknowniPad,
    UIDeviceUnknownAppleTV,
    UIDeviceIFPGA,
    
} UIDevicePlatform;

typedef enum {
    UIDeviceFamilyiPhone,
    UIDeviceFamilyiPod,
    UIDeviceFamilyiPad,
    UIDeviceFamilyAppleTV,
    UIDeviceFamilyUnknown,
    
} UIDeviceFamily;

@implementation UIDevice (Info)

+ (NSString *)device
{
    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 *) deviceModel
{
    NSString *model = [[UIDevice currentDevice] model];
    if ([model hasPrefix:@"iPad"]) {
        return @"iPad";
    } else if ([model hasPrefix:@"iPod"]) {
        return @"iPod";
    } else if ([model hasPrefix:@"iPhone"]){
        return @"iPhone";
    }
    
    return nil;
}

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

+ (NSString*)os
{
	return @"iOS";
}

+ (NSString *)carrier
{
	if (NSClassFromString(@"CTTelephonyNetworkInfo"))
	{
		CTTelephonyNetworkInfo *netinfo = [[[CTTelephonyNetworkInfo alloc] init] autorelease];
		CTCarrier *carrier = [netinfo subscriberCellularProvider];
		return [carrier carrierName];
	}
	
	return @"";
}

+ (NSString *)resolution
{
	CGRect bounds = [[UIScreen mainScreen] bounds];
	CGFloat scale = [[UIScreen mainScreen] respondsToSelector:@selector(scale)] ? [[UIScreen mainScreen] scale] : 1.f;
	CGSize res = CGSizeMake(bounds.size.width * scale, bounds.size.height * scale);
	NSString *result = [NSString stringWithFormat:@"%gx%g", res.width, res.height];
	
	return result;
}

+ (NSString *)locale
{
	return [[NSLocale currentLocale] localeIdentifier];
}

+ (NSString *)appVersion
{
	return [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleVersionKey];
}

+ (NSNumber *)timestamp
{
	return [NSNumber numberWithLong:time(NULL)];
}

#pragma mark sysctlbyname utils
+ (NSString *) getSysInfoByName:(char *)typeSpecifier
{
    size_t size;
    sysctlbyname(typeSpecifier, NULL, &size, NULL, 0);
    
    char *answer = malloc(size);
    sysctlbyname(typeSpecifier, answer, &size, NULL, 0);
    
    NSString *results = [NSString stringWithCString:answer encoding: NSUTF8StringEncoding];
    
    free(answer);
    return results;
}

#pragma mark platform information
+ (NSString *) platform
{
    return [self getSysInfoByName:"hw.machine"];
}

+ (NSUInteger) platformType
{
    NSString *platform = [self platform];
    
    // The ever mysterious iFPGA
    if ([platform isEqualToString:@"iFPGA"])        return UIDeviceIFPGA;
    
    // iPhone
    if ([platform isEqualToString:@"iPhone1,1"])    return UIDevice1GiPhone;
    if ([platform isEqualToString:@"iPhone1,2"])    return UIDevice3GiPhone;
    if ([platform hasPrefix:@"iPhone2"])            return UIDevice3GSiPhone;
    if ([platform hasPrefix:@"iPhone3"])            return UIDevice4iPhone;
    if ([platform hasPrefix:@"iPhone4"])            return UIDevice4SiPhone;
    if ([platform hasPrefix:@"iPhone5"])            return UIDevice5iPhone;
    
    // iPod
    if ([platform hasPrefix:@"iPod1"])              return UIDevice1GiPod;
    if ([platform hasPrefix:@"iPod2"])              return UIDevice2GiPod;
    if ([platform hasPrefix:@"iPod3"])              return UIDevice3GiPod;
    if ([platform hasPrefix:@"iPod4"])              return UIDevice4GiPod;
    
    // iPad
    if ([platform hasPrefix:@"iPad1"])              return UIDevice1GiPad;
    if ([platform hasPrefix:@"iPad2"])              return UIDevice2GiPad;
    if ([platform hasPrefix:@"iPad3"])              return UIDevice3GiPad;
    if ([platform hasPrefix:@"iPad4"])              return UIDevice4GiPad;
    
    // Apple TV
    if ([platform hasPrefix:@"AppleTV2"])           return UIDeviceAppleTV2;
    if ([platform hasPrefix:@"AppleTV3"])           return UIDeviceAppleTV3;
    
    if ([platform hasPrefix:@"iPhone"])             return UIDeviceUnknowniPhone;
    if ([platform hasPrefix:@"iPod"])               return UIDeviceUnknowniPod;
    if ([platform hasPrefix:@"iPad"])               return UIDeviceUnknowniPad;
    if ([platform hasPrefix:@"AppleTV"])            return UIDeviceUnknownAppleTV;
    
    // Simulator thanks Jordan Breeding
    if ([platform hasSuffix:@"86"] || [platform isEqual:@"x86_64"])
    {
        BOOL smallerScreen = [[UIScreen mainScreen] bounds].size.width < 768;
        return smallerScreen ? UIDeviceSimulatoriPhone : UIDeviceSimulatoriPad;
    }
    
    return UIDeviceUnknown;
}

+ (NSString *) platformString
{
    switch ([self platformType])
    {
        case UIDevice1GiPhone: return IPHONE_1G_NAMESTRING;
        case UIDevice3GiPhone: return IPHONE_3G_NAMESTRING;
        case UIDevice3GSiPhone: return IPHONE_3GS_NAMESTRING;
        case UIDevice4iPhone: return IPHONE_4_NAMESTRING;
        case UIDevice4SiPhone: return IPHONE_4S_NAMESTRING;
        case UIDevice5iPhone: return IPHONE_5_NAMESTRING;
        case UIDeviceUnknowniPhone: return IPHONE_UNKNOWN_NAMESTRING;
            
        case UIDevice1GiPod: return IPOD_1G_NAMESTRING;
        case UIDevice2GiPod: return IPOD_2G_NAMESTRING;
        case UIDevice3GiPod: return IPOD_3G_NAMESTRING;
        case UIDevice4GiPod: return IPOD_4G_NAMESTRING;
        case UIDeviceUnknowniPod: return IPOD_UNKNOWN_NAMESTRING;
            
        case UIDevice1GiPad : return IPAD_1G_NAMESTRING;
        case UIDevice2GiPad : return IPAD_2G_NAMESTRING;
        case UIDevice3GiPad : return IPAD_3G_NAMESTRING;
        case UIDevice4GiPad : return IPAD_4G_NAMESTRING;
        case UIDeviceUnknowniPad : return IPAD_UNKNOWN_NAMESTRING;
            
        case UIDeviceAppleTV2 : return APPLETV_2G_NAMESTRING;
        case UIDeviceAppleTV3 : return APPLETV_3G_NAMESTRING;
        case UIDeviceAppleTV4 : return APPLETV_4G_NAMESTRING;
        case UIDeviceUnknownAppleTV: return APPLETV_UNKNOWN_NAMESTRING;
            
        case UIDeviceSimulator: return SIMULATOR_NAMESTRING;
        case UIDeviceSimulatoriPhone: return SIMULATOR_IPHONE_NAMESTRING;
        case UIDeviceSimulatoriPad: return SIMULATOR_IPAD_NAMESTRING;
        case UIDeviceSimulatorAppleTV: return SIMULATOR_APPLETV_NAMESTRING;
            
        case UIDeviceIFPGA: return IFPGA_NAMESTRING;
            
        default: return IOS_FAMILY_UNKNOWN_DEVICE;
    }
}

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

#pragma mark cpu information
+ (NSString *) cpuType
{
    switch ([self platformType])
    {
        case UIDevice3GiPhone: return IPHONE_3G_CPUTYPE;
        case UIDevice3GSiPhone: return IPHONE_3GS_CPUTYPE;
        case UIDevice4iPhone: return IPHONE_4_CPUTYPE;
        case UIDevice4SiPhone: return IPHONE_4S_CPUTYPE;
        case UIDevice4GiPod: return IPOD_4G_CPUTYPE;
        default: return IOS_CPUTYPE_UNKNOWN;
    }
}

+ (NSString *) cpuFrequency
{
    switch ([self platformType])
    {
        case UIDevice3GiPhone: return IPHONE_3G_CPUFREQUENCY;
        case UIDevice3GSiPhone: return IPHONE_3GS_CPUFREQUENCY;
        case UIDevice4iPhone: return IPHONE_4_CPUFREQUENCY;
        case UIDevice4SiPhone: return IPHONE_4S_CPUFREQUENCY;
        case UIDevice4GiPod: return IPOD_4G_CPUFREQUENCY;
        default: return IOS_CPUFREQUENCY_UNKNOWN;
    }
}

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

+ (NSArray *)cpuUsage
{
    NSMutableArray *usage = [NSMutableArray array];
    //    float usage = 0;
    processor_info_array_t _cpuInfo, _prevCPUInfo = nil;
    mach_msg_type_number_t _numCPUInfo, _numPrevCPUInfo = 0;
    unsigned _numCPUs;
    NSLock *_cpuUsageLock;
    
    int _mib[2U] = { CTL_HW, HW_NCPU };
    size_t _sizeOfNumCPUs = sizeof(_numCPUs);
    int _status = sysctl(_mib, 2U, &_numCPUs, &_sizeOfNumCPUs, NULL, 0U);
    if(_status)
        _numCPUs = 1;
    
    _cpuUsageLock = [[NSLock alloc] init];
    
    natural_t _numCPUsU = 0U;
    kern_return_t err = host_processor_info(mach_host_self(), PROCESSOR_CPU_LOAD_INFO, &_numCPUsU, &_cpuInfo, &_numCPUInfo);
    if(err == KERN_SUCCESS) {
        [_cpuUsageLock lock];
        
        for(unsigned i = 0U; i < _numCPUs; ++i) {
            Float32 _inUse, _total;
            if(_prevCPUInfo) {
                _inUse = (
                          (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER]   - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER])
                          + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM])
                          + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE]   - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE])
                          );
                _total = _inUse + (_cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE] - _prevCPUInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE]);
            } else {
                _inUse = _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_USER] + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_SYSTEM] + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_NICE];
                _total = _inUse + _cpuInfo[(CPU_STATE_MAX * i) + CPU_STATE_IDLE];
            }
            
            //            NSLog(@"Core : %u, Usage: %.2f%%", i, _inUse / _total * 100.f);
            float u = _inUse / _total * 100.f;
            [usage addObject:[NSNumber numberWithFloat:u]];
        }
        
        [_cpuUsageLock unlock];
        
        if(_prevCPUInfo) {
            size_t prevCpuInfoSize = sizeof(integer_t) * _numPrevCPUInfo;
            vm_deallocate(mach_task_self(), (vm_address_t)_prevCPUInfo, prevCpuInfoSize);
        }
        
        _prevCPUInfo = _cpuInfo;
        _numPrevCPUInfo = _numCPUInfo;
        
        _cpuInfo = nil;
        _numCPUInfo = 0U;
    } else {
        NSLog(@"Error!");
    }
    return usage;
}

#pragma mark memory information
+ (NSUInteger) totalMemoryBytes
{
    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) NSLog(@"Failed to fetch vm statistics");
    
    //    natural_t   mem_used = (vm_stat.active_count + vm_stat.inactive_count + vm_stat.wire_count) * pagesize;
    natural_t   mem_free = vm_stat.free_count * pagesize;
    //    natural_t   mem_total = mem_used + mem_free;
    
    return mem_free;
}

#pragma mark disk information
+ (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;
}

+ (BOOL) isJailBreak
{
//    int res = access("/var/mobile/Library/AddressBook/AddressBook.sqlitedb", F_OK);
//    if (res != 0)
//        return NO;
//    return YES;
    
    BOOL jailbroken = NO;
    NSString *cydiaPath = @"/Applications/Cydia.app";
    NSString *aptPath = @"/private/var/lib/apt/";
    if ([[NSFileManager defaultManager] fileExistsAtPath:cydiaPath]) {
        jailbroken = YES;
    }
    if ([[NSFileManager defaultManager] fileExistsAtPath:aptPath]) {
        jailbroken = YES;
    }
    return jailbroken;
}

#pragma mark bluetooth information
+ (BOOL) bluetoothCheck
{
    switch ([self platformType])
    {
        case UIDevice3GiPhone: return YES;
        case UIDevice3GSiPhone: return YES;
        case UIDevice4iPhone: return YES;
        case UIDevice4SiPhone: return YES;
        case UIDevice5iPhone: return YES;
            
        case UIDevice3GiPod: return YES;
        case UIDevice4GiPod: return YES;
            
        case UIDevice1GiPad : return YES;
        case UIDevice2GiPad : return YES;
        case UIDevice3GiPad : return YES;
        case UIDevice4GiPad : return YES;
            
        default: return NO;
    }
}

@end