獲取當前IOS設備的CPU型號，CPU核數，GPU，GPU核數，屏幕分辨率，屏幕尺寸，PPI等信息

今天和你們一塊兒分享下如何獲取當前IOS設備的CPU型號，CPU核數，GPU，GPU核數，屏幕分辨率，屏幕尺寸，PPI等信息。相信各位發現經過蘋果官方開放的API想要獲取當前設備以上的一些信息彷佛作不到。現在蘋果的硬件更新速度至關的快，還要在網上發現有有心人收集了全部已發佈蘋果設備的相關設備信息，且不按期回去更新。詳情請見：Blake’s iOS Device Specifications Grid

http://www.blakespot.com/ios_device_specifications_grid.html

筆者比較懶，因而就借用這位有心人的設備信息來幫助咱們獲取iOS的以上的設備信息。下面咱們就來看看代碼。

首先咱們爲NSString添加一個Category，NSString+StringRegular。

//
//  NSString+StringRegular.h
//  HardwareInfo
//
//  Created by pcjbird on 15/5/27.
//  Copyright (c) 2015年 Zero Status. All rights reserved.
//#import <Foundation/Foundation.h>

@interface NSString (StringRegular)

-(NSMutableArray *)substringByRegular:(NSString *)regular;

@end

//
//  NSString+StringRegular.m
//  HardwareInfo
//
//  Created by pcjbird on 15/5/27.
//  Copyright (c) 2015年 Zero Status. All rights reserved.
//#import "NSString+StringRegular.h"

@implementation NSString (StringRegular)

-(NSMutableArray *)substringByRegular:(NSString *)regular{
    
    NSString * reg=regular;
    
    NSRange r= [self rangeOfString:reg options:NSRegularExpressionSearch];
    
    NSMutableArray *arr=[NSMutableArray array];
    
    if (r.length != NSNotFound &&r.length != 0) {
        
        while (r.length != NSNotFound &&r.length != 0) {
            NSString* substr = [self substringWithRange:r];
            [arr addObject:substr];
            NSRange startr=NSMakeRange(r.location+r.length, [self length]-r.location-r.length);
            r=[self rangeOfString:reg options:NSRegularExpressionSearch range:startr];
        }
    }
    return arr;
}

@end

接下來，咱們來實現iOSHardwareInfoDataBase。

//
//  iOSHardwareInfoDataBase.h
//  HardwareInfo
//
//  Created by pcjbird on 15/5/27.
//  Copyright (c) 2015年 Zero Status. All rights reserved.
//#import <Foundation/Foundation.h>/*********************************
 Device,
 Model ID,
 Year,
 SoC,
 RAM (MB),
 Mem Speed (MHz),
 Mem Type,
 CPU,
 CPU Arch,
 Data Width,
 CPU Cores,
 CPU Clock (MHz),
 Geekbench Score, GPU,
 GPU Cores,
 GPU Clock (MHz),
 Screen Res, PPI,
 Screen Size (inches)
 *********************************/@interface iOSHardwareInfoDataBase : NSObject

+ (iOSHardwareInfoDataBase *) sharedInstance;
@property(nonatomic, readonly) BOOL isReady;

-(NSDictionary *)currentDeviceInfo;
@end

//
// iOSHardwareInfoDataBase.m
// HardwareInfo
//
// Created by pcjbird on 15/5/27.
// Copyright (c) 2015年 Zero Status. All rights reserved.
//#import "iOSHardwareInfoDataBase.h"
#import "NSString+StringRegular.h"
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>

#define IOS_DEVICE_SPECIFICATIONS_GRID_URL @"http://www.blakespot.com/ios_device_specifications_grid.html"

@interface iOSHardwareInfoDataBase()
{
    BOOL _isReady;
}
@property(nonatomic, strong) NSMutableDictionary* db;
@end

@implementation iOSHardwareInfoDataBase

@synthesize isReady = _isReady;

+ (iOSHardwareInfoDataBase *) sharedInstance
{
    static iOSHardwareInfoDataBase* _sharedInstance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        if (!_sharedInstance) {
            if (!_sharedInstance) _sharedInstance=[[iOSHardwareInfoDataBase alloc] init];
        }
    });
    return _sharedInstance;
}

-(id)init
{
    if (self =[super init]) {
        _isReady = FALSE;
        self.db = [NSMutableDictionary dictionary];
        dispatch_async(dispatch_get_global_queue(0, 0), ^(void){
            [self TryParse];
        });
    }
    return self;
}

-(NSString *)getMetaData
{
    NSURL *url = [NSURL URLWithString:IOS_DEVICE_SPECIFICATIONS_GRID_URL];
    NSData *data = [NSData dataWithContentsOfURL:url];
    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

-(void) TryParse
{
    NSFileManager*fileManager =[NSFileManager defaultManager];
    NSArray*paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
    NSString*documentsDirectory =[paths objectAtIndex:0];
    NSString*path =[documentsDirectory stringByAppendingPathComponent:@"hardware"];
    if([fileManager fileExistsAtPath:path])
    {
        NSData *jsonData = [[NSFileManager defaultManager] contentsAtPath:path];
        NSDictionary * db= [jsonData toJSONObject];
        [self.db addEntriesFromDictionary:db];
    }
    NSString *metaData = [self getMetaData];
    if (!metaData)
    {
        _isReady = TRUE;
        return;
    }
    NSRange rangeTable= [metaData rangeOfString:@"<table border=0 cellpadding=0 cellspacing=2>[\\s\\S]*</table>" options:NSRegularExpressionSearch];
    if (rangeTable.length <=0)
    {
        _isReady = TRUE;
        return;
    }
    [self.db removeAllObjects];
    NSString* tableStr = [[metaData substringWithRange:rangeTable] stringByReplacingOccurrencesOfString:@" " withString:@""];
    tableStr = [tableStr stringByReplacingOccurrencesOfString:@"<br>" withString:@" "];
    tableStr = [tableStr stringByReplacingOccurrencesOfString:@"# " withString:@""];
    
    NSMutableArray *infoArray=[tableStr substringByRegular:@"<tr[\\s\\S]*?>[\\s\\S]*?</tr>"];

    NSString *titleStr = [infoArray firstObject];
    NSMutableArray *titleArr = [titleStr substringByRegular:@"<td[\\s\\S]*?>[\\s\\S]*?</td>"];
    
    for (NSUInteger i = 0; i < [titleArr count]; i++)
    {
        NSString *title = [titleArr objectAtIndex:i];
        NSRange rangetd = [title rangeOfString:@"<td[\\s\\S]*?>" options:NSRegularExpressionSearch];
        title = [title stringByReplacingCharactersInRange:rangetd withString:@""];
        title = [title stringByReplacingOccurrencesOfString:@"</td>" withString:@" "];
        [titleArr replaceObjectAtIndex:i withObject:title];
    }
    
    [infoArray removeObjectAtIndex:0];
    [infoArray removeLastObject];
    
    for (NSString *deviceInfo in infoArray)
    {
        NSMutableArray *devices = [deviceInfo substringByRegular:@"<td[\\s\\S]*?>[\\s\\S]*?</td>"];
        
        for (NSUInteger i = 0; i < [devices count]; i++)         
        {
             NSString *val = [devices objectAtIndex:i];
             NSRange rangetd = [val rangeOfString:@"<td[\\s\\S]*?>" options:NSRegularExpressionSearch]; 
            val = [val stringByReplacingCharactersInRange:rangetd withString:@""];
             val = [val stringByReplacingOccurrencesOfString:@"</td>" withString:@" "]; 
            [devices replaceObjectAtIndex:i withObject:val];
         } 
        NSString *deviceKey = [devices objectAtIndex:1];
        NSArray* keyArr = [[deviceKey stringByReplacingOccurrencesOfString:@" " withString:@""] componentsSeparatedByString:@"•"];
         NSRange chRange = [[keyArr firstObject] rangeOfString:@"[\\D]*" options:NSRegularExpressionSearch]; 
        NSString* chs = [[keyArr firstObject] substringWithRange:chRange]; 
        for (NSString* _key in keyArr)
         { 
            if (_key && [_key length] > 0)
            {
                NSMutableDictionary *dict = [NSMutableDictionary dictionary];
                for (NSUInteger j = 0; j < [titleArr count]; j++)
                {
                    if (j != 1)
                    {
                        NSString *titleKey = [[titleArr objectAtIndex:j] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
                        NSString *deviceVal = [[devices objectAtIndex:j]stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];;
                        [dict setObject:deviceVal forKey:titleKey];
                    }
                }
                NSString* dKey = _key;
                if ([dKey rangeOfString:chs].length == 0) dKey = [chs stringByAppendingString:dKey];
                [self.db setObject:dict forKey:dKey];
            }
        }
    }
    _isReady = TRUE;
    NSData *newJsonData = [DataParseUtil toJSONData:self.db];
    [newJsonData writeToFile:path atomically:YES];
}

- (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 stringWithCString:machine encoding:NSUTF8StringEncoding];
    free(machine);
    return platform;
}

-(NSDictionary *)currentDeviceInfo
{
    if (_isReady)
    {
        return [self.db objectForKey:[self platform]];
    }
    return nil;
}
@end

最後咱們來寫下測試部分的代碼。

   //在程序啓動時調用如下代碼
   [iOSHardwareInfoDataBase sharedInstance];   //在須要獲取設備信息的地方調用如下代碼
   NSLog(@"current device info: %@", [[iOSHardwareInfoDataBase sharedInstance] currentDeviceInfo]);

但願這段分享對您有所幫助。