通过源码获取iphone硬件版本以及系统信息

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获取iphone的系统信息使用[UIDevice currentDevice],信息如下：

[[UIDevice currentDevice] systemName]：系统名称，如iPhone OS

[[UIDevice currentDevice] systemVersion]：系统版本，如4.2.1

[[UIDevice currentDevice] model]：The model of the device，如iPhone或者iPod touch

[[UIDevice currentDevice] uniqueIdentifier]：设备的惟一标识号，deviceID

[[UIDevice currentDevice] name]：设备的名称，如 张三的iPhone

[[UIDevice currentDevice] localizedModel]：类似model

但是以上的信息无法得到设备的硬件版本,例如一个系统版本为4.2.1的iPhone，有可能是iPhone3GS，也有可能是iPhone4。

有些时候我们要判断app运行的设备是否已越狱，以上的信息也无法获得。

所以我们自己为UIDevice添加一个category来实现：

@interface UIDevice (Helper)

- (BOOL)isJailbroken;

- (NSString *)platformString;

@end

#include <sys/types.h>

#include <sys/sysctl.h>

@implementation UIDevice (Helper)

- (BOOL)isJailbroken {

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;

}

- (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;

}

- (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″;

if ([platform isEqualToString:@"iPhone4,1"]) return @”iPhone 4S”;

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:@"iPad1,1"]) return @”iPad”;

if ([platform isEqualToString:@"i386"] || [platform isEqualToString:@"x86_64"])

return @”iPhone Simulator”;

return platform;

}

@end

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