IOS 获取IDFA以及判断是否越狱

//获取设备IDFA
+(NSString *) deviceIdfa
{
    NSString *systemVersion = [[UIDevice currentDevice] systemVersion];
    NSString *deviceIdfa = nil;
    if([systemVersion floatValue] >= 7.0f )
    {
        deviceIdfa = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
        deviceIdfa = [deviceIdfa stringByReplacingOccurrencesOfString:@"-" withString:@""];
    }else{
        deviceIdfa = [[UIDevice currentDevice] uniqueGlobalDeviceIdentifier];
    }
    return deviceIdfa;
}

//获取应用的版本号
+(NSString *) appVersion
{
    NSDictionary *infoDict =[[NSBundle mainBundle] infoDictionary];
    NSString *versionNum =[infoDict objectForKey:@"CFBundleVersion"];
    return versionNum;
}

//判断手机是否越狱
+(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;  
}