判断设备是否越狱的方法

- (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;
}