//模拟Push

- (void)pushView:(UIView *)pushView inView:(UIView *)inView

{

    CATransition *animation = [CATransition animation];

    animation.duration = 0.2f;

    animation.timingFunction = [CAMediaTimingFunction

                                functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

    animation.fillMode = kCAFillModeForwards;

    animation.type = kCATransitionPush;

    animation.subtype = kCATransitionFromRight;

    [inView.layer addAnimation:animation forKey:nil];

    [inView addSubview:pushView];

}

//模拟pop

- (void)navPopView:(UIView *)popView

{

    CATransition *animation = [CATransition animation];

    animation.duration = 0.2f;

    animation.timingFunction = [CAMediaTimingFunction

                                functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

    animation.fillMode = kCAFillModeForwards;

    animation.type = kCATransitionPush;

    animation.subtype = kCATransitionFromLeft;

    [self.view.layer addAnimation:animation forKey:nil];

    [popView removeFromSuperview];

}