CATransition *animation = [CATransition animation];

    animation.delegate = self;

    animation.duration = 0.5f;

    animation.timingFunction = UIViewAnimationCurveEaseInOut;

    if ([subView isKindOfClass:[AreaNumPickerView class]]) {

        animation.subtype = kCATransitionFromBottom;

    }else{

        animation.type    = kCATransitionPush;     //平移

        animation.subtype = kCATransitionFromRight;//从右到左

    }

    [superView addSubview:subView];

    [[superView layer] addAnimation:animation forKey:@"animation"];