-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{           CATransition *transition = [CATransition animation];    // 动画时间控制    transition.duration = 0.3f;    //动画的开始与结束的快慢    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];    //是否代理    transition.delegate = self;    //此动画执行完后会自动remove,默认值为true    transition.removedOnCompletion = NO;    //各种动画效果    transition.type = kCATransitionMoveIn;    //动画方向    transition.subtype = kCATransitionFromTop;        FirstViewController *viewCon = [[FirstViewController alloc]init];        [self.navigationController pushViewController:viewCon animated:NO];        // 想添加CA动画的VIEW的层上添加此代码    [self.navigationController.view.layer addAnimation:transition forKey:nil];}

 /* 过渡效果     fade     //交叉淡化过渡(不支持过渡方向)     push     //新视图把旧视图推出去     moveIn   //新视图移到旧视图上面     reveal   //将旧视图移开,显示下面的新视图     cube     //立方体翻滚效果     oglFlip  //上下左右翻转效果     suckEffect   //收缩效果，如一块布被抽走(不支持过渡方向)     rippleEffect //滴水效果(不支持过渡方向)     pageCurl     //向上翻页效果     pageUnCurl   //向下翻页效果     cameraIrisHollowOpen  //相机镜头打开效果(不支持过渡方向)     cameraIrisHollowClose //相机镜头关上效果(不支持过渡方向)     */        /* 过渡方向     fromRight;     fromLeft;     fromTop;     fromBottom;     */