利用CATransition添加转换效果

    CATransition *transition = [CATransition animation];
    transition.duration = 1.0f;//间隔时间
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];//动画的开始与结束的快慢
    /*
     kCATransitionFade;
     kCATransitionMoveIn;
     kCATransitionPush;
     kCATransitionReveal;
     */
    transition.type = kCATransitionReveal; // 各种动画效果
    //@"cube" @"moveIn" @"reveal" @"fade"(default) @"pageCurl" @"pageUnCurl" @"suckEffect" @"rippleEffect" @"oglFlip"
    transition.type = @"oglFlip"; /* 各种动画效果*/
    
    /*
     kCATransitionFromRight;
     kCATransitionFromLeft;
     kCATransitionFromTop;
     kCATransitionFromBottom;
     */
    transition.subtype = kCATransitionFromTop;// 动画方向
    transition.delegate = self; 
    [self.navigationController.view.layer addAnimation:transition forKey:nil];
    //另外加一句,transition在申请时用的是+方法,所以不需要自己进行release ,在层上添加后不要认为retainCount已经+1,就还要release
    //实际上CATransition类中还有一个属性是removedOnCompletion,是此动画执行完后会自动remove,默认值为true
    HotelSearchController *hotelSearchController = [[HotelSearchController alloc] initWithStyle:UITableViewStyleGrouped];
    [self.navigationController pushViewController:hotelSearchController animated:YES];
    [hotelSearchController release];