CATransition(转场动画)基本属性

//CA_EXTERN NSString * const kCATransitionFade
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);
//CA_EXTERN NSString * const kCATransitionMoveIn
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);
//CA_EXTERN NSString * const kCATransitionPush
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);
//CA_EXTERN NSString * const kCATransitionReveal
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);

/* Common transition subtypes. */

//CA_EXTERN NSString * const kCATransitionFromRight
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);
//CA_EXTERN NSString * const kCATransitionFromLeft
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);
//CA_EXTERN NSString * const kCATransitionFromTop
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);
//CA_EXTERN NSString * const kCATransitionFromBottom
//__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);

/**
 *  上一张
 */
- (IBAction)previous {
    //索引加1 ,1
    self.count--;
    //创建转场对象
    CATransition *animation = [CATransition animation];
    
    /* 过渡效果 */
    //fade     //交叉淡化过渡(不支持过渡方向) kCATransitionFade
    //push     //新视图把旧视图推出去  kCATransitionPush
    //moveIn   //新视图移到旧视图上面   kCATransitionMoveIn
    //reveal   //将旧视图移开,显示下面的新视图  kCATransitionReveal
    
    ///******下面几个也是过渡效果，但它们是私有API效果，使用的时候要小心，可能会导致app审核不被通过***/
    //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)

    
    //设定转场的动画模式
    animation.type = @"push";
    //设定转场fangXiang
    animation.subtype = @"fromTop";
    //ABS()可以取绝对值
    NSString *imageName = [NSString stringWithFormat:@"%zd",ABS(self.count % 7) + 1];
    self.iconView.image = [UIImage imageNamed:imageName];
    
    [self.iconView.layer addAnimation:animation forKey:nil];
}
/**
 *  下一张
 */
- (IBAction)next {
    
    //索引加1 ,1
    self.count++;
    //创建转场对象
    CATransition *animation = [CATransition animation];
    
    //设定转场的动画模式
    animation.type = kCATransitionFade;
    //设定转场fangXiang
    animation.subtype = kCATransitionFromRight;
    //ABS()可以取绝对值
    NSString *imageName = [NSString stringWithFormat:@"%zd",ABS(self.count % 7) + 1];
    self.iconView.image = [UIImage imageNamed:imageName];
    
    [self.iconView.layer addAnimation:animation forKey:nil];
    
    
}