iOS动画之CATransition动画

2017-07-20  本文已影响322人  白水灬煮一切

iOS动画之CATransition动画

9月 22, 2016 发布在 Objective-C

今天主要用到的动画类是CALayer下的CATransition至于各种动画类中如何继承的在这也不做赘述,网上的资料是一抓一大把。好废话少说切入今天的正题。

一.封装动画方法

1.用CATransition实现动画的封装方法如下,每句代码是何意思,请看注释之。

#pragma CATransition动画实现

- (void) transitionWithType:(NSString *) type WithSubtype:(NSString *) subtype ForView : (UIView *) view

{

//创建CATransition对象

CATransition *animation = [CATransition animation];

//设置运动时间

animation.duration = DURATION;

//设置运动type

animation.type = type;

if (subtype != nil) {

//设置子类

animation.subtype = subtype;

}

//设置运动速度

animation.timingFunction = UIViewAnimationOptionCurveEaseInOut;

[view.layer addAnimation:animation forKey:@"animation"];

}

代码说明:

CATransition常用的属性如下:

• duration:设置动画时间

• type:稍后下面会详细的介绍运动类型

• subtype:和type匹配使用,指定运动的方向,下面也会详细介绍

• timingFunction :

◦ 动画的运动轨迹,用于变化起点和终点之间的插值计算,形象点说它决定了动画运行的节奏,比如是均匀变化(相同时间变化量相同)还是先快后慢,先慢后快还是先慢再快再慢.

◦ 动画的开始与结束的快慢,有五个预置分别为(下同):

▪ kCAMediaTimingFunctionLinear 线性,即匀速

▪ kCAMediaTimingFunctionEaseIn 先慢后快

▪ kCAMediaTimingFunctionEaseOut 先快后慢

▪ kCAMediaTimingFunctionEaseInEaseOut 先慢后快再慢

▪ kCAMediaTimingFunctionDefault 实际效果是动画中间比较快.

2.用UIView的block回调实现动画的代码封装

#pragma UIView实现动画

- (void) animationWithView : (UIView *)view WithAnimationTransition : (UIViewAnimationTransition) transition

{

[UIView animateWithDuration:DURATION animations:^{

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

[UIView setAnimationTransition:transition forView:view cache:YES];

}];

}

3.改变View的背景图,便于切换时观察

#pragma 给View添加背景图

-(void)addBgImageWithImageName:(NSString *) imageName

{

self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:imageName]];

}

二.调用上面的方法实现我们想要的动画

1.我们在View上添加多个Button,给不同的Button设置不同的Tag值,然后再ViewController中绑定同一个方法,点击不同的button实现不同的页面切换效果。storyBoard上的控件效果如下图所示:

2.下面我们就开始编写点击button要回调的方法

• 定义枚举来标示按钮所对应的动画类型,代码如下:

typedef enum : NSUInteger {

Fade = 1,                  //淡入淡出

Push,                      //推挤

Reveal,                    //揭开

MoveIn,                    //覆盖

Cube,                      //立方体

SuckEffect,                //吮吸

OglFlip,                    //翻转

RippleEffect,              //波纹

PageCurl,                  //翻页

PageUnCurl,                //反翻页

CameraIrisHollowOpen,      //开镜头

CameraIrisHollowClose,      //关镜头

CurlDown,                  //下翻页

CurlUp,                    //上翻页

FlipFromLeft,              //左翻转

FlipFromRight,              //右翻转

} AnimationType;

• 获取Button的Tag值:

UIButton *button = sender;

AnimationType animationType = button.tag;

• 每次点击button都改变subtype的值,包括上,左,下,右

NSString *subtypeString;

switch (_subtype) {

case 0:

subtypeString = kCATransitionFromLeft;

break;

case 1:

subtypeString = kCATransitionFromBottom;

break;

case 2:

subtypeString = kCATransitionFromRight;

break;

case 3:

subtypeString = kCATransitionFromTop;

break;

default:

break;

}

_subtype += 1;

if (_subtype > 3) {

_subtype = 0;

}

• 通过switch结合上边的枚举来判断是那个按钮点击的

switch (animationType)

{

//各种Case,此处代码下面会给出

}

3.调用我们封装的运动方法,来实现动画效果

• 淡化效果

case Fade:

[self transitionWithType:kCATransitionFade WithSubtype:subtypeString ForView:self.view];

break;

• Push效果

case Push:

[self transitionWithType:kCATransitionPush WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 揭开效果:

case Reveal:

[self transitionWithType:kCATransitionReveal WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 覆盖效果:

case MoveIn:

[self transitionWithType:kCATransitionMoveIn WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 立方体效果:

case Cube:

[self transitionWithType:@"cube" WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 吮吸效果:

case SuckEffect:

[self transitionWithType:@"suckEffect" WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 翻转效果:

case OglFlip:

[self transitionWithType:@"oglFlip" WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 波纹效果:

case RippleEffect:

[self transitionWithType:@"rippleEffect" WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 翻页和反翻页效果:

case PageCurl:

[self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:self.view];

break;

case PageUnCurl:

[self transitionWithType:@"pageUnCurl" WithSubtype:subtypeString ForView:self.view];

break;

效果如下:

• 相机打开效果:

case CameraIrisHollowOpen:

[self transitionWithType:@"cameraIrisHollowOpen" WithSubtype:subtypeString ForView:self.view];

break;

case CameraIrisHollowClose:

[self transitionWithType:@"cameraIrisHollowClose" WithSubtype:subtypeString ForView:self.view];

break;

• 调用上面封装的第二个动画方法

case CurlDown:

[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionCurlDown];

break;

case CurlUp:

[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionCurlUp];

break;

case FlipFromLeft:

[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionFlipFromLeft];

break;

case FlipFromRight:

[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionFlipFromRight];

break;

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