转发:http://www.cocoachina.com/ios/20141226/10775.htmlhtml
今天所介绍的主题是关于动画的,在以前的博客中也有用到动画的地方,今天就好好的总结一下iOS开发中经常使用的动画。说到动画其中有一个是仿射变换的概念,至于怎么仿射的怎么变换的,原理如何等在本篇博客中不作赘述。今天要分享的是如和用动画作出咱们要作的效果。ios
今天主要用到的动画类是CALayer下的CATransition至于各类动画类中如何继承的在这也不作赘述,网上的资料是一抓一大把。好废话少说切入今天的正题。动画
一.封装动画方法url
1.用CATransition实现动画的封装方法以下,每句代码是何意思,请看注释之。spa
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#pragma CATransition动画实现
- (void) transitionWithType:(NSString *) type WithSubtype:(NSString *) subtype ForView : (UIView *) view
{
//建立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"
];
}
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代码说明:code
CATransition经常使用的属性以下:htm
duration:设置动画时间对象
type:稍后下面会详细的介绍运动类型blog
subtype:和type匹配使用,指定运动的方向,下面也会详细介绍继承
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,好比是均匀变化(相同时间变化量相同)仍是先快后慢,先慢后快仍是先慢再快再慢。
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
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#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];
}];
}
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3.改变View的背景图,便于切换时观察
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#pragma 给View添加背景图
-(void)addBgImageWithImageName:(NSString *) imageName
{
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:imageName]];
}
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二.调用上面的方法实现咱们想要的动画
1.咱们在View上添加多个Button,给不一样的Button设置不一样的Tag值,而后再ViewController中绑定同一个方法,点击不一样的button实现不一样的页面切换效果。storyBoard上的控件效果以下图所示:
2.下面咱们就开始编写点击button要回调的方法
(1).定义枚举来标示按钮所对应的动画类型,代码以下:
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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;
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(2),获取Button的Tag值:
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UIButton *button = sender;
AnimationType animationType = button.tag;
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(3).每次点击button都改变subtype的值,包括上,左,下,右
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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;
}
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(4)经过switch结合上边的枚举来判断是那个按钮点击的
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switch
(animationType)
{
//各类Case,此处代码下面会给出
}
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3.调用咱们封装的运动方法,来实现动画效果
(1)淡化效果
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case
Fade:
[self transitionWithType:kCATransitionFade WithSubtype:subtypeString ForView:self.view];
break
;
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(2).Push效果
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case
Push:
[self transitionWithType:kCATransitionPush WithSubtype:subtypeString ForView:self.view];
break
;
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效果以下:
(3).揭开效果:
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case
Reveal:
[self transitionWithType:kCATransitionReveal WithSubtype:subtypeString ForView:self.view];
break
;
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效果图以下:
(4).覆盖效果
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case
MoveIn:
[self transitionWithType:kCATransitionMoveIn WithSubtype:subtypeString ForView:self.view];
break
;
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效果图以下:
(5).立方体效果
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case
Cube:
[self transitionWithType:@
"cube"
WithSubtype:subtypeString ForView:self.view];
break
;
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效果以下:
(6).吮吸效果
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case
SuckEffect:
[self transitionWithType:@
"suckEffect"
WithSubtype:subtypeString ForView:self.view];
break
;
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效果以下:
(7).翻转效果
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case
OglFlip:
[self transitionWithType:@
"oglFlip"
WithSubtype:subtypeString ForView:self.view];
break
;
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图以下:
(8).波纹效果
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case
RippleEffect:
[self transitionWithType:@
"rippleEffect"
WithSubtype:subtypeString ForView:self.view];
break
;
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(9).翻页和反翻页效果
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case
PageCurl:
[self transitionWithType:@
"pageCurl"
WithSubtype:subtypeString ForView:self.view];
break
;
case
PageUnCurl:
[self transitionWithType:@
"pageUnCurl"
WithSubtype:subtypeString ForView:self.view];
break
;
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(10).相机打开效果
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case
CameraIrisHollowOpen:
[self transitionWithType:@
"cameraIrisHollowOpen"
WithSubtype:subtypeString ForView:self.view];
break
;
case
CameraIrisHollowClose:
[self transitionWithType:@
"cameraIrisHollowClose"
WithSubtype:subtypeString ForView:self.view];
break
;
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(11).调用上面封装的第二个动画方法
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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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