iOS中的CABasicAnimation的相关学习示例

CABasicAnimation 只有三个常用到的属性：fromValue  toValue  ByValue；

下面是他的一些参数说明：

(1).Autoreverses

当你设定这个属性为 YES 时,在它到达目的地之后,动画的返回到开始的值,代替了直接跳转到 开始的值。

(1).Duration
Duration 这个参数你已经相当熟悉了。它设定开始值到结束值花费的时间。期间会被速度的属性所影响。 RemovedOnCompletion
这个属性默认为 YES,那意味着,在指定的时间段完成后,动画就自动的从层上移除了。这个一般不用。

假如你想要再次用这个动画时,你需要设定这个属性为 NO。这样的话,下次你在通过-set 方法设定动画的属 性时,它将再次使用你的动画,而非默认的动画。

(2).Speed

默认的值为 1.0.这意味着动画播放按照默认的速度。如果你改变这个值为 2.0,动画会用 2 倍的速度播放。 这样的影响就是使持续时间减半。如果你指定的持续时间为 6 秒,速度为 2.0,动画就会播放 3 秒钟---一半的 持续时间。

(3).BeginTime

这个属性在组动画中很有用。它根据父动画组的持续时间,指定了开始播放动画的时间。默认的是 0.0.组 动画在下个段落中讨论“Animation Grouping”。

(4).TimeOffset

如果一个时间偏移量是被设定,动画不会真正的可见,直到根据父动画组中的执行时间得到的时间都流逝 了。

(5).RepeatCount

默认的是 0,意味着动画只会播放一次。如果指定一个无限大的重复次数,使用 1e100f。这个不应该和 repeatDration 属性一块使用。

(6).RepeatDuration

这个属性指定了动画应该被重复多久。动画会一直重复,直到设定的时间流逝完。它不应该和 repeatCount 一起使用。

我们可以通过animationWithKeyPath键值对的方式来改变动画，具体参数如下：

　 transform.scale = 比例轉換

transform.scale.x = 闊的比例轉換

transform.scale.y = 高的比例轉換

transform.rotation.z = 平面圖的旋轉

opacity = 透明度

margin

zPosition

backgroundColor    背景颜色

cornerRadius    圆角

borderWidth

bounds

contents

contentsRect

cornerRadius

frame

hidden

mask

masksToBounds

opacity

position

shadowColor

shadowOffset

shadowOpacity

shadowRadius

下面是一些app中常用到的动画效果，用以记录方便以后使用

//永久闪烁的动画

 1 +(CABasicAnimation *)opacityForever_Animation:(float)time ／／永久闪烁的动画
 2  
 3 {
 4  
 5     CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"opacity"];
 6  
 7     animation.fromValue=[NSNumber numberWithFloat:1.0];
 8  
 9     animation.toValue=[NSNumber numberWithFloat:0.0];
10  
11     animation.autoreverses=YES;
12  
13     animation.duration=time;
14  
15     animation.repeatCount=FLT_MAX;
16  
17     animation.removedOnCompletion=NO;
18  
19     animation.fillMode=kCAFillModeForwards;
20  
21     return animation;
22  
23 }

//有闪烁次数的动画

 1 +(CABasicAnimation *)opacityTimes_Animation:(float)repeatTimes durTimes:(float)time;
 2
 3 {
 4
 5     CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"opacity"];
 6
 7     animation.fromValue=[NSNumber numberWithFloat:1.0];
 8
 9     animation.toValue=[NSNumber numberWithFloat:0.4];
10
11     animation.repeatCount=repeatTimes;
12
13     animation.duration=time;
14
15     animation.removedOnCompletion=NO;
16
17     animation.fillMode=kCAFillModeForwards;
18
19     animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
20
21     animation.autoreverses=YES;
22
23     return  animation;
24
25 }

//横向移动

 1 +(CABasicAnimation *)moveX:(float)time X:(NSNumber *)x
 2
 3 {
 4
 5     CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
 6
 7     animation.toValue=x;
 8
 9     animation.duration=time;
10
11     animation.removedOnCompletion=NO;
12
13     animation.fillMode=kCAFillModeForwards;
14
15     return animation;
16
17 }

//纵向移动

 1 +(CABasicAnimation *)moveY:(float)time Y:(NSNumber *)y
 2
 3 {
 4
 5     CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"transform.translation.y"];
 6
 7     animation.toValue=y;
 8
 9     animation.duration=time;
10
11     animation.removedOnCompletion=NO;
12
13     animation.fillMode=kCAFillModeForwards;
14
15     return animation;
16
17 }

//缩放

 1 +(CABasicAnimation *)scale:(NSNumber *)Multiple orgin:(NSNumber *)orginMultiple durTimes:(float)time Rep:(float)repeatTimes
 2 {
 3
 4     CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"transform.scale"];
 5
 6     animation.fromValue=orginMultiple;
 7
 8     animation.toValue=Multiple;
 9
10     animation.duration=time;
11
12     animation.autoreverses=YES;
13
14     animation.repeatCount=repeatTimes;
15
16     animation.removedOnCompletion=NO;
17
18     animation.fillMode=kCAFillModeForwards;
19
20     return animation;
21
22 }

//组合动画

 1 +(CAAnimationGroup *)groupAnimation:(NSArray *)animationAry durTimes:(float)time Rep:(float)repeatTimes
 2
 3 {
 4
 5     CAAnimationGroup *animation=[CAAnimationGroup animation];
 6
 7     animation.animations=animationAry;
 8
 9     animation.duration=time;
10
11     animation.repeatCount=repeatTimes;
12
13     animation.removedOnCompletion=NO;
14
15     animation.fillMode=kCAFillModeForwards;
16
17     return animation;
18
19 }

//路径动画

 1 +(CAKeyframeAnimation *)keyframeAniamtion:(CGMutablePathRef)path durTimes:(float)time Rep:(float)repeatTimes
 2
 3 {
 4
 5     CAKeyframeAnimation *animation=[CAKeyframeAnimation animationWithKeyPath:@"position"];
 6
 7     animation.path=path;
 8
 9     animation.removedOnCompletion=NO;
10
11     animation.fillMode=kCAFillModeForwards;
12
13     animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
14
15     animation.autoreverses=NO;
16
17     animation.duration=time;
18
19     animation.repeatCount=repeatTimes;
20
21     return animation;
22
23 }

//点移动

 1 +(CABasicAnimation *)movepoint:(CGPoint )point
 2 {
 3
 4     CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"transform.translation"];
 5
 6     animation.toValue=[NSValue valueWithCGPoint:point];
 7
 8     animation.removedOnCompletion=NO;
 9
10     animation.fillMode=kCAFillModeForwards;
11
12     return animation;
13
14 }

//旋转

 1 +(CABasicAnimation *)rotation:(float)dur degree:(float)degree direction:(int)direction repeatCount:(int)repeatCount
 2
 3 {
 4
 5     CATransform3D rotationTransform  = CATransform3DMakeRotation(degree, 0, 0,direction);
 6
 7     CABasicAnimation* animation;
 8
 9     animation = [CABasicAnimation animationWithKeyPath:@"transform"];
10
11
12
13 animation.toValue= [NSValue valueWithCATransform3D:rotationTransform];
14
15     animation.duration= dur;
16
17 animation.autoreverses= NO;
18
19     animation.cumulative= YES;
20
21     animation.removedOnCompletion=NO;
22
23     animation.fillMode=kCAFillModeForwards;
24
25     animation.repeatCount= repeatCount;
26
27 animation.delegate= self;
28
29
30
31 return animation;
32
33 }