本人开发的开发者技术变现资源聚集地,大家支持下，下面是网址
https://www.baiydu.com
想提高下以后做的应用给客户带去的体验，所以看了几天OC的CAAnimation动画类，也做了几个小案例，下面讲个别案例来做为本文的主要内容。
一:继承结构截图
上面截图中用得最多的类大概就是，CABaseAnimation和 CAKeyframeAnimation，这两个类的最大区别就是对动画的控制，CABaseAnimation 不能在类中增加和控制帧，CAKeyframeAnimation这个类可以在代码中增加和控制帧动画和每帧运行的时间， CAAnimation是所有类的基类，所以它能实现所有类能实现的功能，我做的案例中也用到了这个类， CAAnimationGroup是组动画，可以将其他5动画类的动画，放入它的属性数组，然后增加到动画目标视图的Layer中去，同时实现多个动画效果。
二:案例
我这里一共贴两个动画的案例，第一个是CAAniamtion的，第二个是CAAnimationGroup组动画，它里面就包含了
CABaseAnimation和CAKeyframeAnimation
CAAniamtion动画是为抽奖转盘写的，中奖后从底部弹出提示中奖动画视图， 最后一帧动画主要实现对弹出视图的隐藏，X坐标=设备宽度 Y坐标=0
1：封装动画方法
- (CAAnimation*)Animation:(CGFloat)axisX jumpValue:(CGFloat)value thisType:(int)type {
CGMutablePathRef path = CGPathCreateMutable();
CGPathMoveToPoint(path,NULL,axisX,DEVICE_Height);
if (type==) {
CGPathAddLineToPoint(path, NULL, axisX, );
}
else if(type==)
{
CGPathAddLineToPoint(path, NULL, axisX, );
}
else if(type==)
{
CGPathAddLineToPoint(path, NULL, axisX, );
}
else
{
CGPathAddLineToPoint(path, NULL, axisX, );
}
CGPathAddLineToPoint(path, NULL, axisX, );
CGPathAddLineToPoint(path, NULL, axisX, );
CGPathAddLineToPoint(path, NULL, axisX, );
CGPathAddLineToPoint(path, NULL, axisX, );
CGPathAddLineToPoint(path, NULL, axisX, );
CGPathAddLineToPoint(path, NULL, axisX, );
CGPathAddLineToPoint(path, NULL, DEVICE_Width, );
CAKeyframeAnimation *
animation = [CAKeyframeAnimation
animationWithKeyPath:@"position"];
[animation setPath:path];
[animation setDuration:1.5];
[animation setCalculationMode:kCAAnimationLinear];
NSArray * arr= [NSArray arrayWithObjects:[NSNumber numberWithFloat:0.0],
[NSNumber numberWithFloat:0.12],
[NSNumber numberWithFloat:0.24],
[NSNumber numberWithFloat:0.36],
[NSNumber numberWithFloat:0.48],
[NSNumber numberWithFloat:0.60],
[NSNumber numberWithFloat:0.72],
[NSNumber numberWithFloat:0.5],
[NSNumber numberWithFloat:value ],nil];
[animation setKeyTimes:arr];
[animation setTimingFunctions:[NSArray arrayWithObjects:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut], nil]]; animation.delegate=self;
animation.duration=1.5;
CFRelease(path);
return animation;
}
2:调用
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:YES]; coinViewArray=[[NSMutableArray alloc]init];//这个数组是一个字段，用来保存底部弹出的视图，等动画结束需要将他们移除的
CGFloat width=DEVICE_Width-;
CGFloat everyWidht=(width-)/;
CGFloat theAxisX=;
for (int i=; i<; i++) {
UIImageView *scView=[[UIImageView alloc]initWithFrame:CGRectMake(theAxisX+i*+i*everyWidht, DEVICE_Height, everyWidht, everyWidht)];
scView.image=[UIImage imageNamed:@"Coin.jpg"];
scView.layer.cornerRadius=everyWidht/;
scView.backgroundColor=[UIColor redColor];
[coinViewArray addObject:scView];
CGFloat jumpValue;
if (i==) { jumpValue=1.2;
}
else if(i==)
{
jumpValue=1.1;
scView.backgroundColor=[UIColor yellowColor];
}
else if(i==)
{ scView.backgroundColor=[UIColor blueColor];
jumpValue=;
}
else
{
scView.backgroundColor=[UIColor greenColor];
jumpValue=0.9; } [scView.layer addAnimation:[self Animation:scView.layer.position.x jumpValue:jumpValue thisType:i]
forKey:@"position"];
[scView.layer setPosition:CGPointMake(scView.frame.origin.x,scView.frame.origin.y)]; [self addSubview:scView];
} UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"LuckyCenterButton"]];
imgView.backgroundColor=[UIColor redColor];
imgView.frame = CGRectMake(, , , );
[self addSubview:imgView];
}
3:代理(动画结束移除执行动画之后保存在数组里面的视图）
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
for (int i=; i<coinViewArray.count; i++) {
UIImageView *imageView=[coinViewArray objectAtIndex:i]; [imageView removeFromSuperview];
}
}
CAAnimationGroup主动画，贝塞尔设置关键帧动画的路径，中间实现缩放，透明.....
1：代码
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:YES]; UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"LuckyCenterButton"]];
imgView.backgroundColor=[UIColor redColor];
imgView.frame = CGRectMake(, , , );
[self addSubview:imgView]; //贝塞尔曲线路径
UIBezierPath *movePath = [UIBezierPath bezierPath];
// 设置动画的起点坐标
[movePath moveToPoint:CGPointMake(DEVICE_Width/-, DEVICE_Height/-)];
// 、CABasicAnimation可看做是最多只有2个关键帧的CAKeyframeAnimation /* [_pushCoverMudimViewController.view.superview addSubview:_customActionSheet];
CAKeyframeAnimation *popAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
popAnimation.duration = 0.4;
popAnimation.values = @[[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.01f, 0.01f, 1.0f)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.1f, 1.1f, 1.0f)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.9f, 0.9f, 1.0f)],
[NSValue valueWithCATransform3D:CATransform3DIdentity]];
popAnimation.keyTimes = @[@0.2f, @0.5f, @0.75f, @1.0f];
popAnimation.timingFunctions = @[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[_customActionSheet.layer addAnimation:popAnimation forKey:nil];
*/ [movePath addQuadCurveToPoint:CGPointMake(DEVICE_Width,) controlPoint:self.view.center]; //以下必须导入QuartzCore包
// 关键帧动画（位置）
CAKeyframeAnimation * posAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"];
posAnim.path = movePath.CGPath;
posAnim.removedOnCompletion = YES; //缩放动画
CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"];
scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity]; //动画时的放大缩小倍数
scaleAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.3, 0.3, )];
scaleAnim.removedOnCompletion = YES; //透明动画
CABasicAnimation *opacityAnim = [CABasicAnimation animationWithKeyPath:@"alpha"];
opacityAnim.fromValue = [NSNumber numberWithFloat:1.0];
opacityAnim.toValue = [NSNumber numberWithFloat:0.1];
opacityAnim.removedOnCompletion = YES; //动画组
CAAnimationGroup *animGroup = [CAAnimationGroup animation]; animGroup.animations = [NSArray arrayWithObjects:posAnim, scaleAnim, opacityAnim, nil];
animGroup.duration = ;
// 这里需要对动画的两个属性进行设置，让图层在完成动画后停留在动画后的状态。a
animGroup.fillMode = kCAFillModeForwards;
animGroup.removedOnCompletion = NO;
[imgView.layer addAnimation:animGroup forKey:nil]; }