IOS中的动画——Core Animation

jopen 9年前

一、基础动画 CABasicAnimation 
1  //初始化方式      CABasicAnimation * cabase=[CABasicAnimation animation];  2  //通过keyPath设置需要实现动画的属性,此处设为bounds  cabase.keyPath=@"bounds";  3 //通过toValue设置动画结束时候的状态  cabase.toValue=[NSValue valueWithCGRect:CGRectMake(0, 0, 10, 100)];   //通过byValue设置每次改变的范围  cabase.byValue=[NSValue valueWithCGRect:CGRectMake(0, 0, 10, 100)];  //设置开始时候的状态      cabase.fromValue=[NSValue valueWithCGPoint:CGPointMake(0, 0)];    4  //设置动画持续的时间  cabase.duration=2;      //保存动画     cabase.fillMode=kCAFillModeForwards;      //保存设置不取消     cabase.removedOnCompletion=NO;  [_layer addAnimation:cabase forKey:nil];

  案例：通过基础动画实现仿射变换动画 

CABasicAnimation * cabase=[CABasicAnimation animation];  cabase.keyPath=@"transform";  cabase.toValue=[NSValue valueWithCATransform3D:CATransform3DMakeScale(1, 2, 1)];  cabase.duration=2;  cabase.fillMode=kCAFillModeForwards;          cabase.removedOnCompletion=NO;  [_layer addAnimation:cabase forKey:nil];
二、关键帧动画 
1  //初始化方式  CAKeyframeAnimation * keyfram=[CAKeyframeAnimation animation];  2  //通过keyPath设置需要实现动画的属性,此处设为position  keyfram.keyPath=@"position";  3 //设置动画的需要经过的点      CGPoint  p1=CGPointZero;      CGPoint  p2=CGPointMake(150, 0);      CGPoint  p3=CGPointMake(150, 150);      CGPoint  p4=CGPointMake(0, 150);      CGPoint  p5=CGPointZero;        NSValue * v1=[NSValue valueWithCGPoint:p1];      NSValue * v2=[NSValue valueWithCGPoint:p2];      NSValue * v3=[NSValue valueWithCGPoint:p3];      NSValue * v4=[NSValue valueWithCGPoint:p4];  NSValue * v5=[NSValue valueWithCGPoint:p5];  4 //将对应的值添加到动画并且设置动画保留      keyfram.values=@[v1,v2,v3,v4,v5];      keyfram.duration=1;      keyfram.fillMode=kCAFillModeForwards;      keyfram.removedOnCompletion=NO;  [_layer addAnimation:keyfram forKey:nil];

案例：通过关键帧动画实现图片摇摆 

  CAKeyframeAnimation * anima=[CAKeyframeAnimation animation];      //通过设置放射变换的角度来实现      anima.keyPath=@"transform.rotation";      float p1=4/180.0*M_PI;      anima.duration=0.2;      anima.values=@[@(-p1),@(p1),@(-p1)];      anima.fillMode=kCAFillModeForwards;      anima.removedOnCompletion=NO;      anima.repeatCount=MAXFLOAT;      [_layer addAnimation:anima forKey:nil];  _layer.transform=CATransform3DMakeRotation(M_PI, 0, 0, 0);

 
  
       
           三、转场动画        
     
  
  
1  //初始化方式  CATransition * tran=[CATransition animation];  2  //设置动画效果  tran.type=@"rippleEffect";    //常用效果  kCATransitionFade  kCATransitionMoveIn  kCATransitionPush  kCATransitionReveal    3 //设置动画方向  tran.subtype=kCATransitionFromLeft;    //动画方向  kCATransitionFromRight  kCATransitionFromLeft  kCATransitionFromTop  kCATransitionFromBottom    4 //设置动画保留以及动画时长    tran.fillMode=kCAFillModeForwards;    tran.removedOnCompletion=NO;    tran.duration=1;    [self.myImageView.layer addAnimation:tran forKey:nil];
 
  
       
           四、UIView封装动画        
     
  
    UIKit直接将动画集成到UIView类中，当内部的一些属性发生改变时，UIView将为这些改变提供动画支持。执行动画所需要的工作由UIView类自动完成，但仍要在希望执行动画时通知视图，为此需要将改变属性的代码放在[UIViewbeginAnimations:nil context:nil]和[UIView commitAnimations]之间 
  
     1、常见方法解析: 
  
  
//设置动画代理  + (void)setAnimationDelegate:(id)delegate       //设置当动画即将开始时，执行delegate对象的selector，并且把beginAnimations:context:中传入的参数传进selector    +(void)setAnimationWillStartSelector:(SEL)selector       //设置动画结束时调用方法  + (void)setAnimationDidStopSelector:(SEL)selector     //设置动画持续时间  +(void)setAnimationDuration:(NSTimeInterval)duration      //设置动画延迟  + (void)setAnimationDelay:(NSTimeInterval)delay       //设置动画开始时间  + (void)setAnimationStartDate:(NSDate *)startDate    //设置动画节奏  + (void)setAnimationCurve:(UIViewAnimationCurve)curve     //设置动画重复次数  + (void)setAnimationRepeatCount:(float)repeatCount       //如果设置为YES,代表动画每次重复执行的效果会跟上一次相反  +(void)setAnimationRepeatAutoreverses:(BOOL)repeatAutoreverses     // 设置视图view的过渡效果, transition指定过渡类型, cache设置YES代表使用视图缓存，性能较好  + (void)setAnimationTransition:(UIViewAnimationTransition)transition forView:(UIView *)view cache:(BOOL)cache 
 
  
    2、案例 
  
    
  
   //旋转动画      [UIView beginAnimations:@"roate" context:nil];      [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];      [UIView setAnimationDuration:1.5];       [UIView setAnimationDelegate:self];      _view.transform=CGAffineTransformRotate(_view.transform, M_PI_2);      [UIView setAnimationDidStopSelector:@selector(endAnimate)];  [UIView commitAnimations];      //转场动画  [UIView beginAnimations:@"transition" context:nil];      [UIView setAnimationCurve:UIViewAnimationCurveLinear];      [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:_mainView cache:YES];      [UIView setAnimationDuration:1.5];      NSInteger index1=[_mainView.subviews indexOfObject:_view];      NSInteger index2=[_mainView.subviews indexOfObject:_view2];      [_mainView exchangeSubviewAtIndex:index1 withSubviewAtIndex:index2];      [UIView commitAnimations];