想提高下以後做的應用給客戶帶去的體驗，所以看了幾天OC的CAAnimation動畫類，也做了幾個小案例，下面講個別案例來做為本文的主要內容。

一:繼承結構截圖

 

 上面截圖中用得最多的類大概就是，CABaseAnimation和 CAKeyframeAnimation，這兩個類的最大區別就是對動畫的控制，CABaseAnimation 不能在類中增加和控制幀，CAKeyframeAnimation這個類可以在代碼中增加和控制幀動畫和每幀運行的時間， CAAnimation是所有類的基類，所以它能實現所有類能實現的功能，我做的案例中也用到了這個類， CAAnimationGroup是組動畫，可以將其他5動畫類的動畫，放入它的屬性數組，然後增加到動畫目標視圖的Layer中去，同時實現多個動畫效果。

 

二:案例 

   我這裡一共貼兩個動畫的案例，第一個是CAAniamtion的，第二個是CAAnimationGroup組動畫，它裡面就包含了

CABaseAnimation和CAKeyframeAnimation 

  CAAniamtion動畫是為抽獎轉盤寫的，中獎後從底部彈出提示中獎動畫視圖， 最後一幀動畫主要實現對彈出視圖的隱藏，X坐標=設備寬度 Y坐標=0

    1：封裝動畫方法

- (CAAnimation*)Animation:(CGFloat)axisX jumpValue:(CGFloat)value  thisType:(int)type {
    CGMutablePathRef path = CGPathCreateMutable();
    CGPathMoveToPoint(path,NULL,axisX,DEVICE_Height);
  
    if (type==0) {
        
        CGPathAddLineToPoint(path, NULL, axisX, 283);
       
        
    }
    else if(type==1)
    {
        
        CGPathAddLineToPoint(path, NULL, axisX, 170);
   
        
    }
    else if(type==2)
    {
      
        CGPathAddLineToPoint(path, NULL, axisX, 200);
        
        
    }
    else
    {
       
        CGPathAddLineToPoint(path, NULL, axisX, 283);
    }
  CGPathAddLineToPoint(path, NULL, axisX, 179);
    CGPathAddLineToPoint(path, NULL, axisX, 207);
    CGPathAddLineToPoint(path, NULL, axisX, 187);
    CGPathAddLineToPoint(path, NULL, axisX, 199);
    CGPathAddLineToPoint(path, NULL, axisX, 193);
    CGPathAddLineToPoint(path, NULL, axisX, 195);
    CGPathAddLineToPoint(path, NULL, DEVICE_Width, 0);
     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;
}

View Code

    2:調用

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:YES];
   
     coinViewArray=[[NSMutableArray alloc]init];//這個數組是一個字段，用來保存底部彈出的視圖，等動畫結束需要將他們移除的
     CGFloat width=DEVICE_Width-60;
    CGFloat everyWidht=(width-60)/4;
     CGFloat theAxisX=30;
    for (int i=0; i<4; i++) {
        UIImageView *scView=[[UIImageView alloc]initWithFrame:CGRectMake(theAxisX+i*20+i*everyWidht, DEVICE_Height, everyWidht, everyWidht)];
        scView.image=[UIImage imageNamed:@"Coin.jpg"];
        scView.layer.cornerRadius=everyWidht/2;
        scView.backgroundColor=[UIColor redColor];
        [coinViewArray addObject:scView];
        CGFloat jumpValue;
        if (i==0) {
           
            jumpValue=1.2;
        }
        else if(i==1)
        {
             jumpValue=1.1;
              scView.backgroundColor=[UIColor yellowColor];
        }
        else if(i==2)
        {  scView.backgroundColor=[UIColor blueColor];
            jumpValue=1;
        }
        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(100, 100, 50, 50);
        [self addSubview:imgView];
}

View Code

    3:代理(動畫結束移除執行動畫之後保存在數組裡面的視圖）

- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
    for (int i=0; i<coinViewArray.count; i++) {
        UIImageView *imageView=[coinViewArray objectAtIndex:i];
        
        [imageView removeFromSuperview];
    }
}

View Code

 

  CAAnimationGroup主動畫，貝塞爾設置關鍵幀動畫的路徑，中間實現縮放，透明.....

 1：代碼

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:YES];
    
    UIImageView     *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"LuckyCenterButton"]];
    imgView.backgroundColor=[UIColor redColor];
        imgView.frame = CGRectMake(100, 100, 50, 50);
        [self addSubview:imgView];
    
    
         //貝塞爾曲線路徑
         UIBezierPath *movePath = [UIBezierPath bezierPath];
    // 設置動畫的起點坐標
         [movePath moveToPoint:CGPointMake(DEVICE_Width/2-25, DEVICE_Height/2-25)];
//    、CABasicAnimation可看做是最多只有2個關鍵幀的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,0) controlPoint:self.view.center];
    
       //以下必須導入QuartzCore包
     　// 關鍵幀動畫（位置）
         CAKeyframeAnimation * posAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"];
          posAnim.path = movePath.CGPath;
         posAnim.removedOnCompletion = YES;
    
         //縮放動畫
         CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"];
         scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];
    
                                                                        //動畫時的放大縮小倍數
         scaleAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.3, 0.3, 1)];
          scaleAnim.removedOnCompletion = YES;
    
         //透明動畫
         CABasicAnimation *opacityAnim = [CABasicAnimation animationWithKeyPath:@"alpha"];
         opacityAnim.fromValue = [NSNumber numberWithFloat:1.0];
          opacityAnim.toValue = [NSNumber numberWithFloat:0.1];
         opacityAnim.removedOnCompletion = YES;
    
         //動畫組
         CAAnimationGroup *animGroup = [CAAnimationGroup animation];
    
        animGroup.animations = [NSArray arrayWithObjects:posAnim, scaleAnim, opacityAnim, nil];
        animGroup.duration = 10;
  //  這裡需要對動畫的兩個屬性進行設置，讓圖層在完成動畫後停留在動畫後的狀態。a
    animGroup.fillMode = kCAFillModeForwards;
    animGroup.removedOnCompletion = NO;
        [imgView.layer addAnimation:animGroup forKey:nil];
 
}

View Code