Objective-c 动画

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

Objective-c 动画

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==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;
}

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