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IOS-动画Animation_html/css_WEB-ITnose

WBOY
풀어 주다: 2016-06-24 11:40:08
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iOS Animation详解

本篇只要讲解iOS中动画的使用.
Animtion主要分为两类:UIView动画和CoreAnimation动画。
UIView动画有UIView属性动画,UIViewBlock动画,UIViewTransition动画。
而CoreAnimation动画主要通过CAAnimation和CALayer,常用的有CABasicAnimation,CAKeyframeAnimation,CATransition,CAAnimationGroup.

UIView动画

UIView属性动画

CGRect viewRect = CGRectMake(10,10,200,200);self.myView= [[UIView alloc] initWithFrame:viewRect];self.myView.backgroundColor = [UIColor whiteColor];[self.view addSubview:self.myView];//1 准备动画//参数1: 动画的作用, 任意字符串,用来区分多个动画, 参数二: 传递参数用 nil:OC中使用[UIView beginAnimations:@"changeSizeAndColor" context:nil];//在准备动画的时候可以设置动画的属性[UIView setAnimationDuration:0.7];[UIView setAnimationDelegate:self];[UIView setAnimationWillStartSelector:@selector(startAnimation)];[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];//动画的曲线[UIView setAnimationRepeatCount:2];[UIView setAnimationRepeatAutoreverses:YES];//动画往返执行, 必须设置动画的重复次数//2 修改view的属性, 可以同时修改多个属性 注意:不是所有的属性都可以修改的(只有frame, center, bounds, backgroundColor, alpha, transform 可以修改)self.myView.frame = CGRectMake(110, 100, 100, 100);self.myView.backgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255.0 green:arc4random() % 256 / 255.0 blue:arc4random() % 256 / 255.0 alpha:0.5];//3 提交并执行动画[UIView commitAnimations];
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Block动画

Block动画的实质是对UIView动画的封装

第一种

   [UIView animateWithDuration:2 animations:^{        self.myView.backgroundColor = [UIColor orangeColor];    }];
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第二种

    [UIView animateWithDuration:2 animations:^{        self.myView.backgroundColor = [UIColor orangeColor];    } completion:^(BOOL finished) {        //finished判断动画是否完成        if (finished) {            NSLog(@"finished");        }    }];
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第三种

 [UIView animateWithDuration:2 delay:1 options:UIViewAnimationOptionCurveEaseInOut animations:^{        // 设置要修改的View属性        self.myView.backgroundColor = [UIColor orangeColor];    } completion:^(BOOL finished) {        //finished判断动画是否完成        if (finished) {            NSLog(@"finished");        }    }];
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下面是AnimationOptionCurve参数:

 UIViewAnimationOptionTransitionNone            = 0 << 20, // default    UIViewAnimationOptionTransitionFlipFromLeft    = 1 << 20,    UIViewAnimationOptionTransitionFlipFromRight   = 2 << 20,    UIViewAnimationOptionTransitionCurlUp          = 3 << 20,    UIViewAnimationOptionTransitionCurlDown        = 4 << 20,    UIViewAnimationOptionTransitionCrossDissolve   = 5 << 20,    UIViewAnimationOptionTransitionFlipFromTop     = 6 << 20,    UIViewAnimationOptionTransitionFlipFromBottom  = 7 << 20,
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CoreAnimation动画

Core Animation是一组非常强大的动画处理API,使用它能做出非常绚丽的动画效果,而且往往是事半功倍,使用它需要添加QuartzCore .framework和引入对应的框架

CABasicAnimation基本动画

CABasicAnimation基本动画没有真正的修改属性值

初始化UIView的layer

 CGRect viewRect = CGRectMake(50,100,200,200);    self.myView= [[UIView alloc] initWithFrame:viewRect];    self.myView.backgroundColor = [UIColor whiteColor];    self.myView.layer.cornerRadius = 100;//设置圆角, 参数是内切圆的半径, 若想画一个圆, 前提是view必须是正方形, 参数应该是view边长的一半    self.myView.layer.borderWidth = 5;//设置描边的宽度    self.myView.layer.borderColor = [UIColor orangeColor].CGColor;//设置描边的颜色(UIView上的颜色使用的是UIColor, CALayer上使用的颜色是CGColor)    self.myView.layer.shadowOffset = CGSizeMake(50, 100);//设置阴影的偏移量 width影响水平偏移(正右负左), height影响垂直偏移(正下负上)    self.myView.layer.shadowColor = [UIColor redColor].CGColor;//阴影的偏移的颜色    self.myView.layer.shadowOpacity = 0.5;//阴影的不透明度, 取值范围(0 ~ 1), 默认是0, 就是透明的    [self.view addSubview:self.myView];
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动画方法:

 //1 创建并指定要修改的属性    //    KeyPath:CAlayer的属性名, 不是所有的属性都可以, 只有在头文件中出现animatable的属性才可以, 可以修改属性的属性, 例如:bounds.size    CABasicAnimation *basic = [CABasicAnimation animationWithKeyPath:@"bounds"];    [basic setDuration:0.7];    //2 修改属性值    basic.fromValue = [NSValue valueWithCGRect:CGRectMake(0, 0, self.myView.bounds.size.width, self.myView.bounds.size.height)];    basic.toValue = [NSValue valueWithCGRect:CGRectMake(0, 0, 300, 300)];    //3 添加动画    //key做区分动画用    [self.myView.layer addAnimation:basic forKey:@"changColor"];
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CAKeyframeAnimation关键帧动画

示例1,和上面的动画一样

  //1 创建动画     CAKeyframeAnimation *keyFrame = [CAKeyframeAnimation animationWithKeyPath:@"bounds"];     [keyFrame setDuration:2];     //2 修改属性     keyFrame.values = @[[NSValue valueWithCGRect:CGRectMake(0, 0, self.myView.bounds.size.width, self.myView.bounds.size.height)], [NSValue valueWithCGRect:CGRectMake(0, 0, 250, 250)], [NSValue valueWithCGRect:CGRectMake(0, 0, 300, 300)]];    //keyTimes:值代表了出现动画的时刻, 值得范围是0~1, 值必须是递增的, keyTimes和values是一一对应的     keyFrame.keyTimes = @[@(0.4), @(0.6), @(1)];     //3 添加动画     [self.myView.layer addAnimation:keyFrame forKey:@"keyFrame"]; 
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示例2,改变颜色

  CAKeyframeAnimation *keyFrame = [CAKeyframeAnimation animationWithKeyPath:@"backgroundColor"];    [keyFrame setDuration:3];    keyFrame.values = @[(id)[UIColor redColor].CGColor, (id)[UIColor orangeColor].CGColor, (id)[UIColor yellowColor].CGColor, (id)[UIColor greenColor].CGColor, (id)[UIColor blueColor].CGColor];    keyFrame.keyTimes = @[@(0.3), @(0.5), @(0.6), @(0.7), @(0.9)];    [self.myView.layer addAnimation:keyFrame forKey:nil];
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CATransaction 过度动画

  //1 创建    CATransition *transition = [CATransition animation];    [transition setDuration:2];    //2 设置过度样式    transition.type = kCATransitionReveal;//控制样式    transition.subtype = kCATransitionFromTop;//控制方向    //添加动画    [self.myView.layer addAnimation:transition forKey:nil];
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CAAnimationGroup 组动画

 //1 创建并指定要修改的属性    // KeyPath:CAlayer的属性名, 不是所有的属性都可以, 只有在头文件中出现animatable的属性才可以, 可以修改属性的属性, 例如:bounds.size    // CALayer    CABasicAnimation *basic = [CABasicAnimation animationWithKeyPath:@"bounds"];    [basic setDuration:2];    //2 修改属性值    basic.fromValue = [NSValue valueWithCGRect:CGRectMake(0, 0, self.myView.bounds.size.width, self.myView.bounds.size.height)];    basic.toValue = [NSValue valueWithCGRect:CGRectMake(0, 0, 300, 300)];    CAKeyframeAnimation *keyFrame = [CAKeyframeAnimation animationWithKeyPath:@"backgroundColor"];    [keyFrame setDuration:2];    keyFrame.values = @[(id)[UIColor redColor].CGColor, (id)[UIColor orangeColor].CGColor, (id)[UIColor yellowColor].CGColor, (id)[UIColor greenColor].CGColor, (id)[UIColor blueColor].CGColor];    //keyTimes中的第一个值是0, 不能修改    keyFrame.keyTimes = @[@(0.3), @(0.5), @(0.6), @(0.7), @(0.9)];    // 创建    //当group动画的时长 > 组中所有动画的最长时长, 动画的时长以组中最长的时长为准    //当group动画的时长 < 组中所有动画的最长时长, 动画的时长以group的时长为准    //最合适: group的时长 = 组中所有动画的最长时长    CAAnimationGroup *group = [CAAnimationGroup animation];    [group setDuration:10];    //设置组动画    group.animations = @[basic, keyFrame];    //添加动画    [self.myView.layer addAnimation:group forKey:nil];
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//**平移动画**CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"position"];// 动画持续1秒anim.duration =1; //因为CGPoint是结构体,所以用NSValue包装成一个OC对象anim.fromValue = [NSValue valueWithCGPoint:CGPointMake(50, 50)];anim.toValue = [NSValue valueWithCGPoint:CGPointMake(100, 100)];//通过MyAnim可以取回相应的动画对象,比如用来中途取消动画[layer addAnimation:anim forKey:@"MyAnim"];//**缩放动画**CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"transform"];//没有设置fromValue说明当前状态作为初始值//宽度(width)变为原来的2倍,高度(height)变为原来的1.5倍anim.toValue = [NSValuevalueWithCATransform3D:CATransform3DMakeScale(2, 1.5, 1)];anim.duration = 1;[layer addAnimation:anim forKey:nil];/**/旋转动画**CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"transform"];//这里是以向量(1, 1, 0)为轴,旋转π/2弧度(90&deg;)//如果只是在手机平面上旋转,就设置向量为(0, 0, 1),即Z轴anim.toValue = [NSValuevalueWithCATransform3D:CATransform3DMakeRotation(M_PI_2, 1, 1, 0)];anim.duration = 1;[layer addAnimation:anim forKey:nil];
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UIImageView的帧动画

 UIImageView可以让一系列的图片在特定的时间内按顺序显示 .
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相关属性解析:

animationImages:要显示的图片(一个装着UIImage的NSArray) .animationDuration:完整地显示一次animationImages中的所有图片所需的时间 .animationRepeatCount:动画的执行次数(默认为0,代表无限循环) 
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相关方法解析:

- (void)startAnimating; 开始动画 .- (void)stopAnimating;  停止动画 .- (BOOL)isAnimating;  是否正在运行动画.
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重点内容
参考文档
http://www.pocketdigi.com/20150105/1413.html

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