动画(一)
2015-10-28 本文已影响1230人
土鳖不土
粉友们好久不见,很久之前就想和大家分享动画的一些东东。都没实现,这次做了几个小动画效果送给大家。
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首先来看第一个:基础动画,由于gif图和真实动画效果有差别,所以看起来有点怪怪的。不过大概就是这个意思。
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说这个之前 先说下所有的动画效果都是基于
CALayerd
的,所以说你通常看到的动画效果都是view
里面的layer
在呈现。以下是一个粗略的导图,应该还是蛮清楚的。
基础动画
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转圈代码如下:
- (void)transformAnimation
{
// 1.创建动画对象
CABasicAnimation *anim = [CABasicAnimation animation];
// 2.设置动画对象
// keyPath决定了执行怎样的动画, 调整哪个属性来执行动画
anim.keyPath = @"transform.rotation";//转圈
// anim.keyPath = @"transform.scale.x";//平铺扩充
// anim.keyPath = @"transform.translation.y";//平移
#warning 以下两个效果一样,都是包装成对象类型
anim.toValue = @(100);
// anim.toValue = [NSValue valueWithCGPoint:CGPointMake(100, 100)];
anim.duration = 2.0;
// 动画执行完毕后不要删除动画
anim.removedOnCompletion = NO;
// 保持最新的状态
anim.fillMode = kCAFillModeForwards;
// 3.添加动画
[self.layer addAnimation:anim forKey:nil];
}
帧动画
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//曲线动画路径
-(void)keyFrameAnimation{
CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
anim.keyPath = @"position";
anim.removedOnCompletion = NO;
anim.fillMode = kCAFillModeForwards;
anim.duration = 2.0;
CGMutablePathRef path = CGPathCreateMutable();
CGPathAddEllipseInRect(path, NULL, CGRectMake(100, 100, 150, 150));
//动画执行路径
anim.path = path;
CGPathRelease(path);
// 设置动画的执行节奏
// kCAMediaTimingFunctionEaseInEaseOut : 一开始比较慢, 中间会加速, 临近结束的时候, 会变慢
anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
anim.repeatCount = MAXFLOAT;
anim.delegate = self;
[self.redView.layer addAnimation:anim forKey:nil];
}
//直线动路径
- (void)testMove
{
// CABasicAnimation fromValue --> toValue
CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
anim.keyPath = @"position";
NSValue *v1 = [NSValue valueWithCGPoint:CGPointMake(00, 80)];
NSValue *v2 = [NSValue valueWithCGPoint:CGPointMake(100, 0)];
NSValue *v3 = [NSValue valueWithCGPoint:CGPointMake(100, 200)];
NSValue *v4 = [NSValue valueWithCGPoint:CGPointMake(200, 400)];
//动画的直线路径
anim.values = @[v1, v2, v3, v4];
// anim.keyTimes = @[@(0.5), @(0.25), @(0.25)];
anim.duration = 2.0;
anim.removedOnCompletion = NO;
anim.fillMode = kCAFillModeForwards;
anim.repeatCount = MAXFLOAT;
[self.redView.layer addAnimation:anim forKey:nil];
}
转场动画
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转场动画代码如下:
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-(void)starAnimation{
self.index++;
if (self.index == 9) {
self.index = 0;
}
NSString *filename = [NSString stringWithFormat:@"%d.png", self.index + 1];
self.iconImageView.image = [UIImage imageNamed:filename];
// 转场动画
CATransition *anim = [CATransition animation];
// anim.type = @"pageCurl";
anim.type = @"cube";
anim.subtype = kCATransitionFromLeft;
anim.duration = 0.8;
anim.repeatCount = MAXFLOAT;
// anim.startProgress = 0.5;
////
// anim.endProgress = 0.5;
[self.view.layer addAnimation:anim forKey:nil];
}
组合动画
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代码如下:
-(void)starAnimation{
// 1.创建旋转动画对象
CABasicAnimation *rotate = [CABasicAnimation animation];
rotate.keyPath = @"transform.rotation";
//旋转的度数M_PI = 180度
rotate.toValue = @(M_PI*2);
// 2.创建缩放动画对象
CABasicAnimation *scale = [CABasicAnimation animation];
scale.keyPath = @"transform.scale";
//缩放的比例大小 >1放大 <1缩小
scale.toValue = @(0.5);
// 3.平移动画
CABasicAnimation *move = [CABasicAnimation animation];
move.keyPath = @"transform.translation";
move.toValue = [NSValue valueWithCGPoint:CGPointMake(20, 100)];
// 4.将所有的动画添加到动画组中
CAAnimationGroup *group = [CAAnimationGroup animation];
group.animations = @[rotate, scale, move];
group.duration = 2.0;
group.removedOnCompletion = NO;
group.fillMode = kCAFillModeForwards;
[self.redView.layer addAnimation:group forKey:nil];
}
动画(1)就到这里了,具体在代码里面注释很清楚了。
2015 -10 - 28 23:27上海