核心英雄
1
| PopAnimation CAShapeLayer kPOPShapeLayerStrokeEnd
|
使用CAShapeLayer与UIBezierPath画出想要的图形(http://blog.csdn.net/volcan1987/article/details/9969455)
1
2
3
4
| 1、新建UIBezierPath对象bezierPath
2、新建CAShapeLayer对象caShapeLayer
3、将bezierPath的CGPath赋值给caShapeLayer的path，即caShapeLayer.path = bezierPath.CGPath
4、把caShapeLayer添加到某个显示该图形的layer中
|
下边代码完成了绘制一个圆圈，使用动画的方式呈现
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
| self.circle = [CAShapeLayer layer];
self.circle.path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(location.x - radius,
location.y - radius,
radius*2,
radius*2)
cornerRadius:radius].CGPath;
// Configure the apperence of the circle
self.circle.fillColor = [UIColor clearColor].CGColor;
self.circle.strokeColor = [UIColor whiteColor].CGColor;
self.circle.lineWidth = 2;
self.circle.strokeEnd = 0.0;
// Add to parent layer
[self.layer addSublayer:self.circle];
POPBasicAnimation *draw = [POPBasicAnimation animationWithPropertyNamed:kPOPShapeLayerStrokeEnd];
draw.fromValue = @(0.0);
draw.toValue = @(1.0);
draw.duration = 0.8;
draw.delegate = self;
[draw setValue:@"draw" forKey:@"animName"];
draw.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[self.circle pop_addAnimation:draw forKey:@"draw"];
|
代码来源 https://github.com/iBaro/PopPlayground
原创作品，转载请注明出处，谢谢。