支持动画画圆的效果特效

这是一款不错的支持动画画圆的效果特效源码，该效果实现了动画画圆，而且还可以扩展成画其他平面图形功能等，喜欢的朋友可以下载看看吧。 //定义所需要画的图形 -(void)intiUIOfView { UIBezierPath *path=[UIBezierPath bezierPath]; CGRect rect=[UIScreen mainScreen].applicationFrame; [path addArcWithCenter:CGPointMake(rect.size.width/2,rect.size.height/2-20) radius:100 startAngle:0 endAngle:2*M_PI clockwise:NO]; arcLayer=[CAShapeLayer layer]; arcLayer.path=path.CGPath;//46,169,230 arcLayer.fillColor=[UIColor colorWithRed:46.0/255.0 green:169.0/255.0 blue:230.0/255.0 alpha:1].CGColor; arcLayer.strokeColor=[UIColor colorWithWhite:1 alpha:0.7].CGColor; arcLayer.lineWidth=3; arcLayer.frame=self.view.frame; [self.view.layer addSublayer:arcLayer]; [self drawLineAnimation:arcLayer]; } //定义动画过程 -(void)drawLineAnimation:(CALayer*)layer { CABasicAnimation *bas=[CABasicAnimation animationWithKeyPath:@"strokeEnd"]; bas.duration=1; bas.delegate=self; bas.fromValue=[NSNumber numberWithInteger:0]; bas.toValue=[NSNumber numberWithInteger:1]; [layer addAnimation:bas forKey:@"key"]; }