动画画圆的效果特效ios源码

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，还可以扩展成画其他平面图形功能等，大家可以下载看看吧。




//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"];

}

源码下载：

http://code.662p.com/view/2993.html