如何在Objective C中绘制线条的动画？

我试图动画绘制对象，比如我画这种方法行：如何在Objective C中绘制线条的动画？

UIBezierPath *path = [UIBezierPath bezierPath]; 
    [path moveToPoint:CGPointMake(Center.x, Center.y)]; 
    [path addLineToPoint:CGPointMake(Point.x,Point.y)]; 

    CAShapeLayer *shapeLayer = [CAShapeLayer layer]; 
    shapeLayer.path = [path CGPath]; 
    shapeLayer.strokeColor = [[UIColor whiteColor] CGColor]; 
    shapeLayer.lineWidth = 1.5; 
    shapeLayer.fillColor = [[UIColor clearColor] CGColor]; 

    [self.view.layer addSublayer:shapeLayer];

一段时间，我需要动画的行有不同的Point后，但保持Center原样，但我不知道该怎么做。我的方法好吗？有没有更好的方法来做到这一点？

来源

2014-10-01 Shamy

可能重复[如何动画CAShapeLayer路径和填充颜色（http://stackoverflow.com/questions/15651717/how-to-animate-cashapelayer-path-and- fillcolor） – 2014-10-01 13:15:08

这是动画绘制的路径，而不是动画后，它已经绘制（这是我想要实现的）。虽然谢谢！：d – Shamy 2014-10-01 14:35:20

解决它：

CABasicAnimation *morph = [CABasicAnimation animationWithKeyPath:@"path"]; 
    morph.duration = 1.0; 
    UIBezierPath *path5 = [UIBezierPath bezierPath]; 
    [path5 moveToPoint:CGPointMake(P22.x+5, P22.y+5)]; 
    [path5 addLineToPoint:CGPointMake(P21.x,P21.y)]; 
    morph.fromValue = (id) path.CGPath; 
    morph.toValue = (id) path5.CGPath; 

    [shapeLayer addAnimation:morph forKey:nil]; 

    //next line to update the shapeLayer's new path 
    shapeLayer.path = path5.CGPath;

的

来源

2014-10-08 11:10:14 Shamy

如何在Objective C中绘制线条的动画？

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