CABasicAnimation 划线动画

CGFloat animateDuration = ;

    UIBezierPath *bezierPath = [[UIBezierPath alloc] init];
    CGPoint centerFromP = noAnimateView.center;
    [bezierPath moveToPoint:centerFromP];
    CGPoint centerEndP = endView.center;
    [bezierPath addLineToPoint:centerEndP];

    CAShapeLayer *layer = [CAShapeLayer layer];
    layer.lineWidth = ;
    layer.strokeColor = [UIColor blackColor].CGColor;
    layer.fillColor = [UIColor clearColor].CGColor;
    layer.path = bezierPath.CGPath;
    layer.lineCap = kCALineCapRound;
//    [layer setLineDashPattern:[NSArray arrayWithObjects:[NSNumber numberWithInt:15], [NSNumber numberWithInt:10],nil]];

    //create the keyframe animation
    CABasicAnimation *animation = [CABasicAnimation animation];
    animation.keyPath = @"strokeEnd";
    animation.fromValue = [NSNumber numberWithInteger:];
    animation.toValue = [NSNumber numberWithInteger:];
    animation.duration = animateDuration;
    animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    [layer addAnimation:animation forKey:nil];