CAShapeLayer LineCap not proper at end of CABasic Animation - iphone

Question

I have implemented a basic line drawing animation for a progress bar.The line has a round cap edge.When I animated the line drawing the beginning of line is having a rounded cap but in the end its a square. below is the code I am using am i missing anything??
CAShape Layer Code :
CAShapeLayer *lineLayer = [[CAShapeLayer alloc] init];
[lineLayer setFrame: CGRectMake(0,
0,
wifisyncView.popUpView.frame.size.width,
wifisyncView.popUpView.frame.size.height)];
[lineLayer setPath: [linePath CGPath]];
lineLayer.lineWidth = 9.0f;
lineLayer.strokeEnd = 9.0f;
lineLayer.fillColor = [[UIColor orangeColor] CGColor];
lineLayer.lineCap = kCALineCapRound;
[lineLayer setStrokeColor:[[UIColor orangeColor] CGColor]];
[lineLayer setMasksToBounds:YES];
lineLayer.cornerRadius = 30.0f;
CABASIC Animation code :
CABasicAnimation *drawAnimation = [CABasicAnimation animationWithKeyPath:#"strokeEnd"];
drawAnimation.duration = 5.0; // "animate over 5 seconds "
drawAnimation.repeatCount = 1.0; // Animate only once..
drawAnimation.removedOnCompletion = NO;// Remain stroked after the animation..
drawAnimation.fillMode = kCAFillModeForwards;
// Animate from no part of the stroke being drawn to the entire stroke being drawn
drawAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
drawAnimation.toValue = [NSNumber numberWithFloat:1.0f];
// Experiment with timing to get the appearence to look the way you want
drawAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
drawAnimation.delegate = self;
// Add the animation to the circle
[lineLayer addAnimation:drawAnimation forKey:#"drawLineAnimation"];
Image Attached :

Answer 1

I dont find any mistakes in your code. I created a new project and pasted your code to viewDidLoad and is working fine. Code for your reference.
UIBezierPath *linePath = [UIBezierPath bezierPath];
[linePath moveToPoint:CGPointMake(100, 100)];
[linePath addLineToPoint:CGPointMake(500, 100)];
CAShapeLayer *lineLayer = [[CAShapeLayer alloc] init];
[lineLayer setFrame:self.view.bounds];
[lineLayer setPath: [linePath CGPath]];
lineLayer.lineWidth = 9.0f;
lineLayer.strokeEnd = 9.0f;
lineLayer.fillColor = [[UIColor orangeColor] CGColor];
lineLayer.lineCap = kCALineCapRound;
[lineLayer setStrokeColor:[[UIColor orangeColor] CGColor]];
[lineLayer setMasksToBounds:YES];
lineLayer.cornerRadius = 30.0f;
[self.view.layer addSublayer:lineLayer];
CABasicAnimation *drawAnimation = [CABasicAnimation animationWithKeyPath:#"strokeEnd"];
drawAnimation.duration = 5.0; // "animate over 5 seconds "
drawAnimation.repeatCount = 1.0; // Animate only once..
drawAnimation.removedOnCompletion = NO;// Remain stroked after the animation..
drawAnimation.fillMode = kCAFillModeForwards;
// Animate from no part of the stroke being drawn to the entire stroke being drawn
drawAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
drawAnimation.toValue = [NSNumber numberWithFloat:1.0f];
// Experiment with timing to get the appearence to look the way you want
drawAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
drawAnimation.delegate = self;
// Add the animation to the circle
[lineLayer addAnimation:drawAnimation forKey:#"drawLineAnimation"];
I think you should try changing
[lineLayer setFrame: CGRectMake(0,
0,
wifisyncView.popUpView.frame.size.width,
wifisyncView.popUpView.frame.size.height)];
to
[lineLayer setFrame: CGRectMake(0,
0,
wifisyncView.popUpView.bounds.size.width,
wifisyncView.popUpView.bounds.size.height)];