uibezierpath

Despite looking over more than 3 post (made in 2015) about this problem, non have solved mine. When ever I run, a simple, code to draw a line using UIBezierPath the program would return me this: : CGContextSetStrokeColorWithColor: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable. : CGContextSetFillColorWithColor: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable. : CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT

The unusual bottom corners of an iPhoneX are Apple's new (2017) "continuous corners for iPhoneX" . It is trivial for any experienced iOS programmer to approximate the curve, but: Does anyone know exactly how to achieve these, exactly as Apple does? Even if it's a private call, it would be good to know. It does seem bizarre that Apple have not explained this. Please note that it's trivial to "approximate" the curve: To repeat, it is trivial for any experienced iOS programmer to approximate the curve. The question being asked here is specifically how to do Apple actually do it? Please do not

I have an instance of UIBezierPath and I want to change the color of the stroke to something other than black. Does anyone know how to do this in Swift? With Swift 5, UIColor has a setStroke() method. setStroke() has the following declaration: func setStroke() Sets the color of subsequent stroke operations to the color that the receiver represents. Therefore, you can use setStroke() like this: strokeColor.setStroke() // where strokeColor is a `UIColor` instance The Playground code below shows how to use setStroke() alongside UIBezierPath in order to draw a circle with a green fill color and a

I have a strange question. Even though I did read a lot of tutorials on how to do this, the final result only shows the bezier line, not any shadow whatsoever. My code is pretty simple : let borderLine = UIBezierPath() borderLine.moveToPoint(CGPoint(x:0, y: y! - 1)) borderLine.addLineToPoint(CGPoint(x: x!, y: y! - 1)) borderLine.lineWidth = 2 UIColor.blackColor().setStroke() borderLine.stroke() let shadowLayer = CAShapeLayer() shadowLayer.shadowOpacity = 1 shadowLayer.shadowOffset = CGSize(width: 0,height: 1) shadowLayer.shadowColor = UIColor.redColor().CGColor shadowLayer.shadowRadius = 1

I would like to create a UIBezierPath with 10px rounded corners and with gradient fill. How can I acheive this effect? Here's an image of what I want to do: As you can see, this square has: 2px black border 10px rounded corners red to green linear gradient fill How can I do this programatically without using pattern image color ? Here's how I create the path: UIBezierPath *border = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:10.0f]; [border setLineWidth:2]; [[UIColor blackColor] setStroke]; [border stroke]; [[UIColor redColor] setFill]; <-- what should I put here? [border

This question continues from a previous answer . I have the following CAShapeLayer : - (CAShapeLayer *)gaugeCircleLayer { if (_gaugeCircleLayer == nil) { _gaugeCircleLayer = [CAShapeLayer layer]; _gaugeCircleLayer.lineWidth = self.gaugeWidth; _gaugeCircleLayer.fillColor = [UIColor clearColor].CGColor; _gaugeCircleLayer.strokeColor = self.gaugeTintColor.CGColor; _gaugeCircleLayer.strokeStart = 0.0f; _gaugeCircleLayer.strokeEnd = self.value; _gaugeCircleLayer.lineCap = kCALineCapRound; _gaugeCircleLayer.path = [self insideCirclePath].CGPath; CAShapeLayer *cap = [CAShapeLayer layer]; cap

I'm trying to create a bezier path like the instagram triangle in the picture below, however I must be doing something wrong. The Bezier path does not show! - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. } -(void)viewDidLayoutSubviews{ [super viewDidLayoutSubviews]; [self drawTriangle]; } - (IBAction)closeButton:(UIButton *)sender { [self dismissViewControllerAnimated:YES completion:nil]; } - (void)drawTriangle{ UIBezierPath* trianglePath = [UIBezierPath bezierPath]; [trianglePath moveToPoint:CGPointMake(self.signUpButton.center.x, self