iOS addLayer: how to layout right?












0












$begingroup$


When adding some dash line to the view of a viewController, by add sublayer.



Here is the code:




class ViewController: UIViewController {
@IBOutlet weak var tmpLabel: UILabel!

override func viewDidLoad() {
super.viewDidLoad()
tmpLabel.layer.borderColor = UIColor.red.cgColor;
tmpLabel.layer.borderWidth = 2
tmpLabel.addDashedBorders(padding: 50, y: tmpLabel.bounds.size.height * 0.5)
// ......
}}


extension UIView {


func addDashedBorders( padding x: CGFloat, y : CGFloat) {
//Create a CAShapeLayer
let shapeLayer = CAShapeLayer()
shapeLayer.strokeColor = UIColor.red.cgColor
shapeLayer.lineWidth = 2
shapeLayer.lineDashPattern = [2,3]

let path = CGMutablePath()
path.addLines(between: [CGPoint(x: x, y: y),
CGPoint(x: bounds.size.width * 0.5 - 50, y: y)])
path.addLines(between: [CGPoint(x: bounds.size.width * 0.5 + 50, y: y),
CGPoint(x: bounds.size.width - x, y: y)])
shapeLayer.path = path
layer.addSublayer(shapeLayer)
}
}



The following image is in iPhoneX



000



The code is hard-coded, and not good.



111



I want to add the sub shape layer to the view , right beneath the label.



there is the code




class ViewController: UIViewController {
@IBOutlet weak var tmpLabel: UILabel!

override func viewDidLoad() {
super.viewDidLoad()
tmpLabel.layer.borderColor = UIColor.red.cgColor;
tmpLabel.layer.borderWidth = 2
view.addDashedBorder(padding: 50, y: tmpLabel.frame.origin.y)
//...
}}


extension UIView {
func addDashedBorder( padding x: CGFloat, y : CGFloat) {

let shapeLayer = CAShapeLayer()
shapeLayer.strokeColor = UIColor.red.cgColor
shapeLayer.lineWidth = 2
shapeLayer.lineDashPattern = [2,3]

let path = CGMutablePath()
path.addLines(between: [CGPoint(x: x, y: y),
CGPoint(x: bounds.size.width - x, y: y)])
shapeLayer.path = path
layer.addSublayer(shapeLayer)
}
}





I tested in iPhoneX, there is a distance.



I tried view.safeAreaInsets, it is all zero.



What do I miss?









share









$endgroup$

















    0












    $begingroup$


    When adding some dash line to the view of a viewController, by add sublayer.



    Here is the code:




    class ViewController: UIViewController {
    @IBOutlet weak var tmpLabel: UILabel!

    override func viewDidLoad() {
    super.viewDidLoad()
    tmpLabel.layer.borderColor = UIColor.red.cgColor;
    tmpLabel.layer.borderWidth = 2
    tmpLabel.addDashedBorders(padding: 50, y: tmpLabel.bounds.size.height * 0.5)
    // ......
    }}


    extension UIView {


    func addDashedBorders( padding x: CGFloat, y : CGFloat) {
    //Create a CAShapeLayer
    let shapeLayer = CAShapeLayer()
    shapeLayer.strokeColor = UIColor.red.cgColor
    shapeLayer.lineWidth = 2
    shapeLayer.lineDashPattern = [2,3]

    let path = CGMutablePath()
    path.addLines(between: [CGPoint(x: x, y: y),
    CGPoint(x: bounds.size.width * 0.5 - 50, y: y)])
    path.addLines(between: [CGPoint(x: bounds.size.width * 0.5 + 50, y: y),
    CGPoint(x: bounds.size.width - x, y: y)])
    shapeLayer.path = path
    layer.addSublayer(shapeLayer)
    }
    }



    The following image is in iPhoneX



    000



    The code is hard-coded, and not good.



    111



    I want to add the sub shape layer to the view , right beneath the label.



    there is the code




    class ViewController: UIViewController {
    @IBOutlet weak var tmpLabel: UILabel!

    override func viewDidLoad() {
    super.viewDidLoad()
    tmpLabel.layer.borderColor = UIColor.red.cgColor;
    tmpLabel.layer.borderWidth = 2
    view.addDashedBorder(padding: 50, y: tmpLabel.frame.origin.y)
    //...
    }}


    extension UIView {
    func addDashedBorder( padding x: CGFloat, y : CGFloat) {

    let shapeLayer = CAShapeLayer()
    shapeLayer.strokeColor = UIColor.red.cgColor
    shapeLayer.lineWidth = 2
    shapeLayer.lineDashPattern = [2,3]

    let path = CGMutablePath()
    path.addLines(between: [CGPoint(x: x, y: y),
    CGPoint(x: bounds.size.width - x, y: y)])
    shapeLayer.path = path
    layer.addSublayer(shapeLayer)
    }
    }





    I tested in iPhoneX, there is a distance.



    I tried view.safeAreaInsets, it is all zero.



    What do I miss?









    share









    $endgroup$















      0












      0








      0





      $begingroup$


      When adding some dash line to the view of a viewController, by add sublayer.



      Here is the code:




      class ViewController: UIViewController {
      @IBOutlet weak var tmpLabel: UILabel!

      override func viewDidLoad() {
      super.viewDidLoad()
      tmpLabel.layer.borderColor = UIColor.red.cgColor;
      tmpLabel.layer.borderWidth = 2
      tmpLabel.addDashedBorders(padding: 50, y: tmpLabel.bounds.size.height * 0.5)
      // ......
      }}


      extension UIView {


      func addDashedBorders( padding x: CGFloat, y : CGFloat) {
      //Create a CAShapeLayer
      let shapeLayer = CAShapeLayer()
      shapeLayer.strokeColor = UIColor.red.cgColor
      shapeLayer.lineWidth = 2
      shapeLayer.lineDashPattern = [2,3]

      let path = CGMutablePath()
      path.addLines(between: [CGPoint(x: x, y: y),
      CGPoint(x: bounds.size.width * 0.5 - 50, y: y)])
      path.addLines(between: [CGPoint(x: bounds.size.width * 0.5 + 50, y: y),
      CGPoint(x: bounds.size.width - x, y: y)])
      shapeLayer.path = path
      layer.addSublayer(shapeLayer)
      }
      }



      The following image is in iPhoneX



      000



      The code is hard-coded, and not good.



      111



      I want to add the sub shape layer to the view , right beneath the label.



      there is the code




      class ViewController: UIViewController {
      @IBOutlet weak var tmpLabel: UILabel!

      override func viewDidLoad() {
      super.viewDidLoad()
      tmpLabel.layer.borderColor = UIColor.red.cgColor;
      tmpLabel.layer.borderWidth = 2
      view.addDashedBorder(padding: 50, y: tmpLabel.frame.origin.y)
      //...
      }}


      extension UIView {
      func addDashedBorder( padding x: CGFloat, y : CGFloat) {

      let shapeLayer = CAShapeLayer()
      shapeLayer.strokeColor = UIColor.red.cgColor
      shapeLayer.lineWidth = 2
      shapeLayer.lineDashPattern = [2,3]

      let path = CGMutablePath()
      path.addLines(between: [CGPoint(x: x, y: y),
      CGPoint(x: bounds.size.width - x, y: y)])
      shapeLayer.path = path
      layer.addSublayer(shapeLayer)
      }
      }





      I tested in iPhoneX, there is a distance.



      I tried view.safeAreaInsets, it is all zero.



      What do I miss?









      share









      $endgroup$




      When adding some dash line to the view of a viewController, by add sublayer.



      Here is the code:




      class ViewController: UIViewController {
      @IBOutlet weak var tmpLabel: UILabel!

      override func viewDidLoad() {
      super.viewDidLoad()
      tmpLabel.layer.borderColor = UIColor.red.cgColor;
      tmpLabel.layer.borderWidth = 2
      tmpLabel.addDashedBorders(padding: 50, y: tmpLabel.bounds.size.height * 0.5)
      // ......
      }}


      extension UIView {


      func addDashedBorders( padding x: CGFloat, y : CGFloat) {
      //Create a CAShapeLayer
      let shapeLayer = CAShapeLayer()
      shapeLayer.strokeColor = UIColor.red.cgColor
      shapeLayer.lineWidth = 2
      shapeLayer.lineDashPattern = [2,3]

      let path = CGMutablePath()
      path.addLines(between: [CGPoint(x: x, y: y),
      CGPoint(x: bounds.size.width * 0.5 - 50, y: y)])
      path.addLines(between: [CGPoint(x: bounds.size.width * 0.5 + 50, y: y),
      CGPoint(x: bounds.size.width - x, y: y)])
      shapeLayer.path = path
      layer.addSublayer(shapeLayer)
      }
      }



      The following image is in iPhoneX



      000



      The code is hard-coded, and not good.



      111



      I want to add the sub shape layer to the view , right beneath the label.



      there is the code




      class ViewController: UIViewController {
      @IBOutlet weak var tmpLabel: UILabel!

      override func viewDidLoad() {
      super.viewDidLoad()
      tmpLabel.layer.borderColor = UIColor.red.cgColor;
      tmpLabel.layer.borderWidth = 2
      view.addDashedBorder(padding: 50, y: tmpLabel.frame.origin.y)
      //...
      }}


      extension UIView {
      func addDashedBorder( padding x: CGFloat, y : CGFloat) {

      let shapeLayer = CAShapeLayer()
      shapeLayer.strokeColor = UIColor.red.cgColor
      shapeLayer.lineWidth = 2
      shapeLayer.lineDashPattern = [2,3]

      let path = CGMutablePath()
      path.addLines(between: [CGPoint(x: x, y: y),
      CGPoint(x: bounds.size.width - x, y: y)])
      shapeLayer.path = path
      layer.addSublayer(shapeLayer)
      }
      }





      I tested in iPhoneX, there is a distance.



      I tried view.safeAreaInsets, it is all zero.



      What do I miss?







      swift ios layout





      share












      share










      share



      share










      asked 3 mins ago









      black_pearlblack_pearl

      1187




      1187






















          0






          active

          oldest

          votes











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "196"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: false,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fcodereview.stackexchange.com%2fquestions%2f214894%2fios-addlayer-how-to-layout-right%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Code Review Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fcodereview.stackexchange.com%2fquestions%2f214894%2fios-addlayer-how-to-layout-right%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          404 Error Contact Form 7 ajax form submitting

          How to know if a Active Directory user can login interactively

          Refactoring coordinates for Minecraft Pi buildings written in Python