Swift @IBDesignable - @IBInspectable多个变量

Question

I am trying to create a custom class for UILabel so I can see the result from the Storyboard. I need to change the text attributes in order to create an outline label.

With the code I have so far I can manage to do this however I can only add one variable.

If I had multiple var I get the following errors.

> 'var' declarations with multiple variables cannot have explicit
> getters/setters 'var' cannot appear nested inside another 'var' or
> 'let' pattern Getter/setter can only be defined for a single variable

How can I use multiple variables? CODE:

import UIKit

@IBDesignable
class CustomUILabel: UILabel {
    @IBInspectable var outlineWidth: CGFloat = 1.0, var outlineColor = UIColor.whiteColor() {
        didSet {


                let strokeTextAttributes = [
                    NSStrokeColorAttributeName : outlineColor,
                    NSStrokeWidthAttributeName : -1 * outlineWidth,
                    ]

                self.attributedText = NSAttributedString(string: self.text ?? "", attributes: strokeTextAttributes)

        }
    }



}

Answer 1

As I said in the comment - you need to have each variable in separate lines. This means that you need to have didSet declared for both of them. Something like this :

import UIKit

@IBDesignable
class CustomUILabel: UILabel {
    @IBInspectable var outlineWidth: CGFloat = 1.0 {
        didSet {
            self.setAttributes(self.outlineColor, outlineWidth: self.outlineWidth)
        }
    }

    @IBInspectable var outlineColor = UIColor.whiteColor() {
        didSet {
            self.setAttributes(self.outlineColor, outlineWidth: self.outlineWidth)
        }
    }

    func setAttributes(outlineColor:UIColor, outlineWidth: CGFloat) {
        let strokeTextAttributes = [
            NSStrokeColorAttributeName : outlineColor,
            NSStrokeWidthAttributeName : -1 * outlineWidth,
            ]

        self.attributedText = NSAttributedString(string: self.text ?? "", attributes: strokeTextAttributes)
    }

}