Hidden status of WKInterfaceButton in WatchKit

Question

Is there a way to check the current hidden status of WKInterfaceButton in WatchKit?

Answer 1

It looks like you cannot do that. But you can store your own variable with state and use it.

Below you can check definition of button's parent class.

public class WKInterfaceObject : NSObject {

    public func setHidden(hidden: Bool)
    public func setAlpha(alpha: CGFloat)

    @available(watchOS 2.0, *)
    public func setHorizontalAlignment(horizontalAlignment: WKInterfaceObjectHorizontalAlignment)
    @available(watchOS 2.0, *)
    public func setVerticalAlignment(verticalAlignment: WKInterfaceObjectVerticalAlignment)

    public func setWidth(width: CGFloat)
    public func setHeight(height: CGFloat)
    @available(watchOS 2.0, *)
    public func setRelativeWidth(width: CGFloat, withAdjustment adjustment: CGFloat)
    @available(watchOS 2.0, *)
    public func setRelativeHeight(height: CGFloat, withAdjustment adjustment: CGFloat)

    @available(watchOS 2.0, *)
    public func sizeToFitWidth()
    @available(watchOS 2.0, *)
    public func sizeToFitHeight()

    public var interfaceProperty: String { get } // same as controller's property name
}

Answer 2

The WKInterfaceButton class have a method inherited from WKInterfaceObject class entitled setHidden: that you can use to show/hide the button and with an auxiliar variable you can set programmatically the status of the WKInterfaceButton.

Something like the following example:

class InterfaceController: WKInterfaceController {

   @IBOutlet var button: WKInterfaceButton!     

   var buttonIsHidden: Bool!

   override func awakeWithContext(context: AnyObject?) {
      self.changeStatusOfButton(true)
   }

   private func changeStatusOfButton(status: Bool) {

      // set programmatically the status of the button to hide/show 
      self.activityButton.setHidden(status)

      // save the current status
      self.buttonIsHidden = status
   }

   private func showButtonAgain() {
       self.changeStatusOfButton(false)
   }
}

And whenever you want to know if the button is hidden/show you only need to check the variable buttonIsHidden.

I hope this help you.