如何知道是否按下了UIBarButtonItem？

Question

I have tried numerous options for this code to work but I don't find a proper way. I know that this method works with UIButtons but with UIBarButtonItems it seems is different.

@IBOutlet weak var stopOutlet: UIBarButtonItem!

@IBAction func stop(sender: AnyObject) {

    if stopOutlet.selected {

        player.stop()

    } else {

        player.play()

        do {
            try player = AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: audioPath))

        } catch {
            print("Unable to play the file. Please try another song")
        }
    }
}

The line of code that does not work is the following

if stopOutlet.selected

Is there any boolean that works with UIBarButtonItems???

Im just starting to learn swift and Xcode so sorry if the question is lame.

Answer 1

You need to maintain some external state which tracks what the last button press did, or better infer it from the the state of the audioPlayer. This state can also be used to drive the text the button displays (play/pause)