自定义视图的 AddTarget UIView 不起作用

Question

I have a custom view class as follows

class AudioPlayerView: UIView {
@IBOutlet weak var playAudio: UIButton!
@IBOutlet weak var audioSlider: UISlider!
@IBOutlet weak var deleteAudio: UIButton!
@IBOutlet weak var audioURL: UILabel!

override init(frame: CGRect) {
    super.init(frame: frame)
    self.isUserInteractionEnabled = true
    commonInit()
}
required init?(coder: NSCoder) {
    super.init(coder: coder)
}
func commonInit(){
    let viewFromXIB = Bundle.main.loadNibNamed("AudioPlayerView", owner: self, options: nil)![0] as! UIView
    viewFromXIB.frame = self.bounds
    addSubview(viewFromXIB)
}

}

I am adding the above view programmatically in a scroll view of view controller and setting up targets for buttons as follows

func addRecorderdAudioPlayerUI(){
    audioRecorderControlUIView.isHidden = true
    let audioPlayerView = AudioPlayerView()
    audioPlayerView.frame = CGRect(x: 0, y: 0, width: 398, height: 50)
    
    audioPlayerView.audioSlider.addTarget(NoteViewController.self, action: #selector(changeAudioTime), for: .valueChanged)
    audioPlayerView.playAudio.addTarget(NoteViewController.self, action: #selector(playPauseAudioBtnCLicked), for: .touchUpInside)
    audioPlayerView.deleteAudio.addTarget(NoteViewController.self, action: #selector(deleteAudioBtnCLicked), for: .touchUpInside)
    audioPlayerView.audioURL.text = recordingsURLsToSave.last
    
    
    audioContainerScrollView.addSubview(audioPlayerView)
    scrollViewContentWidth += audioPlayerView.frame.width
    audioContainerScrollView.contentSize = CGSize(width: scrollViewContentWidth, height: 50)
}

I am able to add the view but the.touchUpInside targets are not working.

Answer 1

You need to

1- replace NoteViewController.self with self

audioPlayerView.audioSlider.addTarget(self, action: #selector(changeAudioTime), for: .valueChanged)
audioPlayerView.playAudio.addTarget(self, action: #selector(playPauseAudioBtnCLicked), for: .touchUpInside)
audioPlayerView.deleteAudio.addTarget(self, action: #selector(deleteAudioBtnCLicked), for: .touchUpInside)

2- Add this method

class func getInstance() -> AudioPlayerView {
  let viewFromXIB = Bundle.main.loadNibNamed("AudioPlayerView", owner: self, options: nil)![0] as! AudioPlayerView   
  return  viewFromXIB 
}

Then replace

let audioPlayerView = AudioPlayerView()

with

let audioPlayerView = AudioPlayerView.getInstance()