collectionview-uibutton-uisegmentedcontrol-listen-to-click's Introduction

CollectionView-UIButton-UISegmentedControl-Listen-to-click

Swift 3, CollectionView

override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
    let header = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: headerId, for: indexPath) as! AppDetailHeader
    header.app = app

    header.segmentedControl.addTarget(self, action: #selector(segmentedControlAction(sender:)), for: UIControlEvents.valueChanged)
    
    return header
}

func segmentedControlAction(sender: UISegmentedControl) {
    
    switch sender.selectedSegmentIndex {
    case 0:
        segmentControl = 0
        collectionView?.reloadData()
    case 1:
        segmentControl = 1
        collectionView?.reloadData()
    case 2:
        segmentControl = 2
        collectionView?.reloadData()
    default:
        break
    }
}


let segmentedControl: UISegmentedControl = {
    let sc = UISegmentedControl(items: ["Details","Review","Related"])
    sc.tintColor = UIColor.darkGray
    sc.selectedSegmentIndex = 0
    return sc
}()

    let myButton: UIButton = {
    let button = UIButton(type: .system)
    button.setTitle("Ok", for: UIControlState())
    button.layer.borderColor = UIColor(red: 0, green: 129/255, blue: 250/255, alpha: 1).cgColor
    button.layer.borderWidth = 1
    button.layer.cornerRadius = 5
    button.titleLabel?.font = UIFont.boldSystemFont(ofSize: 14)
    return button
}()

override func setupViews(){
    super.setupViews()

    addSubview(myButton)
    addSubview(segmentedControl)
    
    addConstraintsWithFormat("H:|-40-[v0]-40-|", views: segmentedControl)
    addConstraintsWithFormat("V:[v0(34)]-8-|", views: segmentedControl)
    
    addConstraintsWithFormat("H:[v0(60)]-14-|", views: myButton)
    addConstraintsWithFormat("V:[v0(32)]-56-|", views: myButton)
}

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