#swtws

EmptyVie.swift

final class HogeViewController: UIViewContoller {
  private lazy var emptyView: UIView = {
    let view = UIView()
    self.view.addSubview(view)
    view.snp_makeConstraints { $0.edges.equalToSuperview() }

    let label = UILabel()
    label.textAlignment = .center
    label.text = "No data"
    view.addSubview(label)
    label.snp_makeConstraints { $0.center.width.equalToSuperview() }
    return view
  }()

  override func viewDidLoad() {
    super.viewDidLoad()
    // リクエスト部分は擬似コードです
    Session.shard.request() { [weak self] response in
      // 以下の最初の参照時に初めてemptyViewが初期化される
      emptyView.hidden = (response.count > 0)
    }
  }
}