在 viewDidLoad 中设置通知

Set notification in viewDidLoad

final override func viewDidLoad() {
    super.viewDidLoad()

    // add notification observers
    NotificationCenter.default.addObserver(self, selector: #selector(didBecomeActive), name: NSNotification.Name.UIApplicationDidBecomeActive, object: nil)
}

创建方法 didBecomeActive

Create method didBecomeActive

func didBecomeActive() {
    if let indexPath = tableView.indexPathForSelectedRow {
        deselectRow(at: indexPath, animated: true)
    }
}

UIKit 文档

• UIApplicationDidBecomeActive
• UITableView - indexPathForSelectedRow
• UITableView - deselectRow