ios - 准备 segue 函数不加载新值

Question

自上次调用 segue 以来，我的 UIButton 类的 statValue 属性已更新，但 segue 仍发送旧的原始值。有没有办法刷新 prepare 函数(如下)，以便它发送新值？

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "StatDetailSegue" {
        if let destinationVC = segue.destination as? StatDetailViewController,
            let index = (sender as? StatButton)?.buttonIndex,
            let sendVal = (sender as? StatButton)?.buttonValue,
            let sendUnit = (sender as? StatButton)?.buttonUnit,
            let sendTitle = (sender as? StatButton)?.detailTitle {
            destinationVC.statID = index
            destinationVC.statValue = sendVal
            destinationVC.statUnit = sendUnit
            destinationVC.statTitle = sendTitle
            print("Destination STATID: \(destinationVC.statID)")
            print("Destination value: \(destinationVC.statValue)")
        }
    }
}

Answer 1

检查你的 StatButton 如果你在 Storyboard中使用你的按钮，那么你的按钮应该继承自 StatButton 而不是 UIButton 否则你的代码看起来不错.