@IBAction func addInformation(_ sender: UIBarButtonItem) {
// check rateHourly has value
if let editedRateHourly = rateHourly.text {
print("editedRateHourly condition is \(editedRateHourly)")
if editedRateHourly != ""{
print("not nil")
// check edit value is number?
let num = Int(editedRateHourly)
if num != nil {
print("is num")
// add to database
UserDefaults.standard.set(editedRateHourly, forKey: "\(findDate())")
UserDefaults.standard.synchronize()
// back to last viewController
navigationController?.popToRootViewController(animated: true)
}else{
print("not num")
print("error alert push!!")
popErrorAlert()
}
}else {
print("nil")
print("editedRateHourly condition is nil")
popErrorAlert()
}
}
}
@IBAction func cannelInformationPage(_ sender: UIBarButtonItem) {
navigationController?.popToRootViewController(animated: true)
}
我想创建一个新的简单编辑页面。对我来说有两个问题,当我完成编辑时 if-else 会检查条件是否正确,然后保存数据 popToRootViewControlle。当我完成编辑时,我点击“addInformation”BarButtonItem,我得到了 UI 错误。另一个错误是当我点击 editField 但我没有输入任何条件时。然后我点击“cannelInformationPage”UIBarButtonItem。它也会出错。