在我的代码中,我有一个UITextField,当用户点击时打开一个UIDatePicker,使用户能够轻松有效地滚动到他们的出生日期。显然,我们不希望UIDatePicker像目前那样向上滚动到2015年及以上。因为它是出生日期输入字段,我还需要能够将条目限制为16年+。我该怎么做呢?
class SignUpViewController: UIViewController, UITextFieldDelegate {
var datePicker:UIDatePicker!
@IBOutlet weak var dateTextField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
// UI DATE PICKER SETUP
var customView:UIView = UIView(frame: CGRectMake(0, 100, 320, 160))
customView.backgroundColor = UIColor.clearColor()
datePicker = UIDatePicker(frame: CGRectMake(0, 0, 320, 160))
datePicker.datePickerMode = UIDatePickerMode.Date
customView.addSubview(datePicker)
dateTextField.inputView = customView
var doneButton:UIButton = UIButton (frame: CGRectMake(100, 100, 100, 44))
doneButton.setTitle("Done", forState: UIControlState.Normal)
doneButton.addTarget(self, action: "datePickerSelected", forControlEvents: UIControlEvents.TouchUpInside)
doneButton.backgroundColor = UIColor .grayColor()
dateTextField.inputAccessoryView = doneButton
答案 0 :(得分:31)
您可以使用dateByAddingUnit并从当前日期减去16年来设置datePicker的最大日期,如下所示:
datePicker.maximumDate = NSCalendar.currentCalendar().dateByAddingUnit(.Year, value: -16, toDate: NSDate(), options: [])
Xcode 8 beta 6•Swift 3
datePicker.maximumDate = Calendar.current.date(byAdding: .year, value: -16, to: Date())
答案 1 :(得分:-2)
UIDatePicker
有maximumDate
您可以设置。只需将模式设置为"日期"在IB中添加:
datePicker.maximumDate = NSDate(timeIntervalSinceNow: -504911232)
-504911232表示今天之前的16(会计闰年)