private Task <IDialogAnswer <DateTime> > ShowDateTimeDialog(string caption, UIDatePickerMode mode, DateTime current,
IDialogButton positive, IDialogButton negative)
{
var tcs = new TaskCompletionSource <IDialogAnswer <DateTime> >();
var version = new Version(UIDevice.CurrentDevice.SystemVersion);
if (version.Major >= 7)
{
var picker = new DatePicker();
picker.Title = caption;
picker.NativeDatePicker.Mode = mode;
picker.NativeDatePicker.Date = current;
picker.DoneTitle = positive.Caption;
picker.CancelTitle = negative.Caption;
picker.Click += (sender, e) =>
{
if (tcs.Task.Status < TaskStatus.RanToCompletion)
{
NSDate dateTime = (sender as DatePicker).NativeDatePicker.Date;
DateTime result = dateTime != null
? System.DateTime.SpecifyKind(dateTime, DateTimeKind.Utc).ToLocalTime()
: System.DateTime.MinValue;
if (e.ButtonIndex == 0)
{
tcs.SetResult(new DialogAnswer <DateTime>(true, result));
}
else if (e.ButtonIndex == 1)
{
tcs.SetResult(new DialogAnswer <DateTime>(false, result));
}
}
};
picker.Show(_context.MainController.View,
(ScreenController)_context.MainController.VisibleViewController);
}
else
{
var alertView = new UIAlertView(caption, "", null, positive.Caption, negative.Caption);
alertView.Show();
_alertViews.Add(alertView);
var datePicker = new UIDatePicker();
datePicker.Frame = new RectangleF(10, alertView.Bounds.Size.Height, 270, 150);
datePicker.Mode = UIDatePickerMode.Date;
datePicker.Date = current;
alertView.AddSubview(datePicker);
var timePicker = new UIDatePicker();
timePicker.Frame = new RectangleF(10, alertView.Bounds.Size.Height + 150 + 20, 270, 150);
timePicker.Mode = UIDatePickerMode.Time;
timePicker.Date = current;
alertView.AddSubview(timePicker);
alertView.Clicked += (sender, e) =>
{
DateTime date = System.DateTime.SpecifyKind(datePicker.Date, DateTimeKind.Unspecified);
DateTime time = System.DateTime.SpecifyKind(timePicker.Date, DateTimeKind.Utc).ToLocalTime();
var result = new DateTime(date.Year, date.Month, date.Day, time.Hour, time.Minute, time.Second);
if (e.ButtonIndex == 0)
{
tcs.SetResult(new DialogAnswer <DateTime>(true, result));
}
else if (e.ButtonIndex == 1)
{
tcs.SetResult(new DialogAnswer <DateTime>(false, result));
}
var av = (UIAlertView)sender;
_alertViews.Remove(av);
av.Dispose();
};
alertView.Bounds = new RectangleF(0, 0, 290, alertView.Bounds.Size.Height + 150 + 150 + 20 + 30);
}
return(tcs.Task);
}
public void ShowDateTimeDialog(string caption, UIDatePickerMode mode, DateTime current, DialogButton <DateTime> positive, DialogButton <DateTime> negative)
{
Version version = new Version(UIDevice.CurrentDevice.SystemVersion);
if (version.Major >= 7)
{
DatePicker picker = new DatePicker();
picker.Title = caption;
picker.NativeDatePicker.Mode = mode;
picker.NativeDatePicker.Date = current;
picker.DoneTitle = positive.Caption;
picker.CancelTitle = negative.Caption;
picker.Click += (object sender, UIButtonEventArgs e) => {
var dateTime = (sender as DatePicker).NativeDatePicker.Date;
DateTime result = dateTime != null?System.DateTime.SpecifyKind(dateTime, DateTimeKind.Utc).ToLocalTime() : System.DateTime.MinValue;
if (e.ButtonIndex == 0)
{
positive.Execute(result);
}
else if (e.ButtonIndex == 1)
{
negative.Execute(result);
}
};
picker.Show(_context.MainController.View, (ScreenController)_context.MainController.VisibleViewController);
}
else
{
var alertView = new UIAlertView(caption, "", null, positive.Caption, negative.Caption);
alertView.Show();
_alertViews.Add(alertView);
UIDatePicker datePicker = new UIDatePicker();
datePicker.Frame = new System.Drawing.RectangleF(10, alertView.Bounds.Size.Height, 270, 150);
datePicker.Mode = UIDatePickerMode.Date;
datePicker.Date = current;
alertView.AddSubview(datePicker);
UIDatePicker timePicker = new UIDatePicker();
timePicker.Frame = new System.Drawing.RectangleF(10, alertView.Bounds.Size.Height + 150 + 20, 270, 150);
timePicker.Mode = UIDatePickerMode.Time;
timePicker.Date = current;
alertView.AddSubview(timePicker);
alertView.Clicked += (object sender, UIButtonEventArgs e) => {
DateTime date = System.DateTime.SpecifyKind(datePicker.Date, DateTimeKind.Unspecified);
DateTime time = System.DateTime.SpecifyKind(timePicker.Date, DateTimeKind.Utc).ToLocalTime();
DateTime result = new DateTime(date.Year, date.Month, date.Day, time.Hour, time.Minute, time.Second);
if (e.ButtonIndex == 0)
{
positive.Execute(result);
}
else if (e.ButtonIndex == 1)
{
negative.Execute(result);
}
var av = (UIAlertView)sender;
_alertViews.Remove(av);
av.Dispose();
};
alertView.Bounds = new System.Drawing.RectangleF(0, 0, 290, alertView.Bounds.Size.Height + 150 + 150 + 20 + 30);
}
}