I am having some difficulty figuring out how to properly update my existing custom renderer I have for my DatePicker on iOS to display the DatePicker with a different preferred style as is mentioned in this article here (albeit it is for swift) https://medium.com/better-programming/introducing-swifts-new-modern-date-picker-37bb5e0a106
My renderer is as follows:
public class BorderlessDatePickerRenderer : DatePickerRenderer
{
public override void LayoutSubviews()
{
base.LayoutSubviews();
var element = Element as BorderlessDatePicker;
Control.BorderStyle = UITextBorderStyle.None;
if (element.Date.Year == 1900) {
Control.Text = "";
}
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
var element = Element as BorderlessDatePicker;
if (Control != null && element.Date.Year == 1900) {
Control.Text = "";
}
}
The BorderlessDatePicker
itself is just an empty class that extends the DatePicker Xamarin.Forms control. The root of my woes is that I am not sure how to properly set a PreferredDatePickerStyle on my Control object given that Control is a UITextField under the hood instead of a UIDatePicker. In essence what I would like to do is instead of displaying the Date picker using the compact
style that seems to be default for iOS 14, I would like for it to be displayed as wheels
instead by being to do something like:
PreferredDatePickerStyle = UIDatePickerStyle.Wheels;
After some more researching, and browsing the xamarin github, I've come across this solution:
protected override void OnElementChanged(ElementChangedEventArgs<DatePicker> e)
{
base.OnElementChanged(e);
if(e.NewElement != null && this.Control != null)
{
try
{
if (UIDevice.CurrentDevice.CheckSystemVersion(14, 0))
{
UIDatePicker picker = (UIDatePicker)Control.InputView;
picker.PreferredDatePickerStyle = UIDatePickerStyle.Wheels;
}
} catch (Exception ex)
{
Log.Error(ex, "Failed to set PreferredDatePickerStyle to be UIDatePickerStyle.Wheels for iOS 14.0+");
}
}
}