Commands
TimePicker Commands
RadTime Picker exposes the following commands you can use to programmatically manipulate displaying the popup as well as clearing the selected time:
- ToggleCommand(ICommand): Allows you to show/hide the popup used for selecting a time value.
- ClearCommand(ICommand): Allows you to clear the selected time.
Example for ToggleCommand and ClearCommand
<StackLayout>
<Button Text="Toggle Popup" Command="{Binding Source={x:Reference timePicker}, Path=ToggleCommand}"/>
<Button Text="Clear Selected Time" Command="{Binding Source={x:Reference timePicker}, Path=ClearCommand}"/>
<telerikInput:RadTimePicker x:Name="timePicker" />
</StackLayout>
also you need to add the following namespace:
xmlns:telerikInput="clr-namespace:Telerik.XamarinForms.Input;assembly=Telerik.XamarinForms.Input"
PopupSelector Commands
Through the popup users can pick a time. The time value should be confirmed or rejected through the OK and Cancel buttons placed on the popup.
RadTimePicker allows you to add a custom logic for the Accept and Cancel commands which are executed when OK and Cancel buttons, respectively, are pressed.
- AcceptCommand(ICommand): Defines the command which confirms the current selection of the picker and closes the popup. AcceptCommandParameter can be used to pass a parameter to the command execute method.
- CancelCommand(ICommand): Defines the command which rejects the current selection of the picker and closes the popup. CancelCommandParameter can be used to pass a parameter to the command execute method.
The Accept and Cancel commands can be applied using the SelectorSettings property of RadTimePicker. In addition, you can pass command parameters through the AcceptCommandParameter and CancelCommandParameter properties of the TimePicker SelectorSettings.
Here is a quick example on how they could be set:
Example for AcceptCommand and CancelCommand
<telerikInput:RadTimePicker x:Name="timePicker">
<telerikInput:RadTimePicker.SelectorSettings>
<telerikInput:PickerPopupSelectorSettings AcceptCommand="{Binding Accept}"
AcceptCommandParameter="{Binding Time, Source={x:Reference timePicker}}"
CancelCommand="{Binding Cancel}"
CancelCommandParameter="{Binding Time, Source={x:Reference timePicker}}"/>
</telerikInput:RadTimePicker.SelectorSettings>
</telerikInput:RadTimePicker>
Let's add a sample ViewModel class:
public class ViewModel
{
public ICommand Accept { get; set; }
public ICommand Cancel { get; set; }
public ViewModel()
{
this.Accept = new Command(this.OnAccept);
this.Cancel = new Command(this.OnCancel);
}
private void OnAccept(object param)
{
Application.Current.MainPage.DisplayAlert("Time selected", "New time: " + (TimeSpan)param, "OK");
// implement your custom logic here
}
private void OnCancel(object param)
{
var message = param != null ? "Current time: " + (TimeSpan)param : "Currently no time is selected";
Application.Current.MainPage.DisplayAlert("Time Selection Canceled", message, "OK");
// implement your custom logic here
}
}