Xamarin Forms Controls / TimeSpan Picker

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Styling

TimeSpanPicker Styling

TimeSpan Picker control for Xamаrin provides the following Style properties for customizing its look:

  • SpinnerStyle(of type Style with target type telerikDataControls:RadSpinner): Defines the style applied to the spinner item and selected item interval.
  • SpinnerHeaderStyle(of type Style with target type Xamarin.Forms.Label): Specifies the style applied to the spinner header labels.
  • SelectionHighlightStyle(of type Style with target type telerikPrimitives:RadBorder): Specifies the style applied to the selection inside the popup.
  • PlaceholderLabelStyle(of type Style with target type Xamarin.Forms.Label): Defines the style applied to the placeholder label.
  • DisplayLabelStyle(of type Style with target type Xamarin.Forms.Label): Defines the style applied to the label which is visualized when time duration is selected.

In addition, RadTimeSpanPicker exposes properties for specifying its border style and background color, namely:

  • BackgroundColor(Xamarin.Forms.Color): Defines the background color of the picker.
  • BorderColor(Xamarin.Forms.Color): Defines the border color of the picker.
  • BorderThickness(Xamarin.Forms.Thickness): Specifies the border thickness of the picker. Default value is new Thickness(0,0,0,1).
  • CornerRadius(Xamarin.Forms.Thinckness): Specifies the corner radius of the picker.

Using the SelectorSettings property (of type Telerik.XamarinForms.Input.PickerPopupSelectorSettings) of the TimeSpanPicker you can modify the appearance of the dialog (popup). PickerPopupSelectorSettings class exposes the following Style properties:

  • PopupViewStyle(of type Style with target type telerikInput:PickerPopupContentView): Defines the popup view style.
  • HeaderStyle(of type Style with target type telerikInput:PickerPopupHeaderView): Defines the popup header style.
  • HeaderLabelStyle(of type Style with target type Xamarin.Forms.Label): Defines the popup header label style.
  • FooterStyle(of type Style with target type telerikInput:PickerPopupFooterView): Defines the popup footer style.
  • AcceptButtonStyle(of type Style with target type Xamarin.Forms.Button): Defines the Accept button style.
  • CancelButtonStyle(of type Style with target type Xamarin.Forms.Button): Defines the Cancel button style.

The SelectorSettings also provides the following properties for popup customization:

  • PopupOutsideBackgroundColor(Xamarin.Forms.Color): Defines the color outside of the popup.

  • IsPopupModal(bool): Defines a boolean value indicating if the popup should be closed when tapped outside of the popup.

    • When IsPopupModal="True" the UI behind the popup gets inactive and cannot be used until the popup is closed.
    • When IsPopupModal="False" the popup could be closed when clicking outside the popup. By default the value of the IsPopupModal is false.

  • HeaderLabelText(string): Specifies the text visualized in the popup header.

  • IsHeaderVisible(bool): Specifies whether the Popup header is currently visible. By default the valuse is True.
  • IsFooterVisible(bool): Specifies whether the Popup footer is currently visible. By default the valuse is True.
  • AcceptButtonText(string): Defines the text visualized for the accept button. By default the text is OK.
  • CancelButtonText(string): Defines the text visualized for the cancel button. By default the text is Cancel.

Namespaces

When defining some of these Styles you would need to include additional namespaces, so that the target types are properly resolved.

Using PopupViewStyle, HeaderStyle or FooterStyle you will need to add the following namespace:

xmlns:telerikInput="clr-namespace:Telerik.XamarinForms.Input;assembly=Telerik.XamarinForms.Input"

Using SelectionHighlightStyle, TabStripStyle you need to add the following namespace:

xmlns:telerikPrimitives="clr-namespace:Telerik.XamarinForms.Primitives;assembly=Telerik.XamarinForms.Primitives"

Using SpinnerStyle you need to add the following namespace:

xmlns:telerikDataControls="clr-namespace:Telerik.XamarinForms.DataControls;assembly=Telerik.XamarinForms.DataControls"

Example

Here is a sample example that shows how the styling properties are applied.

Let's have the following TimeSpan Picker definition:

<telerikInput:RadTimeSpanPicker SpinnerHeaderStyle="{StaticResource spinnerHeaderStyle}"
                                SpinnerStyle="{StaticResource spinnerStyle}"
                                SelectionHighlightStyle="{StaticResource selectionHighlightStyle}"
                                DisplayLabelStyle="{StaticResource displayLabelStyle}"
                                PlaceholderLabelStyle="{StaticResource placeholderLabelStyle}">
    <telerikInput:RadTimeSpanPicker.SelectorSettings>
        <telerikInput:PickerPopupSelectorSettings PopupOutsideBackgroundColor="#D9D9D9CC"
                                                  PopupViewStyle="{StaticResource popupViewStyle}"
                                                  HeaderStyle="{StaticResource headerStyle}"
                                                  HeaderLabelText="Select Duration"
                                                  HeaderLabelStyle="{StaticResource headerLabelStyle}"
                                                  FooterStyle="{StaticResource footerStyle}"
                                                  AcceptButtonStyle="{StaticResource acceptButtonStyle}"
                                                  CancelButtonStyle="{StaticResource cancelButtonStyle}"/>
    </telerikInput:RadTimeSpanPicker.SelectorSettings>
</telerikInput:RadTimeSpanPicker>

And here are how the styles are defined in the page resources.

Spinner Style

<Style TargetType="telerikDataControls:RadSpinner" x:Key="spinnerStyle">
    <Setter Property="ItemStyle">
        <Setter.Value>
            <Style TargetType="telerikDataControls:SpinnerItemView">
                <Setter Property="TextColor" Value="#797979" />
                <Setter Property="BackgroundColor" Value="#F2F2F2" />
                <Setter Property="CornerRadius" Value="10" />
                <Setter Property="Margin" Value="6, 4" />
            </Style>
        </Setter.Value>
    </Setter>
    <Setter Property="SelectedItemStyle">
        <Setter.Value>
            <Style TargetType="telerikDataControls:SpinnerItemView">
                <Setter Property="TextColor" Value="#00B5DC" />
                <Setter Property="BackgroundColor" Value="#E4F3F9" />
                <Setter Property="CornerRadius" Value="10" />
                <Setter Property="Margin" Value="6, 4" />
            </Style>
        </Setter.Value>
    </Setter>
</Style>

SpinnerHeader Style

<Style TargetType="Label" x:Key="spinnerHeaderStyle">
    <Setter Property="TextColor" Value="Black"/>
    <Setter Property="FontAttributes" Value="Bold"/>
    <Setter Property="HorizontalOptions" Value="FillAndExpand"/>
    <Setter Property="VerticalOptions" Value="FillAndExpand"/>
    <Setter Property="HorizontalTextAlignment" Value="Center"/>
    <Setter Property="VerticalTextAlignment" Value="Center"/>
</Style>

SelectionHighlight Style

<Style TargetType="telerikPrimitives:RadBorder" x:Key="selectionHighlightStyle">
    <Setter Property="BorderColor" Value="#00B5DC"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="Padding" Value="0,6,0,6"/>
    <Setter Property="HeightRequest" Value="40"/>
    <Setter Property="VerticalOptions" Value="Center"/>
    <Setter Property="BackgroundColor" Value="#F9F9F9"/>
</Style>

PlaceholderLabel Style

<Style TargetType="Label" x:Key="placeholderLabelStyle">
    <Setter Property="TextColor" Value="#1188FF"/>
    <Setter Property="VerticalTextAlignment" Value="Center"/>
    <Setter Property="HorizontalTextAlignment" Value="Center"/>
    <Setter Property="HeightRequest" Value="50"/>
</Style>

DisplayLabel Style

<Style TargetType="Label" x:Key="displayLabelStyle">
    <Setter Property="TextColor" Value="#1188FF"/>
    <Setter Property="VerticalTextAlignment" Value="Center"/>
    <Setter Property="HorizontalTextAlignment" Value="Center"/>
    <Setter Property="HeightRequest" Value="50"/>
</Style>

PopupView Style

<Style TargetType="telerikInput:PickerPopupContentView" x:Key="popupViewStyle">
    <Setter Property="BackgroundColor" Value="White"/>
    <Setter Property="WidthRequest" Value="270"/>
</Style>

Header Style

<Style TargetType="telerikInput:PickerPopupHeaderView" x:Key="headerStyle">
    <Setter Property="BackgroundColor" Value="#00B5DC"/>
    <Setter Property="HeightRequest" Value="60"/>
    <Setter Property="Margin" Value="0"/>
    <Setter Property="Padding" Value="0"/>
    <Setter Property="HorizontalOptions" Value="FillAndExpand"/>
    <Setter Property="VerticalOptions" Value="FillAndExpand"/>
</Style>

HeaderLabel Style

<Style TargetType="Label" x:Key="headerLabelStyle">
    <Setter Property="TextColor" Value="White"/>
    <Setter Property="HorizontalOptions" Value="Center"/>
    <Setter Property="VerticalOptions" Value="Center"/>
    <Setter Property="FontSize" Value="Title"/>
</Style>

Footer Style

<Style TargetType="telerikInput:PickerPopupFooterView" x:Key="footerStyle">
    <Setter Property="BackgroundColor" Value="#00B5DC"/>
</Style>

AcceptButton Style

<Style TargetType="Button" x:Key="acceptButtonStyle">
    <Setter Property="BackgroundColor" Value="Transparent"/>
    <Setter Property="Text" Value="Accept"/>
    <Setter Property="TextColor" Value="White"/>
</Style>

CancelButton Style

<Style TargetType="Button" x:Key="cancelButtonStyle">
    <Setter Property="BackgroundColor" Value="Transparent"/>
    <Setter Property="Text" Value="Reject"/>
    <Setter Property="TextColor" Value="White"/>
</Style>

Namespaces

In addition, add the following namespaces:

xmlns:telerikInput="clr-namespace:Telerik.XamarinForms.Input;assembly=Telerik.XamarinForms.Input"
xmlns:telerikDataControls="clr-namespace:Telerik.XamarinForms.DataControls;assembly=Telerik.XamarinForms.DataControls"
xmlns:telerikPrimitives="clr-namespace:Telerik.XamarinForms.Primitives;assembly=Telerik.XamarinForms.Primitives"

This is how the TimeSpan Picker control looks when the styles described above are applied:

TimeSpan Picker

A sample Styling example can be found in the TimeSpanPicker/Features folder of the SDK Samples Browser application.

See Also

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