Class

# iOSCountdownPicker

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

## Description

A countdown timer control that lets the user choose hours and minutes.

## Properties

<div class="rst-class">

table-centered_columns_3_and_4

</div>

| Name                                                        | Type                                                          | Read-Only | Shared |
|-------------------------------------------------------------|---------------------------------------------------------------|-----------|--------|
| `AccessibilityHint<ioscountdownpicker.accessibilityhint>`   | `String</api/data_types/string>`                              |           |        |
| `AccessibilityLabel<ioscountdownpicker.accessibilitylabel>` | `String</api/data_types/string>`                              |           |        |
| `ControlCount<ioscountdownpicker.controlcount>`             | `Integer</api/data_types/integer>`                            |           |        |
| `CountdownDuration<ioscountdownpicker.countdownduration>`   | `Double</api/data_types/double>`                              |           |        |
| `Enabled<ioscountdownpicker.enabled>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Height<ioscountdownpicker.height>`                         | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Left<ioscountdownpicker.left>`                             | `Integer</api/data_types/integer>`                            | ✓         |        |
| `MinuteInterval<ioscountdownpicker.minuteinterval>`         | `Integer</api/data_types/integer>`                            |           |        |
| `Name<ioscountdownpicker.name>`                             | `String</api/data_types/string>`                              | ✓         |        |
| `Parent<ioscountdownpicker.parent>`                         | `MobileUIControl</api/user_interface/mobile/mobileuicontrol>` | ✓         |        |
| `TintColor<ioscountdownpicker.tintcolor>`                   | `ColorGroup</api/graphics/colorgroup>`                        |           |        |
| `Top<ioscountdownpicker.top>`                               | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Visible<ioscountdownpicker.visible>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Width<ioscountdownpicker.width>`                           | `Integer</api/data_types/integer>`                            | ✓         |        |

## Methods

<div class="rst-class">

table-centered_column_4

</div>

| Name                                                    | Parameters                                                                                                                                                | Returns                                                       | Shared |
|---------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------|--------|
| `AddConstraint<ioscountdownpicker.addconstraint>`       | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`, name As `String</api/data_types/string>` = ""                                          |                                                               |        |
| `AddControl<ioscountdownpicker.addcontrol>`             | child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`, isBeingAdded As `Boolean</api/data_types/boolean>` = `False</api/language/false>` |                                                               |        |
| `ClearFocus<ioscountdownpicker.clearfocus>`             |                                                                                                                                                           |                                                               |        |
| `Constraint<ioscountdownpicker.constraint>`             | name As `String</api/data_types/string>`                                                                                                                  | `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`           |        |
| `ControlAt<ioscountdownpicker.controlat>`               | index As `Integer</api/data_types/integer>`                                                                                                               | `MobileUIControl</api/user_interface/mobile/mobileuicontrol>` |        |
| `Controls<ioscountdownpicker.controls>`                 |                                                                                                                                                           | `Iterable</api/language/iterable>`                            |        |
| `Handle<ioscountdownpicker.handle>`                     |                                                                                                                                                           | `Ptr</api/data_types/additional_types/ptr>`                   |        |
| `Refresh<ioscountdownpicker.refresh>`                   |                                                                                                                                                           |                                                               |        |
| `RemoveConstraint<ioscountdownpicker.removeconstraint>` | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`                                                                                         |                                                               |        |
|                                                         | name As `String</api/data_types/string>`                                                                                                                  |                                                               |        |
| `RemoveControl<ioscountdownpicker.removecontrol>`       | child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`                                                                                    |                                                               |        |
| `SetFocus<ioscountdownpicker.setfocus>`                 |                                                                                                                                                           |                                                               |        |

## Events

<div class="rst-class">

table-centered_column_4

</div>

| Name                                            | Parameters                                   | Returns |
|-------------------------------------------------|----------------------------------------------|---------|
| `Closing<ioscountdownpicker.closing>`           |                                              |         |
| `Opening<ioscountdownpicker.opening>`           |                                              |         |
| `ValueChanged<ioscountdownpicker.valuechanged>` | duration As `Double</api/data_types/double>` |         |

## Property descriptions

<div id="ioscountdownpicker.accessibilityhint">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.AccessibilityHint

**AccessibilityHint** As `String</api/data_types/string>`

> The accessibility hint is a longer description that is read aloud when VoiceOver is enabled.
>
> ``` xojo
> Me.AccessibilityHint = "Click to calculate the value and display the next screen."
> ```

<div id="ioscountdownpicker.accessibilitylabel">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.AccessibilityLabel

**AccessibilityLabel** As `String</api/data_types/string>`

> The accessibility label of of a control is a short name that is read aloud when VoiceOver is enabled.
>
> ``` xojo
> Me.AccessibilityLabel = "Calculate the value."
> ```

<div id="ioscountdownpicker.controlcount">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.ControlCount

**ControlCount** As `Integer</api/data_types/integer>`

> The number of child controls in the control.

<div id="ioscountdownpicker.countdownduration">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.CountdownDuration

**CountdownDuration** As `Double</api/data_types/double>`

> The amount of time (in minutes) the control is displaying.

<div id="ioscountdownpicker.enabled">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Enabled

**Enabled** As `Boolean</api/data_types/boolean>`

> Indicates whether the control is enabled or disabled.
>
> Disable the button:
>
> ``` xojo
> Button1.Enabled = False
> ```

<div id="ioscountdownpicker.height">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Height

**Height** As `Integer</api/data_types/integer>`

> The height of the control.
>
> This property is read-only.

<div id="ioscountdownpicker.left">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Left

**Left** As `Integer</api/data_types/integer>`

> The left position of the control.
>
> This property is read-only.

<div id="ioscountdownpicker.minuteinterval">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.MinuteInterval

**MinuteInterval** As `Integer</api/data_types/integer>`

> The interval between minutes displayed.

<div id="ioscountdownpicker.name">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Name

**Name** As `String</api/data_types/string>`

> The name of the control.
>
> This property is read-only.

<div id="ioscountdownpicker.parent">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Parent

**Parent** As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`

> The parent (sometimes called a "Super") class of the control.
>
> This property is read-only.

<div id="ioscountdownpicker.tintcolor">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.TintColor

**TintColor** As `ColorGroup</api/graphics/colorgroup>`

> Changes a control's tint color.
>
> On iOS, the following controls support TintColor:
>
> | Enum        | Description                                                                  |
> |-------------|------------------------------------------------------------------------------|
> | PopupMenu   | The background color will be drawn in the TintColor.                         |
> | ProgressBar | The area indicating the value of the control will be drawn in the TintColor. |
> | Slider      | The area indicating the value of the control will be drawn in the TintColor. |
> | TextArea    | The cursor and text highlight color will be drawn in the TintColor.          |
> | TextField   | The cursor and text highlight color will be drawn in the TintColor.          |

<div id="ioscountdownpicker.top">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Top

**Top** As `Integer</api/data_types/integer>`

> The top position of the control.
>
> This property is read-only.

<div id="ioscountdownpicker.visible">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Visible

**Visible** As `Boolean</api/data_types/boolean>`

> Indicates whether the control is visible.
>
> Make a button invisible:
>
> ``` xojo
> Button1.Visible = False
> ```

<div id="ioscountdownpicker.width">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Width

**Width** As `Integer</api/data_types/integer>`

> The width of the control.
>
> This property is read-only.

## Method descriptions

<div id="ioscountdownpicker.addconstraint">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.AddConstraint

**AddConstraint**(constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`, name As `String</api/data_types/string>` = "")

> Adds a constraint to the control. The optional *name* parameter can be used to `remove a constraint<mobileuicontrol.removeconstraint>` that was added via code.
>
> This constraint is used by child controls that have been added to this control.

<div id="ioscountdownpicker.addcontrol">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.AddControl

**AddControl**(child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`, isBeingAdded As `Boolean</api/data_types/boolean>` = `False</api/language/false>`)

> Adds a child control to the control. When the value of *isBeingAdded* is `True</api/language/true>`, the Opening event is triggered for the child control being added.

<div id="ioscountdownpicker.clearfocus">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.ClearFocus

**ClearFocus**

> Removes the focus from the control.
>
> ``` xojo
> TextField1.ClearFocus
> ```

<div id="ioscountdownpicker.constraint">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Constraint

**Constraint**(name As `String</api/data_types/string>`) As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`

> Gets a reference to a named constraint so that you can modify its settings in code.
>
> Change an existing (and named) constraint of a control on the Screen:
>
> ``` xojo
> ' "TAWidth" is a width constraint for a TextField that has been given
> ' a name in the auto-layout Inspector properties.
> Var c As iOSLayoutConstraint = Self.Constraint("TAWidth")
> c.Offset = 200
> ```

<div id="ioscountdownpicker.controlat">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.ControlAt

**ControlAt**(index As `Integer</api/data_types/integer>`) As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`

> Gets the child control at the specified *index*.

<div id="ioscountdownpicker.controls">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Controls

**Controls** As `Iterable</api/language/iterable>`

> Allows you to iterate through all the controls that have been added to this control.

<div id="ioscountdownpicker.handle">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Handle

**Handle** As `Ptr</api/data_types/additional_types/ptr>`

> The handle to the underlying native OS control.

<div id="ioscountdownpicker.refresh">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Refresh

**Refresh**

> Marks the control so that it will be redrawn during the next event loop.
>
> Call Refresh to force a Canvas to redraw itself:
>
> ``` xojo
> Canvas1.Refresh
> ```

<div id="ioscountdownpicker.removeconstraint">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.RemoveConstraint

**RemoveConstraint**(constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`)

> Removes a constraint from the control.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

**RemoveConstraint**(name As `String</api/data_types/string>`)

> Removes the constraint with the *name* passed from the `Screen</api/user_interface/mobile/mobilescreen>`.

<div id="ioscountdownpicker.removecontrol">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.RemoveControl

**RemoveControl**(child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`)

> Removes the control from the control.

<div id="ioscountdownpicker.setfocus">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.SetFocus

**SetFocus**

> Sets the focus to the control.
>
> ``` xojo
> TextField1.SetFocus
> ```

## Event descriptions

<div id="ioscountdownpicker.closing">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Closing

**Closing**

> Called when the control's layout is closing.

<div id="ioscountdownpicker.opening">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.Opening

**Opening**

> Called when the control's layout is opening.
>
> This is where you typically put initialization code.
>
> This example in the Opening event of a label sets its text to "Hello":
>
> ``` xojo
> Me.Text = "Hello"
> ```

<div id="ioscountdownpicker.valuechanged">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

iOSCountdownPicker.ValueChanged

**ValueChanged**(duration As `Double</api/data_types/double>`)

> The value displayed has changed.

## Notes

This control only provides a user interface. It's not a timer. Use the `Timer</api/language/timer>` control to create an actual timer.

## Compatibility

|                       |        |
|-----------------------|--------|
| **Project Types**     | Mobile |
| **Operating Systems** | iOS    |

<div class="seealso">

`MobileUIControl</api/user_interface/mobile/mobileuicontrol>` parent class; `MobileDateTimePicker</api/user_interface/mobile/mobiledatetimepicker>` control.

</div>