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Class

# iOSSlider

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Warning

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This item was deprecated in version 2020r2. Please use `MobileSlider</api/user_interface/mobile/mobileslider>` as a replacement.

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## Description

A control with a draggable slider than can be used to change a value.

## Properties

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| Name                                               | Type                                     | Read-Only | Shared |
|----------------------------------------------------|------------------------------------------|-----------|--------|
| `AccessibilityHint<iosslider.accessibilityhint>`   | `Text</api/deprecated/text>`             |           |        |
| `AccessibilityLabel<iosslider.accessibilitylabel>` | `Text</api/deprecated/text>`             |           |        |
| `Enabled<iosslider.enabled>`                       | `Boolean</api/data_types/boolean>`       |           |        |
| `Height<iosslider.height>`                         | `Double</api/data_types/double>`         | ✓         |        |
| `Left<iosslider.left>`                             | `Double</api/data_types/double>`         | ✓         |        |
| `MaxValue<iosslider.maxvalue>`                     | `Double</api/data_types/double>`         |           |        |
| `MinValue<iosslider.minvalue>`                     | `Double</api/data_types/double>`         |           |        |
| `Name<iosslider.name>`                             | `Text</api/deprecated/text>`             | ✓         |        |
| `Parent<iosslider.parent>`                         | `iOSControl</api/deprecated/ioscontrol>` | ✓         |        |
| `Top<iosslider.top>`                               | `Double</api/data_types/double>`         | ✓         |        |
| `Value<iosslider.value>`                           | `Double</api/data_types/double>`         |           |        |
| `Visible<iosslider.visible>`                       | `Boolean</api/data_types/boolean>`       |           |        |
| `Width<iosslider.width>`                           | `Double</api/data_types/double>`         | ✓         |        |

## Methods

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| Name                                           | Parameters                                                                                                                                   | Returns                                                   | Shared |
|------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------|--------|
| `AddConstraint<iosslider.addconstraint>`       | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`                                                                            |                                                           |        |
| `AddControl<iosslider.addcontrol>`             | child As `MobileControl</api/user_interface/mobile/mobilecontrol>`                                                                           |                                                           |        |
| `Control<iosslider.control>`                   | index As `Integer</api/data_types/integer>`                                                                                                  | `MobileControl</api/user_interface/mobile/mobilecontrol>` |        |
| `ControlCount<iosslider.controlcount>`         |                                                                                                                                              | `Integer</api/data_types/integer>`                        |        |
| `Handle<iosslider.handle>`                     |                                                                                                                                              | `Ptr</api/data_types/additional_types/ptr>`               |        |
| `Invalidate<iosslider.invalidate>`             |                                                                                                                                              |                                                           |        |
| `RemoveConstraint<iosslider.removeconstraint>` | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`                                                                            |                                                           |        |
| `RemoveControl<iosslider.removecontrol>`       | child As `MobileControl</api/user_interface/mobile/mobilecontrol>`                                                                           |                                                           |        |
| `SetMinCurrentMax<iosslider.setmincurrentmax>` | minValue As `Double</api/data_types/double>`, currentValue As `Double</api/data_types/double>`, maxValue As `Double</api/data_types/double>` |                                                           |        |
| `SetTintColor<iosslider.settintcolor>`         | value As `Color</api/data_types/color>`                                                                                                      |                                                           |        |

## Events

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| Name                                   | Parameters | Returns |
|----------------------------------------|------------|---------|
| `Close<iosslider.close>`               |            |         |
| `Open<iosslider.open>`                 |            |         |
| `ValueChanged<iosslider.valuechanged>` |            |         |

## Property descriptions

<div id="iosslider.accessibilityhint">

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iOSSlider.AccessibilityHint

**AccessibilityHint** As `Text</api/deprecated/text>`

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 view."
```

<div id="iosslider.accessibilitylabel">

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iOSSlider.AccessibilityLabel

**AccessibilityLabel** As `Text</api/deprecated/text>`

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="iosslider.enabled">

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iOSSlider.Enabled

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

Enables or disables the slider.

Disable a Slider:

``` xojo
MySlider.Enabled = False
```

<div id="iosslider.height">

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iOSSlider.Height

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

The height of the control.

This property is read-only.

<div id="iosslider.left">

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iOSSlider.Left

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

The left position of the control.

This property is read-only.

<div id="iosslider.maxvalue">

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iOSSlider.MaxValue

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

The maximum value of the slider. The default value is 100.

Change the maximum slider value:

``` xojo
MySlider.MaxValue = 50
```

<div id="iosslider.minvalue">

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iOSSlider.MinValue

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

The minimum value of the slider. The default value is 0.

Change the minimum slider value:

``` xojo
MySlider.MinValue = -50
```

<div id="iosslider.name">

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iOSSlider.Name

**Name** As `Text</api/deprecated/text>`

The name of the control. This can only be set in the Inspector. Use the name to refer to the control.

This property is read-only.

<div id="iosslider.parent">

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iOSSlider.Parent

**Parent** As `iOSControl</api/deprecated/ioscontrol>`

Indicates the control's parent object, if it has one. If there is no parent, this is Nil.

This property is read-only.

<div id="iosslider.top">

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iOSSlider.Top

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

The top position of the control.

This property is read-only.

<div id="iosslider.value">

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iOSSlider.Value

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

The current value of the slider.

Set this value to move the slider position. If Value is greater than MaxValue, the MaxValue is used. If Value is less than MinValue, then MinValue is used.

Set the initial slider value:

``` xojo
MySlider.Value = 25
```

<div id="iosslider.visible">

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iOSSlider.Visible

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

Indicates whether the control is visible.

Make a button invisible:

``` xojo
Button1.Visible = False
```

<div id="iosslider.width">

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iOSSlider.Width

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

The width of the control.

This property is read-only.

## Method descriptions

<div id="iosslider.addconstraint">

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iOSSlider.AddConstraint

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

Adds a constraint to the control. This constraint is used by child controls that have been added to this control.

<div id="iosslider.addcontrol">

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iOSSlider.AddControl

**AddControl**(child As `MobileControl</api/user_interface/mobile/mobilecontrol>`)

Adds a child control to the control.

<div id="iosslider.control">

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iOSSlider.Control

**Control**(index As `Integer</api/data_types/integer>`) As `MobileControl</api/user_interface/mobile/mobilecontrol>`

Gets the child control at the specified index.

<div id="iosslider.controlcount">

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iOSSlider.ControlCount

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

The number of child controls in the control.

<div id="iosslider.handle">

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iOSSlider.Handle

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

The handle is used to get a reference to the control for interfacing directly with the iOS API.

<div id="iosslider.invalidate">

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iOSSlider.Invalidate

**Invalidate**

Marks the control so that it will be redrawn during the next event loop.

Call Invalidate to force a Canvas to redraw itself:

``` xojo
Canvas1.Invalidate
```

<div id="iosslider.removeconstraint">

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iOSSlider.RemoveConstraint

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

Removes a constraint from the control.

<div id="iosslider.removecontrol">

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iOSSlider.RemoveControl

**RemoveControl**(child As `MobileControl</api/user_interface/mobile/mobilecontrol>`)

Removes the control from the control.

<div id="iosslider.setmincurrentmax">

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iOSSlider.SetMinCurrentMax

**SetMinCurrentMax**(minValue As `Double</api/data_types/double>`, currentValue As `Double</api/data_types/double>`, maxValue As `Double</api/data_types/double>`)

For convenience, sets all the properties at one time.

Sets values for the Slider:

``` xojo
MySlider.SetMinCurrentMax(-50, 25, 50)
```

<div id="iosslider.settintcolor">

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iOSSlider.SetTintColor

**SetTintColor**(value As `Color</api/data_types/color>`)

Changes a control's tint color. This varies by control and for some controls may not do anything. For example, with an `MobileTextField</api/user_interface/mobile/mobiletextfield>` this changes the cursor color.

## Event descriptions

<div id="iosslider.close">

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iOSSlider.Close

**Close**

Called when the control is removed from its container, such as a view.

<div id="iosslider.open">

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iOSSlider.Open

**Open**

Called after the control is created. This is where you typically put initialization code.

Set label text in Open event:

``` xojo
Me.Text = "Hello"
```

<div id="iosslider.valuechanged">

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iOSSlider.ValueChanged

**ValueChanged**

Called when CurrentValue is changed.

Update an iOSLabel with the value of the Slider as it changes:

``` xojo
MyTextField.Text = Me.Value.ToText
```

## Compatibility

iOS projects on the iOS operating system.