Class

# MobileContainer

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Container

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Popover

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## Description

A <span class="title-ref">MobileContainer</span> is a way to create a group of controls that are treated as a single control. It is a great way to simplify complex screens. In addition, with <span class="title-ref">MobileContainer</span>, you can create reusable controls to include on multiple screens or even other MobileContainers.

## Properties

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| Name                                                     | Type                                                          | Read-Only | Shared |
|----------------------------------------------------------|---------------------------------------------------------------|-----------|--------|
| `AccessibilityHint<mobilecontainer.accessibilityhint>`   | `String</api/data_types/string>`                              |           |        |
| `AccessibilityLabel<mobilecontainer.accessibilitylabel>` | `String</api/data_types/string>`                              |           |        |
| `ControlCount<mobilecontainer.controlcount>`             | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Enabled<mobilecontainer.enabled>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Height<mobilecontainer.height>`                         | `Integer</api/data_types/integer>`                            | ✓         |        |
| `LastControlIndex<mobilecontainer.lastcontrolindex>`     | `Integer</api/data_types/integer>`                            |           |        |
| `Left<mobilecontainer.left>`                             | `Integer</api/data_types/integer>`                            | ✓         |        |
| `LockBottom<mobilecontainer.lockbottom>`                 | `Boolean</api/data_types/boolean>`                            |           |        |
| `LockLeft<mobilecontainer.lockleft>`                     | `Boolean</api/data_types/boolean>`                            |           |        |
| `LockRight<mobilecontainer.lockright>`                   | `Boolean</api/data_types/boolean>`                            |           |        |
| `LockTop<mobilecontainer.locktop>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Name<mobilecontainer.name>`                             | `String</api/data_types/string>`                              | ✓         |        |
| `Parent<mobilecontainer.parent>`                         | `MobileUIControl</api/user_interface/mobile/mobileuicontrol>` | ✓         |        |
| `TintColor<mobilecontainer.tintcolor>`                   | `ColorGroup</api/graphics/colorgroup>`                        |           |        |
| `Top<mobilecontainer.top>`                               | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Visible<mobilecontainer.visible>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Width<mobilecontainer.width>`                           | `Integer</api/data_types/integer>`                            | ✓         |        |

## Methods

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| Name                                                 | Parameters                                                                                                                                                          | Returns                                                       | Shared |
|------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------|--------|
| `AddConstraint<mobilecontainer.addconstraint>`       | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`, name As `String</api/data_types/string>` = ""                                                    |                                                               |        |
| `AddControl<mobilecontainer.addcontrol>`             | child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`                                                                                              |                                                               |        |
| `ClearFocus<mobilecontainer.clearfocus>`             |                                                                                                                                                                     |                                                               |        |
| `Constraint<mobilecontainer.constraint>`             | name As `String</api/data_types/string>`                                                                                                                            | `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`           |        |
| `ControlAt<mobilecontainer.controlat>`               | index As `Integer</api/data_types/integer>`                                                                                                                         | `MobileUIControl</api/user_interface/mobile/mobileuicontrol>` |        |
| `Controls<mobilecontainer.controls>`                 |                                                                                                                                                                     | `Iterable</api/language/iterable>`                            |        |
| `Handle<mobilecontainer.handle>`                     |                                                                                                                                                                     | `Ptr</api/data_types/additional_types/ptr>`                   |        |
| `Objects<mobilecontainer.objects>`                   |                                                                                                                                                                     | `Iterable</api/language/iterable>`                            |        |
| `Refresh<mobilecontainer.refresh>`                   |                                                                                                                                                                     |                                                               |        |
| `RemoveConstraint<mobilecontainer.removeconstraint>` | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`                                                                                                   |                                                               |        |
|                                                      | name As `String</api/data_types/string>`                                                                                                                            |                                                               |        |
| `RemoveControl<mobilecontainer.removecontrol>`       | child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`                                                                                              |                                                               |        |
| `SetFocus<mobilecontainer.setfocus>`                 |                                                                                                                                                                     |                                                               |        |
| `ShowPopover<mobilecontainer.showpopover>`           | parentControl As `MobileToolbarButton</api/user_interface/mobile/mobiletoolbarbutton>`, animated As `Boolean</api/data_types/boolean>` = `True</api/language/true>` |                                                               |        |
|                                                      | parent As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`, animated As `Boolean</api/data_types/boolean>` = `True</api/language/true>`                |                                                               |        |

## Events

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| Name                                                   | Parameters                                 | Returns |
|--------------------------------------------------------|--------------------------------------------|---------|
| `AppearanceChanged<mobilecontainer.appearancechanged>` | dark As `Boolean</api/data_types/boolean>` |         |
| `Closing<mobilecontainer.closing>`                     |                                            |         |
| `Opening<mobilecontainer.opening>`                     |                                            |         |

## Property descriptions

<div id="mobilecontainer.accessibilityhint">

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MobileContainer.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 class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for Android.
>
> </div>

<div id="mobilecontainer.accessibilitylabel">

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MobileContainer.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="mobilecontainer.controlcount">

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MobileContainer.ControlCount

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

> The number of child controls in the control.
>
> This property is read-only.
>
> <div class="important">
>
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> Important
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>
> This property is supported for iOS only.
>
> </div>

<div id="mobilecontainer.enabled">

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MobileContainer.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="mobilecontainer.height">

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MobileContainer.Height

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

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

<div id="mobilecontainer.lastcontrolindex">

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MobileContainer.LastControlIndex

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

> The index of the last `MobileControl</api/user_interface/mobile/mobilecontrol>` on the <span class="title-ref">MobileContainer</span>.

<div id="mobilecontainer.left">

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MobileContainer.Left

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

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

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MobileContainer.LockBottom

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

> Determines whether the bottom edge of the control should stay at a set distance from the bottom edge of the parent control, if there is one, or the owning screen.
>
> <div class="important">
>
> <div class="title">
>
> Important
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> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockBottom = True
> ```

<div id="mobilecontainer.lockleft">

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MobileContainer.LockLeft

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

> Determines whether the left edge of the control should stay at a set distance from the left edge of the parent control, if there is one, or the owning screen.
>
> LockLeft and Locktop default to `True</api/language/true>` when you add a new control to a screen. Existing controls will be altered only if LockRight and/or LockBottom are not set. *LockLeft* has no effect unless *LockRight* is `True</api/language/true>`.
>
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>
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>
> Important
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> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockLeft = True
> ```

<div id="mobilecontainer.lockright">

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MobileContainer.LockRight

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

> Determines whether the right edge of the control should stay at a set distance from the right edge of the parent control, if there is one, or the owning screen.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockRight = True
> ```

<div id="mobilecontainer.locktop">

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MobileContainer.LockTop

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

> Determines whether the top edge of the control should stay at a set distance from the top edge of the parent control, if there is one, or the owning screen.
>
> LockTop and LockLeft default to `True</api/language/true>` when you add a control to a screen. Existing controls will be altered only if LockRight and/or LockBottom are not set. *LockTop* has no effect unless *LockBottom* is `True</api/language/true>`.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockTop = True
> ```

<div id="mobilecontainer.name">

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MobileContainer.Name

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

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

<div id="mobilecontainer.parent">

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MobileContainer.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="mobilecontainer.tintcolor">

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MobileContainer.TintColor

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

> Changes a control's tint color.
>
> <div class="important">
>
> <div class="title">
>
> Important
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> </div>
>
> This is supported for iOS only.
>
> </div>
>
> 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="mobilecontainer.top">

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MobileContainer.Top

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

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

<div id="mobilecontainer.visible">

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MobileContainer.Visible

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

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

<div id="mobilecontainer.width">

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MobileContainer.Width

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

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

## Method descriptions

<div id="mobilecontainer.addconstraint">

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MobileContainer.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 class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobilecontainer.addcontrol">

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MobileContainer.AddControl

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

> Adds a *child* control to the control.

<div id="mobilecontainer.clearfocus">

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MobileContainer.ClearFocus

**ClearFocus**

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

<div id="mobilecontainer.constraint">

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MobileContainer.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.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>
>
> 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="mobilecontainer.controlat">

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MobileContainer.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="mobilecontainer.controls">

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MobileContainer.Controls

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

> Allows you to iterate through all the controls that have been added to this control.
>
> <div class="note">
>
> <div class="title">
>
> Note
>
> </div>
>
> This does not include non-control object instances. For that, use the `Objects<mobilecontainer.objects>` method.
>
> </div>

<div id="mobilecontainer.handle">

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MobileContainer.Handle

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

> The handle to the underlying native OS control.

<div id="mobilecontainer.objects">

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MobileContainer.Objects

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

> Allows you to iterate through all the non-control object instances on the container.
>
> <div class="note">
>
> <div class="title">
>
> Note
>
> </div>
>
> This does not include controls. For that, use the `Controls<mobilecontainer.controls>` method.
>
> </div>

<div id="mobilecontainer.refresh">

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MobileContainer.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="mobilecontainer.removeconstraint">

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MobileContainer.RemoveConstraint

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

> Removes a *constraint* from the control.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

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

> Removes the constraint with the *name* passed from the `Screen</api/user_interface/mobile/mobilescreen>`.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobilecontainer.removecontrol">

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MobileContainer.RemoveControl

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

> Removes the control from the control.

<div id="mobilecontainer.setfocus">

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MobileContainer.SetFocus

**SetFocus**

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

<div id="mobilecontainer.showpopover">

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Mobilecontainer.ShowPopover

**ShowPopover**(parentControl As `MobileToolbarButton</api/user_interface/mobile/mobiletoolbarbutton>`, animated As `Boolean</api/data_types/boolean>` = `True</api/language/true>`)

> Displays the container as a popover below the *parentControl*.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This method is not currently supported for Android.
>
> </div>

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**ShowPopover**(parentControl As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`, animated As `Boolean</api/data_types/boolean>` = `True</api/language/true>`)

> Displays the container as a popover on top of the *parentControl's* screen.
>
> The *animated* parameter is supported for iOS only.
>
> This example from a `button's Pressed</api/user_interface/mobile/mobilebutton>` event displays the container named *MyPopover*:
>
> ``` xojo
> Var c As New MyPopover
> c.ShowPopover(Me)
> ```
>
> <div class="note">
>
> <div class="title">
>
> Note
>
> </div>
>
> You may have to add constraints via code before calling this method so that the container will resize to fill the popover.
>
> </div>
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This method is not currently supported for Android.
>
> </div>

## Event descriptions

<div id="mobilecontainer.appearancechanged">

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MobileContainer.AppearanceChanged

**AppearanceChanged**(dark As `Boolean</api/data_types/boolean>`)

> Called when a user switches between Light and Dark mode.
>
> Use this event to update any graphics or other UI as needed.

<div id="mobilecontainer.closing">

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MobileContainer.Closing

**Closing**

> Called when the control's layout is closing.

<div id="mobilecontainer.opening">

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MobileContainer.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"
> ```

## Compatibility

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

<div class="seealso">

`MobileUIControl</api/user_interface/mobile/mobileuicontrol>` parent class; `MobileScreen</api/user_interface/mobile/mobilescreen>` class, `MobileScrollableArea</api/user_interface/mobile/mobilescrollablearea>` control

</div>