UIBarItem Class

Definition

Base class for items added to the bars at the bottom of the screen.

[Foundation.Register("UIBarItem", true)]
public abstract class UIBarItem : Foundation.NSObject, Foundation.INSCoding, IDisposable, UIKit.IUIAccessibilityIdentification, UIKit.IUIAppearance
type UIBarItem = class
    inherit NSObject
    interface INSCoding
    interface INativeObject
    interface IDisposable
    interface IUIAccessibilityIdentification
    interface IUIAppearance
Inheritance
UIBarItem
Derived
Attributes
Implements

Remarks

Items that appear in the bar at the bottom of the screen act like UIButtons.

Constructors

UIBarItem()

Default constructor that initializes a new instance of this class with no parameters.

UIBarItem(IntPtr)

A constructor used when creating managed representations of unmanaged objects; Called by the runtime.

UIBarItem(NSCoder)

A constructor that initializes the object from the data stored in the unarchiver object.

UIBarItem(NSObjectFlag)

Constructor to call on derived classes to skip initialization and merely allocate the object.

Properties

AccessibilityActivationPoint

Gets or sets the screen coordinates of the activation point for this IUIAccessibilityIdentification element.

AccessibilityAttributedHint
AccessibilityAttributedLabel
AccessibilityAttributedValue
AccessibilityElementsHidden

Gets or sets whether accessibility elements contained in this IUIAccessibilityIdentification element are hidden.

AccessibilityFrame

Gets or sets the screen coordinates of the frame of this IUIAccessibilityIdentification element.

AccessibilityHint

Gets or sets a localized string that describes the result of an action.

AccessibilityIdentifier

Gets or sets an identifier that identifies this IUIAccessibilityIdentification element.

AccessibilityLabel

Gets or sets a localized string to identify this IUIAccessibilityIdentification element.

AccessibilityLanguage

Gets or sets the language for the AccessibilityLabel, AccessibilityValue, and AccessibilityHint of this IUIAccessibilityIdentification element.

AccessibilityNavigationStyle

Gets or sets the navigation style.

AccessibilityPath

Specifies screen coordinates for the path of an element that is used to highlight the element.

AccessibilityTraits

Gets or sets the accessibility traits that best characterize this IUIAccessibilityIdentification element.

AccessibilityValue

Specifies a localized string that contains the value of this IUIAccessibilityIdentification element.

AccessibilityViewIsModal

Gets or sets whether VoiceOver ignores elements in sibling views of this image object.

AnnouncementDidFinishNotification

Notification constant for AnnouncementDidFinish

AnnouncementNotification

Gets the notification posted by an application that an announcement requires assistive technology.

Appearance

Strongly-typed property that returns the UIAppearance class for this class.

AssistiveTechnologyKey

The string "UIAccessibilityAssistiveTechnologyKey" which can be used to distinguish accessibility notifications.

AssistiveTouchStatusDidChangeNotification

Notification constant for AssistiveTouchStatusDidChange

BoldTextStatusDidChangeNotification

Notification constant for BoldTextStatusDidChange

Class (Inherited from NSObject)
ClassHandle

The handle for this class.

ClosedCaptioningStatusDidChangeNotification

Notification constant for ClosedCaptioningStatusDidChange

DarkerSystemColorsStatusDidChangeNotification

Notification constant for DarkerSystemColorsStatusDidChange

DebugDescription

A developer-meaningful description of this object.

(Inherited from NSObject)
Description

Description of the object, the Objective-C version of ToString.

(Inherited from NSObject)
ElementFocusedNotification

Notification constant for ElementFocused

Enabled

Whether this UIBarItem is enabled.

FocusedElementKey

A string constant used by accessibility APIs (see FocusedElement(String)) to identify the focused element.

GrayscaleStatusDidChangeNotification

Notification constant for GrayscaleStatusDidChange

GuidedAccessStatusDidChangeNotification

Notification constant for GuidedAccessStatusDidChange

Handle

Handle (pointer) to the unmanaged object representation.

(Inherited from NSObject)
HearingDevicePairedEarDidChangeNotification

Notification constant for HearingDevicePairedEarDidChange

Image

The image used to represent this UIBarItem.

ImageInsets

The inset (or outset) for each edge.

InvertColorsStatusDidChangeNotification

Notification constant for InvertColorsStatusDidChange

IsAccessibilityElement

Gets or sets whether this item is an accessibility object that an assistive app can access.

IsDirectBinding (Inherited from NSObject)
IsProxy (Inherited from NSObject)
LandscapeImagePhone

The image to use to represent the item in landscape when using the iPhone appearance idiom.

LandscapeImagePhoneInsets

The inset (or outset) for each edge in landscape orientation when using the iPhone appearance idiom.

LargeContentSizeImage

Gets or sets the UIImage to be used for visually impaired users.

LargeContentSizeImageInsets

Gets or sets the UIEdgeInsets when displaying the s.

LayoutChangedNotification

Gets the notification posted by an application that the layout of a screen has changed.

MonoAudioStatusDidChangeNotification

Notification constant for MonoAudioStatusDidChange

NotificationSwitchControlIdentifier

Notification constant for NotificationSwitchContr

NotificationVoiceOverIdentifier

Notification constant for NotificationVoiceOv

PageScrolledNotification

Gets the notification posted by an application that a scroll action has finished.

PauseAssistiveTechnologyNotification

Pauses assistive technology notifications.

ReduceMotionStatusDidChangeNotification

Notification constant for ReduceMotionStatusDidChange

ReduceTransparencyStatusDidChangeNotification

Notification constant for ReduceTransparencyStatusDidChange

ResumeAssistiveTechnologyNotification

Resumes assistive technology notifications.

RetainCount

Returns the current Objective-C retain count for the object.

(Inherited from NSObject)
ScreenChangedNotification

Gets the notification posted by an application that a new view appears that includes a major portion of the screen.

Self (Inherited from NSObject)
ShakeToUndoDidChangeNotification

Notification constant for ShakeToUndoDidChange

ShouldGroupAccessibilityChildren

Gets or sets whether VoiceOver groups elements that are children of this object regardless of their positions.

SpeakScreenStatusDidChangeNotification

Notification constant for SpeakScreenStatusDidChange

SpeakSelectionStatusDidChangeNotification

Notification constant for SpeakSelectionStatusDidChange

SpeechAttributeIpaNotation
SpeechAttributeLanguage

Gets a BCP-47 language code.

SpeechAttributePitch

Gets the value from 0.0 to 2.0 that determines the pitch for a spoken string.

SpeechAttributePunctuation

Gets a value to be interpreted as a bool that determines whether the punctuation in a string is pronounced.

SpeechAttributeQueueAnnouncement
Superclass (Inherited from NSObject)
SuperHandle

Handle used to represent the methods in the base class for this NSObject.

(Inherited from NSObject)
SwitchControlStatusDidChangeNotification

Notification constant for SwitchControlStatusDidChange

Tag

A developer-meaningful integer that can be used to identify specific UIBarItem's within the application.

TextAttributeCustom
TextAttributeHeadingLevel
Title

The title displayed on this UIBarItem.

TraitAdjustable

Gets a trait that allows continuous adjustment of an accessibility element through a range of values.

TraitAllowsDirectInteraction

Gets a trait that allows direct touch interaction for users.

TraitButton

Gets a trait that indicates that this IUIAccessibilityIdentification element should be treated as a button.

TraitCausesPageTurn

Gets a trait that indicates that this IUIAccessibilityIdentification element should turn the page when VoiceOver finishes that page.

TraitHeader

Gets a trait that indicates that this IUIAccessibilityIdentification element is a header that divides content into sections.

TraitImage

Gets a trait that indicates that this IUIAccessibilityIdentification element should be treated as an image.

TraitKeyboardKey

Gets a trait that indicates that this IUIAccessibilityIdentification element acts like a keyboard key.

TraitLink

Gets a trait that indicates that this IUIAccessibilityIdentification element should be considered a link.

TraitNone

Gets a trait that indicates that this IUIAccessibilityIdentification element has no traits.

TraitNotEnabled

Gets a trait that indicates that this IUIAccessibilityIdentification element is not enabled.

TraitPlaysSound

Gets a trait that indicates that this IUIAccessibilityIdentification elements plays its own sound when activated.

TraitSearchField

Gets a trait that indicates that this IUIAccessibilityIdentification element should be considered a search field.

TraitSelected

Gets a trait that indicates that this IUIAccessibilityIdentification element is selected.

TraitStartsMediaSession

Gets a trait that indicates that this IUIAccessibilityIdentification element starts a media session when it is activated.

TraitStaticText

Gets a trait that indicates that this IUIAccessibilityIdentification element should be treated as static text.

TraitSummaryElement

Gets a trait that provides summary information when an application starts.

TraitTabBar
TraitUpdatesFrequently

Gets a trait that indicates that this IUIAccessibilityIdentification element updates its AccessibilityLabel or AccessibilityValue.

UnfocusedElementKey

A string constant used by accessibility APIs (see FocusedElement(String)) to identify the previously focused element.

VoiceOverStatusChanged

Developers should not use this deprecated property. Developers should use 'VoiceOverStatusDidChangeNotification' instead.

VoiceOverStatusDidChangeNotification

Notification constant for VoiceOverStatusDidChange

Zone (Inherited from NSObject)

Methods

AccessibilityActivate()

Activates accessibility for this UIView, returning true on success.

AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr)

Registers an object for being observed externally (using NSString keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method.

(Inherited from NSObject)
AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr)

Registers an object for being observed externally (using string keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method.

(Inherited from NSObject)
AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>)

Registers an object for being observed externally using an arbitrary method.

(Inherited from NSObject)
AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>)

Registers an object for being observed externally using an arbitrary method.

(Inherited from NSObject)
AppearanceWhenContainedIn(Type[])

Returns a strongly typed UIAppearance for instances of this class when the view is hosted in the specified hierarchy.

AwakeFromNib()

Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib().

(Inherited from NSObject)
BeginInvokeOnMainThread(Action) (Inherited from NSObject)
BeginInvokeOnMainThread(Selector, NSObject)

Invokes asynchrously the specified code on the main UI thread.

(Inherited from NSObject)
Bind(NSString, NSObject, String, NSDictionary) (Inherited from NSObject)
Bind(String, NSObject, String, NSDictionary) (Inherited from NSObject)
BindingInfo(String) (Inherited from NSObject)
BindingOptionDescriptions(String) (Inherited from NSObject)
BindingValueClass(String) (Inherited from NSObject)
CommitEditing() (Inherited from NSObject)
CommitEditing(NSObject, Selector, IntPtr) (Inherited from NSObject)
ConformsToProtocol(IntPtr)

Invoked to determine if this object implements the specified protocol.

(Inherited from NSObject)
Copy()

Performs a copy of the underlying Objective-C object.

(Inherited from NSObject)
DangerousAutorelease() (Inherited from NSObject)
DangerousRelease() (Inherited from NSObject)
DangerousRetain() (Inherited from NSObject)
DidChange(NSKeyValueChange, NSIndexSet, NSString)

Indicates a change occurred to the indexes for a to-many relationship.

(Inherited from NSObject)
DidChange(NSString, NSKeyValueSetMutationKind, NSSet) (Inherited from NSObject)
DidChangeValue(String)

Indicates that a change occurred on the specified key.

(Inherited from NSObject)
Dispose()

Releases the resources used by the NSObject object.

(Inherited from NSObject)
Dispose(Boolean)

Releases the resources used by the NSObject object.

(Inherited from NSObject)
DoesNotRecognizeSelector(Selector)

Indicates that this object does not recognize the specified selector.

(Inherited from NSObject)
EncodeTo(NSCoder)

Encodes the state of the object on the provided encoder

Equals(NSObject) (Inherited from NSObject)
Equals(Object) (Inherited from NSObject)
ExposedBindings() (Inherited from NSObject)
GetAppearance(UITraitCollection)

Returns an appearance proxy for the specified traits.

GetAppearance(UITraitCollection, Type[])

Returns an appearance proxy for the specified traits.

GetAppearance<T>()

Obtains the appearance proxy UIBarItem.UIBarItemAppearance for the subclass of UIBarItem.

GetAppearance<T>(UITraitCollection)

Obtains the appearance proxy UIBarItem.UIBarItemAppearance for the subclass of UIBarItem.

GetAppearance<T>(UITraitCollection, Type[])

Obtains the appearance proxy UIBarItem.UIBarItemAppearance for the subclass of UIBarItem that has the specified trait collection when the view is hosted in the specified hierarchy.

GetBindingInfo(NSString) (Inherited from NSObject)
GetBindingOptionDescriptions(NSString) (Inherited from NSObject)
GetBindingValueClass(NSString) (Inherited from NSObject)
GetDictionaryOfValuesFromKeys(NSString[])

Retrieves the values of the specified keys.

(Inherited from NSObject)
GetHashCode()

Generates a hash code for the current instance.

(Inherited from NSObject)
GetMethodForSelector(Selector) (Inherited from NSObject)
GetNativeField(String) (Inherited from NSObject)
GetNativeHash() (Inherited from NSObject)
GetTitleTextAttributes(UIControlState)

The text attributes of the title of the UIBarItem.

Init() (Inherited from NSObject)
InitializeHandle(IntPtr) (Inherited from NSObject)
InitializeHandle(IntPtr, String) (Inherited from NSObject)
Invoke(Action, Double) (Inherited from NSObject)
Invoke(Action, TimeSpan) (Inherited from NSObject)
InvokeOnMainThread(Action) (Inherited from NSObject)
InvokeOnMainThread(Selector, NSObject)

Invokes synchrously the specified code on the main UI thread.

(Inherited from NSObject)
IsEqual(NSObject) (Inherited from NSObject)
IsKindOfClass(Class) (Inherited from NSObject)
IsMemberOfClass(Class) (Inherited from NSObject)
MarkDirty()

Promotes a regular peer object (IsDirectBinding is true) into a toggleref object.

(Inherited from NSObject)
MutableCopy()

Creates a mutable copy of the specified NSObject.

(Inherited from NSObject)
ObjectDidEndEditing(NSObject) (Inherited from NSObject)
ObserveValue(NSString, NSObject, NSDictionary, IntPtr)

Indicates that the value at the specified keyPath relative to this object has changed.

(Inherited from NSObject)
PerformSelector(Selector) (Inherited from NSObject)
PerformSelector(Selector, NSObject) (Inherited from NSObject)
PerformSelector(Selector, NSObject, Double)

Invokes the selector on the current instance and if the obj is not null, it passes this as its single parameter.

(Inherited from NSObject)
PerformSelector(Selector, NSObject, Double, NSString[]) (Inherited from NSObject)
PerformSelector(Selector, NSObject, NSObject) (Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean) (Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[]) (Inherited from NSObject)
PrepareForInterfaceBuilder() (Inherited from NSObject)
RemoveObserver(NSObject, NSString)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath.

(Inherited from NSObject)
RemoveObserver(NSObject, NSString, IntPtr)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context.

(Inherited from NSObject)
RemoveObserver(NSObject, String)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath.

(Inherited from NSObject)
RemoveObserver(NSObject, String, IntPtr)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context.

(Inherited from NSObject)
RespondsToSelector(Selector)

Whether this object recognizes the specified selector.

(Inherited from NSObject)
SetNativeField(String, NSObject) (Inherited from NSObject)
SetNilValueForKey(NSString)

Sets the value of the specified key to null.

(Inherited from NSObject)
SetTitleTextAttributes(UITextAttributes, UIControlState)

Specifies the text attributes of the title of the UIBarItem.

SetValueForKey(NSObject, NSString)

Sets the value of the property specified by the key to the specified value.

(Inherited from NSObject)
SetValueForKeyPath(IntPtr, NSString)

A constructor used when creating managed representations of unmanaged objects; Called by the runtime.

(Inherited from NSObject)
SetValueForKeyPath(NSObject, NSString)

Sets the value of a property that can be reached using a keypath.

(Inherited from NSObject)
SetValueForUndefinedKey(NSObject, NSString)

Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException.

(Inherited from NSObject)
SetValuesForKeysWithDictionary(NSDictionary)

Sets the values of this NSObject to those in the specified dictionary.

(Inherited from NSObject)
ToString()

Returns a string representation of the value of the current instance.

(Inherited from NSObject)
Unbind(NSString) (Inherited from NSObject)
Unbind(String) (Inherited from NSObject)
ValueForKey(NSString)

Returns the value of the property associated with the specified key.

(Inherited from NSObject)
ValueForKeyPath(NSString)

Returns the value of a property that can be reached using a keypath.

(Inherited from NSObject)
ValueForUndefinedKey(NSString)

Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException.

(Inherited from NSObject)
WillChange(NSKeyValueChange, NSIndexSet, NSString)

Indicates that the values of the specified indices in the specified key are about to change.

(Inherited from NSObject)
WillChange(NSString, NSKeyValueSetMutationKind, NSSet) (Inherited from NSObject)
WillChangeValue(String)

Indicates that the value of the specified key is about to change.

(Inherited from NSObject)

Extension Methods

GetDebugDescription(INSObjectProtocol)
GetAccessibilityCustomRotors(NSObject)

Gets the array of UIAccessibilityCustomRotor objects appropriate for this object.

SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[])

Sets the array of UIAccessibilityCustomRotor objects appropriate for this object.

Applies to

See also