UIKit Namespace

The UIKit namespace provides the primary user interface classes for Xamarin.iOS.

Classes

DraggingEventArgs	Provides data for the DraggingEnded event.
NSAttributedString_NSAttributedStringKitAdditions	Defines an extension method for NSAttributedString.
NSAttributedStringAttachmentConveniences	Provides an extension method for NSAttributedString that supports text attachments .
NSCoder_UIGeometryKeyedCoding	A set of NSCoder extension methods that add encoding of geometry-based data for use in UIKit.
NSDataAsset	Platform-specific data object stored in an asset catalog.
NSExtendedStringDrawing	String drawing extension methods for NSString.
NSFileProviderExtension	Subclasses of NSFileProviderExtension implement the move and open functionality for extensions of type UIDocumentPickerViewController.
NSIdentifier	Defined the Identifier(NSLayoutConstraint) extension property on NSLayoutConstraint objects.
NSLayoutAnchor<AnchorType>	Generates NSLayoutConstraint objects based on the value of the NSLayoutConstraint associated with this.
NSLayoutConstraint	A relationship between two layout attributes used in a constraint-based layout.
NSLayoutDimension	An NSLayoutAnchor<AnchorType> whose methods create dimensional NSLayoutConstraint objects.
NSLayoutManager	Responsible for layout of text stored in a NSTextStorage object.
NSLayoutManagerDelegate	A delegate object that exposes events for NSLayoutManagers.
NSLayoutManagerDelegate_Extensions	Extension methods to the INSLayoutManagerDelegate interface to support all the methods from the NSLayoutManagerDelegate protocol.
NSLayoutXAxisAnchor	An NSLayoutAnchor<AnchorType> whose methods create horizontal NSLayoutConstraint objects.
NSLayoutYAxisAnchor	An NSLayoutAnchor<AnchorType> whose methods create vertical NSLayoutConstraint objects.
NSMutableAttributedStringKitAdditions	Provides an extension method for NSMutableAttributedString that cleans up inconsistencies that develop after several edits.
NSMutableParagraphStyle	A class that extends NSParagraphStyle to allow changing subattributes.
NSObject_UIAccessibilityCustomRotor	Extension method for NSObject that provides access to the UIAccessibilityCustomRotor array.
NSParagraphStyle	A class that specifies paragraph-relevant attributes of an NSAttributedString.
NSPreviewInteractionPreviewUpdateEventArgs	Provides data for the DidUpdatePreviewTransition and E:UIKit.NSPreviewInteractionPreviewUpdateEventArgs.DidUpdatePreviewTransition events.
NSShadow	The visual attributes associated with a drop shadow.
NSStringDrawing	Extension methods for NSString to support easy screen drawing.
NSTextAttachment	An attachment to a NSAttributedString.
NSTextAttachmentContainer	Defines the relationship between NSTextAttachments and a NSLayoutManager.
NSTextContainer	Models the geometric layout of a page in Text Kit.
NSTextStorage	A subclass of NSMutableAttributedString that supports Core Text layout management.
NSTextStorage.Notifications	Notifications posted by the NSTextStorage class.
NSTextStorageDelegate	A delegate object that provides events relating to processing editing for NSTextStorage.
NSTextStorageDelegate_Extensions	Extension methods to the INSTextStorageDelegate interface to support all the methods from the NSTextStorageDelegate protocol.
NSTextStorageEventArgs	Provides data for the WillProcessEditing and E:UIKit.NSTextStorageEventArgs.WillProcessEditing events.
NSTextTab	Represents a tab location in Text Kit.
TransitionCoordinator_UIViewController	Provides the GetTransitionCoordinator extension method for UIViewControllers.
UIAcceleration	A class that stores the data from an acceleration event.
UIAccelerometer	A class that encapsulates the onboard hardware accelerometer and generates UIAcceleration objects.
UIAccelerometerDelegate	A class used to receive notifications from the UIAccelerometer.
UIAccelerometerDelegate_Extensions	Extension methods to the IUIAccelerometerDelegate interface to support all the methods from the UIAccelerometerDelegate protocol.
UIAccelerometerEventArgs	Provides data for the Acceleration event.
UIAccessibility	Provides access to the accessibility framework for UIKit.
UIAccessibilityAnnouncementFinishedEventArgs	Provides data for the event.
UIAccessibilityContainer_Extensions	Extension class that, together with the IUIAccessibilityContainer interface, comprise the UIAccessibilityContainer protocol.
UIAccessibilityContainerDataTable	Contains accessibility information about the layout of a table and its cells.
UIAccessibilityContainerDataTable_Extensions	Extension methods to the IUIAccessibilityContainerDataTable interface to support all the methods from the UIAccessibilityContainerDataTable protocol.
UIAccessibilityCustomAction	Allows methods of type Func<Boolean> to be added to AccessibilityCustomActions as accessibility-supporting supplementary actions.
UIAccessibilityCustomRotor	An object for finding successive related elements with Voice Over.
UIAccessibilityCustomRotorItemResult	A target element of a custom rotor.
UIAccessibilityCustomRotorSearchPredicate	Search parameters for matching custom rotor item searches.
UIAccessibilityElement	Allows accessibility information to be added to an element that is not accessible by default.
UIAccessibilityLocationDescriptor	An object that provides an accessible description of a location.
UIAccessibilityReadingContent_Extensions	Extension class that, together with the IUIAccessibilityReadingContent interface, comprise the UIAccessibilityReadingContent protocol.
UIActionSheet	A UIView that displays an action sheet with one or more buttons. (As of iOS 8, devs should use UIAlertController rather than this class.)
UIActionSheet.UIActionSheetAppearance	Appearance class for objects of type UIActionSheet.
UIActionSheetDelegate	A class used to receive notifications from a UIActionSheet.
UIActionSheetDelegate_Extensions	Extension methods to the IUIActionSheetDelegate interface to support all the methods from the UIActionSheetDelegate protocol.
UIActivity	Abstract base class of activities to which the UIActivityViewController can send data.
UIActivityIndicatorView	A UIView that displays a spinning and animated gear that is used to provide the user with feedback that an activity is taking place.
UIActivityIndicatorView.UIActivityIndicatorViewAppearance	Appearance class for objects of type UIActivityIndicatorView.
UIActivityItemProvider	Abstract class that, when subtyped, can be a proxy for the data of a UIActivity.
UIActivityItemSource	Abstract class that, when implemented, provides data for use by a UIActivityViewController
UIActivityItemSource_Extensions	Extension methods to the IUIActivityItemSource interface to support all the methods from the UIActivityItemSource protocol.
UIActivityType	Identifiers for iOS-provided activities.
UIActivityViewController	A standard view controller that connects the application to a number of standard services such as social networks, SMS, etc.
UIAdaptivePresentationControllerDelegate	Delegate object for UIPresentationController objects. Provides methods called prior to adaptive presenttation.
UIAdaptivePresentationControllerDelegate_Extensions	Extension methods to the IUIAdaptivePresentationControllerDelegate interface to support all the methods from the UIAdaptivePresentationControllerDelegate protocol.
UIAlertAction	Defines the style, title, and behavior of an alert presented to the user with a UIAlertController. Use the Create(String, UIAlertActionStyle, Action<UIAlertAction>) static method to instantiate.
UIAlertController	Displays an alert message or action sheet to the user, with optional text fields for data entry and action buttons.
UIAlertView	A UIView that displays a dialog message with one or more buttons. (As of iOS 8, devs should use UIAlertController rather than this class.)
UIAlertView.UIAlertViewAppearance	Appearance class for objects of type UIAlertView.
UIAlertViewDelegate	A class used to receive notifications from a UIAlertView.
UIAlertViewDelegate_Extensions	Extension methods to the IUIAlertViewDelegate interface to support all the methods from the UIAlertViewDelegate protocol.
UIAppearance	Proxy class for styling the appearance of N:UIKit views.
UIAppearanceContainer	Defines the retrieval of the appearance proxy for a class.
UIApplication	Encapsulates the main processing loop for a MonoTouch application.
UIApplication.Notifications	Notification posted by the UIApplication class.
UIApplicationDelegate	A class used to receive events raised by a UIApplication.
UIApplicationDelegate_Extensions	Extension methods to the IUIApplicationDelegate interface to support all the methods from the UIApplicationDelegate protocol.
UIApplicationLaunchEventArgs	Provides data for the event.
UIApplicationOpenUrlOptions	A DictionaryContainer that holds options for use with calls to M:UIApplication.OpenURL*.
UIApplicationShortcutIcon	Icon for a Quick Action shortcut, which appears in response to user-applied pressure.
UIApplicationShortcutItem	A Quick Action shortcut, which appears in response to user-applied pressure.
UIAttachmentBehavior	Specifies a IUIDynamicItem's attachment to a reference point or to another IUIDynamicItem.
UIBarButtonItem	A button item hosted in either a UIToolbar or a UINavigationBar.
UIBarButtonItem.UIBarButtonItemAppearance	Appearance class for objects of type UIBarButtonItem.
UIBarButtonItemGroup	Manager for a set of bar button items that appear on the shortcuts bar above an iPad keyboard.
UIBarItem	Base class for items added to the bars at the bottom of the screen.
UIBarItem.Notifications	Notifications posted by UIBarItem objects.
UIBarItem.UIBarItemAppearance	Appearance class for objects of type UIBarItem.
UIBarPositioning	A class that allows the bar position defintion to be specified dynamically and positioned.
UIBarPositioningDelegate	A common base class for delegates of UIBars such as UISearchBarDelegate and UIToolbarDelegate.
UIBarPositioningDelegate_Extensions	Extension methods to the IUIBarPositioningDelegate interface to support all the methods from the UIBarPositioningDelegate protocol.
UIBezierPath	A UIControl that displays a reusable bezier path. Supports hit detection as well as Stroke and Fill operations on a graphics context. This is a high-level front end to CoreGraphics's CGContext API.
UIBlurEffect	When added to a UIVisualEffectView, blurs the content of the target UIView.
UIButton	Button control.
UIButton.UIButtonAppearance	Appearance class for objects of type UIButton.
UIButtonEventArgs	Provides data for the WillDismiss, E:UIKit.UIButtonEventArgs.Dismissed and E:UIKit.UIButtonEventArgs.WillDismiss, E:UIKit.UIButtonEventArgs.Clicked, E:UIKit.UIButtonEventArgs.Dismissed and E:UIKit.UIButtonEventArgs.WillDismiss events.
UICloudSharingController	Standard UIViewController for adding or removing people from a CloudKit share record.
UICloudSharingControllerDelegate	Delegate object for the CloudKit sharing controller.
UICloudSharingControllerDelegate_Extensions	Extension methods to the IUICloudSharingControllerDelegate interface to support all the methods from the UICloudSharingControllerDelegate protocol.
UICollectionElementKindSectionKey	Constants relating to UICollectionElementKindSection.
UICollectionReusableView	The base class for UIViews that are reused in a UICollectionView.
UICollectionReusableView.UICollectionReusableViewAppearance	Appearance class for objects of type UICollectionReusableView.
UICollectionView	Efficiently presents multiple UIViews on the screen using flexible layouts.
UICollectionView.UICollectionViewAppearance	Appearance class for objects of type UICollectionView.
UICollectionViewCell	Represents a reusable content view in the set being presented by the UICollectionView.
UICollectionViewCell.UICollectionViewCellAppearance	Appearance class for objects of type UICollectionViewCell.
UICollectionViewController	A UIViewController subtype for controlling collection views.
UICollectionViewDataSource	The data source for a UICollectionView.
UICollectionViewDataSource_Extensions	Extension methods to the IUICollectionViewDataSource interface to support all the methods from the UICollectionViewDataSource protocol.
UICollectionViewDataSourcePrefetching_Extensions	Extension methods for IUICollectionViewDataSourcePrefetching that define the optional members of the UICollectionViewDataSourcePrefetching_Extensions protocol.
UICollectionViewDelegate	Used to receive notices relating to a UICollectionView.
UICollectionViewDelegate_Extensions	Extension methods to the IUICollectionViewDelegate interface to support all the methods from the UICollectionViewDelegate protocol.
UICollectionViewDelegateFlowLayout	Used to customize spacing and react to events in a UICollectionViewFlowLayout.
UICollectionViewDelegateFlowLayout_Extensions	Extension methods to the IUICollectionViewDelegateFlowLayout interface to support all the methods from the UICollectionViewDelegateFlowLayout protocol.
UICollectionViewDragDelegate	Interface for a drag operation that started from a collection view.
UICollectionViewDragDelegate_Extensions	Extension methods to the IUICollectionViewDragDelegate interface to support all the methods from the UICollectionViewDragDelegate protocol.
UICollectionViewDropDelegate	Delegate for handling drops to collection views.
UICollectionViewDropDelegate_Extensions	Extension methods to the IUICollectionViewDropDelegate interface to support all the methods from the UICollectionViewDropDelegate protocol.
UICollectionViewDropPlaceholder	Developers should use this object as a temporary placeholder while retrieving data from a NSItemProvider.
UICollectionViewDropProposal	The proposed method of handling dropped content for a collection view.
UICollectionViewFlowLayout	A flow-based layout for use with UICollectionViews.
UICollectionViewFlowLayoutInvalidationContext	A UICollectionViewLayoutInvalidationContext for use with UICollectionViewFlowLayouts.
UICollectionViewFocusUpdateContext	Holds index paths for the the previously- and newly- focused items in a UICollectionView.
UICollectionViewLayout	Base class for specifying the layout of a UICollectionView.
UICollectionViewLayoutAttributes	Provides layout attributes for UICollectionViewLayouts.
UICollectionViewLayoutInvalidationContext	Specifies whether a call to InvalidateLayout() should affect just the data-source count or everything.
UICollectionViewPlaceholder
UICollectionViewSource	An alternative to the UICollectionViewDelegate and UICollectionViewDataSource classes.
UICollectionViewTransitionLayout	A UICollectionViewLayout that is used temporarily when a UICollectionView is transitioning between one layout and another.
UICollectionViewTransitionResult	Holds the return values from the asynchronous method StartInteractiveTransitionAsync(UICollectionViewLayout, UICollectionViewTransitionLayout).
UICollectionViewUpdateItem	A single change to be applied to a UICollectionViewLayout.
UICollisionBeganBoundaryContactEventArgs	Provides data for the BeganBoundaryContact event.
UICollisionBeganContactEventArgs	Provides data for the BeganContact event.
UICollisionBehavior	Detects boundary touches between IUIDynamicItems and boundaries or other IUIDynamicItems.
UICollisionBehaviorDelegate	Provides life-cycle events relating to UI Dynamic UICollisionBehavior collisions.
UICollisionBehaviorDelegate_Extensions	Extension methods to the IUICollisionBehaviorDelegate interface to support all the methods from the UICollisionBehaviorDelegate protocol.
UICollisionEndedBoundaryContactEventArgs	Provides data for the EndedBoundaryContact event.
UICollisionEndedContactEventArgs	Provides data for the EndedContact event.
UIColor	Colors and Patterns as used in MonoTouch.UIKit.
UIContentContainer	With IUIContentContainer and T:UIKit.UIContentContainer_Extensions defines the protocol for UIViewControllers as they experience changes in size and traits (see TraitCollection).
UIContentSizeCategoryChangedEventArgs	Provides data for the event.
UIContentSizeCategoryExtensions
UIContextualAction	A context action for a table row.
UIControl	The base class for controls in MonoTouch.UIKit.
UIControl.UIControlAppearance	Appearance class for objects of type UIControl.
UICoordinateSpace	A frame of reference on the screen.
UICubicTimingParameters	Defines animation timing with a cubic Bezier curve.
UIDatePicker	A UIControl that displays a date picker control.
UIDatePicker.UIDatePickerAppearance	Appearance class for objects of type UIDatePicker.
UIDevice	Device information, provided by the CurrentDevice singleton.
UIDevice.Notifications	Notification posted by the UIDevice class.
UIDeviceOrientationExtensions	Extension methods for the UIDeviceOrientation class.
UIDictationPhrase	The text interpretation of a phrase dictated by the application user.
UIDocument	Abstract base class providing local and cloud-based management of Model data.
UIDocument.Notifications	Notification posted by the UIDocument class.
UIDocumentBrowserAction	Describes a custom action that the developer can add to the UI of a document browser.
UIDocumentBrowserErrorCodeExtensions	Extension methods for the UIKit.UIDocumentBrowserErrorCode enumeration.
UIDocumentBrowserTransitionController	Contains standard animations for a document browser.
UIDocumentBrowserViewController	A viewer for browsing documents.
UIDocumentBrowserViewControllerDelegate	Handles user interactions with a document browser.
UIDocumentBrowserViewControllerDelegate_Extensions	Extension methods to the IUIDocumentBrowserViewControllerDelegate interface to support all the methods from the UIDocumentBrowserViewControllerDelegate protocol.
UIDocumentInteractionController	Supports displaying, preview and opening files stored on the device.
UIDocumentInteractionControllerDelegate	A class used to receive notifications from the UIDocumentInteractionController class.
UIDocumentInteractionControllerDelegate_Extensions	Extension methods to the IUIDocumentInteractionControllerDelegate interface to support all the methods from the UIDocumentInteractionControllerDelegate protocol.
UIDocumentMenuDelegate	Delegate object for UIDocumentMenuViewController objects. Provides methods called when a document is picked or when the picking has been cancelled.
UIDocumentMenuDocumentPickedEventArgs	Provides data for the DidPickDocumentPicker event.
UIDocumentMenuViewController	A UIViewController that presents all available document pickers for a given file type and mode.
UIDocumentPickedAtUrlsEventArgs	Provides data for the DidPickDocumentAtUrls event.
UIDocumentPickedEventArgs	Provides data for the DidPickDocument event.
UIDocumentPickerDelegate	Delegate object for UIDocumentPickerViewController object. Defines methods called when the user picks a document or cancels.
UIDocumentPickerDelegate_Extensions	Extension methods to the IUIDocumentPickerDelegate interface to support all the methods from the UIDocumentPickerDelegate protocol.
UIDocumentPickerExtensionViewController	Subclasses of UIDocumentPickerExtensionViewController extend the Document Picker, allowing the user to import, export, open, and move documents outside of the local sandbox.
UIDocumentPickerViewController	Allows the user to select external documents or destinations.
UIDocumentSendingToApplicationEventArgs	Provides data for the WillBeginSendingToApplication and E:UIKit.UIDocumentSendingToApplicationEventArgs.WillBeginSendingToApplication events.
UIDragDropSessionExtensions	Contains methods for working with drag-and-drop sessions, including a default implementation of LoadObjects(Class, Action<INSItemProviderReading[]>).
UIDragInteraction	Interaction for dragging items and delegating drag session calls and item providing.
UIDragInteractionDelegate	Delegate object for drag interaction events.
UIDragInteractionDelegate_Extensions	Extension methods to the IUIDragInteractionDelegate interface to support all the methods from the UIDragInteractionDelegate protocol.
UIDragItem	An item that is being dragged.
UIDragPreview	A visual representation of a dragging item.
UIDragPreviewParameters	Specifies the appearance of the view that displays the drag preview.
UIDragPreviewTarget	Represents the location to which items from dropped or cancelled drag activities will animate.
UIDropInteraction	An implementation of IUIInteraction used for a drop interaction.
UIDropInteractionDelegate	Delegate object for a drop interaction.
UIDropInteractionDelegate_Extensions	Extension methods to the IUIDropInteractionDelegate interface to support all the methods from the UIDropInteractionDelegate protocol.
UIDropProposal	Represents a proposed response to a drop operation.
UIDynamicAnimator	Coordinates the UIKit Dynamics of a set of IUIDynamicItems and UIDynamicBehaviors.
UIDynamicAnimatorDelegate	A delegate object that exposes life-cycle events for UIDynamicAnimators.
UIDynamicBehavior	The base class for items that describe the physics-like behaviors of UIKit Dynamics, introduced in iOS 7.
UIDynamicItem	A class that can be affected by UIDynamicBehaviors.
UIDynamicItem_Extensions	Extension methods to the IUIDynamicItem interface to support all the methods from the UIDynamicItem protocol.
UIDynamicItemBehavior	Specifies physics properties for IUIDynamicItems. Also allows custom velocities to be added to items.
UIDynamicItemGroup	Manager for a set of dynamic items.
UIEvent	Touch Events.
UIExtensionPointIdentifier	Class that identifies keyboard types to disallow.
UIFeedbackGenerator	Abstract base class for classes that generate feedback hints, such as haptics.
UIFieldBehavior	A UIDynamicBehavior that models a field, such as gravity, electricity, or turbulence.
UIFocusAnimationCoordinator	Coordinates animations during a focus update.
UIFocusDebugger	Focus debugger bor use by lldb.
UIFocusEnvironment_Extensions	Extension methods for the IUIFocusEnvironment protocol.
UIFocusGuide	An invisible, focusable region that can direct focus to other UIView objects.
UIFocusItem_Extensions	A focusable item.
UIFocusMovementHint	Provides information about the next likely focus direction.
UIFocusSystem	The current focus state.
UIFocusUpdateContext	Contains the data about a change in focus.
UIFocusUpdateContext.Notifications
UIFont	Font representation for MonoTouch.UIKit classes.
UIFontAttributes	Attributes used to describe a font, used by UIFontDescriptor
UIFontDescriptor	Describes properties of a font, use to create fonts with certain features. Provides ways of finding fonts matching a description as well.
UIFontFeature	Represents a single typographic or font layout feature.
UIFontMetrics	Helper object for getting scalable Dynamic Type fonts.
UIFontTextStyleExtensions	Extension methods for the UIFontTextStyle enumeration.
UIFontTraits	A DictionaryContainer that describes the symbolic traits of a UIFont. Returned by Traits.
UIGestureRecognizer	Base class for gesture recognizers.
UIGestureRecognizer.ParameterlessDispatch	Subtype of UIGestureRecognizer.Token, which is returned by AddGestureRecognizer(UIGestureRecognizer).
UIGestureRecognizer.ParametrizedDispatch	Subtype of UIGestureRecognizer.Token.
UIGestureRecognizer.Token	Represents an action that was added to a UIGestureRecognizer.
UIGestureRecognizerDelegate	A class used to receive notifications from the UIGestureRecognizer class.
UIGestureRecognizerDelegate_Extensions	Extension methods to the IUIGestureRecognizerDelegate interface to support all the methods from the UIGestureRecognizerDelegate protocol.
UIGraphics	Helper methods to paint on the screen, PDF context or bitmaps.
UIGraphicsImageRenderer	A UIGraphicsRenderer that produces images (see UIGraphicsPdfRendererFormat).
UIGraphicsImageRendererContext	A UIGraphicsRendererContext for creating UIImage objects.
UIGraphicsImageRendererFormat	A UIGraphicsRendererFormat that describes the format of UIImage objects.
UIGraphicsPdfRenderer	A UIGraphicsRenderer that creates PDFs.
UIGraphicsPdfRendererContext	A UIGraphicsRendererContext for producing PDF documents.
UIGraphicsPdfRendererFormat	A UIGraphicsRendererFormat that describes the format for rendering PDFs.
UIGraphicsRenderer	A color-managed rendering context.
UIGraphicsRendererContext	Base class defining rendering contexts.
UIGraphicsRendererFormat	Base class for formats understood by subclasses of UIGraphicsRenderer.
UIGravityBehavior	A UIDynamicBehavior that models a gravity vector.
UIGuidedAccessErrorCodeExtensions
UIGuidedAccessRestriction	A static class that provides a method to determine the state of a Guided Access restriction.
UIGuidedAccessRestrictionDelegate_Extensions	Extension class that, together with the IUIGuidedAccessRestrictionDelegate interface, comprise the UIGuidedAccessRestrictionDelegate protocol.
UIImage	Image representation in UIKit, with support for loading, saving and manipulating images.
UIImage.Notifications	Class that contains handler for system notifications that relate to images.
UIImageAsset	Holds a mapping of UITraitCollection keys to UIImage values.
UIImagePickerController	Provides access to the system image and video capturing and selection facilities.
UIImagePickerControllerDelegate	A class used to receive notifications from the UIImagePickerController.
UIImagePickerControllerDelegate_Extensions	Extension methods to the IUIImagePickerControllerDelegate interface to support all the methods from the UIImagePickerControllerDelegate protocol.
UIImagePickerImagePickedEventArgs	Provides data for the FinishedPickingImage event.
UIImagePickerMediaPickedEventArgs	Provides data for the FinishedPickingMedia event.
UIImageView	A UIView that can render a single image or animate a series of images.
UIImageView.UIImageViewAppearance	Appearance class for objects of type UIImageView.
UIImpactFeedbackGenerator	A UIFeedbackGenerator that creates haptics simulating impacts.
UIInputView	A UIView that matches the appearance of the system keyboard.
UIInputView.UIInputViewAppearance	Appearance class for objects of type UIInputView.
UIInputViewController	Can be subclassed to produce a custom system-wide keyboard.
UIInterfaceOrientationExtensions	Extensions methods for the UIInterfaceOrientation enumeration.
UIInterpolatingMotionEffect	A UIMotionEffect that maps the device vertical and horizontal tilt into values on a keypath.
UIKeyboard	The iPhone virtual keyboard.
UIKeyboard.Notifications	Notification posted by the UIKeyboard class.
UIKeyboardEventArgs	Provides data for the event.
UIKeyCommand	Maps hardware key presses to custom actions.
UIKitThreadAccessException	Exception thrown when a UIKit API is invoked from a background thread.
UILabel	A UIView that displays text.
UILabel.UILabelAppearance	Appearance class for objects of type UILabel.
UILayoutGuide	A rectangular area used for defining autolayout constraints.
UILayoutGuide_UIConstraintBasedLayoutDebugging
UILayoutSupport	Provides the Length property, which specifies the distance, in points, from the nearest screen edge to the guide.
UILayoutSupport_Extensions	Extension methods to the IUILayoutSupport interface to support all the methods from the UILayoutSupport protocol.
UILexicon	A set of UILexiconEntry objects derived from a variety of system resources, such as first and last names from the Address Book, text shortcuts, and Apple product names.
UILexiconEntry	When the user types UserInput, an app dev can retrieve the properly spelled or capitalized DocumentText.
UILocalizedIndexedCollation	A convenience class used by table views to organize, sort, and modify the sections.
UILocalNotification	Creates time-based notifications that the operating system delivers to the user.
UILongPressGestureRecognizer	Gesture recognizer for long presses.
UIManagedDocument	A UIDocument that integrates with Core Data.
UIMarkupTextPrintFormatter	Lays out HTML text for multipage printing.
UIMenuController	The class used to implement Cut, Copy, Paste, Select, and Delete commands.
UIMenuController.Notifications	Notification posted by the UIMenuController class.
UIMenuItem	Creates menu items that are attached to the editing menu.
UIMotionEffect	The base class for motion-based visual effects on views linked to the device tilt.
UIMotionEffectGroup	Aggregates multiple UIMotionEffect.
UIMutableApplicationShortcutItem	A mutable "quick action" available on the Home screen.
UIMutableUserNotificationAction	A UIUserNotificationAction that can be modified after creation.
UIMutableUserNotificationCategory	A UIUserNotificationCategory that can be modified after creation.
UINavigationBar	A UIView that displays the standard hierarchical navigation metaphor for iOS.
UINavigationBar.UINavigationBarAppearance	Appearance class for objects of type UINavigationBar.
UINavigationBarDelegate	A class used to receive notifications from a UINavigationBar.
UINavigationBarDelegate_Extensions	Extension methods to the IUINavigationBarDelegate interface to support all the methods from the UINavigationBarDelegate protocol.
UINavigationController	A UIViewController for managing hierarchical navigation.
UINavigationControllerDelegate	A class used to receive events from a UINavigationController.
UINavigationControllerDelegate_Extensions	Extension methods to the IUINavigationControllerDelegate interface to support all the methods from the UINavigationControllerDelegate protocol.
UINavigationItem	The visual navigation elements of an object pushed onto a UINavigationBar.
UINib	Represents an Interface Builder nib / xib file.
UINotificationFeedbackGenerator	A UIFeedbackGenerator that generates haptics relating to successes, failures, and warnings.
UIObjectRestoration	Protocol for restoring objects.
UIPageControl	A UIControl that displays a pagination control.
UIPageControl.UIPageControlAppearance	Appearance class for objects of type UIPageControl.
UIPageViewController	Allows the application user to navigation between UIViewControllers using page-curl and page-scroll transitions.
UIPageViewControllerDataSource	Allows UIPageViewControllers to dynamically create page UIViewControllers.
UIPageViewControllerDataSource_Extensions	Extension methods to the IUIPageViewControllerDataSource interface to support all the methods from the UIPageViewControllerDataSource protocol.
UIPageViewControllerDelegate	The delegate for the UIPageViewController class.
UIPageViewControllerDelegate_Extensions	Extension methods to the IUIPageViewControllerDelegate interface to support all the methods from the UIPageViewControllerDelegate protocol.
UIPageViewControllerTransitionEventArgs	Provides data for the WillTransition event.
UIPageViewFinishedAnimationEventArgs	Provides data for the DidFinishAnimating event.
UIPanGestureRecognizer	Gesture recognizer for panning operations.
UIPasteboard	Support for the system pasteboard for cut, copy and paste.
UIPasteboard.Notifications	Notification posted by the UIPasteboard class.
UIPasteboardChangeEventArgs	Provides data for the event.
UIPasteboardNames	Constants that identify the name of a pasteboard.
UIPasteboardOptionKeys
UIPasteboardOptions	A DictionaryContainer that holds options for describing pasteboard privacy.
UIPasteConfiguration	Object that paste responders use to tell whether they accept pastes and drops for specific data typed.
UIPasteConfigurationSupporting_Extensions	Extension methods for the IUIPasteConfigurationSupporting class.
UIPathEventArgs	Provides data for the Saved event.
UIPencilInteraction
UIPencilInteractionDelegate
UIPencilInteractionDelegate_Extensions
UIPercentDrivenInteractiveTransition	An interactive transition (see UIViewControllerInteractiveTransitioning) whose PercentComplete property specifies the degree to which the transition has completed.
UIPickerView	A UIView that displays a spinning wheel control used to select data.
UIPickerView.UIPickerViewAppearance	Appearance class for objects of type UIPickerView.
UIPickerViewAccessibilityDelegate	Allows accessibility hint and label to be set in a picker view.
UIPickerViewAccessibilityDelegate_Extensions	Extension methods to the IUIPickerViewAccessibilityDelegate interface to support all the methods from the UIPickerViewAccessibilityDelegate protocol.
UIPickerViewDataSource	Base class for models that provide data to a UIPickerView object.
UIPickerViewDelegate	Class that receives event notifications from the UIPickerView.
UIPickerViewDelegate_Extensions	Extension methods to the IUIPickerViewDelegate interface to support all the methods from the UIPickerViewDelegate protocol.
UIPickerViewModel	The model for the UIPickerView.
UIPinchGestureRecognizer	Gesture recognizer for pinches.
UIPopoverBackgroundView	An abstract base class that provides the background view for a popover.
UIPopoverBackgroundView.UIPopoverBackgroundViewAppearance	Appearance class for objects of type UIPopoverBackgroundView.
UIPopoverController	Manages a popover on the screen.
UIPopoverControllerDelegate	Delegate class for the UIPopoverController class.
UIPopoverControllerDelegate_Extensions	Extension methods to the IUIPopoverControllerDelegate interface to support all the methods from the UIPopoverControllerDelegate protocol.
UIPopoverControllerRepositionEventArgs	Provides data for the WillReposition event.
UIPopoverPresentationController	Manages the user experience of a popover.
UIPopoverPresentationControllerDelegate	Delegate object for UIPopoverPresentationController objects. Provides methods relating to presentation and dismissal events and allows fine-grained control for adaptive presentations.
UIPopoverPresentationControllerDelegate_Extensions	Extension methods to the IUIPopoverPresentationControllerDelegate interface to support all the methods from the UIPopoverPresentationControllerDelegate protocol.
UIPopoverPresentationControllerRepositionEventArgs	Provides data for the WillReposition event.
UIPresentationController	Manages the user experience for advanced transitions and presentation of UIViewControllers whose ModalPresentationStyle is Custom.
UIPress	Models the press of a physical button on a remote control or game controller. (See also UITouch)
UIPressesEvent	Holds data relating to the pressing of physical button(s).
UIPreviewAction	A peek quick action, which appears when a user swipes a peek upward.
UIPreviewActionGroup	Manager for a set of preview actions.
UIPreviewInteraction	Registers views to respond to 3D interactions.
UIPreviewInteractionDelegate	Delegate object for UIPreviewInteraction objects, providing methods that are called during a 3D touch interaction.
UIPreviewInteractionDelegate_Extensions	Extension methods to the IUIPreviewInteractionDelegate interface to support all the methods from the UIPreviewInteractionDelegate protocol.
UIPrint	Constants used by the printing system.
UIPrinter	Information about a printer.
UIPrinterPickerCompletionResult	Represents the result of a printer picker controller.
UIPrinterPickerController	Presents a standard interface for selecting a printer.
UIPrinterPickerControllerDelegate	Delegate object for a UIPrinterPickerController. Defines events relating to the presentation and dismissal of the controller, and a method for when a printer has been selected.
UIPrinterPickerControllerDelegate_Extensions	Extension methods to the IUIPrinterPickerControllerDelegate interface to support all the methods from the UIPrinterPickerControllerDelegate protocol.
UIPrintErrorExtensions	Extension methods for the UIKit.UIPrintError enumeration.
UIPrintFormatter	An abstract base class that can be extended to lay out custom printable content.
UIPrintInfo	Encapsulates information relating to a specific print job.
UIPrintInteractionCompletionResult
UIPrintInteractionController	Main driver for the printing process on iOS.
UIPrintInteractionControllerDelegate	The delegate for the UIPrintInteractionController.
UIPrintInteractionControllerDelegate_Extensions	Extension methods to the IUIPrintInteractionControllerDelegate interface to support all the methods from the UIPrintInteractionControllerDelegate protocol.
UIPrintInteractionResult	The return values of the asynch methods M:UIKit.UIPrintInteractionController.PresentAsync*, PresentFromBarButtonItemAsync(UIBarButtonItem, Boolean, Boolean), and PresentFromRectInViewAsync(CGRect, UIView, Boolean, Boolean).
UIPrintPageRenderer	Draws pages for printing.
UIPrintPaper	Paper size and printing region for a print job.
UIProgressView	A UIView that displays a progress bar.
UIProgressView.UIProgressViewAppearance	Appearance class for objects of type UIProgressView.
UIPushBehavior	Applies an instantaneous or continuous force vector to a IUIDynamicItem.
UIReferenceLibraryViewController	Provides a dictionary-like service for looking up words and terms within an app.
UIRefreshControl	A UIControl that displays a control that initiates the refreshing of a UITableViewController.
UIRefreshControl.UIRefreshControlAppearance	Appearance class for objects of type UIRefreshControl.
UIRegion	Defines the area over which a force field operates for dynamic UI.
UIResponder	Base class for objects that respond or handle events.
UIResponder_NSObjectExtension	Extension methods for UIResponder that respond to attached hardware zoom/unzoom requests.
UIRotationGestureRecognizer	A UIGestureRecognizer that recognizes the two-finger rotation gesture.
UIScreen	Information about the screen.
UIScreen.Notifications	Notification posted by the UIScreen class.
UIScreenEdgePanGestureRecognizer	A UIPanGestureRecognizer that recognizes a panning gesture moving from the screen edge inward.
UIScreenMode	Represent some screen dimensions (which can vary when using AirPlay for example).
UIScrollView	A UIView that can scroll, pan, and page its children.
UIScrollView.UIScrollViewAppearance	Appearance class for objects of type UIScrollView.
UIScrollViewAccessibilityDelegate	Allows accessibility hint and label to be set in a UIScrollView.
UIScrollViewAccessibilityDelegate_Extensions	Extension methods to the IUIScrollViewAccessibilityDelegate interface to support all the methods from the UIScrollViewAccessibilityDelegate protocol.
UIScrollViewDelegate	A class used to receive notifications from UIScrollView.
UIScrollViewDelegate_Extensions	Extension methods to the IUIScrollViewDelegate interface to support all the methods from the UIScrollViewDelegate protocol.
UIScrollViewZoomingEventArgs	Provides data for the ZoomingStarted event.
UISearchBar	A UIView that displays a search bar.
UISearchBar.UISearchBarAppearance	Appearance class for objects of type UISearchBar.
UISearchBarButtonIndexEventArgs	Provides data for the SelectedScopeButtonIndexChanged event.
UISearchBarDelegate	A class used to receive notifications from a UISearchBar.
UISearchBarDelegate_Extensions	Extension methods to the IUISearchBarDelegate interface to support all the methods from the UISearchBarDelegate protocol.
UISearchBarTextChangedEventArgs	Provides data for the TextChanged event.
UISearchContainerViewController	A UIViewController that contains search results that the developer wishes to present in a custom container.
UISearchController	A UIViewController that manages the user experience of a search bar (UISearchBar) and associated results (see UISearchResultsUpdating).
UISearchControllerDelegate	Delegate object for a UISearchController. Defines methods relating to the presentation and dismissal of the UISearchController.
UISearchControllerDelegate_Extensions	Extension methods to the IUISearchControllerDelegate interface to support all the methods from the UISearchControllerDelegate protocol.
UISearchDisplayController	A controller that manages a search bar and an associated results table view.
UISearchDisplayDelegate	A class used to receive notifications from the UISearchDisplayController.
UISearchDisplayDelegate_Extensions	Extension methods to the IUISearchDisplayDelegate interface to support all the methods from the UISearchDisplayDelegate protocol.
UISearchResultsUpdating	Protocol for updating the search results based on the contents of the search bar.
UISegmentedControl	A UIControl that displays multiple buttons horizontally.
UISegmentedControl.UISegmentedControlAppearance	Appearance class for objects of type UISegmentedControl.
UISelectionFeedbackGenerator	A UIFeedbackGenerator that produces haptic feedback.
UISimpleTextPrintFormatter	A UIPrintFormatter that provides a single font, color, line-break mode, and alignment.
UISlider	A UIControl that displays a slider.
UISlider.UISliderAppearance	Appearance class for objects of type UISlider.
UISnapBehavior	A UIDynamicBehavior that snaps a IUIDynamicItem to a PointF.
UISplitViewController	A container UIViewController that presents two side-by-side UIViewControllers.
UISplitViewController_UIViewController	Defines extension methods on UIViewController relating to collapsing/expanding secondary view controllers.
UISplitViewControllerDelegate	The delegate associated with UISplitViewController events.
UISplitViewControllerDelegate_Extensions	Extension methods to the IUISplitViewControllerDelegate interface to support all the methods from the UISplitViewControllerDelegate protocol.
UISplitViewControllerDisplayModeEventArgs	Provides data for the WillChangeDisplayMode event.
UISplitViewHideEventArgs	Provides data for the WillHideViewController event.
UISplitViewPresentEventArgs	Provides data for the WillPresentViewController event.
UISplitViewShowEventArgs	Provides data for the WillShowViewController event.
UISpringLoadedInteraction	Interface for spring-loaded drag activities.
UISpringLoadedInteractionBehavior_Extensions	Extension methods for working with interaction behavior.
UISpringTimingParameters	A IUITimingCurveProvider for spring-based animations.
UIStackView	A UIView that holds a horizontal or vertical set of other UIView objects.
UIStackView.UIStackViewAppearance	Appearance class for objects of type UIStackView.
UIStateRestoration	Holds a key for restoring storyboards.
UIStateRestoring	A class that can participate in state restoration.
UIStateRestoring_Extensions	Extension methods to the IUIStateRestoring interface to support all the methods from the UIStateRestoring protocol.
UIStatusBarFrameChangeEventArgs	Provides data for the event.
UIStatusBarOrientationChangeEventArgs	Provides data for the event.
UIStepper	A UIControl that displays values that may be increased or decreased by pressing plus or minus buttons.
UIStepper.UIStepperAppearance	Appearance class for objects of type UIStepper.
UIStoryboard	A graph of UIViewControllers and transitions between them.
UIStoryboardPopoverSegue	A UIStoryboardSegue that presents a UIPopoverController.
UIStoryboardSegue	A transition between two UIViewControllers specified in a UIStoryboard.
UIStoryboardUnwindSegueSource	For an unwind segue, holds the originating UIViewController and the unwind action to be taken.
UIStringAttributeKey	Represents the key to be used in the NSMutableDictionary that define the attributes of a NSAttributedString.
UIStringAttributes	Strongly helper to define UIKit attributes for use with NSAttributedString.
UIStringDrawing	Extension class for drawing strings to the screen.
UISwipeActionsConfiguration	Describes the actions to perform when the user swipes rows on a table.
UISwipeGestureRecognizer	A UIGestureRecognizer that recognizes a swipe gesture in one or more directions.
UISwitch	A UIControl that displays an on/off switch.
UISwitch.UISwitchAppearance	Appearance class for objects of type UISwitch.
UITabBar	A UIView that displays a control used to select one value out of many (a radio-button like system).
UITabBar.UITabBarAppearance	Appearance class for objects of type UITabBar.
UITabBarController	Controller for a UITabBar.
UITabBarControllerDelegate	A class used to receive notifications from a UITabBarController.
UITabBarControllerDelegate_Extensions	Extension methods to the IUITabBarControllerDelegate interface to support all the methods from the UITabBarControllerDelegate protocol.
UITabBarCustomizeChangeEventArgs	Provides data for the OnEndCustomizingViewControllers and E:UIKit.UITabBarCustomizeChangeEventArgs.OnEndCustomizingViewControllers events.
UITabBarCustomizeEventArgs	Provides data for the OnCustomizingViewControllers event.
UITabBarDelegate	A class used to receive notifications from a UITabBar.
UITabBarDelegate_Extensions	Extension methods to the IUITabBarDelegate interface to support all the methods from the UITabBarDelegate protocol.
UITabBarFinalItemsEventArgs	Provides data for the WillEndCustomizingItems and E:UIKit.UITabBarFinalItemsEventArgs.WillEndCustomizingItems events.
UITabBarItem	An item in a UITabBar.
UITabBarItem.UITabBarItemAppearance	Appearance class for objects of type UITabBarItem.
UITabBarItemEventArgs	Provides data for the ItemSelected event.
UITabBarItemsEventArgs	Provides data for the WillBeginCustomizingItems and E:UIKit.UITabBarItemsEventArgs.WillBeginCustomizingItems events.
UITabBarSelectionEventArgs	Provides data for the ViewControllerSelected event.
UITableView	A table view is used to display and edit hierarchical lists of information. A UITableView is limited to a single column because it is designed for a small screen.
UITableView.Notifications	Notification posted by the UITableView class.
UITableView.UITableViewAppearance	Appearance class for objects of type UITableView.
UITableViewCell	A UIView that displays an element displayed by the UITableView. Cells can be reused.
UITableViewCell.UITableViewCellAppearance	Appearance class for objects of type UITableViewCell.
UITableViewController	Controller for a UITableView.
UITableViewDataSource	The data source for a UITableView. Xamarin.iOS developers should prefer to use UITableViewSource instead of this class.
UITableViewDataSource_Extensions	Extension methods to the IUITableViewDataSource interface to support all the methods from the UITableViewDataSource protocol.
UITableViewDataSourcePrefetching_Extensions	Extension methods for IUITableViewDataSourcePrefetching that define the optional methods of the IUITableViewDataSourcePrefetching protocol.
UITableViewDelegate	A class that receives notifications from a UITableView. MonoTouch developers should generally use UITableViewSource instead of this class.
UITableViewDelegate_Extensions	Extension methods to the IUITableViewDelegate interface to support all the methods from the UITableViewDelegate protocol.
UITableViewDragDelegate	Interface for a drag operation that started from a table view.
UITableViewDragDelegate_Extensions	Extension methods to the IUITableViewDragDelegate interface to support all the methods from the UITableViewDragDelegate protocol.
UITableViewDropDelegate	Delegate for handling drops to table views.
UITableViewDropDelegate_Extensions	Extension methods to the IUITableViewDropDelegate interface to support all the methods from the UITableViewDropDelegate protocol.
UITableViewDropPlaceholder	A UITableViewPlaceholder used for a drop operation.
UITableViewDropProposal	The proposed method of handling dropped content for a table view.
UITableViewFocusUpdateContext	A UIFocusUpdateContext that returns index path data about the current and next focus target.
UITableViewHeaderFooterView	A reusable UIView that can be used to present the header and footer of a UITableView section.
UITableViewHeaderFooterView.UITableViewHeaderFooterViewAppearance	Appearance class for objects of type UITableViewHeaderFooterView.
UITableViewPlaceholder
UITableViewRowAction	Defines behavior when the user swipes horizontally on a row in a table.
UITableViewSource	Joint UITableViewDataSource and UITableViewDelegate base class. Preferred way to provide data and handle lifecycle events for UITableViews.
UITapGestureRecognizer	A UIGestureRecognizer that recognizes single or multiple taps.
UITargetedDragPreview	A drag item preview for use during drag-and-drop animations.
UITextAttributes	Type used to describe the text attributes to set on some user interface elements.
UITextChecker	Speller and word-completion class.
UITextContentType	Known values for TextContentType that are hints to the system of the kind of UITextField data.
UITextDocumentProxy	Protocol that provides text context to a custom keyboard before and after the insertion point.
UITextDocumentProxy_Extensions	Extension methods to the IUITextDocumentProxy interface to support all the methods from the UITextDocumentProxy protocol.
UITextDragDelegate	Interface for customizing text view drag source behavior.
UITextDragDelegate_Extensions	Extension methods to the IUITextDragDelegate interface to support all the methods from the UITextDragDelegate protocol.
UITextDragPreviewRenderer
UITextDropDelegate	Delegate for handling drops to text views.
UITextDropDelegate_Extensions	Extension methods to the IUITextDropDelegate interface to support all the methods from the UITextDropDelegate protocol.
UITextDropProposal	The proposed method of handling dropped content for a text view.
UITextField	A text entry control.
UITextField.Notifications	Notification posted by the UITextField class.
UITextField.UITextFieldAppearance	Appearance class for objects of type UITextField.
UITextFieldDelegate	A class that receives notifications from a UITextField.
UITextFieldDelegate_Extensions	Extension methods to the IUITextFieldDelegate interface to support all the methods from the UITextFieldDelegate protocol.
UITextFieldEditingEndedEventArgs	Provides data for the EndedWithReason event.
UITextInput_Extensions	Extension class that, together with the IUITextInput interface, comprise the UITextInput protocol.
UITextInputAssistantItem	A manager for bar button items.
UITextInputDelegate	A delegate representing input events in a UITextField or UITextView.
UITextInputMode	Tracks the current input language
UITextInputMode.Notifications	Notification posted by the UITextInputMode class.
UITextInputPasswordRules	Implements rules for entering passwords
UITextInputStringTokenizer	An implementation of UITextInputTokenizer appropriate for most western-language keyboards.
UITextInputTokenizer	Abstract class that provides a tokenizer interface for the text input system (keyboard). Most western-style keyboards can use the UITextInputStringTokenizer subtype.
UITextInputTraits_Extensions	Extension class that, together with the IUITextInputTraits interface, comprise the UITextInputTraits protocol.
UITextPasteDelegate	Interface for pasting and dropping text via item providers.
UITextPasteDelegate_Extensions	Extension methods to the IUITextPasteDelegate interface to support all the methods from the UITextPasteDelegate protocol.
UITextPosition	A position in a text container.
UITextRange	A range within a text block.
UITextSelectionRect	An abstract class representing a selected range of text.
UITextView	A UIControl that displays a scrollable multi-line text editor.
UITextView.Notifications	Notification posted by the UITextView class.
UITextView.UITextViewAppearance	Appearance class for objects of type UITextView.
UITextViewDelegate	A class used to receive notifications from a UITextView control.
UITextViewDelegate_Extensions	Extension methods to the IUITextViewDelegate interface to support all the methods from the UITextViewDelegate protocol.
UIToolbar	A UIView that displays a toolbar.
UIToolbar.UIToolbarAppearance	Appearance class for objects of type UIToolbar.
UIToolbarDelegate	A delegate object for UIToolbars that exposes an event relating to bar position.
UITouch	Represents a touch event on the screen.
UITraitCollection	Holds the horizontal and vertical size classes, as well as the user interface idiom and the display scale.
UITraitEnvironment	The protocol for accessing a UIViewController's TraitCollection.
UITransitionContext	Provides the constants for GetViewControllerForKey(NSString).
UIUserNotificationAction	Developers should not use this deprecated class. Instead, they should use UNNotificationAction.
UIUserNotificationCategory	Holds custom UIUserNotificationActions executed in response to a local or push notification.
UIUserNotificationSettings	Permissions for local notifications, as controlled by the application user.
UIVibrancyEffect	Allows a UIView to be legible / sharply rendered when used in conjunction with a UIBlurEffect.
UIVideo	Static class that exposes some helper methods for manipulating video.
UIVideoEditorController	A Video Editor Controller.
UIVideoEditorControllerDelegate	Callbacks for the UIVideoEditorController.
UIVideoEditorControllerDelegate_Extensions	Extension methods to the IUIVideoEditorControllerDelegate interface to support all the methods from the UIVideoEditorControllerDelegate protocol.
UIView	Base class used for components that want to render themselves and respond to events.
UIView_UITextField	Class that implements a text field in a view.
UIView.Notifications	Notifications posted by the UIView class.
UIView.UIViewAppearance	Appearance class for objects of type UIView.
UIViewController	Base class for classes that manage the interaction between Model classes and View classes
UIViewController.Notifications	Notification posted by the UIViewController class.
UIViewControllerAnimatedTransitioning	The base class for UIViewController transitions that perform custom fixed-duration animation.
UIViewControllerAnimatedTransitioning_Extensions	Extension methods to the IUIViewControllerAnimatedTransitioning interface to support all the methods from the UIViewControllerAnimatedTransitioning protocol.
UIViewControllerContextTransitioning	Provides the context for custom transitions between UIViewControllers.
UIViewControllerContextTransitioning_Extensions	Extension methods to the IUIViewControllerContextTransitioning interface to support all the methods from the UIViewControllerContextTransitioning protocol.
UIViewControllerInteractiveTransitioning	The base class for UIViewController transitions that interact with touch or program-driven time-varying behavior.
UIViewControllerInteractiveTransitioning_Extensions	Extension methods to the IUIViewControllerInteractiveTransitioning interface to support all the methods from the UIViewControllerInteractiveTransitioning protocol.
UIViewControllerPreviewingDelegate	Delegate object whose methods are called in reaction to "3D Touch" on supported hardware
UIViewControllerTransitionCoordinator_Extensions	Extension class that, together with the IUIViewControllerTransitionCoordinator interface, comprise the UIViewControllerTransitionCoordinator protocol.
UIViewControllerTransitionCoordinatorContext_Extensions	Extension class that, together with the IUIViewControllerTransitionCoordinatorContext interface, comprise the UIViewControllerTransitionCoordinatorContext protocol.
UIViewControllerTransitioningDelegate	A delegate object that provides functions relating to transitions in UIViewControllers.
UIViewControllerTransitioningDelegate_Extensions	Extension methods to the IUIViewControllerTransitioningDelegate interface to support all the methods from the UIViewControllerTransitioningDelegate protocol.
UIViewImplicitlyAnimating_Extensions	Extension class defining methods for animations that can be modified while they are running.
UIViewPrintFormatter	Lays out a view for printing.
UIViewPropertyAnimator	Manages the animation of properties of a UIView.
UIVisualEffect	Base class for UIBlurEffect and UIVibrancyEffect.
UIVisualEffectView	A UIView that applies a visual efect such as blur or vibrancy to either its children or UIViews behind it.
UIVisualEffectView.UIVisualEffectViewAppearance	Appearance class for objects of type UIVisualEffectView.
UIWebErrorArgs	Provides data for the event.
UIWebView	A UIView that displays a web browser.
UIWebView.UIWebViewAppearance	Appearance class for objects of type UIWebView.
UIWebViewDelegate	A class used to receive notifications from a UIWebView class.
UIWebViewDelegate_Extensions	Extension methods to the IUIWebViewDelegate interface to support all the methods from the UIWebViewDelegate protocol.
UIWindow	Windows are the main container for views in an iOS application.
UIWindow.Notifications	Notification posted by the UIWindow class.
UIWindow.UIWindowAppearance	Appearance class for objects of type UIWindow.
UIWindowLevel	The layer group to which a UIWindow belongs. Returned by WindowLevel.
WillEndDraggingEventArgs	Provides data for the WillEndDragging event.
ZoomingEndedEventArgs	Provides data for the ZoomingEnded event.

Structs

NSDirectionalEdgeInsets	Edge insets that account for text direction.
UIEdgeInsets	Edge insets, used to reduce or expand rectangles.
UIFloatRange	A range of single-precision floating point numbers.
UIOffset	A position offset.

Interfaces

INSLayoutManagerDelegate	Interface representing the required methods (if any) of the protocol NSLayoutManagerDelegate.
INSTextAttachmentContainer	Interface representing the required methods (if any) of the protocol NSTextAttachmentContainer.
INSTextLayoutOrientationProvider	Interface that, together with the T:UIKit.NSTextLayoutOrientationProvider_Extensions class, comprise the NSTextLayoutOrientationProvider protocol..
INSTextStorageDelegate	Interface representing the required methods (if any) of the protocol NSTextStorageDelegate.
IUIAccelerometerDelegate	Interface representing the required methods (if any) of the protocol UIAccelerometerDelegate.
IUIAccessibilityContainer	Base interface for the UIAccessibilityContainer protocol.
IUIAccessibilityContainerDataTable	Interface representing the required methods (if any) of the protocol UIAccessibilityContainerDataTable.
IUIAccessibilityContainerDataTableCell	Contains the row spand and column span of a cell.
IUIAccessibilityContentSizeCategoryImageAdjusting	Defines methods for images that can scale in reaction to accessibility requirements.
IUIAccessibilityIdentification	Interface defining the support for an accessibility identifier.
IUIAccessibilityReadingContent	Interface that, together with the UIAccessibilityReadingContent_Extensions class, comprise the UIAccessibilityReadingContent protocol.
IUIActionSheetDelegate	Interface representing the required methods (if any) of the protocol UIActionSheetDelegate.
IUIActivityItemSource	Interface representing the required methods (if any) of the protocol UIActivityItemSource.
IUIAdaptivePresentationControllerDelegate	Interface representing the required methods (if any) of the protocol UIAdaptivePresentationControllerDelegate.
IUIAlertViewDelegate	Interface representing the required methods (if any) of the protocol UIAlertViewDelegate.
IUIAppearance	Interface representing the required methods (if any) of the protocol UIAppearance.
IUIAppearanceContainer	Interface representing the required methods (if any) of the protocol UIAppearanceContainer.
IUIApplicationDelegate	Interface representing the required methods (if any) of the protocol UIApplicationDelegate.
IUIBarPositioning	Interface representing the required methods (if any) of the protocol UIBarPositioning.
IUIBarPositioningDelegate	Interface representing the required methods (if any) of the protocol UIBarPositioningDelegate.
IUICloudSharingControllerDelegate	Interface representing the required methods (if any) of the protocol UICloudSharingControllerDelegate.
IUICollectionViewDataSource	Interface representing the required methods (if any) of the protocol UICollectionViewDataSource.
IUICollectionViewDataSourcePrefetching	Interface defining methods for collection view data source's that may prefetch data.
IUICollectionViewDelegate	Interface representing the required methods (if any) of the protocol UICollectionViewDelegate.
IUICollectionViewDelegateFlowLayout	Interface representing the required methods (if any) of the protocol UICollectionViewDelegateFlowLayout.
IUICollectionViewDragDelegate	Interface representing the required methods (if any) of the protocol UICollectionViewDragDelegate.
IUICollectionViewDropCoordinator	System-created object used to coordinate drop actions with a collection view.
IUICollectionViewDropDelegate	Interface representing the required methods (if any) of the protocol UICollectionViewDropDelegate.
IUICollectionViewDropItem	Data for an item to be dropped into a collection view.
IUICollectionViewDropPlaceholderContext	Contains manages collection view placeholder information.
IUICollectionViewSource	Interface representing the required methods (if any) of the protocol UICollectionViewSource.
IUICollisionBehaviorDelegate	Interface representing the required methods (if any) of the protocol UICollisionBehaviorDelegate.
IUIContentContainer	Interface representing the required methods (if any) of the protocol UIContentContainer.
IUIContentSizeCategoryAdjusting	Allows elements to adjust to dynamic traits.
IUICoordinateSpace	Interface representing the required methods (if any) of the protocol UICoordinateSpace.
IUIDataSourceModelAssociation	Interface that, together with the T:UIKit.UIDataSourceModelAssociation_Extensions class, comprise the UIDataSourceModelAssociation protocol.
IUIDataSourceTranslating	Interface for managing data source objects.
IUIDocumentBrowserViewControllerDelegate	Interface representing the required methods (if any) of the protocol UIDocumentBrowserViewControllerDelegate.
IUIDocumentInteractionControllerDelegate	Interface representing the required methods (if any) of the protocol UIDocumentInteractionControllerDelegate.
IUIDocumentMenuDelegate	Interface representing the required methods (if any) of the protocol UIDocumentMenuDelegate.
IUIDocumentPickerDelegate	Interface representing the required methods (if any) of the protocol UIDocumentPickerDelegate.
IUIDragAnimating	Interface for adding custom preview animations for lift, drop, and cancellation, along with the standard drag and drop animations.
IUIDragDropSession	Interface for querying drag-and-drop capabilities and state.
IUIDragInteractionDelegate	Interface representing the required methods (if any) of the protocol UIDragInteractionDelegate.
IUIDragSession	Interface for providing custom data, visible to the originating activity only, to a drag interaction.
IUIDropInteractionDelegate	Interface representing the required methods (if any) of the protocol UIDropInteractionDelegate.
IUIDropSession	Interface for accessing drop session state and loading drag items.
IUIDynamicAnimatorDelegate	Interface representing the required methods (if any) of the protocol UIDynamicAnimatorDelegate.
IUIDynamicItem	Interface representing the required methods (if any) of the protocol UIDynamicItem.
IUIFocusAnimationContext	Interface for getting information about a focus animation.
IUIFocusDebuggerOutput	For internal use by the lldb debugger.
IUIFocusEnvironment	Interface defining the focus environment.
IUIFocusItem	Interface that defines the CanBecomeFocused method.
IUIFocusItemContainer	Manages spatial information for focus items in a focus environment.
IUIFocusItemScrollableContainer	Abstraction for the viewable and and total size of scrollable content.
IUIGestureRecognizerDelegate	Interface representing the required methods (if any) of the protocol UIGestureRecognizerDelegate.
IUIGuidedAccessRestrictionDelegate	Interface that, together with the UIGuidedAccessRestrictionDelegate_Extensions class, comprise the UIGuidedAccessRestrictionDelegate protocol.
IUIImagePickerControllerDelegate	Interface representing the required methods (if any) of the protocol UIImagePickerControllerDelegate.
IUIInputViewAudioFeedback	Interface that, together with the T:UIKit.UIInputViewAudioFeedback_Extensions class, comprise the UIInputViewAudioFeedback protocol.
IUIInteraction	Interface for adding drag-and-drop and spring-loaded operations.
IUIItemProviderPresentationSizeProviding
IUIKeyInput	Interface that, together with the T:UIKit.UIKeyInput_Extensions class, comprise the UIKeyInput protocol.
IUILayoutSupport	Interface representing the required methods (if any) of the protocol UILayoutSupport.
IUINavigationBarDelegate	Interface representing the required methods (if any) of the protocol UINavigationBarDelegate.
IUINavigationControllerDelegate	Interface representing the required methods (if any) of the protocol UINavigationControllerDelegate.
IUIObjectRestoration	Interface representing the required methods (if any) of the protocol UIObjectRestoration.
IUIPageViewControllerDataSource	Interface representing the required methods (if any) of the protocol UIPageViewControllerDataSource.
IUIPageViewControllerDelegate	Interface representing the required methods (if any) of the protocol UIPageViewControllerDelegate.
IUIPasteConfigurationSupporting	Interface defining methods for objects that support paste configuration.
IUIPencilInteractionDelegate
IUIPickerViewAccessibilityDelegate	Interface representing the required methods (if any) of the protocol UIPickerViewAccessibilityDelegate.
IUIPickerViewDataSource	Interface representing the required methods (if any) of the protocol UIPickerViewDataSource.
IUIPickerViewDelegate	Interface representing the required methods (if any) of the protocol UIPickerViewDelegate.
IUIPickerViewModel	Interface representing the required methods (if any) of the protocol UIPickerViewModel.
IUIPopoverBackgroundViewMethods	Interface that, together with the T:UIKit.UIPopoverBackgroundViewMethods_Extensions class, comprise the UIPopoverBackgroundViewMethods protocol.
IUIPopoverControllerDelegate	Interface representing the required methods (if any) of the protocol UIPopoverControllerDelegate.
IUIPopoverPresentationControllerDelegate	Interface representing the required methods (if any) of the protocol UIPopoverPresentationControllerDelegate.
IUIPreviewActionItem	Interface representing the required methods (if any) of the protocol IUIPreviewActionItem.
IUIPreviewInteractionDelegate	Interface representing the required methods (if any) of the protocol UIPreviewInteractionDelegate.
IUIPrinterPickerControllerDelegate	Interface representing the required methods (if any) of the protocol UIPrinterPickerControllerDelegate.
IUIPrintInteractionControllerDelegate	Interface representing the required methods (if any) of the protocol UIPrintInteractionControllerDelegate.
IUIScrollViewAccessibilityDelegate	Interface representing the required methods (if any) of the protocol UIScrollViewAccessibilityDelegate.
IUIScrollViewDelegate	Interface representing the required methods (if any) of the protocol UIScrollViewDelegate.
IUISearchBarDelegate	Interface representing the required methods (if any) of the protocol UISearchBarDelegate.
IUISearchControllerDelegate	Interface representing the required methods (if any) of the protocol UISearchControllerDelegate.
IUISearchDisplayDelegate	Interface representing the required methods (if any) of the protocol UISearchDisplayDelegate.
IUISearchResultsUpdating	Interface representing the required methods (if any) of the protocol UISearchResultsUpdating.
IUISplitViewControllerDelegate	Interface representing the required methods (if any) of the protocol UISplitViewControllerDelegate.
IUISpringLoadedInteractionBehavior	Interface for specifying spring-loaded interaction behavior.
IUISpringLoadedInteractionContext	Contains information about spring-loaded interaction behavior.
IUISpringLoadedInteractionEffect	Interface for applying state-based visual styles to spring-loaded interations.
IUISpringLoadedInteractionSupporting	Interface for controlling whether spring-loading is enabled for drag and drop.
IUIStateRestoring	Interface representing the required methods (if any) of the protocol UIStateRestoring.
IUITabBarControllerDelegate	Interface representing the required methods (if any) of the protocol UITabBarControllerDelegate.
IUITabBarDelegate	Interface representing the required methods (if any) of the protocol UITabBarDelegate.
IUITableViewDataSource	Interface representing the required methods (if any) of the protocol UITableViewDataSource.
IUITableViewDataSourcePrefetching	Interface for table view data sources that can prefetch their data.
IUITableViewDelegate	Interface representing the required methods (if any) of the protocol UITableViewDelegate.
IUITableViewDragDelegate	Interface representing the required methods (if any) of the protocol UITableViewDragDelegate.
IUITableViewDropCoordinator	System-created object used to coordinate drop actions with a table view.
IUITableViewDropDelegate	Interface representing the required methods (if any) of the protocol UITableViewDropDelegate.
IUITableViewDropItem	Data for an item to be dropped into a table view.
IUITableViewDropPlaceholderContext	Contains manages table view placeholder information.
IUITextDocumentProxy	Interface representing the required methods (if any) of the protocol UITextDocumentProxy.
IUITextDragDelegate	Interface representing the required methods (if any) of the protocol UITextDragDelegate.
IUITextDraggable	Interface for treating a text view as a drag source.
IUITextDragRequest	System-provided interface for getting information about a drag request that originated in a text view.
IUITextDropDelegate	Interface representing the required methods (if any) of the protocol UITextDropDelegate.
IUITextDroppable	Interface for accepting dropped text data.
IUITextDropRequest	Interface that describes a text view drop request.
IUITextFieldDelegate	Interface representing the required methods (if any) of the protocol UITextFieldDelegate.
IUITextInput	IUITextInput works with the inputting of text and allows the manipulaton of features including autocorrection and many other text input features related to document presentation.
IUITextInputDelegate	Interface representing the required methods (if any) of the protocol UITextInputDelegate.
IUITextInputTokenizer	Interface representing the required methods (if any) of the protocol UITextInputTokenizer.
IUITextInputTraits	An interface implemented by UITextField and UITextView with common input traits.
IUITextPasteConfigurationSupporting	Interface for text controls to respondto paste operations.
IUITextPasteDelegate	Interface representing the required methods (if any) of the protocol UITextPasteDelegate.
IUITextPasteItem	Interface for working with paste and drop text items.
IUITextViewDelegate	Interface representing the required methods (if any) of the protocol UITextViewDelegate.
IUITimingCurveProvider	Interface defining the required methods for the IUITimingCurveProvider protocol.
IUIToolbarDelegate	Interface representing the required methods (if any) of the protocol UIToolbarDelegate.
IUITraitEnvironment	Interface representing the required methods (if any) of the protocol UITraitEnvironment.
IUIUserActivityRestoring
IUIVideoEditorControllerDelegate	Interface representing the required methods (if any) of the protocol UIVideoEditorControllerDelegate.
IUIViewAnimating	Interface defining methods for custom animator objects.
IUIViewControllerAnimatedTransitioning	Interface representing the required methods (if any) of the protocol UIViewControllerAnimatedTransitioning.
IUIViewControllerContextTransitioning	Interface representing the required methods (if any) of the protocol UIViewControllerContextTransitioning.
IUIViewControllerInteractiveTransitioning	Interface representing the required methods (if any) of the protocol UIViewControllerInteractiveTransitioning.
IUIViewControllerPreviewing	Interface representing the required methods (if any) of the protocol IUIViewControllerPreviewing.
IUIViewControllerPreviewingDelegate	Interface representing the required methods (if any) of the protocol UIViewControllerPreviewingDelegate.
IUIViewControllerRestoration	Interface that, together with the T:UIKit.UIViewControllerRestoration_Extensions class, comprise the UIViewControllerRestoration protocol.
IUIViewControllerTransitionCoordinator	Interface that, together with the UIViewControllerTransitionCoordinator_Extensions class, comprise the UIViewControllerTransitionCoordinator protocol.
IUIViewControllerTransitionCoordinatorContext	Interface that defines the context for coordination of a transition.
IUIViewControllerTransitioningDelegate	Interface representing the required methods (if any) of the protocol UIViewControllerTransitioningDelegate.
IUIViewImplicitlyAnimating	Interface that defines methods for animations that can be modified while they are running.
IUIWebViewDelegate	Interface representing the required methods (if any) of the protocol UIWebViewDelegate.

Enums

NSControlCharacterAction	An enumeration whose values specify actions caused by control characters.
NSGlyphProperty	An enumeration whose values specify characteristics of a glyph.
NSLayoutAttribute	An enumeration of attributes for use with constraint-based layouts.
NSLayoutFormatOptions	An enumeration of values used by FromVisualFormat(String, NSLayoutFormatOptions, NSDictionary, NSDictionary)
NSLayoutRelation	An enumeration that specifies the relation between two attributes in a NSLayoutConstraint
NSTextEffect	An enumeration whose values specify text effects (e.g., Letterpress). Used with TextEffect.
NSTextLayoutOrientation	An enumeration whose values specify the direction in which text is laid out. Used with LayoutOrientation.
NSTextStorageEditActions	A flagging enumeration whose values are used by Text Kit to specify whether actions pertain to attributes, characters, or both.
NSWritingDirectionFormatType	Flagging enumeration that can specify overriding of writing direction.
UIAccessibilityContainerType	Enumerates the types that implement the IUIAccessibilityContainer interface.
UIAccessibilityCustomRotorDirection	Enmumerates search directions.
UIAccessibilityCustomSystemRotorType	Enumerates the types of content that may be represented by a UIAccessibilityCustomRotor object.
UIAccessibilityHearingDeviceEar	Enumerates the ear (or ears) for which the accessibility device is paired.
UIAccessibilityNavigationStyle	Enumerates how elements should be navigated by the assistive technology.
UIAccessibilityPostNotification	Notification types for UIAccessibility's PostNotification method.
UIAccessibilityScrollDirection	An enumeration indicating the scrolling direction desired.
UIAccessibilityTrait	An enumeration whose values can be used as flags for AccessibilityTraits.
UIAccessibilityZoomType	An enumeration that specifies what elements (currently, only the insertion point) is involved in automatic accessibility zooming.
UIActionSheetStyle	The visual style for a UIActionSheet.
UIActivityCategory	An enumeration whose values specify a category for a UIActivity.
UIActivityIndicatorViewStyle	The visual style for a UIActivityIndicatorView.
UIAlertActionStyle	Enumeration of the styles showing the effect of a UIAlertAction.
UIAlertControllerStyle	Enumerates whether a UIAlertController is displaying an action sheet or an alert.
UIAlertViewStyle	The visual style for a UIAlertView.
UIApplicationShortcutIconType	Enumerates system-provided icons for quick actions.
UIApplicationState	An enumeration indicating the current application state.
UIAttachmentBehaviorType	An enumeration whose values specify whether a UIAttachmentBehavior is anchored to a fixed point or to an IUIDynamicItem.
UIBackgroundFetchResult	An enumeration whose values specify the results of a DidReceiveRemoteNotification(UIApplication, NSDictionary, Action<UIBackgroundFetchResult>) completion handler.
UIBackgroundRefreshStatus	An enumeration whose values reflect the status of a background refresh. Available from BackgroundRefreshStatus.
UIBarButtonItemStyle	The visual style of a UIBarButtonItem.
UIBarButtonSystemItem	An enumeration of the predefined UIBarButtonItems.
UIBarMetrics	Enumerates layout bar metrics.
UIBarPosition	An enumeration whose values specify locations for UISearchBar, UINavigationBar, or UIToolbar.
UIBarStyle	The visual style for a navigation, search, or tool bar.
UIBaselineAdjustment	An enumeration that specifies text baseline alignment.
UIBlurEffectStyle	Enumerates the types of blur effect supported by UIBlurEffect.
UIButtonType	An enumeration of predefined button types.
UICloudSharingPermissionOptions	Flagging enumeration for the permission options for Cloud sharing.
UICollectionElementCategory	An enumeration of values used by RepresentedElementCategory.
UICollectionElementKindSection	An enumeration of view types that are supported in flow layouts.
UICollectionUpdateAction	An enumeration of valid UpdateAction properties.
UICollectionViewCellDragState	Enumerates drag operation states.
UICollectionViewDropIntent	Enumerates drop actions.
UICollectionViewFlowLayoutSectionInsetReference
UICollectionViewReorderingCadence	Enumerates collection view reorganization speeds for drop animations.
UICollectionViewScrollDirection	An enumeration of values used by the ScrollDirection property.
UICollectionViewScrollPosition	An enumeration of values used to specify to where a UIView should end up after a scroll into a UICollectionView.
UICollisionBehaviorMode	An enumeration whose values specify whether a UICollisionBehavior detects collisions to boundaries, items, or everything.
UIContentSizeCategory	An enumeration whose values specify the various dynamic type sizes that can be chosen by the application user.
UIContextualActionStyle	Enumerates action button styles.
UIControlContentHorizontalAlignment	An enumeration of horizontal alignments available to text and images.
UIControlContentVerticalAlignment	An enumeration of vertical alignments available to text and images.
UIControlEvent	An enumeration indicating various types of events.
UIControlState	An enumeration of possible states for a UIControl.
UIDataDetectorType	An enumeration of values that are automatically detected in text.
UIDatePickerMode	An enumeration of modes available to the UIDatePicker.
UIDeviceBatteryState	An enumeration of values indicating the state of the battery.
UIDeviceOrientation	An enumeration of device orientations.
UIDisplayGamut	Enumerates display gamuts.
UIDocumentBrowserActionAvailability	Enumerates allowable action locations.
UIDocumentBrowserErrorCode	Enumerates the document browser error code.
UIDocumentBrowserImportMode	Enumerates the import modes of the document browser.
UIDocumentBrowserUserInterfaceStyle	Enumerates document browser styles.
UIDocumentChangeKind	An enumeration indicating what kind of change has occurred to a UIDocument.
UIDocumentMenuOrder	Enumerates the insertion points for custom menu items.
UIDocumentPickerMode	Enumerates the types of file transfer operations used by the document picker.
UIDocumentSaveOperation	An enumeration indicating whether the UIDocument is being saved for the first time or should overwrite an existing save.
UIDocumentState	An enumeration indicating the editing/saving state of a UIDocument.
UIDropOperation	Enumerates drag activity drop resolutions.
UIDropSessionProgressIndicatorStyle	Enumerates drop progress indicator styles.
UIDynamicItemCollisionBoundsType	Enumerates descriptions of collision boundary geometries for dynamic items.
UIEventSubtype	An enumeration of event subtypes.
UIEventType	An enumeration of event types.
UIFocusHeading	A flagging enumeration for specifying the direction in which focus is moving.
UIFontDescriptorAttribute	An enumeration whose values can be passed to GetMatchingFontDescriptors(UIFontDescriptorAttribute[]) to specify which keys must be matched.
UIFontDescriptorSymbolicTraits	Describes some stylistic properties of a typeface (lower 16 bits), and font appearance (top 16 bits), used with UIFontDescriptor.
UIFontTextStyle	Enumerates font styles for parts of a document.
UIFontWeight	Enumerates font weights.
UIForceTouchCapability	Enumerates the 3D Touch capabilities on a device.
UIGestureRecognizerState	An enumeration of states for a UIGestureRecognizer.
UIGraphicsImageRendererFormatRange
UIGuidedAccessAccessibilityFeature
UIGuidedAccessErrorCode
UIGuidedAccessRestrictionState	An enumeration whose values specify whether a Guided Access restriction is in an allow or deny state.
UIImageOrientation	An enumeration of values used to specify the orientation of a UIImage.
UIImagePickerControllerCameraCaptureMode	An enumeration of values used by UIImagePickerControllerCameraCaptureMode.
UIImagePickerControllerCameraDevice	An enumeration of values used by CameraDevice and related functions.
UIImagePickerControllerCameraFlashMode	An enumeration of values used by CameraFlashMode
UIImagePickerControllerImageUrlExportPreset	Enumerates presets for exporting images.
UIImagePickerControllerQualityType	An enumeration of values used to specify video quality.
UIImagePickerControllerSourceType	An enumeration of values used to specify the source using by the UIImagePickerController.
UIImageRenderingMode	An enumeration whose values specify rendering modes for a UIImage.
UIImageResizingMode	An enumeration of values that specify how a UIImage ought to be resized.
UIImpactFeedbackStyle	Enumerates the mass of the objects used by the UIImpactFeedbackGenerator class.
UIInputViewStyle	An enumeration whose value specify the blurring and tinting effects applied to a UIInputView.
UIInterfaceOrientation	An enumeration of values that specify the orientation of the user interface.
UIInterfaceOrientationMask	An enumeration of values that specify the available orientations of the user interface.
UIInterpolatingMotionEffectType	An enumeration whose values specify the axis being monitored by a UIInterpolatingMotionEffect.
UIKeyboardAppearance	The keyboard appearance.
UIKeyboardType	An enumeration of keyboard types.
UIKeyModifierFlags	An enumeration whose values flag the hardware modifier keys associated with a UIKeyCommand.
UILayoutConstraintAxis	An enumeration of values used in flow layouts to specify which axis is being constrained.
UILayoutPriority	An enumeration of values used by flow layouts to prioritize constraints.
UILineBreakMode	An enumeration of values used to specify line break mode.
UIMenuControllerArrowDirection	An enumeration indicating in which direction the arrow of the UIMenuController points.
UIModalPresentationStyle	An enumeration of values used by ModalPresentationStyle
UIModalTransitionStyle	An enumeration of values used to specify the transition style of presented UIViewControllers.
UINavigationControllerOperation	An enumeration whose values specify operations on UINavigationController.
UINavigationItemLargeTitleDisplayMode	Enumerates whether and when large titles are displayed.
UINotificationFeedbackType	Enumerates the types of notification provided by UINotificationFeedbackGenerator.
UIPageViewControllerNavigationDirection	An enumeration indicating the direction of UIPageViewController page turns.
UIPageViewControllerNavigationOrientation	An enumeration indicating the orientation of UIPageViewController page turns.
UIPageViewControllerSpineLocation	An enumeration indicating the location of the spine around which the UIPageViewController transitions occur.
UIPageViewControllerTransitionStyle	An enumeration indicating the transition style of a UIPageViewController.
UIPencilPreferredAction
UIPopoverArrowDirection	An enumeration indicating the direction of the arrow attached to a UIPopoverController.
UIPreferredPresentationStyle	Enumerates how the data from a NSItemProvider should be presented.
UIPressPhase	Enumerates the phases of the button-press life-cycle.
UIPressType	Enumerates button types for UIPress objects (see Type).
UIPreviewActionStyle	Enumeration that defines the various styles of UIPreviewAction objects.
UIPrinterCutterBehavior	Enumerates desired page cutting behavior for roll-feed printers.
UIPrinterJobTypes	Enumerates various types of printing tasks. Used with SupportedJobTypes.
UIPrintError	An enumeration of error codes from the printing system.
UIPrintErrorCode	Enumerates print failure reasons.
UIPrintInfoDuplex	An enumeration of duplex modes supported by the printer.
UIPrintInfoOrientation	An enumeration of printing orientations.
UIPrintInfoOutputType	An enumeration of print content types (e.g., general, photo, grayscale).
UIProgressViewStyle	The visual style for a UIProgressView.
UIPushBehaviorMode	An enumeration whose values specify whether a UIPushBehavior force is applied continuously or instantaneously.
UIRectCorner	An enumeration of the corners of a rectangle.
UIRectEdge	An enumeration whose values specify screen edges, for use with Edges and EdgesForExtendedLayout.
UIRemoteNotificationType	An enumeration of remote notification types.
UIReturnKeyType	An enumeration of styles used for rendering the return key.
UIScreenOverscanCompensation	An enumeration of strategies for dealing with pixels lost at the edge of the screen.
UIScrollViewContentInsetAdjustmentBehavior	Enumerates safe area inset adjustment behaviors.
UIScrollViewIndexDisplayMode	Enumerates index display behavior during scrolling.
UIScrollViewIndicatorStyle	The visual style for a UIScrollView's scroll indicator.
UIScrollViewKeyboardDismissMode	An enumeration whose values specify the mode in which the keyboard is dismissed in a scrollview.
UISearchBarIcon	An enumeration indicating icons available for the search bar.
UISearchBarStyle	An enumeration whose values specify the prominence of the UISearchBar.
UISegmentedControlSegment	An enumeration of locations in a UISegmentedControl.
UISegmentedControlStyle	The visual style for a UISegmentedControl.
UISemanticContentAttribute	Describes a view's contents so that the app dev can control if it should be flipped between left-to-right and right-to-left layouts.
UISplitViewControllerDisplayMode	Enumerates valid display modes for an expanded UISplitViewController.
UISplitViewControllerPrimaryEdge	Enumerates primary view controller locations.
UISpringLoadedInteractionEffectState	Enumerates states for spring-loaded interactions.
UIStackViewAlignment	Enumerates the ways in which a UIStackView can arrange its subviews.
UIStackViewDistribution	How the views in a UIStackView are distributed along the view's alignment axis.
UIStatusBarAnimation	An enumeration of animations available when the status bar is hidden or made visible.
UIStatusBarStyle	The visual style of the status bar.
UISwipeGestureRecognizerDirection	An enumeration of values specifying the directin of a swipe gesture .
UISystemAnimation	An enumeration specifying system animations, i.e., Delete.
UITabBarItemPositioning	An enumeration whose values specify how a UITabBarItem is positioned.
UITabBarSystemItem	An enumeration of predefined UITabBarSystemItems.
UITableViewCellAccessory	An enumeration of standard accessory controls that can be used by a T:UIKIt.UITableViewCell.
UITableViewCellDragState	Enumerates cell states while the cell is involved in a drag operation.
UITableViewCellEditingStyle	An enumeration of editing styles for a UITableView cell.
UITableViewCellFocusStyle	Enumeration whose values define how a UITableViewCell displays when it is focused.
UITableViewCellSelectionStyle	The visual appearance of a UITableViewCell when it is selected.
UITableViewCellSeparatorStyle	The visual style of a UITableView's cell separator.
UITableViewCellState	An enumeration of states for a UITableViewCell.
UITableViewCellStyle	The visual style of a UITableViewCell.
UITableViewDropIntent	Enumerates drop handling options.
UITableViewRowActionStyle	Enumerates characteristics of the button displayed in a table row. Used with the C:UIKit.UITableViewRowAction(UIKit.UITableViewRowActionStyle,string ,Action`1,Foundation.NSIndexPath) constructor.
UITableViewRowAnimation	An enumeration of animations used when rows are inserted or deleted from a table view.
UITableViewScrollPosition	An enumeration of predefined scroll positions.
UITableViewSeparatorInsetReference	Enumerates inset behaviors in a table view.
UITableViewStyle	The visual style for a UITableView. A table view's style can only be set when it is instantiated.
UITextAlignment	An enumeration of text alignments.
UITextAutocapitalizationType	An enumeration of auto-capitalization styles.
UITextAutocorrectionType	An enumeration of auto-correction types.
UITextBorderStyle	An enumeration of visual styles for text borders.
UITextDirection	An enumeration of values that specify text direction.
UITextDragOptions	Enumerates behaviors when dragging text.
UITextDropAction	Enumerates behaviors in response to dropped text.
UITextDropEditability	Enumerates behaviors for noneditable views when receiving dropped text.
UITextDropPerformer	Enumerates the type responsible for the drop operation.
UITextDropProgressMode	Enumerates text drop progress notification styles.
UITextFieldDidEndEditingReason	Enumerates reasons that an editing session ends.
UITextFieldViewMode	An enumeration indicating the behavior of the clear button on a UITextField.
UITextGranularity	An enumeration of values that specify the granularity of a text range .
UITextItemInteraction	Enumerates activities that a user might use with a URL or text attachment.
UITextLayoutDirection	An enumeration indicating the direction of text layout.
UITextSmartDashesType	Enumerates behaviors for converting hyphens to en or em dashes.
UITextSmartInsertDeleteType	Enumerates behaviors for padding insertions and unpadding deletions.
UITextSmartQuotesType	Enumerates smart quote conversion behavior.
UITextSpellCheckingType	An enumeration specifying whether spell-checking is on or off.
UITextStorageDirection	An enumeation indicating the direction in which text is stored.
UITextWritingDirection	An enumeration of writing directions, based on the language.
UITimingCurveType	Enumerates the various types of timing curves.
UIToolbarPosition	An enumeration of the valid positions for a UIToolbar.
UITouchPhase	An enumeration of phases associated with a UITouch.
UITouchProperties	A flagging enumeration of the properties of a UITouch that may change.
UITouchType	Enumerates different kinds of UITouch objects.
UITraitEnvironmentLayoutDirection	Enumerates layout directions.
UITransitionViewControllerKind	Enumerates whether a UIViewController for a transition is associated with the "from" UIView or the "to" UIView. Used with GetTransitionViewController(IUIViewControllerTransitionCoordinatorContext, UITransitionViewControllerKind).
UIUserInterfaceIdiom	An enumeration indicating on what kind of device the UI is running.
UIUserInterfaceLayoutDirection	An enumeration of values specifying the layout direction of the UI.
UIUserInterfaceSizeClass	Enumerates the various interface sizes.
UIUserInterfaceStyle	Enumerates CarPlay and tvOS UI themes.
UIUserNotificationActionBehavior	Enumerates whether the user may respond to a user notification with text input.
UIUserNotificationActionContext	Enumerates the amount of space available for a UIUserNotificationAction. Used with SetActions(UIUserNotificationAction[], UIUserNotificationActionContext)
UIUserNotificationActivationMode	Whether a UIUserNotificationAction should run the app in foreground or background mode.
UIUserNotificationType	Enumerates the various types of user notification. Can be "OR"ed together as flags.
UIViewAnimatingPosition	Enumerates the endpoints and current position of an animation.
UIViewAnimatingState	Enumerates animation states.
UIViewAnimationCurve	An enumeration of animation curve styles.
UIViewAnimationOptions	An enumeration indicating animation options.
UIViewAnimationTransition	An enumeration of predefined animated transitions.
UIViewAutoresizing	An enumeration indicating the resizing style for UIViews.
UIViewContentMode	An enumeration indicating how the cached bitmap of a view must be rendered when the view's bounds change.
UIViewKeyframeAnimationOptions	An enumeration whose values specify valid options for the AnimateKeyframes(Double, Double, UIViewKeyframeAnimationOptions, Action, UICompletionHandler) method.
UIViewTintAdjustmentMode	An enumeration whose values specify adjustment modes for TintAdjustmentMode.
UIWebPaginationBreakingMode	An enumeration whose values specify whether a UIWebView's PaginationMode should break by columns or page.
UIWebPaginationMode	An enumeration whose values specify valid page-break modes for the UIWebView's PaginationMode property.
UIWebViewNavigationType	An enumeration of navigation types for use in a UIWebView.

Delegates

NSFileProviderExtensionFetchThumbnailsHandler	Delegate for handling a thumbnail fetch operation.
NSTextLayoutEnumerateEnclosingRects	A delegate used as the callback in EnumerateEnclosingRects(NSRange, NSRange, NSTextContainer, NSTextLayoutEnumerateEnclosingRects).
NSTextLayoutEnumerateLineFragments	A delegate used as the callback in EnumerateLineFragments(NSRange, NSTextLayoutEnumerateLineFragments).
ShouldDismiss	Delegate for ShouldDismissPopover.
UIAccessibilityCustomRotorSearch
UIActivityViewControllerCompletion	The callback executed after a UIActivityViewController is dismissed.
UIAlertViewPredicate	A delegate for use with ShouldEnableFirstOtherButton.
UIApplicationRestorationHandler	Delegate of ContinueUserActivity(UIApplication, NSUserActivity, UIApplicationRestorationHandler) method. Can manipulate objects created or retrieved by the activity.
UICloudSharingControllerPreparationCompletionHandler
UICloudSharingControllerPreparationHandler
UICollectionViewLayoutInteractiveTransitionCompletion	A delegate used as the completion handler for StartInteractiveTransition(UICollectionViewLayout, UICollectionViewLayoutInteractiveTransitionCompletion).
UICompletionHandler	A strongly-typed delegate called at completion of certain lengthy calculations.
UIContextualActionCompletionHandler	An action to run after a UIContextualActionHandler completes.
UIContextualActionHandler	An action to run when the user presses a UIContextualAction button.
UIDocumentInteractionProbe	A delegate signature for determining whether a document operation should take place.
UIDocumentInteractionRectangle	A delegate signature for getting the region used for previewing.
UIDocumentViewController	Delegate signature used to pass a UIDocumentInteractionController in callbacks from UIDocumentInteractionController.
UIDocumentViewForPreview	A delegate signature for getting the UIView responsible for rendering the preview of a UIDocumentInteractionController.
UIFieldCustomEvaluator
UIGestureProbe	A delegate signature used by the UIGestureRecognizer class to determine if a gesture can be initiated.
UIGesturesPress
UIGesturesProbe	A delegate associated with ShouldRecognizeSimultaneously.
UIGuidedAccessRestriction.UIGuidedAccessConfigureAccessibilityFeaturesCompletionHandler
UIImage.SaveStatus	A delegate signature for getting a notification when the file has been saved.
UIOperationHandler	A delegate used at the completion of operations.
UIPageViewGetNumber	A delegate used with GetPresentationCount and GetPresentationIndex.
UIPageViewGetViewController	A delegate used with GetNextViewController and GetPreviousViewController.
UIPageViewSpineLocationCallback	A delegate used with GetSpineLocation.
UIPopoverControllerCondition	A delegate used with ShouldDismiss.
UIPreviewHandler
UIPrinterContactPrinterHandler	Completion handler used with ContactPrinter(UIPrinterContactPrinterHandler).
UIPrinterPickerCompletionHandler	Completion handler used with various UIPrinterPickerController presentation methods.
UIPrintInteraction	A delegate signature to return a UIViewController for a UIPrintInteractionController.
UIPrintInteractionCompletionHandler	A delegate executed after printing completes or after a printing error occurs.
UIPrintInteractionCutterBehavior
UIPrintInteractionPaperList	A delegate for returning the array of paper formats available for the printer.
UIScrollViewCondition	A delegate allowing fine-grained control of the scroll-to-top gesture.
UIScrollViewGetZoomView	A delegate signature used by UIScrollView's ViewForZoomingInScrollView that specifies which view to render during zoom.
UISearchBarPredicate	A delegate used with ShouldBeginEditing and ShouldEndEditing to specify editing beginning and ending events.
UISearchBarRangeEventArgs	A delegate used with the ShouldChangeTextInRange property.
UISplitViewControllerCanCollapsePredicate	Return true if the secondary UIViewController is allowed to collapse. Used with CollapseSecondViewController.
UISplitViewControllerDisplayEvent	Delegate for the EventShowViewController and EventShowDetailViewController properties.
UISplitViewControllerFetchTargetForActionHandler	Delegate for the GetTargetDisplayModeForAction property.
UISplitViewControllerGetSecondaryViewController	Delegate for the SeparateSecondaryViewController property.
UISplitViewControllerGetViewController	Delegate for the GetPrimaryViewControllerForCollapsingSplitViewController property.
UISplitViewControllerHidePredicate	A delegate used in conjunction with ShouldHideViewController.
UITabBarSelection	The delegate associated with the ShouldSelectViewController event.
UITextFieldChange	A delegate used to respond to changes on the UITextField.
UITextFieldCondition	A delegate used to get the condition for a UITextField.
UITextViewChange	A delegate signature used to notify and process changes on a UITextView
UITextViewCondition	A delegate signature for a UITextView condition.
UITextViewDelegateShouldInteractTextDelegate	Delegate for determining whether a text view should interact with a text attachment.
UITextViewDelegateShouldInteractUrlDelegate	Delegate for determining whether a text view should interact with a URL.
UITouchEventArgs	A delegate used in conjunction with the ShouldReceiveTouch property.
UIVideo.SaveStatus	A delegate signature that is invoked after the video is saved.
UIWebLoaderControl	A delegate used by the UIWebView class.

Remarks

MonoTouch.UIKit is a binding to CocoaTouch's widget set. Use the classes in this space to create native user interfaces with iOS UIKit.

iOS Applications start as instances of the UIApplication class, they can either be an instance of UIApplication or a subclass of UIApplication. This UIApplication object will invoke a number of methods in response to starting up, shutting down, going to the background and other interesting events by calling methods on an instace of the UIApplicationDelegate class. Most applications will override the M:UIKit.UIApplicationDelegate.FinishedLaunching* which is responsible for creating the main UIWindow and configuring the topmost UIViewController to display.

Most applications will create a single UIWindow, windows work in concert with UIViewController objects which are in charge of orchestrating multiple views, handle rotation and handle various events for the application. This is why on startup, application developers must create both a window and sets its root view controller, like this:

[Register ("AppDelegate")]
public partial class AppDelegate : UIApplicationDelegate
{
	UIWindow window;

	public override bool FinishedLaunching (UIApplication app, NSDictionary options)
	{
		window = new UIWindow (UIScreen.MainScreen.Bounds);
		window.RootViewController = new UIViewController ();
		window.MakeKeyAndVisible ();

		return true;
	}
}

Response to user input is implemented in UIKit by subclasses of UIResponder: UIApplication, UIViewControllers and their subclasses and UIView and their subclasses all inherit from this class.

TextKit

Starting with iOS 7, the text rendering engine exposed on UIKit was upgraded to expose a wide range of typographical capabilities. This functionality was previously only available when using the low-level N:CoreText APIs. On iOS6, the "AttributedText" property was surfaced and application developers were limited to what was supported by attributed text, with iOS7, developers have access to the "TextStorage" property which provides full control of how things are rendered.

TextKit supports: paginated text, text in columns, text wrapping, rich text editing, interactive text coloring, text folding, custom truncation, and dynamic type.

The TextKit family of APIs provide a modern and sophisticated text layout and rendering engine integrated right into UIKit. This means that you can control the finer details of text rendering on UIKit elements as well as integrating this with animations. Because of this the controls in UIKit support all text attributes and features like kernings and ligatures as well as text effects like Letterpress.

Starting with iOS7 controls like UILabel, UITextField and UITextView are implemented using TextKit directly, the same engine that powers WebKit (the UIWebView control).

Dynamic Type

In iOS 7, Apple introduced system-wide dynamic type, a set of fonts optimized for legibility at different magnifications. The end user selects the preferred size of dynamic text in device Settings. Applications receive the ContentizeCategoryChanged notification (see ObserveContentSizeCategoryChanged) and should reset the font size throughout their application's text views. The system-selected optimal fonts adjust such things as stroke weight and kerning as well as size, so application developers should use UIFonts Preferred* properties (e.g., PreferredBody, PreferredHeadline, etc. ), as shown in the following example:

UIApplication.Notifications.ObserveContentSizeCategoryChanged((s,e) => {
	SetDynamicTypeFonts();
});

//Call this when initializing, and also in response to ObserveContentSizeCategoryChanged notifications
private void SetDynamicTypeFonts()
{
	headlineLabel.Font = UIFont.PreferredHeadline;
	bodyText.Font = UIFont.PreferredBody;
  //...etc...
}