UIPinchGestureRecognizer Class

Reference

Definition

Namespace:: UIKit

Assembly:: Xamarin.iOS.dll

Important

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Gesture recognizer for pinches.

[Foundation.Register("UIPinchGestureRecognizer", true)]
[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.TvOS, ObjCRuntime.PlatformArchitecture.All, null)]
public class UIPinchGestureRecognizer : UIKit.UIGestureRecognizer

type UIPinchGestureRecognizer = class
    inherit UIGestureRecognizer

Inheritance: Object

NSObject

UIGestureRecognizer
UIPinchGestureRecognizer

Attributes: RegisterAttribute UnavailableAttribute

Constructors

UIPinchGestureRecognizer()	Default constructor that initializes a new instance of this class with no parameters.
UIPinchGestureRecognizer(Action)
UIPinchGestureRecognizer(Action<UIPinchGestureRecognizer>)	Constructs a gesture recognizer and provides a method to invoke when the gesture is recognized.
UIPinchGestureRecognizer(IntPtr)	A constructor used when creating managed representations of unmanaged objects; Called by the runtime.
UIPinchGestureRecognizer(NSObject, Selector)
UIPinchGestureRecognizer(NSObjectFlag)	Constructor to call on derived classes to skip initialization and merely allocate the object.

Properties

AllowedPressTypes	An array of UIPressType that the gesture recognizer responds to. (Inherited from UIGestureRecognizer)
AllowedTouchTypes	An array of UITouchType that the gesture recognizer responds to. (Inherited from UIGestureRecognizer)
CancelsTouchesInView	Whether touches recognized as part of a gesture should be delivered to the underlying UIView. (Inherited from UIGestureRecognizer)
Class	(Inherited from NSObject)
ClassHandle	The handle for this class.
DebugDescription	A developer-meaningful description of this object. (Inherited from NSObject)
DelaysTouchesBegan	Whether this UIGestureRecognizer should delay sending touches to the underlying UIVew during the gesture's begin phase. (Inherited from UIGestureRecognizer)
DelaysTouchesEnded	Whether this UIGestureRecgonizer should delay sending touches to the underlying UIView during the gesture's end phase. (Inherited from UIGestureRecognizer)
Delegate	An instance of the UIKit.IUIGestureRecognizerDelegate model class which acts as the class delegate. (Inherited from UIGestureRecognizer)
Description	Description of the object, the Objective-C version of ToString. (Inherited from NSObject)
Enabled	Whether the UIGestureRecognizer is enabled. (Inherited from UIGestureRecognizer)
Handle	Handle (pointer) to the unmanaged object representation. (Inherited from NSObject)
IsDirectBinding	(Inherited from NSObject)
IsProxy	(Inherited from NSObject)
Name	Gets or set the name of the recognizer. (Inherited from UIGestureRecognizer)
NumberOfTouches	The number of touches involved in the gesture. (Inherited from UIGestureRecognizer)
RequiresExclusiveTouchType	Gets or sets whether the UIGestureRecognizer is only considering a single type of touch. (Inherited from UIGestureRecognizer)
RetainCount	Returns the current Objective-C retain count for the object. (Inherited from NSObject)
Scale	The scale factor relative to the points of the two touches, in screen coordinates.
Self	(Inherited from NSObject)
ShouldBegin	Delegate invoked by the object to get a value. (Inherited from UIGestureRecognizer)
ShouldBeRequiredToFailBy	Delegate invoked by the object to get a value. (Inherited from UIGestureRecognizer)
ShouldReceivePress	Delegate invoked by the object to get a value. (Inherited from UIGestureRecognizer)
ShouldReceiveTouch	Delegate invoked by the object to get a value. (Inherited from UIGestureRecognizer)
ShouldRecognizeSimultaneously	Delegate invoked by the object to get a value. (Inherited from UIGestureRecognizer)
ShouldRequireFailureOf	Delegate invoked by the object to get a value. (Inherited from UIGestureRecognizer)
State	The current state of this UIGestureRecognizer. (Inherited from UIGestureRecognizer)
Superclass	(Inherited from NSObject)
SuperHandle	Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject)
Velocity	The velocity, in scale factor per second, of the pinch.
View	The UIView to which this UIGestureRecognizer is attached. Read-only. (Inherited from UIGestureRecognizer)
WeakDelegate	An object that can respond to the delegate protocol for this type (Inherited from UIGestureRecognizer)
Zone	(Inherited from NSObject)

Methods

AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr)	Registers an object for being observed externally (using NSString keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject)
AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr)	Registers an object for being observed externally (using string keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject)
AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>)	Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject)
AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>)	Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject)
AddTarget(Action)	Registers a new callback for when the gesture has been recognized. (Inherited from UIGestureRecognizer)
AddTarget(Action<NSObject>)	Registers a new callback for when the gesture has been recognized. (Inherited from UIGestureRecognizer)
AddTarget(NSObject, Selector)	Low-level version of AddTarget. (Inherited from UIGestureRecognizer)
AwakeFromNib()	Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib(). (Inherited from NSObject)
BeginInvokeOnMainThread(Action)	(Inherited from NSObject)
BeginInvokeOnMainThread(Selector, NSObject)	Invokes asynchrously the specified code on the main UI thread. (Inherited from NSObject)
Bind(NSString, NSObject, String, NSDictionary)	(Inherited from NSObject)
Bind(String, NSObject, String, NSDictionary)	Obsolete. (Inherited from NSObject)
BindingInfo(String)	Obsolete. (Inherited from NSObject)
BindingOptionDescriptions(String)	Obsolete. (Inherited from NSObject)
BindingValueClass(String)	Obsolete. (Inherited from NSObject)
CanBePreventedByGestureRecognizer(UIGestureRecognizer)	When overridden, allows the specified UIGestureRecognizer to prevent this UIGestureRecognizer from recognizing a gesture. (Inherited from UIGestureRecognizer)
CanPreventGestureRecognizer(UIGestureRecognizer)	When overridden, indicates that this UIGestureRecognizer can prevent the specified UIGestureRecognizer from recognizing a gesture. (Inherited from UIGestureRecognizer)
CommitEditing()	(Inherited from NSObject)
CommitEditing(NSObject, Selector, IntPtr)	(Inherited from NSObject)
ConformsToProtocol(IntPtr)	Invoked to determine if this object implements the specified protocol. (Inherited from NSObject)
Copy()	Performs a copy of the underlying Objective-C object. (Inherited from NSObject)
DangerousAutorelease()	(Inherited from NSObject)
DangerousRelease()	(Inherited from NSObject)
DangerousRetain()	(Inherited from NSObject)
DidChange(NSKeyValueChange, NSIndexSet, NSString)	Indicates a change occurred to the indexes for a to-many relationship. (Inherited from NSObject)
DidChange(NSString, NSKeyValueSetMutationKind, NSSet)	(Inherited from NSObject)
DidChangeValue(String)	Indicates that a change occurred on the specified key. (Inherited from NSObject)
Dispose()	Releases the resources used by the NSObject object. (Inherited from NSObject)
Dispose(Boolean)	Releases the resources used by the UIGestureRecognizer object. (Inherited from UIGestureRecognizer)
DoesNotRecognizeSelector(Selector)	Indicates that this object does not recognize the specified selector. (Inherited from NSObject)
Equals(NSObject)	(Inherited from NSObject)
Equals(Object)	(Inherited from NSObject)
ExposedBindings()	(Inherited from NSObject)
GetBindingInfo(NSString)	(Inherited from NSObject)
GetBindingOptionDescriptions(NSString)	(Inherited from NSObject)
GetBindingValueClass(NSString)	(Inherited from NSObject)
GetDictionaryOfValuesFromKeys(NSString[])	Retrieves the values of the specified keys. (Inherited from NSObject)
GetHashCode()	Generates a hash code for the current instance. (Inherited from NSObject)
GetMethodForSelector(Selector)	(Inherited from NSObject)
GetNativeField(String)	Obsolete. (Inherited from NSObject)
GetNativeHash()	(Inherited from NSObject)
GetTargets()	(Inherited from UIGestureRecognizer)
IgnorePress(UIPress, UIPressesEvent)	Developers may override this method to tell the gesture recognizer to ignore specific presses. (Inherited from UIGestureRecognizer)
IgnoreTouch(UITouch, UIEvent)	Ignores a specific touch of the given event. (Inherited from UIGestureRecognizer)
Init()	(Inherited from NSObject)
InitializeHandle(IntPtr, String)	(Inherited from NSObject)
InitializeHandle(IntPtr)	(Inherited from NSObject)
Invoke(Action, Double)	(Inherited from NSObject)
Invoke(Action, TimeSpan)	(Inherited from NSObject)
InvokeOnMainThread(Action)	(Inherited from NSObject)
InvokeOnMainThread(Selector, NSObject)	Invokes synchrously the specified code on the main UI thread. (Inherited from NSObject)
IsEqual(NSObject)	(Inherited from NSObject)
IsKindOfClass(Class)	(Inherited from NSObject)
IsMemberOfClass(Class)	(Inherited from NSObject)
LocationInView(UIView)	The PointF in the given UIView of the gesture represented by this UIGestureRecognizer. (Inherited from UIGestureRecognizer)
LocationOfTouch(nint, UIView)	Gets the location, in the coordinate system of , of one of the touches in the gesture. (Inherited from UIGestureRecognizer)
MarkDirty()	Promotes a regular peer object (IsDirectBinding is true) into a toggleref object. (Inherited from NSObject)
MutableCopy()	Creates a mutable copy of the specified NSObject. (Inherited from NSObject)
ObjectDidEndEditing(NSObject)	(Inherited from NSObject)
ObserveValue(NSString, NSObject, NSDictionary, IntPtr)	Indicates that the value at the specified keyPath relative to this object has changed. (Inherited from NSObject)
PerformSelector(Selector, NSObject, Double, NSString[])	(Inherited from NSObject)
PerformSelector(Selector, NSObject, Double)	Invokes the selector on the current instance and if the `obj` is not null, it passes this as its single parameter. (Inherited from NSObject)
PerformSelector(Selector, NSObject, NSObject)	(Inherited from NSObject)
PerformSelector(Selector, NSObject)	(Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[])	(Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean)	(Inherited from NSObject)
PerformSelector(Selector)	(Inherited from NSObject)
PrepareForInterfaceBuilder()	(Inherited from NSObject)
PressesBegan(NSSet<UIPress>, UIPressesEvent)	Indicates that a physical button has been pressed on a remote or game controller. (Inherited from UIGestureRecognizer)
PressesCancelled(NSSet<UIPress>, UIPressesEvent)	Indicates a physical button-press event has been cancelled due to a system event. (Inherited from UIGestureRecognizer)
PressesChanged(NSSet<UIPress>, UIPressesEvent)	Indicates that the Force value of the `evt` has changed. (Inherited from UIGestureRecognizer)
PressesEnded(NSSet<UIPress>, UIPressesEvent)	Indicates the ending of a press of a physical button on a remote or game controller. (Inherited from UIGestureRecognizer)
RemoveObserver(NSObject, NSString, IntPtr)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject)
RemoveObserver(NSObject, NSString)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject)
RemoveObserver(NSObject, String, IntPtr)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject)
RemoveObserver(NSObject, String)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject)
RemoveTarget(NSObject, Selector)	Low-level counterpart to the low-level AddTarget method. (Inherited from UIGestureRecognizer)
RemoveTarget(UIGestureRecognizer+Token)	Removes the callback method for the specified gesture being recognized, based on the token that was returned by AddTarget. (Inherited from UIGestureRecognizer)
RequireGestureRecognizerToFail(UIGestureRecognizer)	Causes this UIGestureRecognizer to only work if the specified UIGestureRecognizer fails (e.g., a single-tap gesture might require that a double-tap gesture fail). (Inherited from UIGestureRecognizer)
Reset()	When overridden, allows the application developer to reset internal state when a gesture is recognized. (Inherited from UIGestureRecognizer)
RespondsToSelector(Selector)	Whether this object recognizes the specified selector. (Inherited from NSObject)
SetNativeField(String, NSObject)	Obsolete. (Inherited from NSObject)
SetNilValueForKey(NSString)	Sets the value of the specified key to null. (Inherited from NSObject)
SetValueForKey(NSObject, NSString)	Sets the value of the property specified by the key to the specified value. (Inherited from NSObject)
SetValueForKeyPath(IntPtr, NSString)	A constructor used when creating managed representations of unmanaged objects; Called by the runtime. (Inherited from NSObject)
SetValueForKeyPath(NSObject, NSString)	Sets the value of a property that can be reached using a keypath. (Inherited from NSObject)
SetValueForUndefinedKey(NSObject, NSString)	Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject)
SetValuesForKeysWithDictionary(NSDictionary)	Sets the values of this NSObject to those in the specified dictionary. (Inherited from NSObject)
ShouldBeRequiredToFailByGestureRecognizer(UIGestureRecognizer)	Specifically overridden to indicate that a receiver requires the specified gesture recognizer to fail. (Inherited from UIGestureRecognizer)
ShouldRequireFailureOfGestureRecognizer(UIGestureRecognizer)	Returns a value that tells whether the receiver requires `otherGestureRecognizer` to fail. (Inherited from UIGestureRecognizer)
ToString()	Returns a string representation of the value of the current instance. (Inherited from NSObject)
TouchesBegan(NSSet, UIEvent)	Indicates that one or more fingers have touched down in the associated UIView. (Inherited from UIGestureRecognizer)
TouchesCancelled(NSSet, UIEvent)	Indicates that a system event (e.g., a low-memory warning) has cancelled the touch event. (Inherited from UIGestureRecognizer)
TouchesEnded(NSSet, UIEvent)	Indicates that one or more fingers have lifted in the associated UIView. (Inherited from UIGestureRecognizer)
TouchesEstimatedPropertiesUpdated(NSSet)	Called when the estimated properties of `touches` have been updated. (Inherited from UIGestureRecognizer)
TouchesMoved(NSSet, UIEvent)	Indicates that one or more fingers have moved in the associated UIView. (Inherited from UIGestureRecognizer)
Unbind(NSString)	(Inherited from NSObject)
Unbind(String)	Obsolete. (Inherited from NSObject)
ValueForKey(NSString)	Returns the value of the property associated with the specified key. (Inherited from NSObject)
ValueForKeyPath(NSString)	Returns the value of a property that can be reached using a keypath. (Inherited from NSObject)
ValueForUndefinedKey(NSString)	Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject)
WillChange(NSKeyValueChange, NSIndexSet, NSString)	Indicates that the values of the specified indices in the specified key are about to change. (Inherited from NSObject)
WillChange(NSString, NSKeyValueSetMutationKind, NSSet)	(Inherited from NSObject)
WillChangeValue(String)	Indicates that the value of the specified key is about to change. (Inherited from NSObject)

Extension Methods

GetDebugDescription(INSObjectProtocol)
GetAccessibilityCustomRotors(NSObject)	Gets the array of UIAccessibilityCustomRotor objects appropriate for `this` object.
SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[])	Sets the array of UIAccessibilityCustomRotor objects appropriate for `this` object.

Applies to

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