crossmobile.ios.uikit

Class UIRotationGestureRecognizer

java.lang.Object

crossmobile.ios.foundation.NSObject

crossmobile.ios.uikit.UIGestureRecognizer

crossmobile.ios.uikit.UIRotationGestureRecognizer

public class UIRotationGestureRecognizer
extends UIGestureRecognizer

UIRotationGestureRecognizer class extends UIGestureRecognizer and recognizes rotation gestures when two fingers touch the screen and move in opposite directions formulating a circle.

Constructor Summary

Constructors

Constructor and Description
UIRotationGestureRecognizer(NSSelector<UIGestureRecognizer> target) Constructs a UIRotationGestureRecognizer and connects is with the specified UIGestureRecognizer.

Method Summary

Modifier and Type	Method and Description
boolean	canBePreventedByGestureRecognizer(UIGestureRecognizer preventing) Override this method so that the specified UIGestureRecognizer prevents this UIGestureRecognizer from recognizing a gesture.
boolean	canPreventGestureRecognizer(UIGestureRecognizer preventing) Override this method so that this UIGestureRecognizer prevents the specified UIGestureRecognizer from recognizing a gesture.
void	reset() Resets internal state when the gesture recognition is completed.
double	rotation() Returns the rotation of the gesture.
void	setRotation(double rotation) Sets the rotation of the gesture and resets the velocity value.
void	touchesBegan(Set<UITouch> touches, UIEvent event) Informs this UIGestureRecognizer when one or more fingers touched down in the associated UIView.
void	touchesCancelled(Set<UITouch> touches, UIEvent event) Informs this UIGestureRecognizer that a touch event was canceled due to system event.
void	touchesEnded(Set<UITouch> touches, UIEvent event) Informs this UIGestureRecognizer when one or more fingers were lifted from the associated view.
void	touchesMoved(Set<UITouch> touches, UIEvent event) Informs this UIGestureRecognizer when one or more fingers were moved within the associated view.
double	velocity() Returns the velocity of the gesture.Expressed in radians per seconds.

Methods inherited from class crossmobile.ios.uikit.UIGestureRecognizer

addTarget, cancelsTouchesInView, delaysTouchesBegan, delaysTouchesEnded, delegate, isEnabled, locationInView, locationOfTouch, numberOfTouches, removeTarget, requireGestureRecognizerToFail, setCancelsTouchesInView, setDelaysTouchesBegan, setDelaysTouchesEnded, setDelegate, setEnabled, state, toString, view

Methods inherited from class crossmobile.ios.foundation.NSObject

addObserver, observeValueForKeyPath, performSelector, performSelectorOnMainThread, release, removeObserver, removeObserver, retain, setValueForKey, setValueForUndefinedKey, valueForKey, valueForUndefinedKey

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

UIRotationGestureRecognizer

public UIRotationGestureRecognizer(NSSelector<UIGestureRecognizer> target)

Constructs a UIRotationGestureRecognizer and connects is with the specified UIGestureRecognizer.

Parameters:

target - The UIGestureRecognizer to which the new UIRotationGestureRecognizer is connected to.

Method Detail

rotation

public double rotation()

Returns the rotation of the gesture.

Returns:

The rotation of the gesture expressed in radians.

setRotation

public void setRotation(double rotation)

Sets the rotation of the gesture and resets the velocity value.

Parameters:

rotation - The rotation of the gesture expressed in radians.

velocity

public double velocity()

Returns the velocity of the gesture.Expressed in radians per seconds.

Returns:

The velocity of the gesture.

reset

public void reset()

Description copied from class: UIGestureRecognizer

Resets internal state when the gesture recognition is completed.

Overrides:

reset in class UIGestureRecognizer

touchesBegan

public void touchesBegan(Set<UITouch> touches,
                         UIEvent event)

Description copied from class: UIGestureRecognizer

Informs this UIGestureRecognizer when one or more fingers touched down in the associated UIView.

Overrides:

touchesBegan in class UIGestureRecognizer

Parameters:

touches - The set of touches until the UITouchPhaseCancelled phase.

event - The event to which the touches belong.

touchesMoved

public void touchesMoved(Set<UITouch> touches,
                         UIEvent event)

Description copied from class: UIGestureRecognizer

Informs this UIGestureRecognizer when one or more fingers were moved within the associated view.

Overrides:

touchesMoved in class UIGestureRecognizer

Parameters:

touches - The set of touches until the UITouchPhaseCancelled phase.

event - The event to which the touches belong.

touchesEnded

public void touchesEnded(Set<UITouch> touches,
                         UIEvent event)

Description copied from class: UIGestureRecognizer

Informs this UIGestureRecognizer when one or more fingers were lifted from the associated view.

Overrides:

touchesEnded in class UIGestureRecognizer

Parameters:

touches - The set of touches until the UITouchPhaseCancelled phase.

event - The event to which the touches belong.

touchesCancelled

public void touchesCancelled(Set<UITouch> touches,
                             UIEvent event)

Description copied from class: UIGestureRecognizer

Informs this UIGestureRecognizer that a touch event was canceled due to system event.

Overrides:

touchesCancelled in class UIGestureRecognizer

Parameters:

touches - The set of touches until the UITouchPhaseCancelled phase.

event - The event to which the touches belong.

canBePreventedByGestureRecognizer

public boolean canBePreventedByGestureRecognizer(UIGestureRecognizer preventing)

Description copied from class: UIGestureRecognizer

Override this method so that the specified UIGestureRecognizer prevents this UIGestureRecognizer from recognizing a gesture.

Specified by:

canBePreventedByGestureRecognizer in class UIGestureRecognizer

Parameters:

preventing - The UIGestureRecognizer that prevents this gesture recognizer from recognizing a gesture.

Returns:

TRUE then the specified UIGestureRecognizer is able to prevent the recognition of a gesture.

canPreventGestureRecognizer

public boolean canPreventGestureRecognizer(UIGestureRecognizer preventing)

Description copied from class: UIGestureRecognizer

Override this method so that this UIGestureRecognizer prevents the specified UIGestureRecognizer from recognizing a gesture.

Specified by:

canPreventGestureRecognizer in class UIGestureRecognizer

Parameters:

preventing - The UIGestureRecognizer that is prevented from recognizing a gesture.

Returns:

TRUE then this UIGestureRecognizer is able to prevent the recognition of a gesture.