RotateGestureDetector.SimpleOnRotateGestureListener
extends Objectimplements RotateGestureDetector.OnRotateGestureListener
| java.lang.Object | |
| ↳ | sofia.view.RotateGestureDetector.SimpleOnRotateGestureListener |
Class Overview
A convenience class to extend when you only want to listen for a subset
of rotation-related events. This implements all methods in
RotateGestureDetector.OnRotateGestureListener but does nothing.
onRotate(RotateGestureDetector) returns
false so that a subclass can retrieve the accumulated rotation
factor in an overridden onRotateEnd.
onRotateBegin(RotateGestureDetector) returns
true.
Summary
| Public Constructors | |||||||||||
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| RotateGestureDetector.SimpleOnRotateGestureListener() | |||||||||||
| Public Methods | |||||||||||
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| boolean |
onRotate(RotateGestureDetector detector)
Responds to rotation events for a gesture in progress.
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| boolean |
onRotateBegin(RotateGestureDetector detector)
Responds to the beginning of a rotation gesture.
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| void |
onRotateEnd(RotateGestureDetector detector)
Responds to the end of a rotation gesture.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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From interface
sofia.view.RotateGestureDetector.OnRotateGestureListener
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Public Constructors
public RotateGestureDetector.SimpleOnRotateGestureListener ()
Public Methods
public boolean onRotate (RotateGestureDetector detector)
Responds to rotation events for a gesture in progress. Reported by pointer motion.
Parameters
| detector | The detector reporting the event - use this to retrieve extended info about event state. |
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Returns
- Whether or not the detector should consider this event as handled. If an event was not handled, the detector will continue to accumulate movement until an event is handled. This can be useful if an application, for example, only wants to update rotation factors if the change is greater than 0.01.
public boolean onRotateBegin (RotateGestureDetector detector)
Responds to the beginning of a rotation gesture. Reported by new pointers going down.
Parameters
| detector | The detector reporting the event - use this to retrieve extended info about event state. |
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Returns
- Whether or not the detector should continue recognizing this gesture. For example, if a gesture is beginning with a focal point outside of a region where it makes sense, onRotateBegin() may return false to ignore the rest of the gesture.
public void onRotateEnd (RotateGestureDetector detector)
Responds to the end of a rotation gesture. Reported by existing pointers going up. Once a rotation has ended, RotateGestureDetector#getFocusX() and RotateGestureDetector#getFocusY() will return the location of the pointer remaining on the screen.
Parameters
| detector | The detector reporting the event - use this to retrieve extended info about event state. |
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