OnScaleGestureListener 2.4.2 API

```
public interface ScaleGestureDetector.OnScaleGestureListener

                    
```
The listener for receiving notifications when gestures occur.If you want to listen for all the different gestures then implementthis interface. If you only want to listen for a subset it mightbe easier to extend SimpleOnScaleGestureListener.An application will receive events in the following order:
- One onScaleBegin
- Zero or more onScale
- One onScaleEnd

Method Summary

Modifier and Type	Method	Description
`abstract boolean`	`onScale(ScaleGestureDetector detector)`	Responds to scaling events for a gesture in progress.Reported by pointer motion.
`abstract boolean`	`onScaleBegin(ScaleGestureDetector detector)`	Responds to the beginning of a scaling gesture.
`abstract void`	`onScaleEnd(ScaleGestureDetector detector)`	Responds to the end of a scale gesture.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - onScale
```
 abstract boolean onScale(ScaleGestureDetector detector)
```
    Responds to scaling events for a gesture in progress.Reported by pointer motion.
    
    Parameters:
    
    detector - The detector reporting the event - use this toretrieve extended info about event state.
  - onScaleBegin
```
 abstract boolean onScaleBegin(ScaleGestureDetector detector)
```
    Responds to the beginning of a scaling gesture. Reported bynew pointers going down.
    
    Parameters:
    
    detector - The detector reporting the event - use this toretrieve extended info about event state.
  - onScaleEnd
```
 abstract void onScaleEnd(ScaleGestureDetector detector)
```
    Responds to the end of a scale gesture. Reported by existingpointers going up.Once a scale has ended, getFocusX and getFocusY will return focal pointof the pointers remaining on the screen.
    
    Parameters:
    
    detector - The detector reporting the event - use this toretrieve extended info about event state.