Package io.rong.imkit.picture.photoview

## Interface OnScaleChangedListener

- All Implemented Interfaces:

      public interface OnScaleChangedListener

  Interface definition for callback to be invoked when attached ImageView scale changes

- - ### Nested Class Summary

    Nested Classes
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  - ### Field Summary

    Fields
    Modifier and Type | Field | Description
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  - ### Constructor Summary

    Constructors
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  - ### Enum Constant Summary

    Enum Constants
    Enum Constant | Description
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  - ### Method Summary

    Modifier and Type | Method | Description
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    `abstract void` | `onScaleChange(float scaleFactor, float focusX, float focusY)` | Callback for when the scale changes

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

  - ### Method Detail

    - #### onScaleChange

           abstract void onScaleChange(float scaleFactor, float focusX, float focusY)

      Callback for when the scale changes

      Parameters:
        `scaleFactor` - the scale factor (less than 1 for zoom out, greater than 1 for zoom in)
        `focusX` - focal point X position
        `focusY` - focal point Y position