@Override
  public void getTransform(Matrix transform) {
    getParentTransform(transform);
    // IMPORTANT: {@code configureBounds} should be called after {@code getParentTransform},
    // because the parent may have to change our bounds.
    configureBoundsIfUnderlyingChanged();
    if (mDrawMatrix != null) {
      transform.preConcat(mDrawMatrix);
    }
  }
@ Override public void getTransform ( Matrix transform ) { getParentTransform ( transform ) ; configureBoundsIfUnderlyingChanged ( ) ; if ( mDrawMatrix != null ) { transform . preConcat ( mDrawMatrix ) ; } }
TransformationCallback method
@param transform