question: adds a new zoom listener . concode_field_sep Pan mPan concode_elem_sep RectF zoomR concode_elem_sep Zoom mPinchZoom concode_elem_sep float oldX concode_elem_sep float oldY concode_elem_sep GraphicalView graphicalView concode_elem_sep DefaultRenderer mRenderer concode_elem_sep float oldY2 concode_elem_sep float oldX2 concode_field_sep void removePanListener concode_elem_sep float getOldX concode_elem_sep void addPanListener concode_elem_sep boolean handleTouchControl concode_elem_sep float getOldY concode_elem_sep void removeZoomListener concode_elem_sep boolean handleTouch
target: void function ( ZoomListener arg0 ) { if ( mPinchZoom != null ) { mPinchZoom . addZoomListener ( arg0 ) ; } }