return the time difference in milliseconds between the previous accepted gesturedetector event and the current gesturedetector event . concode_field_sep float mCurrPressure concode_elem_sep MotionEvent mCurrEvent concode_elem_sep float PRESSURE_THRESHOLD concode_elem_sep float mPrevPressure concode_elem_sep boolean mGestureInProgress concode_elem_sep MotionEvent mPrevEvent concode_elem_sep Context mContext concode_elem_sep long mTimeDelta concode_field_sep void updateStateByEvent concode_elem_sep void handleStartProgressEvent concode_elem_sep boolean onTouchEvent concode_elem_sep void resetState concode_elem_sep void handleInProgressEvent concode_elem_sep boolean isInProgress concode_elem_sep long getEventTime