事件分发

分发触发事件

float  lastActionDownX;

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        switch (ev.getAction()){
            case MotionEvent.ACTION_DOWN:
                lastActionDownX = ev.getX();
                break;
            case MotionEvent.ACTION_MOVE:
                int xOffset = (int) (ev.getX() - lastActionDownX);
                if ( xOffset > 60 && getSlidingMenu().isMenuShowing()) {

                    getSlidingMenu().toggle();
                    return false;
                }
                break;
        }
        return super.dispatchTouchEvent(ev);

    }