IOS 自动化没有找到滚动到元素可见，自己写一个记一下

    def Element_Scroll_To_Visibility(self, locator, fromX, fromY, toX, toY,
                                     by=MobileBy.IOS_PREDICATE, model=None):  # 将元素滚动到可见区域
        """
        将不可见元素滚动到可见区域
        :param locator: 元素表达式
        :param fromX: 起始位置X坐标倍数
        :param fromY: 起始位置Y坐标倍数
        :param toX: 终点位置X坐标的倍数
        :param toY: 终点位置Y坐标的倍数
        :param by: 元素定位方式
        :param model: 截图命名默认为None
        :return:
        """
        try:
            logging.info('开始滚动操作，一直到元素可见')
            while True:
                try:
                    WebDriverWait(self.driver, 1).until(EC.
                        visibility_of_element_located(
                        (by, locator)))
                    break
                except:
                    pass
                size = self.driver.get_window_size()
                self.driver.execute_script("mobile:dragFromToForDuration",
                                           {"duration": 0.5, "element": None, "fromX": size['width'] * fromX,
                                            "fromY": size['height'] * fromY, "toX": size['width'] * toX,
                                            "toY": size['height'] * toY})
        except:
            self._save_screenShot(model)
            logging.error('获取文本内容失败')
            raise