通过别名导航:

var result = await Get.toNamed(Routes.WEB_VIEW, arguments: {
          "url": item?.link ?? "",
          "index": index,
          "collect": item?.collect ?? false,
        });

返回值:

Get.back(result: {"collect": collect.value});

完整代码:

() async {
        /// 导航到新的界面
        var result = await Get.toNamed(Routes.WEB_VIEW, arguments: {
          "url": item?.link ?? "",
          "index": index,
          "collect": item?.collect ?? false,
        });
        /// 接收返回值
        bool collect = result["collect"];
      }