Question

说我有两条路由 / firstRoute 和 / secondRoute ，分别用于小部件 FirstRoute 和 SecondRoute 。我正在将带有某些参数的命名路由推入堆栈，就像这样……

Navigator.pushNamed(
    context,
    "/secondRoute",
    arguments: <String, String>{"key" : "value"},
)

现在如何在 SecondRoute 中使用此值？看了看文档，但没有提及。

Answer 1

为参数创建类：

class ScreenArguments {
  final String title;
  final String message;

  ScreenArguments(this.title, this.message);
}

并在小部件中提取它们：

class ExtractArgumentsScreen extends StatelessWidget {
  static const routeName = '/extractArguments';

  @override
  Widget build(BuildContext context) {
    // Extract the arguments from the current ModalRoute settings and cast
    // them as ScreenArguments.
    final ScreenArguments args = ModalRoute.of(context).settings.arguments;

    return Scaffold(
      appBar: AppBar(
        title: Text(args.title),
      ),
      body: Center(
        child: Text(args.message),
      ),
    );
  }
}

用于发送参数：

Navigator.pushNamed(
  context,
  ExtractArgumentsScreen.routeName,
  arguments: ScreenArguments(
    'Extract Arguments Screen',
    'This message is extracted in the build method.',
  ),
);

Answer 2

使用Row

在{overflowX: "auto"}的构建方法中：

from bs4 import BeautifulSoup
from selenium import webdriver
from selenium.webdriver import ActionChains

#Incognito Mode
option=webdriver.ChromeOptions()
option.add_argument("--incognito")

#Open Chrome
driver=webdriver.Chrome(executable_path="C:/Users/chromedriver.exe",chrome_options=option)

#url I want to visit.
lists=['https://www.tripadvisor.com/VacationRentalReview-g30196-d6386734-Hot_51st_St_Walk_to_Mueller_2BDR_Modern_sleeps_7-Austin_Texas.html']

for k in lists:

    driver.get(k)
    html =driver.page_source
    soup=BeautifulSoup(html,"html.parser")
    time.sleep(3)
    listing=soup.find_all("div", class_="review-container")

    for i in range(len(listing)):

        try:
            #First, I tried this but didn't work.
            #link = driver.find_element_by_link_text('More')
            #driver.execute_script("arguments[0].click();", link)

            #Second, I tried ActionaChains but didn't work.
            ActionChains(driver).move_to_element(i).click().perform()
        except:
            pass

        text_review=soup.find_all("div", class_="prw_rup prw_reviews_text_summary_hsx")
        text_review_inside=text_review[i].find("p", class_="partial_entry")
        review_text=text_review_inside.text

        print (review_text)

如何使用随pushNamed传递的参数？

2 个答案: