如何在 React 本机类 React 导航 5 中实现暗模式？答案

【问题标题】：How to Implement dark mode in React native Classes React navigation 5?如何在 React 本机类 React 导航 5 中实现暗模式？
【发布时间】：2023-04-09 08:36:02
【问题描述】：

我正在尝试为我的应用实现暗模式。如何在 React 导航 V5 的类中做到这一点

【问题讨论】：

标签： react-native react-navigation-v5 darkmode

【解决方案1】：

https://stackoverflow.com/a/68005237/11711280 为 reactjs 回答这个问题

  constructor(props) {
    super(props);//seems to be the same here for reactjs as react-native
    this.darkModeQuery = window.matchMedia(`(prefers-color-scheme: dark)`);
    this.lightModeQuery = window.matchMedia(`(prefers-color-scheme: light)`);
  }
  componentDidMount() {
    this.darkModeListener = navigation.addListener(this.darkModeQuery, this.setDark);
    this.lightModeListener = navigation.addListener(this.lightModeQuery, this.setLight);
  }
  setDark = (darkModeQuery) =>
    this.setState({
      darkMode: darkModeQuery.length !== 0,
      darkModeListener: darkModeQuery
    });
  setLight = (lightModeQuery) =>
    this.setState({
      lightMode: lightModeQuery.length !== 0,
      lightModeListener: lightModeQuery
    });
  componentWillUnmount() {
    const { lightModeListener, darkModeListener } = this.state;
    if (lightModeListener)
      this.lightModeListener.remove();
    if (darkModeListener)
      this.darkModeListener.remove();
  }

https://stackoverflow.com/a/55590338/11711280我发现问如何将window.addEventListener(this.mediaQuery,this.myFunc)翻译成this.darkModeListener = navigator.addEventListener(this.mediaQuery,this.myFunc)

【讨论】：