javascript - 警告 : isMounted(. ..) 在普通 Javascript 类中已被弃用

Question

我正在使用 react 导航实现 2 个屏幕。但我在导航到第二页时收到以下警告:

Warning: isMounted(...) is deprecated in plain Javascript Classes. Instead, make sure to clean up subscriptions and pending requests in componentWillUnmount to prevent memory leaks.

版本:

• react :16.3.1
• react 原生:0.55.2
• react 导航:1.5.11
• 实用程序:0.10.3

Login.js

import React, { Component } from 'react';
import { Text, View, Image, TextInput, TouchableOpacity } from 'react-native';
import styles from "./styles";

export default class Login extends Component {
    constructor(props) {
    super(props);
}

render() {
    const { navigate } = this.props.navigation;     
    return (
        <View style={styles.container}>         
            <View style={styles.formContainer}>                 
                <TouchableOpacity style={styles.button} onPress={()=> navigate('Home')} >
                    <Text style={styles.buttonText}>LOGIN</Text>
                </TouchableOpacity>
            </View>
        </View>
    )
}

Home.js

import React, { Component } from 'react';
import { Text, View } from 'react-native';
import styles from "./styles";

export default class Home extends Component {
    constructor(props) {
        super(props);
    }
    render() {
        const { navigate } = this.props.navigation;
        return(
            <View style={styles.container}>         
                <Text>Home Screen</Text>
            </View>
        )
    }
}

我在这里缺少什么？

Answer 1

这是最新的 React Navigation 和 React Native 的问题。要使其静音，请添加:

import { YellowBox } from 'react-native';
YellowBox.ignoreWarnings(['Warning: isMounted(...) is deprecated', 'Module RCTImageLoader']);

我预计它将在未来几周内在 React Navigation 中得到修复。