Question

问题：

我正在创建具有Firebase集成的EXPO应用程序。在其中，我创建了一个配置文件以与数据库连接。这就是它的样子。

import Firebase from 'firebase';
 let config = {
    apiKey: "mykey",
    authDomain: "mytrain-5beba.firebaseapp.com",
    databaseURL: "https://mytain-5beba.firebaseio.com",
    projectId: "mytain-5beba",
    storageBucket: "mytain-5beba.appspot.com",
    messagingSenderId: "myid"
  };
let app = Firebase.initializeApp(config);
export const db = app.database();

在服务文件夹中，我已经创建了一个服务文件来处理诸如此类的操作。这样看起来。

import { db } from '../config/db';

export const addItem =  (item) => {
    db.ref('/tains').push({
        name: item
    });
}

在我的组件中，在componentDidMount方法中，我已经做了类似的事情来测试天气数据库连接是否正常工作。

import React, { Component } from "react";
import {
  StyleSheet,
  Text,
  TextInput,
  View,
  TouchableOpacity,
  Dimensions,
  Picker,
  ListView
} from "react-native";

import {
  Ionicons,
  Foundation,
  Entypo,
  MaterialCommunityIcons,
  FontAwesome,
  MaterialIcons
} from "@expo/vector-icons";

import { Autocomplete } from "react-native-autocomplete-input";

import { addItem } from '../../services/stationService';

const { height, width } = Dimensions.get("window");
const box_width = width / 2 + 40;

export default class TicketForm extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      name: ""
    };
  }

  static navigationOptions = {
    title: "",
    headerStyle: {
      backgroundColor: "#2b78fe"
    },
    headerTintColor: "#fff",
    headerTitleStyle: {
      color: "#ffff"
    }
  };

  componentDidMount() {
    const name = "Tharindu";
    addItem(name);
  }




  render() {
    return (
      <View>
        <Text>Haiii</Text>
      </View>
    );
  }
}


});

当我运行expo时，请启动--android。它向我显示了一些这样的警告。

[15:59:03] Setting a timer for a long period of time, i.e. multiple minutes, is a performance and correctness issue on Android as it keeps the timer module awake, and timers can only be called when the app is in the foreground. See https://github.com/facebook/react-native/issues/12981 for more info.
(Saw setTimeout with duration 92226ms)
- node_modules\react-native\Libraries\ReactNative\YellowBox.js:80:15 in warn
- node_modules\expo\src\Expo.js:26:41 in warn
- ... 11 more stack frames from framework internals

我对这些本机反应非常陌生。有人可以帮我解决这个问题吗？谢谢！

Answer 1

存在一个firebase计时器问题，现在暂时忽略它。还没有解决办法

constructor() { super(); console.ignoredYellowBox = [ 'Setting a timer' ]; }

反应本地应用程序显示错误为超时错误？

1 个答案: