我正在用你们的 firebase 开发一个应用程序。 我正在尝试保存并引用来自 cloud firestore 的一些数据。 我发现以下错误。 [FirebaseError：由于客户端离线而无法获取文档。] 我确认过了 1.网络环境 2.安全规则 3.防火墙 等等 你能帮我解决一下吗
import { initializeApp } from 'firebase/app';
// Optionally import the services that you want to use
import { getAuth } from "firebase/auth"
import { getDatabase }from "firebase/database";
import { getFirestore } from "firebase/firestore";
// import database from '@react-native-firebase/database';
// import {...} from "firebase/firestore";
// import {...} from "firebase/functions";
// import {...} from "firebase/storage";
// Initialize Firebase(there is no data due to private information)
const firebaseConfig = {
apiKey:
authDomain:
databaseURL:
projectId:
storageBucket: ,
messagingSenderId: ,
appId: ,
measurementId:
};
const app = initializeApp(firebaseConfig);
export const auth = getAuth(app);
// Initialize Realtime Database and get a reference to the service
export const database = getDatabase(app);
// For more information on how to access Firebase in your project,
// see the Firebase documentation: https://firebase.google.com/docs/web/setup#access-firebase
export const firestore = getFirestore(app);
// https://firebase.google.com/docs/firestore/manage-data/add-data?hl=ja
import React, { useState, useEffect } from "react";
import { View,ActivityIndicator, Text, ScrollView, StyleSheet, TextInput, Button ,Switch,Dimensions,Image,Alert} from "react-native";
import { useNavigation } from '@react-navigation/native'; // useNavigationを追加
import MapView, { Marker ,Polyline} from 'react-native-maps';
import {requestLocationPermission,getCurrentLocation,writeMyLocationData} from '../../sockets/googlemap'
import {findPlace,fetchRoute} from '../../sockets/googleroute'
import { ref,onChildAdded} from "firebase/database";
import { database,firestore } from '../../firebaseConfig'; // Firebaseのデータベースを正しくインポートする必要があります
import { Input} from 'react-native-elements'; // React Native Elementsからボタンをインポート
import { doc, setDoc , collection, addDoc ,getDocs,getDoc} from "firebase/firestore";
const Main = () => {
const [otherRiders, setOtherRiders] = useState([]);
const dbref = ref(database); //取得したいデータのパスを指定
console.log("kakunin",otherRiders)
const [routeInfo, setRouteInfo] = useState({ origin: "", destination: "" });
const navigation = useNavigation(); // useNavigationフックを使用してnavigationオブジェクトを取得
const [myCurrentLocation,setMyCurrentLocation] = useState({
latitude: 0,
longitude: 0,
})
const [myDestination,setMyDestination] = useState({
latitude: 0,
longitude: 0,
})
const [myOrigin,setMyOrigin] = useState({
latitude: 0,
longitude: 0,
})
// DB を取得している
const [isMapReady, setIsMapReady] = useState(false);
const [isEnabled, setIsEnabled] = useState(false);
const toggleSwitch = () => setIsEnabled(previousState => !previousState);
const iconImage = require('../../assets/kurumi.jpg');
const myDestinationIcon = require('../../assets/flag.png');
const myOriginIcon = require('../../assets/start.png');
// requestLocationPermission();
useEffect(() => {
requestLocationPermission(setMyCurrentLocation,myCurrentLocation,setIsMapReady);
const childAddedListener = onChildAdded(dbref, function (snapshot) {
let data = snapshot.val();
setOtherRiders(data);
});
const saveUserData = async () => {
try {
const docRef = await addDoc(collection(firestore, "users"), {
name: "Tokyo",
});
console.log("Document written with ID: ", docRef.id);
} catch (e) {
console.error("エラーが発生しました：", e);
} finally {
console.log("保存が完了しました！");
}
};
const fetchUserData = async () => {
try {
// Query a reference to a subcollection
const docRef = doc(firestore, "users", "FHNX6msuu6rOLjRGlalw");
const docSnap = await getDoc(docRef);
console.log("docSnap",docSnap)
} catch (e) {
console.error("エラーが発生しました：", e);
} finally {
console.log("しゅとく");
}
};
saveUserData()
fetchUserData(); // 非同期関数を呼び出す
// const testt = async ()=>{
// // Add a new document with a generated id.
// console.log("ssssssssss")
// const docRef = await addDoc(collection(firestore, "users"), {
// name: "Tokyo",
// });
// console.log("Document written with ID: ", docRef.id);
// }
// test()
// testt()
return () => {
// コンポーネントがアンマウントされたときにイベントリスナーを解除する
childAddedListener();
};
},[]);
return (
isMapReady ? ( // マップが準備完了したら表示
<ScrollView style={styles.Wrapper}>
<View style={styles.mapContainer}>
<MapView style={styles.map}
initialRegion={{
latitude: myCurrentLocation.latitude,
longitude: myCurrentLocation.longitude,
latitudeDelta: 0.0922,
longitudeDelta: 0.0421,
}}
>
{/* <Marker
coordinate={{
latitude: myCurrentLocation.latitude,
longitude: myCurrentLocation.longitude,
}}
>
<Image style={styles.icon} source={iconImage} />
</Marker> */}
<Marker
coordinate={{
latitude: myOrigin.latitude,
longitude: myOrigin.longitude,
}}
>
<Image style={styles.icon} source={myOriginIcon} />
</Marker>
<Marker
coordinate={{
latitude: myDestination.latitude,
longitude: myDestination.longitude,
}}
>
<Image style={styles.icon} source={myDestinationIcon} />
</Marker>
<Polyline
coordinates={[
{ latitude: myOrigin.latitude, longitude: myOrigin.longitude },
{ latitude: myDestination.latitude, longitude: myDestination.longitude },
]}
strokeColor="#FF0000" // 線の色
strokeWidth={2} // 線の太さ
/>
{
otherRiders.map((rider,index)=>{
console.log("rider",rider)
let diferLat = Math.abs(myCurrentLocation.latitude - rider.latitude) < 1 ? true:false;
let diferLot = Math.abs(myCurrentLocation.longitude - rider.longitude) < 1 ? true:false;
// if(diferLat && diferLot){
// Alert.alert("手を振りましょう")
// }
return(
<Marker
key={index} // ここで一意のキーを提供する
coordinate={{
latitude: rider.latitude,
longitude: rider.longitude,
}}
>
<Image style={styles.icon} source={iconImage} />
</Marker>
)
})
}
</MapView>
</View>
<Text style={styles.direction}>出発地</Text>
<Input
placeholder={'出発地を入力してください'}
value={routeInfo.origin}
onChangeText={text => setRouteInfo({ ...routeInfo, origin: text })}
/>
<Text style={styles.direction}>目的地</Text>
<Input
placeholder={'到着地を入力してください'}
value={routeInfo.destination}
onChangeText={text => setRouteInfo({ ...routeInfo, destination: text })}
/>
<View>
<Button
title="ルートを検索する"
onPress={() => fetchRoute(setMyOrigin,setMyDestination,routeInfo)}
/>
</View>
<View>
<Button
title="戻る"
onPress={() => navigation.navigate('Top')}
/>
</View>
</ScrollView>
): <View style={styles.waitContainer}><ActivityIndicator size="large" color="#0000ff" /><Text style={styles.waitText}>少々お待ちください...</Text></View>
)
}
export default Main;
const { height } = Dimensions.get("window");
const mapHeight = height * 0.5; // 画面の半分の高さ
const styles = StyleSheet.create({
Wrapper:{
flex: 1, // 画面の半分のサイズに設定
},
direction: {
fontSize: 12,
padding:10
},
infomation: {
fontSize: 12,
padding:10
},
subTitle: {
fontSize: 14,
textAlign: "center",
padding:5
},
mapContainer: {
height: mapHeight,
justifyContent: 'center',
alignItems: 'center',
},
map: {
...StyleSheet.absoluteFillObject,
},
markerContainer: {
backgroundColor: 'blue',
padding: 5,
borderRadius: 5,
},
markerText: {
color: 'white',
fontWeight: 'bold',
},
imputWrapper: {
alignItems: "center", // 横方向に中央揃え
padding: 20
},
imputContainer:{
width:'100%',
marginBottom:10
},
imputBox: {
height: 40,
borderWidth: 1,
},
icon: {
width: 28,
height: 28,
},
waitScrollViewContent: {
flex: 1,
width:'100%',
},
center: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
},
waitContainer: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
},
waitText: {
marginTop: 10,
fontSize: 16,
},
});
1.网络环境 2.安全规则 3.防火墙
我将关闭这个问题。谢谢大家