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chore: headless js + example updates
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| /** | ||
| * Copyright (c) React Native Community | ||
| * | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| * | ||
| * @format | ||
| */ | ||
|
|
||
| 'use strict'; | ||
|
|
||
| import React, { useEffect, useRef, useState } from 'react'; | ||
| import { View, Button, AppState } from 'react-native'; | ||
| import BackgroundTimer from 'react-native-background-timer'; | ||
| import Geolocation from '@react-native-community/geolocation'; | ||
|
|
||
| export default function BackgroundLocationUpdates() { | ||
| const appState = useRef(AppState.currentState); | ||
| const [backgroundListener, setBackgroundListener] = useState(false); | ||
|
|
||
| useEffect(() => { | ||
| if (!backgroundListener) { | ||
| return; | ||
| } | ||
|
|
||
| const subscription = AppState.addEventListener('change', (nextAppState) => { | ||
| if (nextAppState.match(/inactive|background/)) { | ||
| BackgroundTimer.runBackgroundTimer(() => { | ||
| Geolocation.getCurrentPosition( | ||
| (position) => { | ||
| console.log( | ||
| 'getCurrentPosition background', | ||
| JSON.stringify(position) | ||
| ); | ||
| }, | ||
| (error) => | ||
| console.log( | ||
| 'getCurrentPosition background error', | ||
| JSON.stringify(error) | ||
| ), | ||
| { enableHighAccuracy: true } | ||
| ); | ||
| }, 1000); | ||
|
|
||
| console.log('App has come to the foreground!'); | ||
| } else { | ||
| BackgroundTimer.stopBackgroundTimer(); | ||
| } | ||
|
|
||
| appState.current = nextAppState; | ||
| }); | ||
|
|
||
| return () => { | ||
| subscription.remove(); | ||
| }; | ||
| }, [backgroundListener]); | ||
|
|
||
| return ( | ||
| <View> | ||
| <Button | ||
| title={`${ | ||
| backgroundListener ? 'Disable' : 'Enable' | ||
| } background location updates`} | ||
| onPress={() => setBackgroundListener(!backgroundListener)} | ||
| /> | ||
| </View> | ||
| ); | ||
| } |
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