GT2/Ejectable/BGEO.js

84 lines
2.0 KiB
JavaScript

import React from 'react';
import { useState } from 'react';
import { StyleSheet } from 'react-native';
import { Alert, Pressable } from 'react-native';
import { Text, View } from './components/Themed.tsx';
import * as TaskManager from 'expo-task-manager';
import * as Location from 'expo-location';
import { bgOps, Trips, setBgOps } from './GT2';
const BACKGROUND_LOCATION_TRACKER = 'BACKGROUND_LOCATION_TRACKER'
const getUpdates = async () => {
await Location.startLocationUpdatesAsync(BACKGROUND_LOCATION_TRACKER , {
accuracy: Location.Accuracy.Highest
});
};
export default function PermissionsButton() {
const [fuBgOps, setfuBgOps] = useState(0);
const requestPermissions = async () => {
const { status } = await Location.requestBackgroundPermissionsAsync();
setBgOps((status === 'granted'));
setfuBgOps(fuBgOps => fuBgOps + 1);
};
if (!bgOps)
return(
<View style={styles.container} lightColor="lime" darkColor="forestgreen">
<Pressable style={styles.button}
onPressIn={requestPermissions }>
<Text style={styles.text}>{'Enable background operations'}</Text>
<Text style={styles.text2}>{' (Only used during a trip)'}</Text>
</Pressable>
</View>);
else
return(
<View style={styles.container} lightColor="lime" darkColor="forestgreen">
<Text style={styles.text}>{'Trips can run in background.'}</Text>
</View>);
}
TaskManager.defineTask(BACKGROUND_LOCATION_TRACKER , async ({ data, error }) => {
if (error) {
// Error occurred - check `error.message` for more details.
console.log(error.message);
return;
}
if (data) {
const { location } = data;
Trips.deltaLoc( location );
}
});
const styles = StyleSheet.create({
container: {
marginVertical: 2,
marginTop: -20,
marginBottom: 15,
alignItems: 'center',
},
button: {
fontSize: 10,
backgroundColor: 'lime',
},
text: {
fontSize: 14,
fontWeight: 'bold',
color: "blue",
},
text2: {
fontSize: 10,
color: "navy",
}
});