Geolocation
getCurrentPosition, watchPosition, clearWatch — 用完务必 clearWatch。
- Methods: getCurrentPosition(), watchPosition(cb), clearWatch(id)
- Always clearWatch when the watcher is no longer needed
TSXGeolocation — one-shot
1import { Geolocation, toast } from "@quan-erp/shared-frontend-core";
2
3export async function readCurrentPosition() {
4 try {
5 const pos = await Geolocation.instance.getCurrentPosition();
6 return {
7 lat: pos.coords.latitude,
8 lng: pos.coords.longitude,
9 accuracy: pos.coords.accuracy,
10 };
11 } catch (e) {
12 toast.error((e as Error).message ?? "Location failed");
13 return null;
14 }
15}TSXGeolocation — watch (React)
1import { useEffect, useState } from "react";
2import { Geolocation } from "@quan-erp/shared-frontend-core";
3
4export function LiveLocation() {
5 const [coords, setCoords] = useState<{ lat: number; lng: number } | null>(
6 null,
7 );
8
9 useEffect(() => {
10 const geo = Geolocation.instance;
11 let watchId: string | number | undefined;
12
13 void (async () => {
14 watchId = await geo.watchPosition((p) => {
15 setCoords({
16 lat: p.coords.latitude,
17 lng: p.coords.longitude,
18 });
19 });
20 })();
21
22 return () => {
23 if (watchId != null) geo.clearWatch(watchId);
24 };
25 }, []);
26
27 if (!coords) return <span>Locating…</span>;
28 return (
29 <span>
30 {coords.lat.toFixed(5)}, {coords.lng.toFixed(5)}
31 </span>
32 );
33}