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notesnook/apps/mobile/app/hooks/use-app-state.ts
2023-01-16 13:48:28 +05:00

50 lines
1.5 KiB
TypeScript

/*
This file is part of the Notesnook project (https://notesnook.com/)
Copyright (C) 2023 Streetwriters (Private) Limited
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import { useEffect, useState } from "react";
import { AppState, AppStateStatus } from "react-native";
export function useAppState() {
const currentState = AppState.currentState;
const [appState, setAppState] = useState(currentState);
useEffect(() => {
function onChange(newState: AppStateStatus) {
setAppState(newState);
}
const subscription = AppState.addEventListener("change", onChange);
return () => {
// @ts-expect-error - React Native >= 0.65
if (typeof subscription?.remove === "function") {
// @ts-expect-error - need update @types/react-native@0.65.x
subscription.remove();
} else {
// React Native < 0.65
AppState.removeEventListener("change", onChange);
}
};
}, []);
return appState;
}
export { AppStateStatus };