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AppState

AppState tells if the app is in the foreground or background, and notifies you when the state changes.

EventschangememoryWarningfocus Androidblur Android MethodsaddEventListener()removeEventListener()PropertiescurrentState

RESETRUNFULL
import React, { useRef, useState, useEffect } from "react";import { AppState, StyleSheet, Text, View } from "react-native";const AppStateExample = () => {
  const appState = useRef(AppState.currentState);
  const [appStateVisible, setAppStateVisible] = useState(appState.current);
  useEffect(() => {
    const subscription=AppState.addEventListener("change",
       nextAppState=>{
          if (appState.current.match(/inactive|background/) &&
          nextAppState === "active"
          ) console.log("App has come to the foreground!");
          appState.current = nextAppState;
          setAppStateVisible(appState.current);
          console.log("AppState", appState.current);
        });
    return () => { subscription.remove(); };
  }, []);
  return (
    <View style={styles.container}>
      <Text>Current state is: {appStateVisible}</Text>
    </View>
  );};const styles = StyleSheet.create({
  container: { flex: 1, justifyContent: "center", alignItems: "center"},});export default AppStateExample;