react-native-hooks/back-handler

import React from "react";
import { StyleSheet, Text, View } from "react-native";
import useBackHandler from "@rnhooks/back-handler";

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: "center",
    alignItems: "center",
    backgroundColor: "#F5FCFF"
  },
  type: {
    margin: 20,
    fontSize: 20
  }
});

function App() {
  const count = useBackHandler("exit");

  return (
    <View style={styles.container}>
      <Text style={styles.type}>{`Count: ${count}`}</Text>
    </View>
  );
}

export default App;