Acce.js

import React, { useState, useEffect } from 'react';
import { StyleSheet, Text, TouchableOpacity, View } from 'react-native';
import { Accelerometer } from 'expo-sensors';
import { Audio } from 'expo-av';

export default function Acce() {
  const [data, setData] = useState({
    x: 0,
    y: 0,
    z: 0,
  });
  const [subscription, setSubscription] = useState(null);

  const _slow = () => {
    Accelerometer.setUpdateInterval(1000);
  };

  const _fast = () => {
    Accelerometer.setUpdateInterval(16);
  };

  const _subscribe = () => {
    setSubscription(
      Accelerometer.addListener(async(accelerometerData) => {
        setData(accelerometerData);
        console.log("Zoom zoom: ", accelerometerData)
        if (accelerometerData.y <= -1.6) {
          try {
            const { sound } = await Audio.Sound.createAsync(
              require('./assets/Sounds/swiftly.mp3')
            );
            await sound.playAsync();
          } catch {
            console.log("Error playing sound!")
          }
          setShowMessage(true)
        } else {
          setShowMessage(false)
        }
      })
    );
  };

  const _unsubscribe = () => {
    subscription && subscription.remove();
    setSubscription(null);
  };

  const [showMessage, setShowMessage] = useState(false)

  useEffect(() => {
    _subscribe();
    return () => _unsubscribe();
  }, [showMessage]);

  const { x, y, z } = data;
  return (
    <View style={styles.container}>
      {
        showMessage ?
          <Text style={styles.text}>Pothole detected!</Text> : null
      }
      <Text style={styles.text}>Accelerometer: (in Gs where 1 G = 9.81 m s^-2)</Text>
      <Text style={styles.text}>
        x: {round(x)} y: {round(y)} z: {round(z)}
      </Text>
      <View style={styles.buttonContainer}>
        <TouchableOpacity onPress={subscription ? _unsubscribe : _subscribe} style={styles.button}>
          <Text>{subscription ? 'On' : 'Off'}</Text>
        </TouchableOpacity>
        <TouchableOpacity onPress={_slow} style={[styles.button, styles.middleButton]}>
          <Text>Slow</Text>
        </TouchableOpacity>
        <TouchableOpacity onPress={_fast} style={styles.button}>
          <Text>Fast</Text>
        </TouchableOpacity>
      </View>
    </View>
  );
}

function round(n) {
  if (!n) {
    return 0;
  }
  return Math.floor(n * 100) / 100;
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    paddingHorizontal: 10,
    backgroundColor: 'white'
  },
  text: {
    textAlign: 'center',
  },
  buttonContainer: {
    flexDirection: 'row',
    alignItems: 'stretch',
    marginTop: 15,
  },
  button: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#eee',
    padding: 10,
  },
  middleButton: {
    borderLeftWidth: 1,
    borderRightWidth: 1,
    borderColor: '#ccc',
  },
});