new NativeEventEmitter() was called with a non-null argument without the required addListener method. new NativeEventEmitter() was called with a non-null argument without the required removeListeners method.

[avanish2411]

import React, { useEffect, useRef, useState } from 'react';
import { View, Text, SafeAreaView, Image, ScrollView, TouchableOpacity, Alert, ActivityIndicator } from 'react-native';
import { widthPercentageToDP as wp, heightPercentageToDP as hp } from 'react-native-responsive-screen';
import Features from '../Components/Features';
import { PermissionsAndroid, Platform } from 'react-native';
import Voice from '@react-native-community/voice';
import { apiCall } from '../Api/openAI';
import { DummyMessage } from '../Constants/DummyMessages';

async function requestRecordAudioPermission() {
try {
if (Platform.OS === 'android') {
const granted = await PermissionsAndroid.request(
PermissionsAndroid.PERMISSIONS.RECORD_AUDIO,
{
title: 'Voice Permission',
message: 'App needs access to your microphone to record audio.',
buttonNeutral: 'Ask Me Later',
buttonNegative: 'Cancel',
buttonPositive: 'OK',
},
);
if (granted === PermissionsAndroid.RESULTS.GRANTED) {
console.log('Record audio permission granted');
} else {
console.log('Record audio permission denied');
}
}
} catch (err) {
console.warn(err);
}
}

export default function HomeScreen() {
const [messages, setMessages] = useState(DummyMessage)
const [recording, setRecording] = useState(false);
const [speaking, setSpeaking] = useState(false);
const [result, setResult] = useState('');
const ScrollViewRef = useRef();
const [loading, setLoading] = useState(false);

const speechStartHandler = () => {
    console.log("Speech start handler");
};

const speechEndHandler = () => {
    setRecording(false);
    console.log('Speech end Handler');
}

const speechResultHandler = (e) => {
    console.log('voice event', e);
    const text = e.value[0]
    setResult(text);
}

const speechErrorHandler = (e) => {
    console.log('speech error', e);
}

const startRecording = async () => {
    setRecording(true);
    try {
        await Voice.start('en-US');
    } catch (error) {
        console.log(error);
    }
}
// console.log(result);
const stopRecording = async () => {
    try {
        await Voice.stop();
        setRecording(false);
        // Fetch result
        fetchResponse();
    } catch (error) {
        console.log(error);
    }
}

console.log(result);

const fetchResponse = (result) => {
    if (result.trim().length > 0) {
        //add usermessages
        let newMessages = [...messages];
        newMessages.push({ role: 'user', content: result.trim()});
        setMessages([...newMessages]);

        updateScrollView();
        
        setLoading(true);
        apiCall(result.trim(), newMessages).then(res => {
            setLoading(false);
            if (res.success) {
                setMessages([...res.data]);
                updateScrollView();
                setResult('');
            } else {
                Alert.alert("Error", res.msg);
            }
        });
    }
}

const updateScrollView = () => {
    setTimeout(() => {
        ScrollViewRef?.current?.scrollToEnd({ animated: true });
    })
}

const clear = () => {
    setMessages([]);
}

const stopSpeaking = () => {
    setSpeaking(false)
}

useEffect(() => {
    Voice.onSpeechStart = speechStartHandler;
    Voice.onSpeechEnd = speechEndHandler;
    Voice.onSpeechResults = speechResultHandler;
    Voice.onSpeechError = speechErrorHandler;
    return () => {
        // Destroy the voice instance
        Voice.destroy().then(Voice.removeAllListeners);
    }
    requestRecordAudioPermission();
}, []);

return (
    <View className='flex-1 bg-white'>
        <SafeAreaView className='flex-1 flex mx-5'>
            {/* Bot icon */}
            <View className='flex-row justify-center'>
                <Image source={require('../assets/images/bot.jpg')} style={{ height: hp(25), width: wp(55) }} />
            </View>

            {/* Features or messages */}
            {
                messages.length > 0 ?
                    <View className='space-y-2 flex-1'>
                        <Text style={{ fontSize: wp(5) }} className='text-gray-700 font-semibold ml-1'>Assistant</Text>
                        <View style={{ height: hp(58) }} className='bg-neutral-200 rounded-3xl p-4'>
                            <ScrollView ref={ScrollViewRef} bounces={false} showsVerticalScrollIndicator={false} className='space-y-2'>
                                {
                                    messages.map((message, index) => {
                                        if (message.role == 'assistant') {
                                            if (message.content.includes('https')) {
                                                return (
                                                    <View key={index} className='flex-row justify-start'>
                                                        <View className='p-2 rounded-2xl bg-emerald-100 rounded-tl-none'>
                                                            <Image
                                                                source={{ uri: message.content }}
                                                                style={{ height: wp(60), width: wp(60) }}
                                                                className='rounded-2xl'
                                                                resizeMode='contain'
                                                            />
                                                        </View>
                                                    </View>
                                                )
                                            } else {
                                                return (
                                                    <View key={index} className='flex-row justify-start'>
                                                        <View style={{ fontSize: wp(70) }} className='bg-emerald-100 rounded-xl p-2 rounded-tl-none'>
                                                            <Text className='text-black'>{message.content}</Text>
                                                        </View>
                                                    </View>
                                                )
                                            }
                                        } else {
                                            return (
                                                <View key={index} className='flex-row justify-end'>
                                                    <View style={{ fontSize: wp(70) }} className='bg-white rounded-xl p-2 rounded-tr-none'>
                                                        <Text className='text-black'>{message.content}</Text>
                                                    </View>
                                                </View>
                                            )
                                        }
                                    })
                                }
                            </ScrollView>
                        </View>
                    </View> :
                    <View style={{ marginBottom: 17 }}>
                        <Features />
                    </View>
            }

            {/* Recording and clear */}
            <View style={{ flexDirection: 'row', justifyContent: 'center', alignItems: 'center' }}>
                {loading ? (
                    <ActivityIndicator size="small" color="#000" style={{ marginRight: 10 }} />
                ) : recording ? (
                    <TouchableOpacity onPress={stopRecording} style={{ padding: 10 }}>
                        <Image source={require('../assets/images/voice.png')} style={{ width: hp(8), height: hp(8) }} className='rounded-full' />
                    </TouchableOpacity>
                ) : (
                    <TouchableOpacity onPress={startRecording} style={{ padding: 10 }}>
                        <Image source={require('../assets/images/mic.png')} style={{ width: hp(8), height: hp(8) }} className='rounded-full' />
                    </TouchableOpacity>
                )}

                {messages.length > 0 && (
                    <TouchableOpacity onPress={clear} className='bg-neutral-400 rounded-3xl p-2 absolute right-10'>
                        <Text style={{ color: 'white', fontWeight: 'bold' }}>Clear</Text>
                    </TouchableOpacity>
                )}
                {speaking && (
                    <TouchableOpacity onPress={stopSpeaking} className='bg-red-400 rounded-3xl p-2 absolute left-10'>
                        <Text style={{ color: 'white', fontWeight: 'bold' }}>Stop</Text>
                    </TouchableOpacity>
                )}
            </View>
        </SafeAreaView>
    </View>
)

}

[avanish2411]

is there anything needed in linking process after running "npm i @react-native-community/voice" in terminal in android ....if yes then please provide code with proper location i'm unable to understand from documentation

[Kaue-Romero]

It is already fixed by this pull request: #460
Just not pushed yet