CODEWITHSUNDEEP
androidreact-nativeaudio-recordingandroid-audiorecord
Hao.Le
Hao.Le

Reputation: 198

Can not record during calls

I'm using React Native to implement an Android app that helps us record outgoing calls. After the user types a phone number and clicks call, I start Recorder and then navigate the user to the phone screen to make a call.

The issue is that I only record voice before and after the user dials. nothing during the call.

I tested on a Nokia C31 (android 12)

here is my code.

import AudioRecorderPlayer, {
  AudioEncoderAndroidType,
  AudioSet,
  AudioSourceAndroidType,
} from 'react-native-audio-recorder-player';
import dayjs from 'dayjs';
import RNFetchBlob from 'rn-fetch-blob';
const dirs = RNFetchBlob.fs.dirs;

const audioSet: AudioSet = {
  AudioEncoderAndroid: AudioEncoderAndroidType.DEFAULT,
  AudioSourceAndroid: AudioSourceAndroidType.VOICE_COMMUNICATION,
};

export default function Dialer() {
  // other states...
  const audioRecorderPlayer = useRef(new AudioRecorderPlayer());

  const startRecording = async () => {
    const formattedDate = dayjs().format('DD-MMM-YYYY_hh-mm-ss-A');
    const fileName = `${dirs.CacheDir}/call-record_${formattedDate}.mp3`;
    console.log(fileName);
    setAudioPath(fileName);
    try {
      setIsRecording(true);
      const result = await audioRecorderPlayer.current.startRecorder(
        fileName,
        audioSet,
        true,
      );
      console.log('start recording', result);
    } catch (error) {
      console.error('Error starting recording:', error);
    }
  };

  const handleCall = () => {
    if (!isRecording) {
      startRecording();
      console.log('called');
      Linking.openURL(`tel:${number}`);
    }
  };
//...
}

permissions requested

const permissions = [
  PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE,
  PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE,
  PermissionsAndroid.PERMISSIONS.RECORD_AUDIO,
  PermissionsAndroid.PERMISSIONS.CALL_PHONE,
];

here is my manifest

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.DOWNLOAD_WITHOUT_NOTIFICATION" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />

I think I need to use the VOICE_CALL instead of VOICE_COMMUNICATION.

but VOICE_CALL needs android.permission.CAPTURE_AUDIO_OUTPUT.

according to the documentation: This permission is reserved for use by system components and is not available to third-party applications.

when I use VOICE_CALL, I can not start the Recorder (get error)

Upvotes: 0

Views: 656

Answers (1)

Gabe Sechan
Gabe Sechan

Reputation: 93559

Only system apps can use VOICE_CALL. This is for security reasons. Android does not allow any app to get the audio of a call, except for preinstalled apps from the OEM. The only way you can record a call as an app on Android is to use the normal microphone and hope the volume of the call is loud enough that it gets picked up.

Upvotes: 1

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