yarn add @wdragon/react-native-voice

# or

npm i @wdragon/react-native-voice --save

Link the iOS package

npx pod-install

Table of contents

• Configuration in Expo
• Usage
  • Example
• API

After installing this npm package, add the config plugin to the plugins array of your app.json or app.config.js:

{
  "expo": {
    "plugins": ["@wdragon/react-native-voice"]
  }
}

Then, add permissions inside the app.json configuration:

"ios": {
      "supportsTablet": true,
      "bundleIdentifier": "com.anonymous.SpeectToTextApp",
 "infoPlist": {
        "NSSpeechRecognitionUsageDescription": "This app uses speech recognition to convert your speech to text.",
        "NSCameraUsageDescription": "This app uses the camera to let user put a photo in his profile page."
      }
    },
    "android": {
      "adaptiveIcon": {
        "foregroundImage": "./assets/adaptive-icon.png",
        "backgroundColor": "#FFFFFF"
      },
      "permissions": ["android.permission.RECORD_AUDIO"],
      "package": "com.anonymous.SpeectToTextApp"
    },

Example

import Voice from '@wdragon/react-native-voice';
import React, {Component} from 'react';

class VoiceTest extends Component {
  constructor(props) {
    Voice.onSpeechStart = this.onSpeechStartHandler.bind(this);
    Voice.onSpeechEnd = this.onSpeechEndHandler.bind(this);
    Voice.onSpeechResults = this.onSpeechResultsHandler.bind(this);
  }
  onStartButtonPress(e){
    Voice.start('en-US');
  }
  ...
}

All methods now return a new Promise for async/await compatibility.

| Method Name | Description | Platform | | ------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | | Voice.isAvailable() | Checks whether a speech recognition service is available on the system. | Android, iOS | | Voice.start(locale) | Starts listening for speech for a specific locale. Returns null if no error occurs. | Android, iOS | | Voice.stop() | Stops listening for speech. Returns null if no error occurs. | Android, iOS | | Voice.cancel() | Cancels the speech recognition. Returns null if no error occurs. | Android, iOS | | Voice.destroy() | Destroys the current SpeechRecognizer instance. Returns null if no error occurs. | Android, iOS | | Voice.removeAllListeners() | Cleans/nullifies overridden Voice static methods. | Android, iOS | | Voice.isRecognizing() | Return if the SpeechRecognizer is recognizing. | Android, iOS | | Voice.getSpeechRecognitionServices() | Returns a list of the speech recognition engines available on the device. (Example: ['com.google.android.googlequicksearchbox'] if Google is the only one available.) | Android |

| Event Name | Description | Event | Platform | | ----------------------------------- | ------------------------------------------------------ | ----------------------------------------------- | ------------ | | Voice.onSpeechStart(event) | Invoked when .start() is called without error. | { error: false } | Android, iOS | | Voice.onSpeechRecognized(event) | Invoked when speech is recognized. | { error: false } | Android, iOS | | Voice.onSpeechEnd(event) | Invoked when SpeechRecognizer stops recognition. | { error: false } | Android, iOS | | Voice.onSpeechError(event) | Invoked when an error occurs. | { error: Description of error as string } | Android, iOS | | Voice.onSpeechResults(event) | Invoked when SpeechRecognizer is finished recognizing. | { value: [..., 'Speech recognized'] } | Android, iOS | | Voice.onSpeechPartialResults(event) | Invoked when any results are computed. | { value: [..., 'Partial speech recognized'] } | Android, iOS | | Voice.onSpeechVolumeChanged(event) | Invoked when pitch that is recognized changed. | { value: pitch in dB } | Android |

Notes on Android

Even after all the permissions are correct in Android, there is one last thing to make sure this libray is working fine on Android. Please make sure the device has Google Speech Recognizing Engine such as com.google.android.googlequicksearchbox by calling Voice.getSpeechRecognitionServices(). Since Android phones can be configured with so many options, even if a device has googlequicksearchbox engine, it could be configured to use other services. You can check which serivce is used for Voice Assistive App in following steps for most Android phones:

Settings > App Management > Default App > Assistive App and Voice Input > Assistive App

Above flow can vary depending on the Android models and manufactures. For Huawei phones, there might be a chance that the device cannot install Google Services.

How can I get com.google.android.googlequicksearchbox in the device?

Please ask users to install Google Search App.

iOS

Need to include permissions for NSMicrophoneUsageDescription and NSSpeechRecognitionUsageDescription inside Info.plist for iOS. See the included VoiceTest for how to handle these cases.

<dict>
  ...
  <key>NSMicrophoneUsageDescription</key>
  <string>Description of why you require the use of the microphone</string>
  <key>NSSpeechRecognitionUsageDescription</key>
  <string>Description of why you require the use of the speech recognition</string>
  ...
</dict>