Capacitor Speech Recognition Plugin

Capacitor community plugin for speech recognition.

Maintainers

| Maintainer | GitHub | Social | | --------------- | ------------------------------------------- | ------------------------------------------------ | | Priyank Patel | priyankpat | @priyankpat_ | | Matteo Padovano | mrbatista | @mrba7ista |

Maintenance Status: Actively Maintained

Installation

To use npm

npm install @capacitor-community/speech-recognition

To use yarn

yarn add @capacitor-community/speech-recognition

Sync native files

npx cap sync

iOS

iOS requires the following usage descriptions be added and filled out for your app in Info.plist:

• NSSpeechRecognitionUsageDescription (Privacy - Speech Recognition Usage Description)
• NSMicrophoneUsageDescription (Privacy - Microphone Usage Description)

Android

No further action required.

Supported methods

• available()
• start(...)
• stop()
• getSupportedLanguages()
• isListening()
• checkPermissions()
• requestPermissions()
• addListener('partialResults', ...)
• addListener('listeningState', ...)
• removeAllListeners()
• Interfaces
• Type Aliases

Example

import { SpeechRecognition } from "@capacitor-community/speech-recognition";

SpeechRecognition.available();

SpeechRecognition.start({
  language: "en-US",
  maxResults: 2,
  prompt: "Say something",
  partialResults: true,
  popup: true,
});
// listen to partial results
SpeechRecognition.addListener("partialResults", (data: any) => {
  console.log("partialResults was fired", data.matches);
});

// stop listening partial results
SpeechRecognition.removeAllListeners();

SpeechRecognition.stop();

SpeechRecognition.getSupportedLanguages();

SpeechRecognition.checkPermissions();

SpeechRecognition.requestPermissions();

SpeechRecognition.hasPermission();

SpeechRecognition.requestPermission();

available()

available() => Promise<{ available: boolean; }>

This method will check if speech recognition feature is available on the device.

Returns: Promise<{ available: boolean; }>

start(...)

start(options?: UtteranceOptions | undefined) => Promise<{ matches?: string[]; }>

This method will start to listen for utterance.

if partialResults is true, the function respond directly without result and event partialResults will be emit for each partial result, until stopped.

| Param | Type | | ------------- | ------------------------------------------------------------- | | options | UtteranceOptions |

Returns: Promise<{ matches?: string[]; }>

stop()

stop() => Promise<void>

This method will stop listening for utterance

getSupportedLanguages()

getSupportedLanguages() => Promise<{ languages: any[]; }>

This method will return list of languages supported by the speech recognizer.

It's not available on Android 13 and newer.

Returns: Promise<{ languages: any[]; }>

isListening()

isListening() => Promise<{ listening: boolean; }>

This method will check if speech recognition is listening.

Returns: Promise<{ listening: boolean; }>

Since: 5.1.0

checkPermissions()

checkPermissions() => Promise<PermissionStatus>

Check the speech recognition permission.

Returns: Promise<PermissionStatus>

Since: 5.0.0

requestPermissions()

requestPermissions() => Promise<PermissionStatus>

Request the speech recognition permission.

Returns: Promise<PermissionStatus>

Since: 5.0.0

addListener('partialResults', ...)

addListener(eventName: 'partialResults', listenerFunc: (data: { matches: string[]; }) => void) => Promise<PluginListenerHandle>

Called when partialResults set to true and result received.

On Android it doesn't work if popup is true.

Provides partial result.

| Param | Type | | ------------------ | ------------------------------------------------------ | | eventName | 'partialResults' | | listenerFunc | (data: { matches: string[]; }) => void |

Returns: Promise<PluginListenerHandle>

Since: 2.0.2

addListener('listeningState', ...)

addListener(eventName: 'listeningState', listenerFunc: (data: { status: 'started' | 'stopped'; }) => void) => Promise<PluginListenerHandle>

Called when listening state changed.

| Param | Type | | ------------------ | ------------------------------------------------------------------- | | eventName | 'listeningState' | | listenerFunc | (data: { status: 'started' | 'stopped'; }) => void |

Returns: Promise<PluginListenerHandle>

Since: 5.1.0

removeAllListeners()

removeAllListeners() => Promise<void>

Remove all the listeners that are attached to this plugin.

Since: 4.0.0

Interfaces

UtteranceOptions

| Prop | Type | Description | | -------------------- | -------------------- | ---------------------------------------------------------------- | | language | string | key returned from getSupportedLanguages() | | maxResults | number | maximum number of results to return (5 is max) | | prompt | string | prompt message to display on popup (Android only) | | popup | boolean | display popup window when listening for utterance (Android only) | | partialResults | boolean | return partial results if found |

PermissionStatus

| Prop | Type | Description | Since | | ----------------------- | ----------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----- | | speechRecognition | PermissionState | Permission state for speechRecognition alias. On Android it requests/checks RECORD_AUDIO permission On iOS it requests/checks the speech recognition and microphone permissions. | 5.0.0 |

PluginListenerHandle

| Prop | Type | | ------------ | ----------------------------------------- | | remove | () => Promise<void> |

Type Aliases

PermissionState

'prompt' | 'prompt-with-rationale' | 'granted' | 'denied'