Text To Speech

pub package

A flutter text to speech plugin (Swift,Java)

Features

  • x Android, iOS, Web, & macOS
    • x speak
    • x stop
    • x get languages
    • x set language
    • x set speech rate
    • x set speech volume
    • x set speech pitch
    • x is language available
  • x Android, iOS
    • x get voices
    • x set voice
    • x speech marks (requires iOS 7+ and Android 26+)
    • x synthesize to file (requires iOS 13+)
  • x iOS, Web
    • x pause
  • x Android
    • x set Silence
  • x iOS
    • x set shared instance
    • x set audio session category

Usage

macOS

OSX version: 10.15

Example App from the macOS_app branch

Web

Website from the example directory.

Android

Change the minimum Android sdk version to 21 (or higher) in your android/app/build.gradle file.

minSdkVersion 21

iOS

There's a known issue with integrating plugins that use Swift into a Flutter project created with the Objective-C template. Flutter#16049

Example

To use this plugin :

  dependencies:
    flutter:
      sdk: flutter
    flutter_tts:
  • instantiate FlutterTts
FlutterTts flutterTts = FlutterTts();

To set shared audio instance (iOS only):

await flutterTts.setSharedInstance(true);

To set audio category and options (iOS only):

await flutterTts
        .setIosAudioCategory(IosTextToSpeechAudioCategory.playAndRecord, [
      IosTextToSpeechAudioCategoryOptions.allowBluetooth,
      IosTextToSpeechAudioCategoryOptions.allowBluetoothA2DP,
      IosTextToSpeechAudioCategoryOptions.mixWithOthers
    ]);

speak, stop, getLanguages, setLanguage, setSpeechRate, setVolume, setPitch, isLanguageAvailable, setSharedInstance

Future _speak() async{
    var result = await flutterTts.speak("Hello World");
    if (result == 1) setState(() => ttsState = TtsState.playing);
}

Future _stop() async{
    var result = await flutterTts.stop();
    if (result == 1) setState(() => ttsState = TtsState.stopped);
}

List<dynamic> languages = await flutterTts.getLanguages;

await flutterTts.setLanguage("en-US");

await flutterTts.setSpeechRate(1.0);

await flutterTts.setVolume(1.0);

await flutterTts.setPitch(1.0);

await flutterTts.isLanguageAvailable("en-US");

// iOS and Web only
await flutterTts.pause();

// iOS and Android only
await flutterTts.synthesizeToFile("Hello World", Platform.isAndroid ? "tts.wav" : "tts.caf");

// iOS only
await flutterTts.setSharedInstance(true);

// Android only
await flutterTts.setSilence(2);

await flutterTts.getEngines();

Listening for platform calls

flutterTts.setStartHandler(() {
  setState(() {
    ttsState = TtsState.playing;
  });
});

flutterTts.setCompletionHandler(() {
  setState(() {
    ttsState = TtsState.stopped;
  });
});

flutterTts.setProgressHandler((String text, int startOffset, int endOffset, String word) {
  setState(() {
    _currentWord = word;
  });
});

flutterTts.setErrorHandler((msg) {
  setState(() {
    ttsState = TtsState.stopped;
  });
});

flutterTts.setCancelHandler((msg) {
  setState(() {
    ttsState = TtsState.stopped;
  });
});

// iOS and Web
flutterTts.setPauseHandler((msg) {
  setState(() {
    ttsState = TtsState.paused;
  });
});

flutterTts.setContinueHandler((msg) {
  setState(() {
    ttsState = TtsState.continued;
  });
});

Getting Started

For help getting started with Flutter, view our online documentation.

For help on editing plugin code, view the documentation.

Libraries

flutter_tts
flutter_tts_web