当应用程序“说”回来：文本转语音插件

tns plugin add nativescript-texttospeech

...
//import the plugin
import { TNSTextToSpeech, SpeakOptions } from 'nativescript-texttospeech';
...
@Component({
    ...
})
export class RecipeDetailComponent implements OnInit {
    ...
    //set a default boolean for a button to animate when the tts plugin 'speaks'
    isSpeaking: boolean = false;
    ...
    private TTS: TNSTextToSpeech;
    constructor(
        ...
    ) {
        ...
        this.TTS = new TNSTextToSpeech();
    }
    ...
    //on button press, the text visible on the screen is spoken aloud
    speak(text: string){
        this.isSpeaking = true;
        let speakOptions: SpeakOptions = {
            text: text,
            speakRate: 0.5,
            //language: "fr",
            finishedCallback: (() => {
                this.isSpeaking = false;
            })  
        }
        this.TTS.speak(speakOptions);
    }
}