HarmonyOS NEXT 实战输入文字转化语音

import { textToSpeech } from '@kit.CoreSpeechKit';import { BusinessError } from '@kit.BasicServicesKit';let ttsEngine: textToSpeech.TextToSpeechEngine;
@Entry@Componentstruct Index05 {  @State isPlay: boolean = false //是否播放  @State voiceInfo: string = ""; //接收目前支持的语种音色等信息  @State inputValue: string = ""; //输入值  @State inputValueIdx: number = 0; //  aboutToAppear() {    this.createByCallback()  }
  aboutToDisappear(): void {    ttsEngine.shutdown()  }
  // 创建引擎，通过callback形式返回  // 当引擎不存在、引擎资源不存在、初始化超时，返回错误码1003400005，引擎创建失败  private createByCallback() {    // 设置创建引擎参数    let extraParam: Record<string, Object> = {"style": 'interaction-broadcast', "locate": 'CN', "name": 'EngineName'};    let initParamsInfo: textToSpeech.CreateEngineParams = {      language: 'zh-CN',      person: 0,      online: 1,      extraParams: extraParam    };
    // 调用createEngine方法    textToSpeech.createEngine(initParamsInfo, (err: BusinessError, textToSpeechEngine: textToSpeech.TextToSpeechEngine) => {      if (!err) {        console.info('Succeeded in creating engine.');        // 接收创建引擎的实例        ttsEngine = textToSpeechEngine;      } else {        // 创建引擎失败时返回错误码1003400005，可能原因：引擎不存在、资源不存在、创建引擎超时        console.error(`Failed to create engine. Code: ${err.code}, message: ${err.message}.`);      }    });
  };
  // 调用speak播报方法  // 未初始化引擎时调用speak方法，返回错误码1003400007，合成及播报失败  private speak(textValue:string,req_ID:string) {    let speakListener: textToSpeech.SpeakListener = {      // 开始播报回调      onStart(requestId: string, response: textToSpeech.StartResponse) {        console.info(`onStart, requestId: ${requestId} response: ${JSON.stringify(response)}`);      },      // 完成播报回调      onComplete(requestId: string, response: textToSpeech.CompleteResponse) {        console.info(`onComplete, requestId: ${requestId} response: ${JSON.stringify(response)}`);      },      // 停止播报完成回调，调用stop方法并完成时会触发此回调      onStop(requestId: string, response: textToSpeech.StopResponse) {        console.info(`onStop, requestId: ${requestId} response: ${JSON.stringify(response)}`);      },      // 返回音频流      onData(requestId: string, audio: ArrayBuffer, response: textToSpeech.SynthesisResponse) {        console.info(`onData, requestId: ${requestId} sequence: ${JSON.stringify(response)} audio: ${JSON.stringify(audio)}`);      },      // 错误回调，播报过程发生错误时触发此回调      onError(requestId: string, errorCode: number, errorMessage: string) {        console.error(`onError, requestId: ${requestId} errorCode: ${errorCode} errorMessage: ${errorMessage}`);      }    };    // 设置回调    ttsEngine.setListener(speakListener);    // 设置播报相关参数    let extraParam: Record<string, Object> = {"queueMode": 0, "speed": 1, "volume": 2, "pitch": 1, "languageContext": 'zh-CN', "audioType": "pcm", "soundChannel": 3, "playType":1}    let speakParams: textToSpeech.SpeakParams = {      requestId: req_ID, // requestId在同一实例内仅能用一次，请勿重复设置      extraParams: extraParam    };    // 调用speak播报方法    ttsEngine.speak(textValue, speakParams);  };
  // 查询语种音色信息，以callback形式返回  private listVoicesCallback(req_ID:string) {    // 设置查询相关参数    let voicesQuery: textToSpeech.VoiceQuery = {      requestId: req_ID, // requestId在同一实例内仅能用一次，请勿重复设置      online: 1    };
    // 调用listVoices方法，以callback返回语种音色查询结果    ttsEngine.listVoices(voicesQuery, (err: BusinessError, voiceInfo: textToSpeech.VoiceInfo[]) => {      if (!err) {        // 接收目前支持的语种音色等信息        this.voiceInfo = JSON.stringify(voiceInfo);        console.info(`Succeeded in listing voices, voiceInfo is ${voiceInfo}`);      } else {        console.error(`Failed to list voices. Code: ${err.code}, message: ${err.message}`);      }    });  };
  build() {    Column(){      TextArea({placeholder:'请输入...'})        .width('80%')        .onChange((value:string)=>{          this.inputValue = value        })        .margin({bottom:20})        .backgroundColor(0XFFFFFF)
      Column(){        Image($r('app.media.idiom_yuyin')).width(44).height(44)          .onClick(()=>{            this.isPlay = !this.isPlay            if (this.isPlay == true){              let val:string = this.inputValue              this.createByCallback()              this.listVoicesCallback(this.inputValueIdx.toString())              this.speak(val,this.inputValueIdx.toString())            }else {              ttsEngine.shutdown()            }          })      }.width(70)      .height(70)      .borderWidth(2)      .borderColor(0xFFFFFF)      .borderRadius(35)      .justifyContent(FlexAlign.Center)      .alignItems(HorizontalAlign.Center)      .stateStyles({        normal:{.backgroundColor(0xF9F3EF)},        pressed:{.backgroundColor(0xFFEFE5)}      })      .onClick(()=>{        this.inputValueIdx = this.inputValueIdx++        this.isPlay = !this.isPlay        if (this.isPlay == true){          let val:string = this.inputValue          this.createByCallback()
          this.listVoicesCallback(this.inputValueIdx.toString())          this.speak(val,this.inputValueIdx.toString())        }else {          ttsEngine.shutdown()        }      })    }.width("100%")    .height("100%")    .justifyContent(FlexAlign.Center)    .backgroundColor(0xfadf99)  }}