HarmonyOS AI基础技术赋能之语音播报
IT科技类资讯 2025-10-07 13:24:41
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引言
在实际应用开发中，时不时的语音会遇到AI领域相关的一些技术，本节主要详细讲述一下语音播报技术，播报语音播报可能涉及的础技领域，如：实时语音交互、术赋超长文本播报等。语音对于HarmonyOS开发者而言，播报也需要了解和掌握HarmonyOS AI领域相关技术能力。础技
功能介绍
语音播报主要是术赋基于华为智慧引擎(HUAWEI HiAI Engine)中的语音播报引擎，向开发者提供人工智能应用层API。语音该技术提供将文本转换为语音并进行播报的播报能力。源码下载
指南
1、础技创建与TTS服务的术赋连接。context为应用上下文信息，语音应为ohos.aafwk.ability.Ability或ohos.aafwk.ability.AbilitySlice的实例或子类实例。
private static final TtsListener ttsListener = new TtsListener() { @Override public void onEvent(int eventType, PacMap pacMap) { // Log.info("onEvent:" + eventType); if (eventType == TtsEvent.CREATE_TTS_CLIENT_SUCCESS) { // Log.info("TTS Client create success"); } } @Override public void onStart(String utteranceId) { // Log.info(utteranceId + " audio synthesis begins"); } @Override public void onProgress(String utteranceId, byte[] audioData, int progress) { // Log.info(utteranceId + " audio synthesis progress：" + progress); } @Override public void onFinish(String utteranceId) { // Log.info(utteranceId + " audio synthesis completed"); } @Override public void onSpeechStart(String utteranceId) { // Log.info(utteranceId + " begins to speech"); } @Override public void onSpeechProgressChanged(String utteranceId, int progress) { // Log.info(utteranceId + " speech progress：" + progress); } @Override public void onSpeechFinish(String utteranceId) { // Log.info(utteranceId + " speech completed"); } @Override public void onError(String utteranceId, String errorMessage) { // Log.info(utteranceId + " errorMessage: " + errorMessage); } }; TtsClient.getInstance().create(context, ttsListener);2、在TTS接口创建成功后初始化TTS引擎
TtsParams ttsParams = new TtsParams(); ttsParams.setDeviceId("deviceId"); boolean initResult = TtsClient.getInstance().init(ttsParams);3、初始化TTS引擎成功后调用音频转换并播放接口
if (initResult) { TtsClient.getInstance().speakText("欢迎使用语音播报！", null); }4、使用完成后销毁TTS客户端
TtsClient.getInstance().destroy();示例代码
1、xml布局
<?xml version="1.0" encoding="utf-8"?> <DirectionalLayout xmlns:ohos="http://schemas.huawei.com/res/ohos" ohos:height="match_parent" ohos:width="match_parent" ohos:orientation="vertical"> <Text ohos:height="match_content" ohos:width="match_content" ohos:margin="15vp" ohos:text="AI语音播报" ohos:text_size="23fp" ohos:top_margin="40vp"/> <TextField ohos:id="$+id:text" ohos:height="300vp" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:left_margin="20vp" ohos:multiple_lines="true" ohos:right_margin="20vp" ohos:text="某软件公司是中国领先的软件与信息技术服务商，企业数字转型可信赖合作伙伴。公司2001年成立于北京，立足中国，服务全球市场。网站模板经过18年发展，目前公司在全球43个城市设有90多个分支机构26个全球交付中心，员工总数近60000人。该软件公司拥有深厚的行业积累和领先的技术实力，可以为客户提供端到端的数字化产品和服务，包括数字化咨询与解决方案、云智能与基础设施、软件与技术服务和数字化运营等；在10余个重要行业服务超过1000家国内外客户，其中世界500强企业客户超过110家，为各领域客户创造价值。" ohos:text_size="50" ohos:top_margin="20vp" /> <DirectionalLayout xmlns:ohos="http://schemas.huawei.com/res/ohos" ohos:height="match_parent" ohos:width="match_parent" ohos:orientation="horizontal"> <Button ohos:id="$+id:read_btn" ohos:height="35vp" ohos:width="80vp" ohos:background_element="$graphic:background_button" ohos:margin="15vp" ohos:text="语音播报" ohos:text_size="16fp"/> <Text ohos:id="$+id:time" ohos:height="35vp" ohos:width="150vp" ohos:margin="15vp" ohos:text="播报耗时：0 s" ohos:text_size="16fp"/> </DirectionalLayout> </DirectionalLayout>2、案例代码
package com.isoftstone.tts.slice; import com.isoftstone.tts.ResourceTable; import ohos.aafwk.ability.AbilitySlice; import ohos.aafwk.content.Intent; import ohos.agp.components.Button; import ohos.agp.components.Component; import ohos.agp.components.Text; import ohos.agp.components.TextField; import ohos.ai.tts.TtsClient; import ohos.ai.tts.TtsListener; import ohos.ai.tts.TtsParams; import ohos.ai.tts.constants.TtsEvent; import ohos.eventhandler.EventHandler; import ohos.eventhandler.EventRunner; import ohos.eventhandler.InnerEvent; import ohos.hiviewdfx.HiLog; import ohos.hiviewdfx.HiLogLabel; import ohos.utils.PacMap; import java.util.Timer; import java.util.TimerTask; import java.util.UUID; public class MainAbilitySlice extends AbilitySlice { private static final HiLogLabel LABEL_LOG = new HiLogLabel(3, 0xD001100, "MainAbilitySlice"); private TextField infoText; private Text timeText; private boolean initItsResult; private static final int EVENT_MSG_TIME_COUNT = 0x1000002; private int time = 0; private Timer timer = null; private TimerTask timerTask = null; private EventHandler handler = new EventHandler(EventRunner.current()) { @Override protected void processEvent(InnerEvent event) { switch (event.eventId) { case EVENT_MSG_TIME_COUNT: getUITaskDispatcher().delayDispatch(() -> { time = time + 1; HiLog.info(LABEL_LOG, "播报耗时：" + time + " s"); timeText.setText("播报耗时：" + time + " s"); }, 0); break; default: break; } } }; @Override public void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_ability_main); initView(); initTtsEngine(); } private void initView() { infoText = (TextField) findComponentById(ResourceTable.Id_text); Button readBtn = (Button) findComponentById(ResourceTable.Id_read_btn); timeText = (Text) findComponentById(ResourceTable.Id_time); readBtn.setClickedListener(this::readText); } private void initTtsEngine() { TtsClient.getInstance().create(this, ttsListener); } private void readText(Component component) { if (initItsResult) { TtsParams ttsParams = new TtsParams(); ttsParams.setSpeed(0);//语速0~15越大越快 TtsClient.getInstance().setParams(ttsParams); HiLog.info(LABEL_LOG, "initItsResult is true, speakText"); TtsClient.getInstance().speakText(infoText.getText(), null); } else { HiLog.error(LABEL_LOG, "initItsResult is false"); } } private TtsListener ttsListener = new TtsListener() { @Override public void onEvent(int eventType, PacMap pacMap) { HiLog.info(LABEL_LOG, "onEvent..."); // 定义TTS客户端创建成功的回调函数 if (eventType == TtsEvent.CREATE_TTS_CLIENT_SUCCESS) { TtsParams ttsParams = new TtsParams(); ttsParams.setDeviceId(UUID.randomUUID().toString()); initItsResult = TtsClient.getInstance().init(ttsParams); } } @Override public void onStart(String utteranceId) { HiLog.info(LABEL_LOG, "onStart..."); } @Override public void onProgress(String utteranceId, byte[] audioData, int progress) { } @Override public void onFinish(String utteranceId) { HiLog.info(LABEL_LOG, "onFinish..."); } @Override public void onError(String s, String s1) { HiLog.info(LABEL_LOG, "onError..."); } @Override public void onSpeechStart(String utteranceId) { // 开始计时 HiLog.info(LABEL_LOG, "onSpeechStart..."); if (timer == null && timerTask == null) { timer = new Timer(); timerTask = new TimerTask() { public void run() { handler.sendEvent(EVENT_MSG_TIME_COUNT); } }; timer.schedule(timerTask, 0, 1000); } } @Override public void onSpeechProgressChanged(String utteranceId, int progress) { } @Override public void onSpeechFinish(String utteranceId) { // 结束计时 HiLog.info(LABEL_LOG, "onSpeechFinish..."); timer.cancel(); time = 0; timer = null; timerTask = null; } }; }实现效果：
想了解更多内容，请访问：
和华为官方合作共建的鸿蒙技术社区
https://harmonyos.51cto.com
