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Android 上的语音识别是怎么实现

发布时间:2025-05-15 23:52:11    发布人:远客网络

Android 上的语音识别是怎么实现

一、Android 上的语音识别是怎么实现

语音识别,借助于云端技术可以识别用户的语音输入,包括语音控制等技术,下面我们将利用Google提供的Api实现这一功能。

功能点为:通过用户语音将用户输入的语音识别出来,并打印在列表上。

用户通过点击speak按钮显示界面:

用户说完话后,将提交到云端搜索

在云端搜索完成后,返回打印数据:

* Copyright(C) 2008 The Android Open Source Project

* Licensed under the Apache License, Version 2.0(the"License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an"AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

package com.example.android.apis.app;

import com.example.android.apis.R;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.speech.RecognizerIntent;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.ListView;

* Sample code that invokes the speech recognition intent API.

public class VoiceRecognition extends Activity implements OnClickListener{

private static final int VOICE_RECOGNITION_REQUEST_CODE= 1234;

* Called with the activity is first created.

public void onCreate(Bundle savedInstanceState){

super.onCreate(savedInstanceState);

// Inflate our UI from its XML layout description.

setContentView(R.layout.voice_recognition);

// Get display items for later interaction

Button speakButton=(Button) findViewById(R.id.btn_speak);

mList=(ListView) findViewById(R.id.list);

// Check to see if a recognition activity is present

PackageManager pm= getPackageManager();

List activities= pm.queryIntentActivities(

new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);

speakButton.setOnClickListener(this);

speakButton.setEnabled(false);

speakButton.setText("Recognizer not present");

* Handle the click on the start recognition button.

if(v.getId()== R.id.btn_speak){

startVoiceRecognitionActivity();

* Fire an intent to start the speech recognition activity.

private void startVoiceRecognitionActivity(){

Intent intent= new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,

RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

intent.putExtra(RecognizerIntent.EXTRA_PROMPT,"Speech recognition demo");

startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);

* Handle the results from the recognition activity.

protected void onActivityResult(int requestCode, int resultCode, Intent data){

if(requestCode== VOICE_RECOGNITION_REQUEST_CODE&& resultCode== RESULT_OK){

// Fill the list view with the strings the recognizer thought it could have heard

ArrayList matches= data.getStringArrayListExtra(

RecognizerIntent.EXTRA_RESULTS);

mList.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1,

super.onActivityResult(requestCode, resultCode, data);

二、android 怎么实现语音聊天

可以用第三方即时通讯云服务商,也可以自己开发实现。看你公司的能力和需求。自己开发耗时耗人耗精力。用第三方,比如融云,这里就举个融云的例子吧。可以直接集成融云的sdk,然后直接实现你说的功能。优点是快速方便,服务稳定。缺点是:不是自己开发的,如果出现问题需要提工单解决。

三、简述Android语音播报TTS

1、在移动应用开发中,Android语音播报技术(TTS)扮演着至关重要的角色。Android平台自带的TTS API让文本转语音变得简单,适用于无障碍应用、语音助手和语音导航等领域。

2、Android TTS,即文本到语音,允许开发者通过编程手段将文本转化为自然流畅的语音。它提供了丰富的API,包括控制语言、调整语音参数等功能,开发者可以根据应用需求定制化合成效果。

3、在使用前,确保应用具备权限,比如在AndroidManifest.xml中添加相关权限。下面是一个基础示例,展示了如何在应用中运用TTS API:

4、利用封装好的工具类,开发者能更方便地集成和管理TTS功能。在设计语音交互应用时,遵循最佳实践,能提升用户体验。

5、随着技术的不断发展,Android TTS将在更多场景中发挥威力,为用户提供更智能的交互体验。无论处于哪个阶段,持续努力是成功的关键。保持积极态度,相信自己的能力,每一步都将带你更接近目标。让我们一起加油,迎接未来的挑战!