Android中如何添加语音识别功能?详细步骤和代码?

android.speech.RecognizerIntent这个包里。前提是你的手袜山机支持此告历中功能。

开启 *** 作:

Intent

intent

=

newIntent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)//开启语音识别功能。

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,

RecognizerIntent.LANGUAGE_MODEL_FREE_FORM)

//设置烂塌语言类型。

intent.putExtra(RecognizerIntent.EXTRA_PROMPT,

"请说话，我识别")

startActivityForResult(intent,REQUEST_CODE)

在onActivityResult()里用:

data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)取得google云端反馈的数据即可。

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

功能点为：通过用唯升户语音将用户输入的语音识别出来，并打印在列表上。

功能界面如下：

步骤阅读

2

用户通过点击speak按钮显示界面：

步骤阅读

3

用户说完话后，将提交到云端搜索

步骤阅读

4

在云端搜索完成后，返回打印数据：

步骤阅读

5

* 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.app.Activity

import android.content.Intent

import android.content.pm.PackageManager

import android.content.pm.ResolveInfo

import android.os.Bundle

import android.speech.RecognizerIntent

import android.view.View

import android.view.View.OnClickListener

import android.widget.ArrayAdapter

import android.widget.Button

import android.widget.ListView

import java.util.ArrayList

import java.util.List

/**

* 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

private ListView mList

/**

* Called with the activity is first created.

*/

@Override

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)

if (activities.size() != 0) {

speakButton.setOnClickListener(this)

} else {

speakButton.setEnabled(false)

speakButton.setText("Recognizer not present")

}

}

/**

* Handle the click on the start recognition button.

*/

public void onClick(View v) {

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.

*/

@Override

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,

matches))

}

super.onActivityResult(requestCode, resultCode, data)

}

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