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android 语音识别 android开发教程
来源:互联网   发布日期:2015-09-29 10:00:10   浏览:1485次  

导读:首先可以用以下代码测试你的机器是不是有语音识别功能:[java]倀愀挀欀愀最攀Manager pm = getPackageManager();List<ResolveInfo> a...

首先可以用以下代码测试你的机器是不是有语音识别功能:

[java]

PackageManager pm = getPackageManager();

List<ResolveInfo> activities = pm.queryIntentActivities(

new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);

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

/*Activity存在*/

Toast.makeText(AndroidVoiceActivity.this, "Activity存在", Toast.LENGTH_LONG).show();

} else {

/*ActivityNotFound未判断会抛出ActivityNotFoundException*/

Toast.makeText(AndroidVoiceActivity.this, "Activity不存在", Toast.LENGTH_LONG).show();

}

简单的Activity:

[java]

package com.relin.voice;

import java.util.ArrayList;

import java.util.List;

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.Button;

import android.widget.Toast;

public class AndroidVoiceActivity extends Activity {

/** Called when the activity is first created. */

private static final int VOICE_RECOGNITION_REQUEST_CODE = 1;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Button button = (Button)findViewById(R.id.button1);

button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

try{

Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "开始语音");

startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);

}catch (Exception e) {

// TODO: handle exception

Toast.makeText(AndroidVoiceActivity.this, "ActivityNotFoundException", Toast.LENGTH_LONG).show();

}

}

});

}

@Override

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

// TODO Auto-generated method stub

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

ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

String resultString = "";

for (int i = 0; i < result.size(); i++) {

resultString += result.get(i);

}

Toast.makeText(this, resultString, Toast.LENGTH_LONG).show();

}

super.onActivityResult(requestCode, resultCode, data);

}

}

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