啟動 Android 的語音識別(Speech Recognition)功能

應用軟件可以通過 RecognizerIntent, 啟動 Android 的語音識別(Speech Recognition)功能.




例子:

package com.AndroidSpeechRecognition;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class AndroidSpeechRecognition extends Activity {
 
 private static final int RQS_VOICE_RECOGNITION = 1;
 TextView textResult;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button buttonSpeech = (Button)findViewById(R.id.Speech);
        textResult = (TextView)findViewById(R.id.Result);
        
        buttonSpeech.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
       intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
           RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
       intent.putExtra(RecognizerIntent.EXTRA_PROMPT,
           "Start Speech");
       startActivityForResult(intent, RQS_VOICE_RECOGNITION);
   }});
    }

 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  // TODO Auto-generated method stub
  if(requestCode == RQS_VOICE_RECOGNITION){
   if(resultCode == RESULT_OK){

    ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
    String firstMatch = (String)result.get(0);
    textResult.setText(firstMatch);
   }
  }
  

 }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<Button
    android:id="@+id/Speech"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Speech"
    />
<TextView
    android:id="@+id/Result"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    />
</LinearLayout>

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