Android语音识别技术详解及实例代码

    
public class RecognizerIntentActivity extends Activity { 
 
  private Button btnReconizer; 
  private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234; 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.reconizer); 
     
    btnReconizer=(Button) this.findViewById(R.id.btnRecognizer); 
    btnReconizer.setOnClickListener(new OnClickListener() { 
       
      @Override 
      public void onClick(View v) { 
        // TODO Auto-generated method stub 
        try{ 
        //通过Intent传递语音识别的模式，开启语音 
        Intent intent=new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); 
        //语言模式和自由模式的语音识别 
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); 
        //提示语音开始 
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "开始语音"); 
        //开始语音识别 
        startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE); 
        }catch (Exception e) { 
          // TODO: handle exception 
          e.printStackTrace(); 
          Toast.makeText(getApplicationContext(), "找不到语音设备", 1).show(); 
        } 
      } 
    }); 
     
  } 
   
  @Override 
  protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    // TODO Auto-generated method stub 
    //回调获取从谷歌得到的数据  
    if(requestCode==VOICE_RECOGNITION_REQUEST_CODE && resultCode==RESULT_OK){ 
      //取得语音的字符 
      ArrayList<String> results=data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS); 
       
      String resultString=""; 
      for(int i=0;i<results.size();i++){ 
        resultString+=results.get(i); 
      } 
      Toast.makeText(this, resultString, 1).show(); 
    } 
    super.onActivityResult(requestCode, resultCode, data); 
  } 
}