Android 轻松实现语音识别的完整代码.doc

代码Android 轻松实现语音识别的完整代码view sourceprint?001* Copyright (C)2008The Android Open Source Project002*003* Licensed under the Apache License, Version2.0(theLicense);004* you may not usethisfile except in compliance with the License.005* You may obtain a copy of the License at006*007* /licenses/LICENSE-2.0008*009* Unless required by applicable law or agreed to in writing, software010* distributed under the License is distributed on anAS ISBASIS,011* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.012* See the Licenseforthe specific language governing permissions and013* limitations under the License.014*/015016packagecom.example.android.apis.app;017018importcom.example.android.apis.R;019020importandroid.app.Activity;021importandroid.content.Intent;022importandroid.content.pm.PackageManager;023importandroid.content.pm.ResolveInfo;024importandroid.os.Bundle;025importandroid.speech.RecognizerIntent;026importandroid.view.View;027importandroid.view.View.OnClickListener;028importandroid.widget.ArrayAdapter;029importandroid.widget.Button;030importandroid.widget.ListView;031032importjava.util.ArrayList;033importjava.util.List;034035/*036* Sample code that invokes the speech recognition intent API.037*/038publicclassVoiceRecognitionextendsActivityimplementsOnClickListener 039040privatestaticfinalintVOICE_RECOGNITION_REQUEST_CODE =1234;041042privateListView mList;043044/*045* Called with the activity is first created.046*/047Override048publicvoidonCreate(Bundle savedInstanceState) 049super.onCreate(savedInstanceState);050051/ Inflate our UI from its XML layout description.052setContentView(R.layout.voice_recognition);053054/ Get display items for later interaction055Button speakButton = (Button) findViewById(R.id.btn_speak);056057mList = (ListView) findViewById(R.id.list);058059/ Check to see if a recognition activity is present060PackageManager pm = getPackageManager();061List activities = pm.queryIntentActivities(062newIntent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH),0);063if(activities.size() !=0) 064speakButton.setOnClickListener(this);065else066speakButton.setEnabled(false);067speakButton.setText(Recognizer not present);068069070071/*072* Handle the click on the start recognition button.073*/074publicvoidonClick(View v) 075if(v.getId() = R.id.btn_speak) 076startVoiceRecognitionActivity();077078079080/*081* Fire an intent to start the speech recognition activity.082*/083privatevoidstartVoiceRecognitionActivity() 084Intent intent =newIntent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);085intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,086RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);087intent.putExtra(RecognizerIntent.EXTRA_PROMPT,Speech recognition demo);088startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);089090091/*092* Handle the results from the recognition activity.093*/094Override095protectedvoidonActivityResult(intrequestCode,intresultCode, Intent data) 096if(requestCode = VOICE_RECOGNITION_REQUEST_CODE & resultCode = RESULT_OK) 097/ Fill the list view with the strings the recognizer thought it could have heard098ArrayList matches = data.getStringArrayListExtra(099RecognizerIntent.EXTRA_