APIDEMO 词语朗读--需要安装TTS扩展服务

/* * Copyright (C) 2009 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 * * http://www.apache.org/licenses/LICENSE-2.0 * * 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 android.app.Activity; import android.os.Bundle; import android.speech.tts.TextToSpeech; import android.util.Log; import android.view.View; import android.widget.Button; import com.example.android.apis.R; import java.util.Locale; import java.util.Random; /** * <p>Demonstrates text-to-speech (TTS). Please note the following steps:</p> * * <ol> * <li>Construct the TextToSpeech object.</li> * <li>Handle initialization callback in the onInit method. * The activity implements TextToSpeech.OnInitListener for this purpose.</li> * <li>Call TextToSpeech.speak to synthesize speech.</li> * <li>Shutdown TextToSpeech in onDestroy.</li> * </ol> * * <p>Documentation: * http://developer.android.com/reference/android/speech/tts/package-summary.html * </p> * <ul> */ public class TextToSpeechActivity extends Activity implements TextToSpeech.OnInitListener { private static final String TAG = "TextToSpeechDemo"; private TextToSpeech mTts; private Button mAgainButton; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.text_to_speech); // Initialize text-to-speech. This is an asynchronous operation. // The OnInitListener (second argument) is called after initialization completes. mTts = new TextToSpeech(this, this // TextToSpeech.OnInitListener ); // The button is disabled in the layout. // It will be enabled upon initialization of the TTS engine. mAgainButton = (Button) findViewById(R.id.again_button); mAgainButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { sayHello(); } }); } @Override public void onDestroy() { // Don't forget to shutdown! if (mTts != null) { mTts.stop(); mTts.shutdown(); } super.onDestroy(); } // Implements TextToSpeech.OnInitListener. public void onInit(int status) { // status can be either TextToSpeech.SUCCESS or TextToSpeech.ERROR. if (status == TextToSpeech.SUCCESS) { // Set preferred language to US english. // Note that a language may not be available, and the result will indicate this. int result = mTts.setLanguage(Locale.US); // Try this someday for some interesting results. // int result mTts.setLanguage(Locale.FRANCE); if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) { // Lanuage data is missing or the language is not supported. Log.e(TAG, "Language is not available."); } else { // Check the documentation for other possible result codes. // For example, the language may be available for the locale, // but not for the specified country and variant. // The TTS engine has been successfully initialized. // Allow the user to press the button for the app to speak again. mAgainButton.setEnabled(true); // Greet the user. sayHello(); } } else { // Initialization failed. Log.e(TAG, "Could not initialize TextToSpeech."); } } private static final Random RANDOM = new Random(); private static final String[] HELLOS = { "Hello", "Salutations", "Greetings", "Howdy", "What's crack-a-lackin?", "That explains the stench!" }; private void sayHello() { // Select a random hello. int helloLength = HELLOS.length; String hello = HELLOS[RANDOM.nextInt(helloLength)]; mTts.speak(hello, TextToSpeech.QUEUE_FLUSH, // Drop all pending entries in the playback queue. null); } }

<!-- Text-To-Speech Samples --> <activity android:name=".app.TextToSpeechActivity" android:label="@string/text_to_speech"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.SAMPLE_CODE" /> </intent-filter> </activity>