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am d2962a33: TextToSpeech API demo.

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Merge commit 'd2962a33216ce40a526c80fc8865cf9bd04936f4' into eclair-mr2

* commit 'd2962a33216ce40a526c80fc8865cf9bd04936f4':
  TextToSpeech API demo.
This commit is contained in:
James Yum
2009-12-08 16:13:06 -08:00
committed by Android Git Automerger
parent 863270d143 d2962a3321
commit 1b5a89a204
4 changed files with 174 additions and 0 deletions
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9
samples/ApiDemos/AndroidManifest.xml
View File

@@ -553,6 +553,15 @@
</intent-filter>
</activity>
<!-- 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>
<!-- ************************************* -->
<!-- CONTENT PACKAGE SAMPLES -->
<!-- ************************************* -->

26
samples/ApiDemos/res/layout/text_to_speech.xml Normal file
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@@ -0,0 +1,26 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- 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.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/again_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:enabled="false"
android:text="@string/again" />
</LinearLayout>

3
samples/ApiDemos/res/values/strings.xml
View File

@@ -221,6 +221,9 @@
<string name="voice_recognition">App/Voice Recognition</string>
<string name="text_to_speech">App/Text-To-Speech</string>
<string name="again">Again</string>
<!-- ============================== -->
<!-- app/content examples strings -->
<!-- ============================== -->

136
samples/ApiDemos/src/com/example/android/apis/app/TextToSpeechActivity.java Normal file
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@@ -0,0 +1,136 @@
/*
* 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);
}
}