/*
* Copyright (C) 2011 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.android.settings.tts;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.ContentResolver;
import android.content.Intent;
import android.os.Bundle;
import android.provider.Settings.SettingNotFoundException;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.EngineInfo;
import android.speech.tts.TtsEngines;
import android.speech.tts.UtteranceProgressListener;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceCategory;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Checkable;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.R;
import com.android.settings.SeekBarPreference;
import com.android.settings.SettingsActivity;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.tts.TtsEnginePreference.RadioButtonGroupState;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.Objects;
import java.util.Set;
import static android.provider.Settings.Secure.TTS_DEFAULT_PITCH;
import static android.provider.Settings.Secure.TTS_DEFAULT_RATE;
import static android.provider.Settings.Secure.TTS_DEFAULT_SYNTH;
public class TextToSpeechSettings extends SettingsPreferenceFragment implements
Preference.OnPreferenceChangeListener, Preference.OnPreferenceClickListener,
RadioButtonGroupState {
private static final String TAG = "TextToSpeechSettings";
private static final boolean DBG = false;
/** Preference key for the "play TTS example" preference. */
private static final String KEY_PLAY_EXAMPLE = "tts_play_example";;
/** Preference key for the TTS pitch selection slider. */
private static final String KEY_DEFAULT_PITCH = "tts_default_pitch";
/** Preference key for the TTS rate selection slider. */
private static final String KEY_DEFAULT_RATE = "tts_default_rate";
/** Preference key for the TTS reset speech rate preference. */
private static final String KEY_RESET_SPEECH_RATE = "reset_speech_rate";
/** Preference key for the TTS reset speech pitch preference. */
private static final String KEY_RESET_SPEECH_PITCH = "reset_speech_pitch";
/** Preference key for the TTS status field. */
private static final String KEY_STATUS = "tts_status";
/**
* Preference key for the engine selection preference.
*/
private static final String KEY_ENGINE_PREFERENCE_SECTION =
"tts_engine_preference_section";
/**
* These look like birth years, but they aren't mine. I'm much younger than this.
*/
private static final int GET_SAMPLE_TEXT = 1983;
private static final int VOICE_DATA_INTEGRITY_CHECK = 1977;
/**
* Speech rate value.
* This value should be kept in sync with the max value set in tts_settings xml.
*/
private static final int MAX_SPEECH_RATE = 600;
private static final int MIN_SPEECH_RATE = 10;
/**
* Speech pitch value.
* TTS pitch value varies from 25 to 400, where 100 is the value
* for normal pitch. The max pitch value is set to 400, based on feedback from users
* and the GoogleTTS pitch variation range. The range for pitch is not set in stone
* and should be readjusted based on user need.
* This value should be kept in sync with the max value set in tts_settings xml.
*/
private static final int MAX_SPEECH_PITCH = 400;
private static final int MIN_SPEECH_PITCH = 25;
private PreferenceCategory mEnginePreferenceCategory;
private SeekBarPreference mDefaultPitchPref;
private SeekBarPreference mDefaultRatePref;
private Preference mResetSpeechRate;
private Preference mResetSpeechPitch;
private Preference mPlayExample;
private Preference mEngineStatus;
private int mDefaultPitch = TextToSpeech.Engine.DEFAULT_PITCH;
private int mDefaultRate = TextToSpeech.Engine.DEFAULT_RATE;
/**
* The currently selected engine.
*/
private String mCurrentEngine;
/**
* The engine checkbox that is currently checked. Saves us a bit of effort
* in deducing the right one from the currently selected engine.
*/
private Checkable mCurrentChecked;
/**
* The previously selected TTS engine. Useful for rollbacks if the users
* choice is not loaded or fails a voice integrity check.
*/
private String mPreviousEngine;
private TextToSpeech mTts = null;
private TtsEngines mEnginesHelper = null;
private String mSampleText = null;
/**
* Default locale used by selected TTS engine, null if not connected to any engine.
*/
private Locale mCurrentDefaultLocale;
/**
* List of available locals of selected TTS engine, as returned by
* {@link TextToSpeech.Engine#ACTION_CHECK_TTS_DATA} activity. If empty, then activity
* was not yet called.
*/
private List<String> mAvailableStrLocals;
/**
* The initialization listener used when we are initalizing the settings
* screen for the first time (as opposed to when a user changes his choice
* of engine).
*/
private final TextToSpeech.OnInitListener mInitListener = new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
onInitEngine(status);
}
};
/**
* The initialization listener used when the user changes his choice of
* engine (as opposed to when then screen is being initialized for the first
* time).
*/
private final TextToSpeech.OnInitListener mUpdateListener = new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
onUpdateEngine(status);
}
};
@Override
protected int getMetricsCategory() {
return MetricsEvent.TTS_TEXT_TO_SPEECH;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.tts_settings);
getActivity().setVolumeControlStream(TextToSpeech.Engine.DEFAULT_STREAM);
mPlayExample = findPreference(KEY_PLAY_EXAMPLE);
mPlayExample.setOnPreferenceClickListener(this);
mPlayExample.setEnabled(false);
mResetSpeechRate = findPreference(KEY_RESET_SPEECH_RATE);
mResetSpeechRate.setOnPreferenceClickListener(this);
mResetSpeechPitch = findPreference(KEY_RESET_SPEECH_PITCH);
mResetSpeechPitch.setOnPreferenceClickListener(this);
mEnginePreferenceCategory = (PreferenceCategory) findPreference(
KEY_ENGINE_PREFERENCE_SECTION);
mDefaultPitchPref = (SeekBarPreference) findPreference(KEY_DEFAULT_PITCH);
mDefaultRatePref = (SeekBarPreference) findPreference(KEY_DEFAULT_RATE);
mEngineStatus = findPreference(KEY_STATUS);
updateEngineStatus(R.string.tts_status_checking);
mTts = new TextToSpeech(getActivity().getApplicationContext(), mInitListener);
mEnginesHelper = new TtsEngines(getActivity().getApplicationContext());
setTtsUtteranceProgressListener();
initSettings();
// Prevent restarting the TTS connection on rotation
setRetainInstance(true);
}
@Override
public void onResume() {
super.onResume();
if (mTts == null || mCurrentDefaultLocale == null) {
return;
}
Locale ttsDefaultLocale = mTts.getDefaultLanguage();
if (mCurrentDefaultLocale != null && !mCurrentDefaultLocale.equals(ttsDefaultLocale)) {
updateWidgetState(false);
checkDefaultLocale();
}
}
private void setTtsUtteranceProgressListener() {
if (mTts == null) {
return;
}
mTts.setOnUtteranceProgressListener(new UtteranceProgressListener() {
@Override
public void onStart(String utteranceId) {}
@Override
public void onDone(String utteranceId) {}
@Override
public void onError(String utteranceId) {
Log.e(TAG, "Error while trying to synthesize sample text");
}
});
}
@Override
public void onDestroy() {
super.onDestroy();
if (mTts != null) {
mTts.shutdown();
mTts = null;
}
}
private void initSettings() {
final ContentResolver resolver = getContentResolver();
// Set up the default rate and pitch.
mDefaultRate = android.provider.Settings.Secure.getInt(
resolver, TTS_DEFAULT_RATE, TextToSpeech.Engine.DEFAULT_RATE);
mDefaultPitch = android.provider.Settings.Secure.getInt(
resolver, TTS_DEFAULT_PITCH, TextToSpeech.Engine.DEFAULT_PITCH);
mDefaultRatePref.setProgress(getSeekBarProgressFromValue(KEY_DEFAULT_RATE, mDefaultRate));
mDefaultRatePref.setOnPreferenceChangeListener(this);
mDefaultRatePref.setMax(getSeekBarProgressFromValue(KEY_DEFAULT_RATE, MAX_SPEECH_RATE));
mDefaultPitchPref.setProgress(getSeekBarProgressFromValue(KEY_DEFAULT_PITCH,
mDefaultPitch));
mDefaultPitchPref.setOnPreferenceChangeListener(this);
mDefaultPitchPref.setMax(getSeekBarProgressFromValue(KEY_DEFAULT_PITCH,
MAX_SPEECH_PITCH));
if (mTts != null) {
mCurrentEngine = mTts.getCurrentEngine();
mTts.setSpeechRate(mDefaultRate/100.0f);
mTts.setPitch(mDefaultPitch/100.0f);
}
SettingsActivity activity = null;
if (getActivity() instanceof SettingsActivity) {
activity = (SettingsActivity) getActivity();
} else {
throw new IllegalStateException("TextToSpeechSettings used outside a " +
"Settings");
}
mEnginePreferenceCategory.removeAll();
List<EngineInfo> engines = mEnginesHelper.getEngines();
for (EngineInfo engine : engines) {
TtsEnginePreference enginePref = new TtsEnginePreference(getPrefContext(), engine,
this, activity);
mEnginePreferenceCategory.addPreference(enginePref);
}
checkVoiceData(mCurrentEngine);
}
/**
* The minimum speech pitch/rate value should be > 0 but the minimum value of a seekbar in
* android is fixed at 0. Therefore, we increment the seekbar progress with MIN_SPEECH_VALUE
* so that the minimum seekbar progress value is MIN_SPEECH_PITCH/RATE.
* SPEECH_VALUE = MIN_SPEECH_VALUE + SEEKBAR_PROGRESS
*/
private int getValueFromSeekBarProgress(String preferenceKey, int progress) {
if (preferenceKey.equals(KEY_DEFAULT_RATE)) {
return MIN_SPEECH_RATE + progress;
} else if (preferenceKey.equals(KEY_DEFAULT_PITCH)) {
return MIN_SPEECH_PITCH + progress;
}
return progress;
}
/**
* Since we are appending the MIN_SPEECH value to the speech seekbar progress, the
* speech seekbar progress should be set to (speechValue - MIN_SPEECH value).
*/
private int getSeekBarProgressFromValue(String preferenceKey, int value) {
if (preferenceKey.equals(KEY_DEFAULT_RATE)) {
return value - MIN_SPEECH_RATE;
} else if (preferenceKey.equals(KEY_DEFAULT_PITCH)) {
return value - MIN_SPEECH_PITCH;
}
return value;
}
/**
* Called when the TTS engine is initialized.
*/
public void onInitEngine(int status) {
if (status == TextToSpeech.SUCCESS) {
if (DBG) Log.d(TAG, "TTS engine for settings screen initialized.");
checkDefaultLocale();
} else {
if (DBG) Log.d(TAG, "TTS engine for settings screen failed to initialize successfully.");
updateWidgetState(false);
}
}
private void checkDefaultLocale() {
Locale defaultLocale = mTts.getDefaultLanguage();
if (defaultLocale == null) {
Log.e(TAG, "Failed to get default language from engine " + mCurrentEngine);
updateWidgetState(false);
updateEngineStatus(R.string.tts_status_not_supported);
return;
}
// ISO-3166 alpha 3 country codes are out of spec. If we won't normalize,
// we may end up with English (USA)and German (DEU).
final Locale oldDefaultLocale = mCurrentDefaultLocale;
mCurrentDefaultLocale = mEnginesHelper.parseLocaleString(defaultLocale.toString());
if (!Objects.equals(oldDefaultLocale, mCurrentDefaultLocale)) {
mSampleText = null;
}
int defaultAvailable = mTts.setLanguage(defaultLocale);
if (evaluateDefaultLocale() && mSampleText == null) {
getSampleText();
}
}
private boolean evaluateDefaultLocale() {
// Check if we are connected to the engine, and CHECK_VOICE_DATA returned list
// of available languages.
if (mCurrentDefaultLocale == null || mAvailableStrLocals == null) {
return false;
}
boolean notInAvailableLangauges = true;
try {
// Check if language is listed in CheckVoices Action result as available voice.
String defaultLocaleStr = mCurrentDefaultLocale.getISO3Language();
if (!TextUtils.isEmpty(mCurrentDefaultLocale.getISO3Country())) {
defaultLocaleStr += "-" + mCurrentDefaultLocale.getISO3Country();
}
if (!TextUtils.isEmpty(mCurrentDefaultLocale.getVariant())) {
defaultLocaleStr += "-" + mCurrentDefaultLocale.getVariant();
}
for (String loc : mAvailableStrLocals) {
if (loc.equalsIgnoreCase(defaultLocaleStr)) {
notInAvailableLangauges = false;
break;
}
}
} catch (MissingResourceException e) {
if (DBG) Log.wtf(TAG, "MissingResourceException", e);
updateEngineStatus(R.string.tts_status_not_supported);
updateWidgetState(false);
return false;
}
int defaultAvailable = mTts.setLanguage(mCurrentDefaultLocale);
if (defaultAvailable == TextToSpeech.LANG_NOT_SUPPORTED ||
defaultAvailable == TextToSpeech.LANG_MISSING_DATA ||
notInAvailableLangauges) {
if (DBG) Log.d(TAG, "Default locale for this TTS engine is not supported.");
updateEngineStatus(R.string.tts_status_not_supported);
updateWidgetState(false);
return false;
} else {
if (isNetworkRequiredForSynthesis()) {
updateEngineStatus(R.string.tts_status_requires_network);
} else {
updateEngineStatus(R.string.tts_status_ok);
}
updateWidgetState(true);
return true;
}
}
/**
* Ask the current default engine to return a string of sample text to be
* spoken to the user.
*/
private void getSampleText() {
String currentEngine = mTts.getCurrentEngine();
if (TextUtils.isEmpty(currentEngine)) currentEngine = mTts.getDefaultEngine();
// TODO: This is currently a hidden private API. The intent extras
// and the intent action should be made public if we intend to make this
// a public API. We fall back to using a canned set of strings if this
// doesn't work.
Intent intent = new Intent(TextToSpeech.Engine.ACTION_GET_SAMPLE_TEXT);
intent.putExtra("language", mCurrentDefaultLocale.getLanguage());
intent.putExtra("country", mCurrentDefaultLocale.getCountry());
intent.putExtra("variant", mCurrentDefaultLocale.getVariant());
intent.setPackage(currentEngine);
try {
if (DBG) Log.d(TAG, "Getting sample text: " + intent.toUri(0));
startActivityForResult(intent, GET_SAMPLE_TEXT);
} catch (ActivityNotFoundException ex) {
Log.e(TAG, "Failed to get sample text, no activity found for " + intent + ")");
}
}
/**
* Called when voice data integrity check returns
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == GET_SAMPLE_TEXT) {
onSampleTextReceived(resultCode, data);
} else if (requestCode == VOICE_DATA_INTEGRITY_CHECK) {
onVoiceDataIntegrityCheckDone(data);
}
}
private String getDefaultSampleString() {
if (mTts != null && mTts.getLanguage() != null) {
try {
final String currentLang = mTts.getLanguage().getISO3Language();
String[] strings = getActivity().getResources().getStringArray(
R.array.tts_demo_strings);
String[] langs = getActivity().getResources().getStringArray(
R.array.tts_demo_string_langs);
for (int i = 0; i < strings.length; ++i) {
if (langs[i].equals(currentLang)) {
return strings[i];
}
}
} catch (MissingResourceException e) {
if (DBG) Log.wtf(TAG, "MissingResourceException", e);
// Ignore and fall back to default sample string
}
}
return getString(R.string.tts_default_sample_string);
}
private boolean isNetworkRequiredForSynthesis() {
Set<String> features = mTts.getFeatures(mCurrentDefaultLocale);
if (features == null) {
return false;
}
return features.contains(TextToSpeech.Engine.KEY_FEATURE_NETWORK_SYNTHESIS) &&
!features.contains(TextToSpeech.Engine.KEY_FEATURE_EMBEDDED_SYNTHESIS);
}
private void onSampleTextReceived(int resultCode, Intent data) {
String sample = getDefaultSampleString();
if (resultCode == TextToSpeech.LANG_AVAILABLE && data != null) {
if (data != null && data.getStringExtra("sampleText") != null) {
sample = data.getStringExtra("sampleText");
}
if (DBG) Log.d(TAG, "Got sample text: " + sample);
} else {
if (DBG) Log.d(TAG, "Using default sample text :" + sample);
}
mSampleText = sample;
if (mSampleText != null) {
updateWidgetState(true);
} else {
Log.e(TAG, "Did not have a sample string for the requested language. Using default");
}
}
private void speakSampleText() {
final boolean networkRequired = isNetworkRequiredForSynthesis();
if (!networkRequired || networkRequired &&
(mTts.isLanguageAvailable(mCurrentDefaultLocale) >= TextToSpeech.LANG_AVAILABLE)) {
HashMap<String, String> params = new HashMap<String, String>();
params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, "Sample");
mTts.speak(mSampleText, TextToSpeech.QUEUE_FLUSH, params);
} else {
Log.w(TAG, "Network required for sample synthesis for requested language");
displayNetworkAlert();
}
}
@Override
public boolean onPreferenceChange(Preference preference, Object objValue) {
if (KEY_DEFAULT_RATE.equals(preference.getKey())) {
updateSpeechRate((Integer) objValue);
} else if (KEY_DEFAULT_PITCH.equals(preference.getKey())) {
updateSpeechPitchValue((Integer) objValue);
}
return true;
}
/**
* Called when mPlayExample, mResetSpeechRate or mResetSpeechPitch is
* clicked.
*/
@Override
public boolean onPreferenceClick(Preference preference) {
if (preference == mPlayExample) {
// Get the sample text from the TTS engine; onActivityResult will do
// the actual speaking
speakSampleText();
return true;
} else if (preference == mResetSpeechRate) {
int speechRateSeekbarProgress = getSeekBarProgressFromValue(
KEY_DEFAULT_RATE, TextToSpeech.Engine.DEFAULT_RATE);
mDefaultRatePref.setProgress(speechRateSeekbarProgress);
updateSpeechRate(speechRateSeekbarProgress);
return true;
} else if (preference == mResetSpeechPitch) {
int pitchSeekbarProgress = getSeekBarProgressFromValue(
KEY_DEFAULT_PITCH, TextToSpeech.Engine.DEFAULT_PITCH);
mDefaultPitchPref.setProgress(pitchSeekbarProgress);
updateSpeechPitchValue(pitchSeekbarProgress);
return true;
}
return false;
}
private void updateSpeechRate(int speechRateSeekBarProgress) {
mDefaultRate = getValueFromSeekBarProgress(KEY_DEFAULT_RATE,
speechRateSeekBarProgress);
try {
android.provider.Settings.Secure.putInt(getContentResolver(),
TTS_DEFAULT_RATE, mDefaultRate);
if (mTts != null) {
mTts.setSpeechRate(mDefaultRate / 100.0f);
}
if (DBG) Log.d(TAG, "TTS default rate changed, now " + mDefaultRate);
} catch (NumberFormatException e) {
Log.e(TAG, "could not persist default TTS rate setting", e);
}
return;
}
private void updateSpeechPitchValue(int speechPitchSeekBarProgress) {
mDefaultPitch = getValueFromSeekBarProgress(KEY_DEFAULT_PITCH,
speechPitchSeekBarProgress);
try {
android.provider.Settings.Secure.putInt(getContentResolver(),
TTS_DEFAULT_PITCH, mDefaultPitch);
if (mTts != null) {
mTts.setPitch(mDefaultPitch / 100.0f);
}
if (DBG) Log.d(TAG, "TTS default pitch changed, now" + mDefaultPitch);
} catch (NumberFormatException e) {
Log.e(TAG, "could not persist default TTS pitch setting", e);
}
return;
}
private void updateWidgetState(boolean enable) {
mPlayExample.setEnabled(enable);
mDefaultRatePref.setEnabled(enable);
mEngineStatus.setEnabled(enable);
}
private void updateEngineStatus(int resourceId) {
Locale locale = mCurrentDefaultLocale;
if (locale == null) {
locale = Locale.getDefault();
}
mEngineStatus.setSummary(getString(resourceId, locale.getDisplayName()));
}
private void displayNetworkAlert() {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(android.R.string.dialog_alert_title)
.setMessage(getActivity().getString(R.string.tts_engine_network_required))
.setCancelable(false)
.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
private void updateDefaultEngine(String engine) {
if (DBG) Log.d(TAG, "Updating default synth to : " + engine);
// Disable the "play sample text" preference and the speech
// rate preference while the engine is being swapped.
updateWidgetState(false);
updateEngineStatus(R.string.tts_status_checking);
// Keep track of the previous engine that was being used. So that
// we can reuse the previous engine.
//
// Note that if TextToSpeech#getCurrentEngine is not null, it means at
// the very least that we successfully bound to the engine service.
mPreviousEngine = mTts.getCurrentEngine();
// Step 1: Shut down the existing TTS engine.
if (mTts != null) {
try {
mTts.shutdown();
mTts = null;
} catch (Exception e) {
Log.e(TAG, "Error shutting down TTS engine" + e);
}
}
// Step 2: Connect to the new TTS engine.
// Step 3 is continued on #onUpdateEngine (below) which is called when
// the app binds successfully to the engine.
if (DBG) Log.d(TAG, "Updating engine : Attempting to connect to engine: " + engine);
mTts = new TextToSpeech(getActivity().getApplicationContext(), mUpdateListener, engine);
setTtsUtteranceProgressListener();
}
/*
* Step 3: We have now bound to the TTS engine the user requested. We will
* attempt to check voice data for the engine if we successfully bound to it,
* or revert to the previous engine if we didn't.
*/
public void onUpdateEngine(int status) {
if (status == TextToSpeech.SUCCESS) {
if (DBG) {
Log.d(TAG, "Updating engine: Successfully bound to the engine: " +
mTts.getCurrentEngine());
}
checkVoiceData(mTts.getCurrentEngine());
} else {
if (DBG) Log.d(TAG, "Updating engine: Failed to bind to engine, reverting.");
if (mPreviousEngine != null) {
// This is guaranteed to at least bind, since mPreviousEngine would be
// null if the previous bind to this engine failed.
mTts = new TextToSpeech(getActivity().getApplicationContext(), mInitListener,
mPreviousEngine);
setTtsUtteranceProgressListener();
}
mPreviousEngine = null;
}
}
/*
* Step 4: Check whether the voice data for the engine is ok.
*/
private void checkVoiceData(String engine) {
Intent intent = new Intent(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
intent.setPackage(engine);
try {
if (DBG) Log.d(TAG, "Updating engine: Checking voice data: " + intent.toUri(0));
startActivityForResult(intent, VOICE_DATA_INTEGRITY_CHECK);
} catch (ActivityNotFoundException ex) {
Log.e(TAG, "Failed to check TTS data, no activity found for " + intent + ")");
}
}
/*
* Step 5: The voice data check is complete.
*/
private void onVoiceDataIntegrityCheckDone(Intent data) {
final String engine = mTts.getCurrentEngine();
if (engine == null) {
Log.e(TAG, "Voice data check complete, but no engine bound");
return;
}
if (data == null){
Log.e(TAG, "Engine failed voice data integrity check (null return)" +
mTts.getCurrentEngine());
return;
}
android.provider.Settings.Secure.putString(getContentResolver(), TTS_DEFAULT_SYNTH, engine);
mAvailableStrLocals = data.getStringArrayListExtra(
TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES);
if (mAvailableStrLocals == null) {
Log.e(TAG, "Voice data check complete, but no available voices found");
// Set mAvailableStrLocals to empty list
mAvailableStrLocals = new ArrayList<String>();
}
if (evaluateDefaultLocale()) {
getSampleText();
}
final int engineCount = mEnginePreferenceCategory.getPreferenceCount();
for (int i = 0; i < engineCount; ++i) {
final Preference p = mEnginePreferenceCategory.getPreference(i);
if (p instanceof TtsEnginePreference) {
TtsEnginePreference enginePref = (TtsEnginePreference) p;
if (enginePref.getKey().equals(engine)) {
enginePref.setVoiceDataDetails(data);
break;
}
}
}
}
@Override
public Checkable getCurrentChecked() {
return mCurrentChecked;
}
@Override
public String getCurrentKey() {
return mCurrentEngine;
}
@Override
public void setCurrentChecked(Checkable current) {
mCurrentChecked = current;
}
@Override
public void setCurrentKey(String key) {
mCurrentEngine = key;
updateDefaultEngine(mCurrentEngine);
}
}