/* * 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 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; import android.app.AlertDialog; import android.content.ActivityNotFoundException; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.provider.SearchIndexableResource; import android.speech.tts.TextToSpeech; import android.speech.tts.TextToSpeech.EngineInfo; import android.speech.tts.TtsEngines; import android.speech.tts.UtteranceProgressListener; import android.support.v7.preference.ListPreference; import android.support.v7.preference.Preference; import android.text.TextUtils; import android.util.Log; import android.util.Pair; import com.android.internal.logging.nano.MetricsProto.MetricsEvent; import com.android.settings.R; import com.android.settings.SettingsActivity; import com.android.settings.SettingsPreferenceFragment; import com.android.settings.search.BaseSearchIndexProvider; import com.android.settings.search.Indexable; import com.android.settings.widget.ActionButtonPreference; import com.android.settings.widget.GearPreference; import com.android.settings.widget.SeekBarPreference; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.MissingResourceException; import java.util.Objects; import java.util.Set; public class TextToSpeechSettings extends SettingsPreferenceFragment implements Preference.OnPreferenceChangeListener, GearPreference.OnGearClickListener, Indexable { private static final String STATE_KEY_LOCALE_ENTRIES = "locale_entries"; private static final String STATE_KEY_LOCALE_ENTRY_VALUES = "locale_entry_values"; private static final String STATE_KEY_LOCALE_VALUE = "locale_value"; private static final String TAG = "TextToSpeechSettings"; private static final boolean DBG = false; /** 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"; /** Engine picker. */ private static final String KEY_TTS_ENGINE_PREFERENCE = "tts_engine_preference"; /** Locale picker. */ private static final String KEY_ENGINE_LOCALE = "tts_default_lang"; /** Play/Reset buttons container. */ private static final String KEY_ACTION_BUTTONS = "action_buttons"; /** * 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 SeekBarPreference mDefaultPitchPref; private SeekBarPreference mDefaultRatePref; private ActionButtonPreference mActionButtons; private int mDefaultPitch = TextToSpeech.Engine.DEFAULT_PITCH; private int mDefaultRate = TextToSpeech.Engine.DEFAULT_RATE; private int mSelectedLocaleIndex = -1; /** The currently selected engine. */ private String mCurrentEngine; private TextToSpeech mTts = null; private TtsEngines mEnginesHelper = null; private String mSampleText = null; private ListPreference mLocalePreference; /** * 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); } }; @Override public 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); mEnginesHelper = new TtsEngines(getActivity().getApplicationContext()); mLocalePreference = (ListPreference) findPreference(KEY_ENGINE_LOCALE); mLocalePreference.setOnPreferenceChangeListener(this); mDefaultPitchPref = (SeekBarPreference) findPreference(KEY_DEFAULT_PITCH); mDefaultRatePref = (SeekBarPreference) findPreference(KEY_DEFAULT_RATE); mActionButtons = ((ActionButtonPreference) findPreference(KEY_ACTION_BUTTONS)) .setButton1Text(R.string.tts_play) .setButton1Positive(true) .setButton1OnClickListener(v -> speakSampleText()) .setButton1Enabled(false) .setButton2Text(R.string.tts_reset) .setButton2Positive(false) .setButton2OnClickListener(v -> resetTts()) .setButton1Enabled(true); if (savedInstanceState == null) { mLocalePreference.setEnabled(false); mLocalePreference.setEntries(new CharSequence[0]); mLocalePreference.setEntryValues(new CharSequence[0]); } else { // Repopulate mLocalePreference with saved state. Will be updated later with // up-to-date values when checkTtsData() calls back with results. final CharSequence[] entries = savedInstanceState.getCharSequenceArray(STATE_KEY_LOCALE_ENTRIES); final CharSequence[] entryValues = savedInstanceState.getCharSequenceArray(STATE_KEY_LOCALE_ENTRY_VALUES); final CharSequence value = savedInstanceState.getCharSequence(STATE_KEY_LOCALE_VALUE); mLocalePreference.setEntries(entries); mLocalePreference.setEntryValues(entryValues); mLocalePreference.setValue(value != null ? value.toString() : null); mLocalePreference.setEnabled(entries.length > 0); } mTts = new TextToSpeech(getActivity().getApplicationContext(), mInitListener); setTtsUtteranceProgressListener(); initSettings(); // Prevent restarting the TTS connection on rotation setRetainInstance(true); } @Override public void onResume() { super.onResume(); if (mTts == null || mCurrentDefaultLocale == null) { return; } if (!mTts.getDefaultEngine().equals(mTts.getCurrentEngine())) { try { mTts.shutdown(); mTts = null; } catch (Exception e) { Log.e(TAG, "Error shutting down TTS engine" + e); } mTts = new TextToSpeech(getActivity().getApplicationContext(), mInitListener); setTtsUtteranceProgressListener(); initSettings(); } else { // Do set pitch correctly after it may have changed, and unlike speed, it doesn't change // immediately. final ContentResolver resolver = getContentResolver(); mTts.setPitch(android.provider.Settings.Secure.getInt(resolver, TTS_DEFAULT_PITCH, TextToSpeech.Engine.DEFAULT_PITCH) / 100.0f); } 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; } } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); // Save the mLocalePreference values, so we can repopulate it with entries. outState.putCharSequenceArray(STATE_KEY_LOCALE_ENTRIES, mLocalePreference.getEntries()); outState.putCharSequenceArray(STATE_KEY_LOCALE_ENTRY_VALUES, mLocalePreference.getEntryValues()); outState.putCharSequence(STATE_KEY_LOCALE_VALUE, mLocalePreference.getValue()); } 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"); } if (mCurrentEngine != null) { EngineInfo info = mEnginesHelper.getEngineInfo(mCurrentEngine); Preference mEnginePreference = findPreference(KEY_TTS_ENGINE_PREFERENCE); ((GearPreference) mEnginePreference).setOnGearClickListener(this); mEnginePreference.setSummary(info.label); } 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(); getActivity() .runOnUiThread( new Runnable() { @Override public void run() { mLocalePreference.setEnabled(true); } }); } 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); 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); 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."); updateWidgetState(false); return false; } else { 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); if (resultCode != TextToSpeech.Engine.CHECK_VOICE_DATA_FAIL) { updateDefaultLocalePref(data); } } } private void updateDefaultLocalePref(Intent data) { final ArrayList<String> availableLangs = data.getStringArrayListExtra(TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES); final ArrayList<String> unavailableLangs = data.getStringArrayListExtra(TextToSpeech.Engine.EXTRA_UNAVAILABLE_VOICES); if (availableLangs == null || availableLangs.size() == 0) { mLocalePreference.setEnabled(false); return; } Locale currentLocale = null; if (!mEnginesHelper.isLocaleSetToDefaultForEngine(mTts.getCurrentEngine())) { currentLocale = mEnginesHelper.getLocalePrefForEngine(mTts.getCurrentEngine()); } ArrayList<Pair<String, Locale>> entryPairs = new ArrayList<Pair<String, Locale>>(availableLangs.size()); for (int i = 0; i < availableLangs.size(); i++) { Locale locale = mEnginesHelper.parseLocaleString(availableLangs.get(i)); if (locale != null) { entryPairs.add(new Pair<String, Locale>(locale.getDisplayName(), locale)); } } // Sort it Collections.sort( entryPairs, new Comparator<Pair<String, Locale>>() { @Override public int compare(Pair<String, Locale> lhs, Pair<String, Locale> rhs) { return lhs.first.compareToIgnoreCase(rhs.first); } }); // Get two arrays out of one of pairs mSelectedLocaleIndex = 0; // Will point to the R.string.tts_lang_use_system value CharSequence[] entries = new CharSequence[availableLangs.size() + 1]; CharSequence[] entryValues = new CharSequence[availableLangs.size() + 1]; entries[0] = getActivity().getString(R.string.tts_lang_use_system); entryValues[0] = ""; int i = 1; for (Pair<String, Locale> entry : entryPairs) { if (entry.second.equals(currentLocale)) { mSelectedLocaleIndex = i; } entries[i] = entry.first; entryValues[i++] = entry.second.toString(); } mLocalePreference.setEntries(entries); mLocalePreference.setEntryValues(entryValues); mLocalePreference.setEnabled(true); setLocalePreference(mSelectedLocaleIndex); } /** Set entry from entry table in mLocalePreference */ private void setLocalePreference(int index) { if (index < 0) { mLocalePreference.setValue(""); mLocalePreference.setSummary(R.string.tts_lang_not_selected); } else { mLocalePreference.setValueIndex(index); mLocalePreference.setSummary(mLocalePreference.getEntries()[index]); } } 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); } else if (preference == mLocalePreference) { String localeString = (String) objValue; updateLanguageTo( (!TextUtils.isEmpty(localeString) ? mEnginesHelper.parseLocaleString(localeString) : null)); checkDefaultLocale(); return true; } return true; } private void updateLanguageTo(Locale locale) { int selectedLocaleIndex = -1; String localeString = (locale != null) ? locale.toString() : ""; for (int i = 0; i < mLocalePreference.getEntryValues().length; i++) { if (localeString.equalsIgnoreCase(mLocalePreference.getEntryValues()[i].toString())) { selectedLocaleIndex = i; break; } } if (selectedLocaleIndex == -1) { Log.w(TAG, "updateLanguageTo called with unknown locale argument"); return; } mLocalePreference.setSummary(mLocalePreference.getEntries()[selectedLocaleIndex]); mSelectedLocaleIndex = selectedLocaleIndex; mEnginesHelper.updateLocalePrefForEngine(mTts.getCurrentEngine(), locale); // Null locale means "use system default" mTts.setLanguage((locale != null) ? locale : Locale.getDefault()); } private void resetTts() { // Reset button. int speechRateSeekbarProgress = getSeekBarProgressFromValue( KEY_DEFAULT_RATE, TextToSpeech.Engine.DEFAULT_RATE); mDefaultRatePref.setProgress(speechRateSeekbarProgress); updateSpeechRate(speechRateSeekbarProgress); int pitchSeekbarProgress = getSeekBarProgressFromValue( KEY_DEFAULT_PITCH, TextToSpeech.Engine.DEFAULT_PITCH); mDefaultPitchPref.setProgress(pitchSeekbarProgress); updateSpeechPitchValue(pitchSeekbarProgress); } 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) { mActionButtons.setButton1Enabled(enable); mDefaultRatePref.setEnabled(enable); mDefaultPitchPref.setEnabled(enable); } 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(); } /** 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 + ")"); } } /** 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(); } } @Override public void onGearClick(GearPreference p) { if (KEY_TTS_ENGINE_PREFERENCE.equals(p.getKey())) { EngineInfo info = mEnginesHelper.getEngineInfo(mCurrentEngine); final Intent settingsIntent = mEnginesHelper.getSettingsIntent(info.name); if (settingsIntent != null) { startActivity(settingsIntent); } else { Log.e(TAG, "settingsIntent is null"); } } } public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = new BaseSearchIndexProvider() { @Override public List<SearchIndexableResource> getXmlResourcesToIndex( Context context, boolean enabled) { final SearchIndexableResource sir = new SearchIndexableResource(context); sir.xmlResId = R.xml.tts_settings; return Arrays.asList(sir); } @Override public List<String> getNonIndexableKeys(Context context) { final List<String> keys = super.getNonIndexableKeys(context); keys.add("tts_engine_preference"); return keys; } }; }