| /* |
| * 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); |
| } |
| |
| } |