State that TTS language is not supported if not in available list.

Bad TTS implementation of isLanguageAvailable may cause settings to
think that given language is available. This change adds additional
check, by searching locale in list of available locales returned
form TTS CheckVoiceData activity.

Bug: 9982002
Change-Id: Ic91cd1218349b8241e3f40f2343df52f3d900544

1 files changed, 44 insertions, 3 deletions

diff --git a/src/com/android/settings/tts/TextToSpeechSettings.java b/src/com/android/settings/tts/TextToSpeechSettings.java
index 10ac575..fa48a3f 100644
--- a/src/com/android/settings/tts/TextToSpeechSettings.java
+++ b/src/com/android/settings/tts/TextToSpeechSettings.java
@@ -42,6 +42,7 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Checkable;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
@@ -104,6 +105,7 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
 
     private String mSampleText = "";
     private Locale mCurrentDefaultLocale;
+    private List<String> mAvailableStrLocals;
 
     /**
      * The initialization listener used when we are initalizing the settings
@@ -144,6 +146,7 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
         mDefaultRatePref = (ListPreference) 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());
@@ -253,17 +256,50 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
         mCurrentDefaultLocale = defaultLocale;
 
         int defaultAvailable = mTts.setLanguage(defaultLocale);
-        if (defaultAvailable == TextToSpeech.LANG_NOT_SUPPORTED) {
+        if (evaluateDefaultLocale()) {
+            getSampleText();
+        }
+    }
+
+    private boolean evaluateDefaultLocale() {
+        if (mCurrentDefaultLocale == null) {
+            return false;
+        }
+        int defaultAvailable = mTts.setLanguage(mCurrentDefaultLocale);
+
+        // Check if language is listed in CheckVoices Action result as available voice.
+        String defaultLocaleStr = mCurrentDefaultLocale.getISO3Language();
+        boolean notInAvailableLangauges = true;
+        if (!TextUtils.isEmpty(mCurrentDefaultLocale.getISO3Country())) {
+            defaultLocaleStr += "-" + mCurrentDefaultLocale.getISO3Country();
+        }
+        if (!TextUtils.isEmpty(mCurrentDefaultLocale.getVariant())) {
+            defaultLocaleStr += "-" + mCurrentDefaultLocale.getVariant();
+        }
+        if (mAvailableStrLocals != null) {
+            for (String loc : mAvailableStrLocals) {
+                if (loc.equalsIgnoreCase(defaultLocaleStr)) {
+                    notInAvailableLangauges = false;
+                    break;
+                }
+            }
+        }
+
+        if (defaultAvailable == TextToSpeech.LANG_NOT_SUPPORTED ||
+                defaultAvailable == TextToSpeech.LANG_MISSING_DATA ||
+                mAvailableStrLocals != null && notInAvailableLangauges) {
             if (DBG) Log.d(TAG, "Default locale for this TTS engine is not supported.");
-            updateWidgetState(false);
             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);
             }
-            getSampleText();
+            updateWidgetState(true);
+            return true;
         }
     }
 
@@ -431,6 +467,7 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
         // 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.
@@ -515,6 +552,10 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
 
         Settings.Secure.putString(getContentResolver(), TTS_DEFAULT_SYNTH, engine);
 
+        mAvailableStrLocals = data.getStringArrayListExtra(
+                TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES);
+        evaluateDefaultLocale();
+
         final int engineCount = mEnginePreferenceCategory.getPreferenceCount();
         for (int i = 0; i < engineCount; ++i) {
             final Preference p = mEnginePreferenceCategory.getPreference(i);