有没有人知道为什么我在这里的TextToSpeech方法在Android 4.1上不再有效？
在sayIt()方法上，它始终返回Log.i(TAG, "Failure: TextToSpeech instance tts was not properly initialized");
public class SpeakSuperActivity extends Activity implements OnInitListener {
private final static String TAG = "TextToSpeech";
protected static final Locale defaultLocale = Locale.GERMAN;
private static int TTS_DATA_CHECK = 100;
protected TextToSpeech tts = null;
protected boolean ttsIsInit = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Use an Intent and startActivityForResult to check whether TTS data installed on the
// device. Result returned and acted on in method onActivityResult(int, int, Intent) below.
Intent checkIntent = new Intent();
checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(checkIntent, TTS_DATA_CHECK);
}
// protected void initTextToSpeech() {
// Log.d(TAG, "TTS initTextToSpeech() called");
// Intent intent = new Intent(Engine.ACTION_CHECK_TTS_DATA);
// startActivityForResult(intent, TTS_DATA_CHECK);
// }
protected void onActivityResultOld(int requestCode, int resultCode, Intent data) {
if (requestCode == TTS_DATA_CHECK) {
Log.d(TAG, "onActivityResult: TTS_DATA_CHECK fork reached");
if (resultCode == Engine.CHECK_VOICE_DATA_PASS) {
Log.d(TAG, "Data installed: Engine.CHECK_VOICE_DATA_PASS fork reached");
tts = new TextToSpeech(this, this);
// tts = new TextToSpeech(this, new OnInitListener() {
// public void onInit(int status) {
// if (status == TextToSpeech.SUCCESS) {
// Log.w(TAG, "TTS onInit() success :)");
// ttsIsInit = true;
// if (tts.isLanguageAvailable(Locale.UK) >= 0) {
// Log.d(TAG, "Local UK available");
// tts.setLanguage(Locale.UK);
// }
// if (tts.isLanguageAvailable(Locale.GERMAN) >= 0) {
// Log.d(TAG, "Local German available");
// tts.setLanguage(Locale.GERMAN);
// }
// tts.setPitch(0.8f);
// tts.setSpeechRate(1.1f);
// speak("Hallo Sprücheklopfer");
// } else if (status == TextToSpeech.ERROR) {
// Log.w(TAG, "TTS onInit() failed :(");
// }
// }
// });
} else {
Log.i(TAG, "TTS not installed yet, calling intent to install...");
Intent installVoice = new Intent(Engine.ACTION_INSTALL_TTS_DATA);
startActivity(installVoice);
}
}
}
// Create the TTS instance if TextToSpeech language data are installed on device. If not
// installed, attempt to install it on the device.
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == TTS_DATA_CHECK) {
if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
// Success, so create the TTS instance. But can't use it to speak until
// the onInit(status) callback defined below runs, indicating initialization.
Log.i(TAG, "Success, let's talk");
// XXX: NOTE: it is REALLY important to use new TextToSpeech(getApplicationContext(), this) instead of new TextToSpeech(this, this)!
tts = new TextToSpeech(getApplicationContext(), this);
// // Use static Locales method to list available locales on device
// Locale locales [] = Locale.getAvailableLocales();
// Log.i(TAG,"Locales Available on Device:");
// for(int i=0; i<locales.length; i++){
// String temp = "Locale "+i+": "+locales[i]+" Language="
// +locales[i].getDisplayLanguage();
// if(locales[i].getDisplayCountry() != "") {
// temp += " Country="+locales[i].getDisplayCountry();
// }
// Log.i(TAG, temp);
// }
} else {
// missing data, so install it on the device
Log.i(TAG, "Missing Data; Install it");
Intent installIntent = new Intent();
installIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(installIntent);
}
}
}
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
ttsIsInit = true;
// Set to a language locale after checking availability
Log.i(TAG, "defaultLocaleAvailable=" + tts.isLanguageAvailable(defaultLocale));
tts.setLanguage(defaultLocale);
// Examples of voice controls. Set to defaults of 1.0.
tts.setPitch(1.0F);
tts.setSpeechRate(1.0F);
// Issue a greeting and instructions in the default language
// speakGreeting(defaultLocale.getDisplayLanguage());
// sayIt("Hallo Sprücheklopfer", true);
} else {
ttsIsInit = false;
Log.i(TAG, "Failure: TextToSpeech instance tts was not properly initialized");
}
}
// protected void speak(String text) {
// Log.d(TAG, "TTS sould say: " + text);
// if (tts != null && ttsIsInit) {
// tts.speak(text, TextToSpeech.QUEUE_ADD, null);
// } else {
// Log.w(TAG, "TTS not initialised or null");
// }
// }
// Method to speak a string. The boolean flushQ determines whether the text is
// appended to the queue (if false), or if the queue is flushed first (if true).
public void sayIt(String text, boolean flushQ) {
if (tts != null && ttsIsInit) {
if (flushQ) {
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
} else {
tts.speak(text, TextToSpeech.QUEUE_ADD, null);
}
} else {
Log.i(TAG, "Failure: TextToSpeech instance tts was not properly initialized");
}
}
// Release TTS resources when finished
@Override
protected void onDestroy() {
if (tts != null) {
tts.stop();
tts.shutdown();
ttsIsInit = false;
}
super.onDestroy();
}
public void onInitOld(int status) {
Log.i(TAG, "TTS onInit() status :" + status);
if (status == TextToSpeech.SUCCESS) {
Log.w(TAG, "TTS onInit() success :)");
ttsIsInit = true;
if (tts.isLanguageAvailable(Locale.UK) >= 0) {
Log.d(TAG, "Local UK available");
tts.setLanguage(Locale.UK);
}
if (tts.isLanguageAvailable(Locale.GERMAN) >= 0) {
Log.d(TAG, "Local German available");
tts.setLanguage(Locale.GERMAN);
}
tts.setPitch(0.8f);
tts.setSpeechRate(1.1f);
sayIt("Hallo Sprücheklopfer", true);
} else if (status == TextToSpeech.ERROR) {
Log.w(TAG, "TTS onInit() failed :(");
} else {
Log.w(TAG, "TTS onInit() unknown status :" + status);
}
}
}