android - 从广播接收器或服务启动 Android TTS

Question

我正在尝试让 TTS 在后台运行。但是，我从来没有听到任何声音。我有一个启动服务的广播接收器。我把我的 TTS 代码放在这两个中，但它从不说话。我知道正在调用该方法(我在其上放置了一个断点)，但它仍然不起作用。

这是我的日志，但它似乎不包含有关 TTS 服务的任何内容。

10-04 22:45:30.663: WARN/InputManagerService(209): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@4423df40
10-04 22:45:37.363: INFO/PollingManager(449): calculateShortestInterval(): shortest interval is 540000
10-04 22:45:37.413: INFO/TLSStateManager(449): org.apache.harmony.nio.internal.SocketChannelImpl@4400ece0: Wrote out 29 bytes of data with 0 bytes remaining.
10-04 22:45:38.043: ERROR/IMAPEmailService(480): Can't create default IMAP system folder Trash. Please reconfigure the folder names.
10-04 22:45:40.123: ERROR/EONS(303): EF_PNN: No short Name
10-04 22:45:41.543: ERROR/WMSTS(171): Month is invalid: 0
10-04 22:45:42.043: WARN/AudioFlinger(172): write blocked for 212 msecs, 24 delayed writes, thread 0xb998

提前谢谢大家!

Answer 1

查看您的 TTS 代码将有助于人们更轻松地为您提供帮助。由于我已经在 BroadcastReceiver 中使用了 TTS，下面是一个从我的代码中删减的示例。

public static class TTS extends Service implements TextToSpeech.OnInitListener, OnUtteranceCompletedListener {
    private TextToSpeech mTts;
    private String spokenText;

    @Override
    public void onCreate() {
        mTts = new TextToSpeech(this, this);
        // This is a good place to set spokenText
    }

    @Override
    public void onInit(int status) {
        if (status == TextToSpeech.SUCCESS) {
            int result = mTts.setLanguage(Locale.US);
            if (result != TextToSpeech.LANG_MISSING_DATA && result != TextToSpeech.LANG_NOT_SUPPORTED) {
                mTts.speak(spokenText, TextToSpeech.QUEUE_FLUSH, null);
            }
        }
    }

    @Override
    public void onUtteranceCompleted(String uttId) {
        stopSelf();
    }

    @Override
    public void onDestroy() {
        if (mTts != null) {
            mTts.stop();
            mTts.shutdown();
        }
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }
}

在 BroadcastReceiver 中您希望它说话的位置启动 TTS 服务:

context.startService(new Intent(context, TTS.class));

我希望这对提问者有帮助(我相信他现在已经开始工作了)。