android - 使用 BroadcastReceiver Intent 查询 SpeechRecognizer 支持的语言

Question

我在使用 SpeechRecognizer.ACTION_GET_SUPPORTED_LANGUAGES 查询支持的语言时遇到问题。

private void queryLanguages() {
    Intent i = new Intent(RecognizerIntent.ACTION_GET_LANGUAGE_DETAILS);
    sendOrderedBroadcast(i, null);
}

现在，我知道它说 BroadcastReceiver 是在 RecognizerIntent.DETAILS_META_DATA 中指定的，但我不确定如何访问它。

所以基本上我要问的是如何创建一个 Intent 来检索可用的语言数据？

Answer 1

是这样实现的:

    Intent intent = new Intent(RecognizerIntent.ACTION_GET_LANGUAGE_DETAILS);
    context.sendOrderedBroadcast(intent, null, new HintReceiver(),
                    null, Activity.RESULT_OK, null, null);

---

    private static class HintReceiver extends BroadcastReceiver {
            @Override
            public void onReceive(Context context, Intent intent) {
                if (DBG)
                    Log.d(TAG, "onReceive(" + intent.toUri(0) + ")");
                if (getResultCode() != Activity.RESULT_OK) {
                    return;
                }
                // the list of supported languages. 
                ArrayList<CharSequence> hints = getResultExtras(true)
                        .getCharSequenceArrayList(
                                RecognizerIntent.EXTRA_SUPPORTED_LANGUAGES);

        }
    }

注意:

Whether these are actually provided is up to the particular implementation