将语音识别限制为仅一种语言

Question

我一直在尝试使语音识别器每次只能识别所选的语言，但是似乎英语之间总是混在一起，从而造成了不一致。例如，用不同于英语的语言说话，并且您用该语言说的内容可能被设备“听错了”，从而使英语随机出现。 到目前为止，这是我一直在尝试的方法：

        final SpeechRecognizer speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this); //Creating SpeechRecognizer
        final Intent speechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        switch (languageSelection) {
            case "En":
                callSpeechBtn();
                break;
            case "Gr":
                speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "el-GR");
                callSpeechBtn();
                break;
            case "local":
                speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
                callSpeechBtn();
                break;
        }