语音触发器在Android应用程序中开始识别

Question

如何使用语音触发器打开识别内容？当用户说“可乐”时运行代码：

Intent it = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
it.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
it.putExtra(RecognizerIntent.EXTRA_PROMPT, "請說...");
this.startActivityForResult(it, 1);

Answer 1

private final int REQ_CODE_SPEECH_INPUT = 100;

private void promptSpeechInput() {

    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE,"en_US");
    intent.putExtra(RecognizerIntent.EXTRA_PROMPT,"請說...");
    try {
        startActivityForResult(intent, REQ_CODE_SPEECH_INPUT);
    } catch (ActivityNotFoundException a) {
        //speech_not_supported
    }
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
        case REQ_CODE_SPEECH_INPUT: {
            if (resultCode == Activity.RESULT_OK && null != data) {
                ArrayList<String> result = data
                        .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

                Log.v("tag","result: " + result.get(0)); 

                if(result.get(0).equals("coke")){
                    //do something
                }
            }
            break;
        }
    }
}