Android RecognizerIntent 语音识别

Question

如果 RecognizerIntent 由于用户未说话而结束，如何处理图像 (ImageView) 的可见性

if (RecognizerIntent.EXTRA_RESULTS == null){
image1.setVisibility(View.VISIBLE);///microphone icon
}

或

if (RecognizerIntent.ACTION_RECOGNIZE_SPEECH == null){
image1.setVisibility(View.INVISIBLE);///microphone
}

谢谢

Answer 1

在上面的代码中，您只是在测试常量是否为空，而事实并非如此。您必须通过

在代码中的某处开始识别

    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    //... put other settings in the Intent 
    startActivityForResult(intent, REQUEST_CODE);

并在

中接收结果

     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data)
     {
       if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
         ArrayList<String> results = data.getStringArrayListExtra(
                RecognizerIntent.EXTRA_RESULTS);
          //... do your stuf with results
         }
     super.onActivityResult(requestCode, resultCode, data);
     }

一种更可自定义的方法是直接使用 SpeechRecognizer。参见示例 this question .