android语音识别简单实现

首先,你的设备要支持语音识别,这属于android的一个框架,如果是手机的话,安装google的语音识别包就可以了.模拟器还没有试过能否通过安装来支持语音识别.

private void startVoiceRecognitionActivity() {
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        // 设置语言格式,使用免费的语音识别支持的语言.
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        // 设置提示文字,设备进行语音采集时,屏幕上的提示语
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "请对准话筒说话");
        mActivity
                .startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
    }

可以看到语音设别是通过intent启动的,识别结束之后,会将数据返回原来的activity.

所以需要重写onActivityResult方法.

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == VOICE_RECOGNITION_REQUEST_CODE
                && resultCode == RESULT_OK) {
            final ArrayList<String> matches = data
                    .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
            Builder builder = new AlertDialog.Builder(this);
            mList = new ListView(this);
            mList.setAdapter(new ArrayAdapter<String>(this,
                    android.R.layout.simple_list_item_1, matches));
            builder.setView(mList);
            final AlertDialog dialog = builder.create();
            dialog.show();
        }

        super.onActivityResult(requestCode, resultCode, data);
    }