Question

我正在开发一个Android语音识别系统。我成功了。但谷歌语音对话框一直让我烦恼，我想摆脱它。即我想在后台运行此语音识别作为服务。我知道有很多SO帖子都有答案。但我的问题是这里的每个代码都是在原生java上，我在电话差距上发展。所以我无法将这个东西移植到手机间隙。我的代码如下。所以，任何帮助将不胜感激！我在手机上使用this插件。提前致谢。

package com.phonegap.plugins.speech;

import java.util.ArrayList;
import java.util.Locale;

import org.json.JSONArray;
import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.CallbackContext;

import android.util.Log;
import android.app.Activity;
import android.content.Intent;
import android.speech.RecognizerIntent;

/**
 * Style and such borrowed from the TTS and PhoneListener plugins
 */
public class SpeechRecognizer extends CordovaPlugin {
    private static final String LOG_TAG = SpeechRecognizer.class.getSimpleName();
    private static int REQUEST_CODE = 1001;

    private CallbackContext callbackContext;
    private LanguageDetailsChecker languageDetailsChecker;

    //@Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) {
        Boolean isValidAction = true;

        this.callbackContext= callbackContext;

        // Action selector
        if ("startRecognize".equals(action)) {
            // recognize speech
            startSpeechRecognitionActivity(args);
        } else if ("getSupportedLanguages".equals(action)) {
            getSupportedLanguages();
        } else {
            // Invalid action
            this.callbackContext.error("Unknown action: " + action);
            isValidAction = false;
        }

        return isValidAction;

    }

    // Get the list of supported languages
    private void getSupportedLanguages() {
        if (languageDetailsChecker == null){
            languageDetailsChecker = new LanguageDetailsChecker(callbackContext);
        }
        // Create and launch get languages intent
        Intent detailsIntent = new Intent(RecognizerIntent.ACTION_GET_LANGUAGE_DETAILS);
        cordova.getActivity().sendOrderedBroadcast(detailsIntent, null, languageDetailsChecker, null, Activity.RESULT_OK, null, null);

    }

    /**
     * Fire an intent to start the speech recognition activity.
     *
     * @param args Argument array with the following string args: [req code][number of matches][prompt string]
     */
    private void startSpeechRecognitionActivity(JSONArray args) {
        int maxMatches = 0;
        String prompt = "";
        String language = Locale.getDefault().toString();

        try {
            if (args.length() > 0) {
                // Maximum number of matches, 0 means the recognizer decides
                String temp = args.getString(0);
                maxMatches = Integer.parseInt(temp);
            }
            if (args.length() > 1) {
                // Optional text prompt
                prompt = args.getString(1);
            }
            if (args.length() > 2) {
                // Optional language specified
                language = args.getString(2);
            }
        }
        catch (Exception e) {
            Log.e(LOG_TAG, String.format("startSpeechRecognitionActivity exception: %s", e.toString()));
        }

        // Create the intent and set parameters
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, language);

        if (maxMatches > 0)
            intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, maxMatches);
        if (!prompt.equals(""))
            intent.putExtra(RecognizerIntent.EXTRA_PROMPT, prompt);

        cordova.startActivityForResult(this, intent, REQUEST_CODE);
    }

    /**
     * Handle the results from the recognition activity.
     */
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == Activity.RESULT_OK) {
            // Fill the list view with the strings the recognizer thought it could have heard
            ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

            returnSpeechResults(matches);
        }
        else {
            // Failure - Let the caller know
            this.callbackContext.error(Integer.toString(resultCode));
        }

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

    private void returnSpeechResults(ArrayList<String> matches) {
        JSONArray jsonMatches = new JSONArray(matches);
        this.callbackContext.success(jsonMatches);
    }

}

Answer 1

因为您的需求与插件提供的功能略有不同，所以您似乎需要write your own plugin。您当然可以使用插件源（特别是plugin.xml，SpeechRecognizer.js和SpeechRecognizer.java）作为示例，了解如何一般地实现它。

Speech Recogonition作为后台服务Phonegap / Cordova

1 个答案: