Question

我试图让语音识别功能适用于我的Android 2.3.3应用，但缺少一些基本功能。

首先，我在AndroidManifest.xml文件的顶部：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myuser.myapp">
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"

        ... remainder omitted for brevity

我相信应该提示Android询问最终用户是否希望在启动时向麦克风授予我的应用权限（如果没有，请纠正我！）...

接下来，我有Activity，它满足了我应用程序语音识别功能的全部需求。基本上，我希望应用程序能够在有人大声说出的时候检测到＆＃34; Go ＆＃34;：

public class SpeechActivity extends AppCompatActivity implements RecognitionListener {
    private SpeechRecognizer speechRecognizer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_speech);

        int check = ContextCompat.checkSelfPermission(this, android.Manifest.permission.RECORD_AUDIO);
        if(check != PackageManager.PERMISSION_GRANTED) {
            throw new RuntimeException("Ya can't do that now, ya here.");
        }

        speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
        speechRecognizer.setRecognitionListener(this);

        Intent speechIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        speechIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        speechIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, "voice.recognition.test");
        speechIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 5);
        speechRecognizer.startListening(speechIntent);
        Log.i("SpeechActivity", "Speech Recognizer is listening");
    }

    @Override
    public void onReadyForSpeech(Bundle bundle) {

    }

    @Override
    public void onBeginningOfSpeech() {

    }

    @Override
    public void onRmsChanged(float v) {

    }

    @Override
    public void onBufferReceived(byte[] bytes) {

    }

    @Override
    public void onEndOfSpeech() {

    }

    @Override
    public void onError(int i) {

    }

    @Override
    public void onResults(Bundle bundle) {
        Log.i("SpeechActivity", "Speech was detected...");
        String spoken = "";
        ArrayList<String> data = bundle.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        for (int i = 0; i < data.size(); i++) {
            spoken += data.get(i);
        }

        Log.i(this.getClass().getName(), String.format("The word \"%s\" was detected.", spoken));
        if(spoken.equalsIgnoreCase("go")) {
            doSomething();
        }
    }

    @Override
    public void onPartialResults(Bundle bundle) {

    }

    @Override
    public void onEvent(int i, Bundle bundle) {

    }
}

我在三星Galaxy S7 Edge上运行应用程序，将手机连接到笔记本电脑（通过USB），点击Android Studio中的运行（应用程序）按钮，然后选择我的手机作为连接设备

当应用程序在我的手机上启动时，我注意到的第一件事是它不会提示我接受/拒绝应用程序使用麦克风的权限。这是一个早期警告告诉我有些事情是错误的。

但是，当我导航到SpeechActivity/activity_speech.xml屏幕时，我得到：

当这个运行时，我得到：

FATAL EXCEPTION: main
Process: com.example.myuser.myapp, PID: 9585
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myuser.myapp/com.example.myuser.myapp.SpeechActivity}: java.lang.RuntimeException: Ya can't do that now, ya here.
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2947)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3008)
   at android.app.ActivityThread.-wrap14(ActivityThread.java)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1650)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6688)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
Caused by: java.lang.RuntimeException: Ya can't do that now, ya here.
   at com.example.myuser.myapp.SpeechActivity.onCreate(SpeechActivity.java:43)
   at android.app.Activity.performCreate(Activity.java:6912)
   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126)
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2900)

我是否有可能需要下载并安装插件或APK才能使语音识别工作？为什么我的应用没有请求使用我手机麦克风的许可？语音识别器是如何开始/收听的，但似乎根本没有接受任何语音？

Answer 1

根据the documentation，这是一个危险的许可。您应该从用户那里请求。

RECORD_AUDIO：允许应用程序录制音频。

保护等级：危险

常量值：＆＃34; android.permission.RECORD_AUDIO＆＃34;

简单地说，您可以使用

检查您的应用是否拥有此权限

int permissionCheck = ContextCompat.checkSelfPermission(thisActivity,
    Manifest.permission.RECORD_AUDIO);

if (permissionCheck == PERMISSION_GRANTED) {
    // you have the permission, proceed to record audio

    speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
    speechRecognizer.setRecognitionListener(this);

    Intent speechIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    speechIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    speechIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, "voice.recognition.test");
    speechIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 5);
    speechRecognizer.startListening(speechIntent);
    Log.i("SpeechActivity", "Speech Recognizer is listening");

} 
else {

    // you don't have permission, try requesting for it

    ActivityCompat.requestPermissions(thisActivity,
            new String[]{Manifest.permission.RECORD_AUDIO},
            MY_PERMISSION_REQUEST_RECORD_AUDIO);
}

请花点时间阅读Android指南中的Requesting Permissions指南。

Android忽略了RECORD_AUDIO权限和Speech API实现

1 个答案: