TTS 错误：泄露的 ServiceConnection android.speech.tts.TextToSpeech答案

【问题标题】：TTS Error: leaked ServiceConnection android.speech.tts.TextToSpeechTTS 错误：泄露的 ServiceConnection android.speech.tts.TextToSpeech
【发布时间】：2017-03-09 06:32:17
【问题描述】：

解决方案

看来你必须在onActivityResult中调用super方法

super.onActivityResult(requestCode, resultCode, data);

当我按下 Activity 上的后退按钮时，我从 TTS 收到此错误。显然这是因为我没有调用 shutdown() 但我是，请参阅下面的 onDestroy()。我制作了一个活动扩展的抽象 TtsActivity 类。我在所有子类中调用 super.onDestroy()。

12-05 18:04:05.268: ERROR/ActivityThread(30240): Activity com.mysite.myapp.ActivitySelectItGame has leaked ServiceConnection android.speech.tts.TextToSpeech$1@43e9b4a0 that was originally bound here
12-05 18:04:05.268: ERROR/ActivityThread(30240): android.app.ServiceConnectionLeaked: Activity com.mysite.myapp.ActivitySelectItGame has leaked ServiceConnection android.speech.tts.TextToSpeech$1@43e9b4a0 that was originally bound here
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread$PackageInfo$ServiceDispatcher.<init>(ActivityThread.java:1121)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread$PackageInfo.getServiceDispatcher(ActivityThread.java:1016)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ContextImpl.bindService(ContextImpl.java:863)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.content.ContextWrapper.bindService(ContextWrapper.java:347)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.speech.tts.TextToSpeech.initTts(TextToSpeech.java:467)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.speech.tts.TextToSpeech.<init>(TextToSpeech.java:433)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at com.mysite.android.library.activity.ActivityTTS.onActivityResult(ActivityTTS.java:98)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at com.mysite.myapp.ActivityGame.onActivityResult(ActivityGame.java:445)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.Activity.dispatchActivityResult(Activity.java:3890)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread.deliverResults(ActivityThread.java:3511)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread.handleSendResult(ActivityThread.java:3557)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread.access$2800(ActivityThread.java:125)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2063)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.os.Handler.dispatchMessage(Handler.java:99)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.os.Looper.loop(Looper.java:123)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at android.app.ActivityThread.main(ActivityThread.java:4627)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at java.lang.reflect.Method.invokeNative(Native Method)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at java.lang.reflect.Method.invoke(Method.java:521)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-05 18:04:05.268: ERROR/ActivityThread(30240):     at dalvik.system.NativeStart.main(Native Method)

我的课程正在扩展的活动

public abstract class ActivityTTS extends Activity implements OnInitListener {
    //TEXT TO SPEECH SERVICE
    public static final int CHECK_TTS_AVAILABILITY = 101;
    private static final String TAG = "ActivityTTS";
    private TextToSpeech mTts; //Text to speech library

    //MESSAGES
    private String NO_TTS_ANDROID_MARKET_REDIRECT = 
            "'SpeechSynthesis Data Installer' is not installed on your system, you are being redirected to" +
            " the installer package. You may also be able to install it my going to the 'Home Screen' then " +
            "(Menu -> Settings -> Voice Input & output -> Text-to-speech settings)";
    private String NO_TTS_AVAILABLE = 
            "'SpeechSynthesis Data Installer' is not available on your system, " +
            "you may have to install it manually yourself. You may also be able to install it my going to the 'Home Screen' " +
            "then (Menu -> Settings -> Voice Input & output -> Text-to-speech settings)";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d(TAG, "onCreate() called in ActivityTTS");

        try { //A weird error was occurring on some phones with the TTS, hence the try catch
            //TTS Service
            Intent checkIntent = new Intent();
            checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
            startActivityForResult(checkIntent, CHECK_TTS_AVAILABILITY);
        } catch (Exception e) {
            Toast.makeText(this, NO_TTS_AVAILABLE, Toast.LENGTH_LONG).show();
            finish();
        }

    }






    @Override
    protected void onStart() {
        super.onStart();


    }






    @Override
    protected void onStop() {
        super.onStop();
    }



    /**
     * Add a custom audio file for a particular 
     * audio element.
     * 
     * @param text
     * @param filename
     */
    protected void addSpeech(String text, String filename ) {
        mTts.addSpeech(text, filename);
    }



    /**
     * For TTS
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        try {
            //Log.d(TAG, "TTS Response: "+requestCode);
            if (requestCode == CHECK_TTS_AVAILABILITY) {
                if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {

                    // success, create the TTS instance
                    this.mTts = new TextToSpeech(this, this);

                } else {
                    // missing data, install it
                    Toast.makeText(this, NO_TTS_ANDROID_MARKET_REDIRECT, Toast.LENGTH_LONG).show();

                    PackageManager pm = getPackageManager();
                    Intent installIntent = new Intent();
                    installIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                    ResolveInfo resolveInfo = pm.resolveActivity( installIntent, PackageManager.MATCH_DEFAULT_ONLY );

                    if( resolveInfo == null ) {
                       // Not able to find the activity which should be started for this intent
                        Toast.makeText(this, NO_TTS_AVAILABLE, Toast.LENGTH_LONG).show();
                    } else {
                       startActivity( installIntent );
                    }

                    finish();
                }
            }
        }catch (Exception e) {
            Log.e(TAG, "Unable to access service");
            finish();
        }

    }




    /**
     * Loads when the TTS is ready
     */
    @Override
    public void onInit(int status) {
        mTts.setLanguage(Locale.getDefault());
    }


    /**
     * Speak text
     */
    protected void speak(String text) {
        try{
            mTts.stop(); //Stop speaking
            mTts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
        }
        catch(Exception e) {
            Log.e(TAG, "TTS Failed - cannot say: "+text );
        }
    }


    /**
     * Speak a pre-recorded word
     */
    protected void speak(String text, File filename) {
        try{
            mTts.stop(); //Stop speaking
            mTts.addSpeech(text, filename.toString());
            mTts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
        }
        catch(Exception e) {
            Log.e(TAG, "TTS Failed - cannot say: "+text );
        }
    }


    @Override
    protected void onDestroy() {
        super.onDestroy();

        //Close the Text to Speech Library
        if(mTts != null) {

            mTts.stop();
            mTts.shutdown();
            Log.d(TAG, "TTS Destroyed");
        }
    }

    public void setLanguage(Locale audioLocale) {
        mTts.setLanguage(audioLocale);
    }
}

这是与ActivityGame中的活动相关的代码

public abstract class ActivityGame extends ActivityTTS {

...

    protected void speak() {
        if (Logging.INFO) Log.i(TAG, "Speaking");

        if(this.mVoicePreference) {
            String word = mBoundService.getCurrentWord().getSpelling();


            if(WordRecordingHelper.recordingExists(word)) {

                try{
                    File f = new File(Constants.SDCARD_RECORDINGS+WordRecordingHelper.formatRecordedWord(word));
                    super.addSpeech(word, f.getAbsolutePath());
                } catch (Exception e) {
                    if(Logging.WARN) Log.w(TAG, "An error occurred while trying to use addSpeech()", e);
                }
            }


            //play the audio
            super.speak(word);  
        }
    }



    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        ...

        }



    @Override
    protected void onDestroy() {
        super.onDestroy();

        ....
        }


}

这里是ActivitySelectItGame，它根本不引用TTS，只是扩展了ActivityGame

public class ActivitySelectItGame extends ActivityGame {
    ...
}

但是我从一个完全不相关的 Activity 中遇到了完全相同的问题，扩展了 ActivityTTS。

【问题讨论】：

mTts 中的值在哪里设置？
@gnobal 我更新了问题以添加更多信息
我认为您提到的解决方案不正确。就我而言，我必须确保在创建新实例之前完全执行 onDestroy()。

标签： android

【解决方案1】：

@Override
protected void onDestroy() {


    //Close the Text to Speech Library
    if(mTts != null) {

        mTts.stop();
        mTts.shutdown();
        Log.d(TAG, "TTS Destroyed");
    }
    super.onDestroy();
}

我认为问题是您在活动被破坏后关闭 mTts。尝试使用我发布的代码。让我知道这是否可行

【讨论】：

是否可以在ActivitySelectItGame中显示与mTts相关的代码
我更新了问题，但我从一个完全不相关的 Activity 中得到了完全相同的错误，该 Activity 扩展了 ActivityTTS

【解决方案2】：

每次创建 mtts 实例时都需要shutdown。

或者换句话说，如果你有多个new TextToSpeech(xxx)，你需要有相同数量的shutdown()。

这对我有用。

【讨论】：

【解决方案3】：

我不确定系统是否总是调用 onDestroy()。我已经看到它在我的模拟器中被跳过的实例。我不能每次都重现这种情况。我使用过 TTS 并且没有泄漏问题。 我在 onPause() 中调用 mTts.shutdown() 并在 onResume() 中重新初始化它。这对我来说很好。

【讨论】：

它实际上调用了 onDestroy，因为我在错误发生之前在 Android 日志中看到了我的 Log.d 语句。

【解决方案4】：

onCreate()，您在其中启动活动以获得结果以检查 TTS 是否可用，可以被框架多次调用。所以我认为你可能在onActivityResult() 中创建了多个 TTS 实例。有关详细信息，请参阅the diagram for the Activity class。注意onCreate()可以在调用onStop()后再次调用

【讨论】：

我只调用一次 onCreate() 时遇到了同样的错误 - 但在从对话框返回后也调用了它。那是 pb tnx

【解决方案5】：

在我的 Fragment 中使用 WebView 时，我得到了这个泄漏的连接。在 onCreateView 方法中，当我按下 Activity 时，我做了 setJavaScriptEnabled(true)，这导致了这个错误。为了摆脱它，我将设置移动到onResume（），并在onPause（）中将其设置为false，然后问题就消失了。

【讨论】：