广播接收器组件不允许绑定服务.如何从广播接收器开始文本到语音

Question

我的应用程序给出了BroadcastReceiver组件不允许绑定到服务的错误。当短信到达时，我正在呼叫广播接收器，文本将转换为语音。我的收件人来电正常。

但是我的代码给出了类似

的错误

FATAL EXCEPTION: main进程:texttospeech.tts.com.tts, PID: 12811java.lang.RuntimeException:无法启动receiver texttospeech.tts.com.tts.ttsBroadcast:android.content.ReceiverCallNotAllowedException: BroadcastReceiver组件不允许绑定到服务android.app.ActivityThread.handleReceiver (ActivityThread.java: 2618)android.app.ActivityThread.access 1700美元(ActivityThread.java: 148)android.app.ActivityThread H.handleMessage美元(ActivityThread.java: 1369)android.os.Handler.dispatchMessage (Handler.java: 102)android.os.Looper.loop (Looper.java: 135)android.app.ActivityThread.main (ActivityThread.java: 5312)在java.lang.reflect.Method。调用(本地方法)java.lang.reflect.Method.invoke (Method.java: 372)com.android.internal.os.ZygoteInit MethodAndArgsCaller.run美元(ZygoteInit.java: 901)com.android.internal.os.ZygoteInit.main (ZygoteInit.java: 696)产生原因:android.content.ReceiverCallNotAllowedException: BroadcastReceiver组件不允许绑定到服务android.app.ReceiverRestrictedContext.bindService (ContextImpl.java: 215)android.speech.tts.TextToSpeech.connectToEngine (TextToSpeech.java: 800)android.speech.tts.TextToSpeech.initTts (TextToSpeech.java: 770)在android.speech.tts.TextToSpeech。(TextToSpeech.java: 723)在android.speech.tts.TextToSpeech。(TextToSpeech.java: 702)在android.speech.tts.TextToSpeech。(TextToSpeech.java: 686)在texttospeech.tts.com.tts.ttsBroadcast.onReceive (ttsBroadcast.java: 23)android.app.ActivityThread.handleReceiver (ActivityThread.java: 2611)             android.app.ActivityThread.access 1700美元(ActivityThread.java: 148)             android.app.ActivityThread H.handleMessage美元(ActivityThread.java: 1369)             android.os.Handler.dispatchMessage (Handler.java: 102)             android.os.Looper.loop (Looper.java: 135)             android.app.ActivityThread.main (ActivityThread.java: 5312)             在java.lang.reflect.Method。调用(本地方法)             java.lang.reflect.Method.invoke (Method.java: 372)             com.android.internal.os.ZygoteInit MethodAndArgsCaller.run美元(ZygoteInit.java: 901)             com.android.internal.os.ZygoteInit.main (ZygoteInit.java: 696)

这是我的代码

ttsBroadcast.java

public class ttsBroadcast extends BroadcastReceiver implements TextToSpeech.OnInitListener {
    private TextToSpeech tts;
    private String msg;
    @Override
    public void onReceive(Context context, Intent intent) {

        Toast.makeText(context,"sms recived",Toast.LENGTH_LONG).show();
        tts = new TextToSpeech(context,this);
        tts.speak(msg,TextToSpeech.QUEUE_FLUSH,null);

    }
    @Override
    public void onInit(int i) {
        tts.setLanguage(Locale.ENGLISH);
    }
}

Answer 1

既然这个问题似乎仍然活跃，我将添加一些行。首先，我认为你应该有一个服务，并从BroadcastReceiver调用这个服务。这是一个可能的实现。

广播接收器:

public class ReadMessageBroadcastReceiver extends BroadcastReceiver {
public final static String TAG = "ReadMessageBroadcastReceiver";
public ReadMessageBroadcastReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
    if(intent.getAction().equals(Actions.ACTION_TTS_READ_MESSAGE)) {
        Log.v(TAG, "Read messages on tts received trough notification");
        String[] unreadMessages = intent.getStringArrayExtra(Constants.EXTRA_UNREAD_MESSAGES);
        if (unreadMessages != null) {
            Log.v(TAG, "Read messages on tts trough notification received " + unreadMessages.length
                    + " total messages");
            String messageNumber = context.getString(R.string.notification_message_number);
            ArrayList<String> allMessagesToRead = new ArrayList<>(unreadMessages.length);
            for (int i = 0; i < unreadMessages.length; i++) {
                StringBuilder stringBuilder = new StringBuilder();
                stringBuilder.append(messageNumber);
                stringBuilder.append(" ");
                stringBuilder.append(i + 1);
                stringBuilder.append(" ");
                stringBuilder.append(unreadMessages[i]);
                stringBuilder.append(" ");
                allMessagesToRead.add(stringBuilder.toString());
            }
            Log.d(TAG, "Texts to read loud: " + allMessagesToRead);
            Intent speechIntent = new Intent(context, TextToSpeechService.class);
            speechIntent.putStringArrayListExtra(TextToSpeechService.TEXT_TO_READ, allMessagesToRead);
            context.startService(speechIntent);
        }
    }
  }
}

这个广播接收器通过点击系统栏通知调用。接收者需要在AndroidManifest.xml中用一个特定的动作声明。

 <application>(all your stuff)
  <receiver
        android:name=".broadcastreceivers.ReadMessageBroadcastReceiver"
        android:enabled="true">
        <intent-filter>
            <action android:name="com.example.action.ACTION_TTS_READ_MESSAGE" />
        </intent-filter>
    </receiver>
 </application>

你还需要在应用程序

的某个地方声明这个动作

public static final String ACTION_TTS_READ_MESSAGE = "com.example.action.ACTION_TTS_READ_MESSAGE";

最后，您需要实现TTSService本身。我使用了这里的一些代码

public class TextToSpeechService extends Service implements TextToSpeech.OnInitListener {
public final static String TAG = "TextToSpeechService";
public static final String TEXT_TO_READ = "text";
private final String UTTERANCE_ID = "FINISHED_PLAYING";
private final int MULTI_LINE = 2;
private TextToSpeech tts;
private ArrayList<String> texts;
private boolean isInit;
private UtteranceProgressListener utteranceProgressListener = new UtteranceProgressListener() {
    @Override
    public void onStart(String utteranceId) {
    }
    @Override
    public void onDone(String utteranceId) {
        if (utteranceId.equals(UTTERANCE_ID)) {
            stopSelf();
        }
    }
    @Override
    public void onError(String utteranceId) {
        stopSelf();
    }
};
@Override
public void onCreate() {
    super.onCreate();
    tts = new TextToSpeech(getApplicationContext(), this);
    tts.setOnUtteranceProgressListener(utteranceProgressListener);
    Log.d(TAG, "onCreate");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    Log.d(TAG, "onStartCommand");
    texts = intent.getStringArrayListExtra(TTSService.TEXT_TO_READ);
    if (isInit) {
        speak();
    }
    return TextToSpeechService.START_NOT_STICKY;
}
@Override
public void onDestroy() {
    if (tts != null) {
        tts.stop();
        tts.shutdown();
    }
    Log.d(TAG, "onDestroy");
    super.onDestroy();
}
@Override
public void onInit(int status) {
    Log.d(TAG, "onInit");
    if (status == TextToSpeech.SUCCESS) {
        int result = tts.setLanguage(Locale.getDefault());
        if (result != TextToSpeech.LANG_MISSING_DATA
                && result != TextToSpeech.LANG_NOT_SUPPORTED) {
            speak();
            isInit = true;
        }
    }
}
private void speak() {
    if (tts != null) {
        // Speak with 3 parameters deprecated but necessary on pre 21 version codes
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // This is a single message
            String utteranceId = null;
            if (texts.size() < MULTI_LINE) {
                // If is a single message this needs to be the last one
                utteranceId = UTTERANCE_ID;
            }
            tts.speak(texts.get(0), TextToSpeech.QUEUE_FLUSH, null, utteranceId);
            if (texts.size() >= MULTI_LINE) {
                for (int i = 1; i < texts.size(); i++) {
                    if (texts.size() - 1 == i) {
                        // If is the last message add the id
                        utteranceId = UTTERANCE_ID;
                    }
                    tts.speak(texts.get(i), TextToSpeech.QUEUE_ADD, null, utteranceId);
                }
            }
        } else {
            HashMap<String, String> myHashAlarm = null;
            if (texts.size() < MULTI_LINE) {
                myHashAlarm = new HashMap<>();
                myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, UTTERANCE_ID);
            }
            tts.speak(texts.get(0), TextToSpeech.QUEUE_FLUSH, myHashAlarm);
            if (texts.size() >= MULTI_LINE) {
                for (int i = 1; i < texts.size(); i++) {
                    if (texts.size() - 1 == i) {
                        // If is the last message add the id
                        myHashAlarm = new HashMap<>();
                        myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,
                                UTTERANCE_ID);
                    }
                    tts.speak(texts.get(i), TextToSpeech.QUEUE_ADD, myHashAlarm);
                }
            }
        }
    }
}
@Override
public IBinder onBind(Intent arg0) {
    return null;
}

}

最后不要忘记在AndroidManifest.xml文件中注册你的服务

<service
    android:name=".services.TextToSpeechService"
    android:exported="false"/>

缺点，我想说，它需要太多的时间来启动(1秒或2秒取决于手机)。好的一面是，你不需要一直运行tts，也不需要按需启动和停止。由于在Intent上传递给服务的参数是ArrayList<String>，因此实现了一些逻辑来确定是否为一个系列中的最后一条消息。如果你只需要一个字符串，你可以简化实现。