Android Speech Recognition Continuous Service

Question

I'm trying to create a service to run continuous speech recognition in Android 4.2. Using the answer from this link ( Android Speech Recognition as a service on Android 4.1 & 4.2 ), I created a service that is run from an Activity. My problem is that I get null exceptions when accessing `mTarget.mAudioManager` or `mTarget.mSpeechRecognizerIntent` in the handleMessage method. The target (and mTarget object created from it) is not null, but all the objects inside it are. What am I doing wrong here? Relevant Activity Code (static methods called from activity, activityContext is the activity this method is called from): ``` public static void init(Context context) { voiceCommandService = new VoiceCommandService(); activityContext = context; } public static void startContinuousListening() { Intent service = new Intent(activityContext, VoiceCommandService.class); activityContext.startService(service); Message msg = new Message(); msg.what = VoiceCommandService.MSG_RECOGNIZER_START_LISTENING…

Accepted Answer

Class members in MainActivity

```
private int mBindFlag;
private Messenger mServiceMessenger;
```

Start service in `onCreate()`

```
@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

Intent service = new Intent(activityContext, VoiceCommandService.class);
    activityContext.startService(service);
    mBindFlag = Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH ? 0 : Context.BIND_ABOVE_CLIENT;

}
```

Bind service in `onStart()`

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

bindService(new Intent(this, VoiceCommandService.class), mServiceConnection, mBindFlag);
}

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

if (mServiceMessenger != null)
    {
        unbindService(mServiceConnection);
        mServiceMessenger = null;
    }
}
```

`mServiceConnection` member

```
private final ServiceConnection mServiceConnection = new ServiceConnection()
{
    @Override
    public void onServiceConnected(ComponentName name, IBinder service)
    {
        if (DEBUG) {Log.d(TAG, "onServiceConnected");} //$NON-NLS-1$

mServiceMessenger = new Messenger(service);
        Message msg = new Message();
        msg.what = VoiceCommandService.MSG_RECOGNIZER_START_LISTENING;

try
        {
            mServiceMessenger.send(msg);
        } 
        catch (RemoteException e)
        {
            e.printStackTrace();
        }
    }

@Override
    public void onServiceDisconnected(ComponentName name)
    {
        if (DEBUG) {Log.d(TAG, "onServiceDisconnected");} //$NON-NLS-1$
        mServiceMessenger = null;
    }

}; // mServiceConnection
```

In the service

```
@Override
public IBinder onBind(Intent intent)
{
    Log.d(TAG, "onBind");  //$NON-NLS-1$

return mServerMessenger.getBinder();
}
```

Android Speech Recognition Continuous Service

Solution

Problem

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