AudioFX: create audio output change listener after it's dependencies

There is a chance the AudioOutputChangeListener calls back to
AudioFxService via it's callbacks before the DevicePreferenceManager is insantiated.
Ensure the DevicePreferenceManager is created before registering the callback.

Fixes the following error:
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.cyngn.audiofx.service.DevicePreferenceManager.isGlobalEnabled()' on a null object reference
at com.cyngn.audiofx.service.AudioFxService.updateQsTile(AudioFxService.java:272)
at com.cyngn.audiofx.service.AudioFxService.onAudioOutputChanged(AudioFxService.java:249)
at com.cyngn.audiofx.service.AudioOutputChangeListener$1.run(AudioOutputChangeListener.java:80)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.os.HandlerThread.run(HandlerThread.java:61)

OPO-743
Change-Id: I6cb52e676f4e91934e151b1d95b5f45a2dc85993

1 files changed, 3 insertions, 3 deletions

diff --git a/src/com/cyngn/audiofx/service/AudioFxService.java b/src/com/cyngn/audiofx/service/AudioFxService.java
index 1def25c..754664f 100644
--- a/src/com/cyngn/audiofx/service/AudioFxService.java
+++ b/src/com/cyngn/audiofx/service/AudioFxService.java
@@ -142,15 +142,15 @@ public class AudioFxService extends Service
         handlerThread.start();
         mHandler = new Handler(handlerThread.getLooper());
 
-        mOutputListener = new AudioOutputChangeListener(getApplicationContext(), mHandler);
-        mOutputListener.addCallback(this);
-
         mDevicePrefs = new DevicePreferenceManager(getApplicationContext());
         if (!mDevicePrefs.initDefaults()) {
             stopSelf();
             return;
         }
 
+        mOutputListener = new AudioOutputChangeListener(getApplicationContext(), mHandler);
+        mOutputListener.addCallback(this);
+
         mSessionManager = new SessionManager(getApplicationContext(), mHandler, mDevicePrefs);
         mOutputListener.addCallback(mDevicePrefs, mSessionManager);