android - Lock Screen Volume Control with CCL and without CCL -

i can listen volume level in volumeservice. service listen volume level in background. problem is: can't control volume in lock screen. tried 2 different ways volume control

first way ccl
application class:

public class castapplication extends application {      private static string application_id;     public static final double volume_increment = 0.03;      @override     public void oncreate() {         super.oncreate();         application_id = getstring(r.string.app_id);         // initialize videocastmanager         videocastmanager.initialize(this, application_id, videocastcontrolleractivity.class, null).                 setvolumestep(volume_increment).enablefeatures(videocastmanager.feature_notification |videocastmanager.feature_lockscreen |                 videocastmanager.feature_wifi_reconnect | videocastmanager.feature_captions_preference |videocastmanager.feature_debugging);     } } 

mainactivity:

public class mainactivity extends fragmentactivity {     private videocastmanager mcastmanager;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          videocastmanager.checkgoogleplayservices(this);         mcastmanager = videocastmanager.getinstance();         intent i1 = new intent(this,volumeservice.class);         startservice(i1);     }      @override     public boolean dispatchkeyevent(keyevent event) {         if (mcastmanager.ondispatchvolumekeyevent(event, castapplication.volume_increment)) {             return true;         }         return super.dispatchkeyevent(event);     } } 

second way without ccl (with rrc)
mainactivity:

public class mainactivity extends fragmentactivity {     contentobserver msettingscontentobserver;     remotecontrolclient remotecontrolclient;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         intent intent = new intent(intent.action_media_button);         audiomanager maudiomanager = (audiomanager) getsystemservice(context.audio_service);         maudiomanager.requestaudiofocus(null, audiomanager.stream_ring,audiomanager.audiofocus_gain_transient_may_duck);         remotecontrolclientcompat mremotecontrolclientcompat = new remotecontrolclientcompat(pendingintent.getbroadcast(this.getapplicationcontext(), 0,intent, 0));         remotecontrolhelper.registerremotecontrolclient(maudiomanager,mremotecontrolclientcompat);         remotecontrolclient = new remotecontrolclient((pendingintent.getbroadcast(this.getapplicationcontext(), 0,intent, 0)));         mediarouter.getinstance(this.getapplicationcontext()).addremotecontrolclient(remotecontrolclient);         intent i1 = new intent(this,volumeservice.class);         startservice(i1);     } } 

service , contentobserver same both way

volumeservice:

public class volumeservice extends service {     contentobserver msettingscontentobserver;     @override     public void oncreate() {         super.oncreate();         msettingscontentobserver = new settingscontentobserver(this, new handler());         getapplicationcontext().getcontentresolver().registercontentobserver(                 android.provider.settings.system.content_uri, true,msettingscontentobserver);     }     @override     public ibinder onbind(intent intent) {         return null;     }     @override     public void ondestroy() {         super.ondestroy();         getapplicationcontext().getcontentresolver().unregistercontentobserver(msettingscontentobserver);     } } 

contentobserver:

public class settingscontentobserver extends contentobserver {     int previousvolume;     context context;      public settingscontentobserver(context c, handler handler) {         super(handler);         context = c;         audiomanager maudiomanager = (audiomanager) context.getsystemservice(context.audio_service);         previousvolume = maudiomanager.getstreamvolume(audiomanager.stream_ring);      }     @override     public boolean deliverselfnotifications() {         return super.deliverselfnotifications();     }     @override     public void onchange(boolean selfchange) {         super.onchange(selfchange);         audiomanager audio = (audiomanager) context.getsystemservice(context.audio_service);         int currentvolume = audio.getstreamvolume(audiomanager.stream_ring);         int delta = previousvolume - currentvolume;         if (delta > 0) {             log.i("myservice", "volume down");             previousvolume = currentvolume;         } else if (delta < 0) {             log.i("myservice", "volume up");             previousvolume = currentvolume;         }     } } 

manifest:

<uses-permission android:name="android.permission.access_network_state" />     <uses-permission android:name="android.permission.access_wifi_state" />      <uses-sdk         android:minsdkversion="14"         android:targetsdkversion="18" />      <application         android:name="com.yns.volumelock.castapplication"         android:allowbackup="true"         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"         android:theme="@style/apptheme" >         <meta-data             android:name="com.google.android.gms.version"             android:value="@integer/google_play_services_version" />          <activity             android:name=".mainactivity"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>          <receiver android:name="com.google.android.libraries.cast.companionlibrary.remotecontrol.videointentreceiver" >             <intent-filter>                 <action android:name="android.media.audio_becoming_noisy" />                 <action android:name="android.intent.action.media_button" />                 <action android:name="com.google.android.libraries.cast.companionlibrary.action.toggleplayback" />                 <action android:name="com.google.android.libraries.cast.companionlibrary.action.stop" />             </intent-filter>         </receiver>          <service             android:name="com.google.android.libraries.cast.companionlibrary.notification.videocastnotificationservice"             android:exported="false" >             <intent-filter>                 <action android:name="com.google.android.libraries.cast.companionlibrary.action.toggleplayback" />                 <action android:name="com.google.android.libraries.cast.companionlibrary.action.stop" />                 <action android:name="com.google.android.libraries.cast.companionlibrary.action.notificationvisibility" />             </intent-filter>         </service>         <service android:name="com.google.android.libraries.cast.companionlibrary.cast.reconnection.reconnectionservice" />          <activity             android:name="com.google.android.libraries.cast.companionlibrary.cast.tracks.captionspreferenceactivity"             android:label="@string/action_settings" >             <intent-filter>                 <action android:name="android.intent.action.main" />             </intent-filter>         </activity>          <service             android:name="com.yns.volumelock.volumeservice"             android:enabled="true" >         </service>     </application>