android - Can`t run BlueTooth discovery from Service -

i can`t run startdiscovery (for bluetooth) service. service run sleep wakefulbroadcastreceiver (by timer). source code of service:

    public class locationservice extends service implements googleapiclient.connectioncallbacks, googleapiclient.onconnectionfailedlistener, locationlistener {      private static final string tag = "locationservice";     private bluetoothadapter btadapter = bluetoothadapter.getdefaultadapter();      @override     public void oncreate() {        super.oncreate();        log.d(tag, "service oncreate");         intentfilter filter = new intentfilter();        filter.addaction(bluetoothdevice.action_found);        filter.addaction(bluetoothadapter.action_discovery_started);        filter.addaction(bluetoothadapter.action_discovery_finished);        registerreceiver(mbtreceiver, filter);      }      @override     public int onstartcommand(intent intent, int flags, int startid) {         log.d(tag, "service onstartcommand");         btscanner();             return start_not_sticky;     }      @override     public void ondestroy() {        super.ondestroy();        if (btadapter != null) {           btadapter.canceldiscovery();        }     unregisterreceiver(mbtreceiver);     }      private void btscanner() {        log.e(tag, "==bt: run btscanner");                   btadapter.canceldiscovery();        btadapter.startdiscovery();        log.e(tag, "==bt: end btscanner");     }      private final broadcastreceiver mbtreceiver = new broadcastreceiver() {     @override     public void onreceive(context context, intent intent) {         string action = intent.getaction();         if (bluetoothadapter.action_discovery_started.equals(action)) {             log.e(tag, "==bt: started");         } else if (bluetoothadapter.action_discovery_finished.equals(action)) {             log.e(tag, "==bt: finished");         } else if (bluetoothdevice.action_found.equals(action)) {             bluetoothdevice device = (bluetoothdevice) intent.getparcelableextra(bluetoothdevice.extra_device);              log.e(tag, "==bt: " + device.getaddress());         }     }      };    } 

in log see:

service onstartcommand ==bt: run btscanner ==bt: end btscanner 

but don`t see:

==bt: started ==bt: finished 

and list of discovered devices.

in manifest permissions installed:

<uses-permission android:name="android.permission.wake_lock" /> <uses-permission android:name="android.permission.bluetooth" /> <uses-permission android:name="android.permission.bluetooth_admin" /> 

and service enabled in application field of manifest:

<service             android:name=".locationservice"             android:enabled="true"             android:exported="true" /> 

what did wrong? tnx.

are sure receiver has not been unregistered in ondestroy method before having time handle action? put break point in see what's happenning in there?