Android widget stops working after a while? -

i have flashlight app widget. widget used turn flashlight on , off , not display main activity or anything. after few hours, however, widget nothing. mean if click it, nothing happens. have 2 classes accomplish provider , receiver.

provider:

public class widgetprovider extends appwidgetprovider {      @    override    public void onupdate(context context, appwidgetmanager appwidgetmanager,      int[] appwidgetids) {        intent receiver = new intent(context, flashlightwidgetreceiver.class);      receiver.setaction("com_flashlight");      receiver.putextra(appwidgetmanager.extra_appwidget_ids, appwidgetids);      pendingintent pendingintent = pendingintent.getbroadcast(context, 0, receiver, 0);        remoteviews views = new remoteviews(context.getpackagename(),        r.layout.appwidget_layout);      views.setonclickpendingintent(r.id.imagebutton, pendingintent);        appwidgetmanager.updateappwidget(appwidgetids, views);      }  }

receiver:

public class flashlightwidgetreceiver extends broadcastreceiver {    private static boolean islighton = false;    private static camera camera;    mediaplayer mp;@    override    public void onreceive(context context, intent intent) {      remoteviews views = new remoteviews(context.getpackagename(), r.layout.appwidget_layout);        if (islighton) {        views.setimageviewresource(r.id.imagebutton, r.drawable.btn_switch_off);        mp = mediaplayer.create(context, r.raw.light_switch_off);      } else {        views.setimageviewresource(r.id.imagebutton, r.drawable.btn_switch_on);        mp = mediaplayer.create(context, r.raw.light_switch_on);      }      mp.setoncompletionlistener(new mediaplayer.oncompletionlistener() {          @        override        public void oncompletion(mediaplayer mp) {          // todo auto-generated method stub          mp.release();        }      });      mp.start();      appwidgetmanager appwidgetmanager = appwidgetmanager.getinstance(context);      appwidgetmanager.updateappwidget(new componentname(context, widgetprovider.class),        views);        if (islighton) {        if (camera != null) {          camera.stoppreview();          camera.release();          camera = null;          islighton = false;        }        } else {        camera = camera.open();          if (camera == null) {          toast.maketext(context, "no camera!", toast.length_short).show();        } else {          camera.parameters param = camera.getparameters();          param.setflashmode(camera.parameters.flash_mode_torch);          try {            camera.setparameters(param);            camera.startpreview();            islighton = true;          } catch (exception e) {            toast.maketext(context, "no flash!", toast.length_short).show();          }        }      }    }  }

setup:

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"      android:minwidth="40dp"      android:minheight="40dp"      android:maxwidth="40dp"      android:maxheight="40dp"      android:updateperiodmillis="86400000"      android:initiallayout="@layout/appwidget_layout"      android:resizemode="horizontal|vertical">  </appwidget-provider>

update: reducing update interval makes widget refresh more if it's stuck works again after 30 min , might freeze again sometime.

update 2: changing date instantly freezes widget until it's refreshed.

update 3: changing date somehow restarts launcher , whenever launcher restarted widget freezes 30 mins.

look post, think problem explained here the dark side of app widgets