run android application at a time -

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i new in android.

i use bellow code run application @ special time. times when mobile phone locked , screen off , service stops , not work.

public class timeservice extends service { ibinder mbinder; timer t; public ibinder onbind(intent intent) {     return mbinder; } public void ondestroy(){     t.cancel(); } public void ontaskremoved(intent rootintent){     intent restartserviceintent = new intent(getapplicationcontext(), this.getclass());     restartserviceintent.setpackage(getpackagename());     pendingintent restartservicependingintent = pendingintent.getservice(getapplicationcontext(), 1, restartserviceintent, pendingintent.flag_one_shot);     alarmmanager alarmservice = (alarmmanager) getapplicationcontext().getsystemservice(context.a  larm_service);     alarmservice.set(             alarmmanager.elapsed_realtime,             systemclock.elapsedrealtime() + 1000,             restartservicependingintent);     super.ontaskremoved(rootintent); } public int onstartcommand(intent intent, int flags, int startid) {     final dbhelper db=new dbhelper(this);     int time[]=db.getalarmtime();     calendar c = calendar.getinstance();     dateformat dateformat = new simpledateformat("yyyy-mm-dd");         int hour = c.get(calendar.hour_of_day);         int minute=c.get(calendar.minute);         int rt=(time[0]*3600+time[1]*60)-(hour*3600+minute*60)*1000;         t=new timer();         t.schedule(                 new timertask() {                     public void run() {                         //codes...                         stopservice(i);                         startservice(i);                     }                 },rt         );     return start_sticky; } }

when device goes sleep state, code not called, suggest use alarmmanager handle code, instead of service. can put code inside receiver's onreceive method, , if need can acquire wakelock until code executed.


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