multithreading - In Android i want to run countdown timer who can run in background also -


hi friends developing 1 app in requirement run timer in background popular candy crush game actual requirement when open app first time in day want start countdown timer 24:00:00 after time suppose leave application , open other application during same time countdown timer must running never pause or never stop

i visit 8,9 tutorial not getting exact result please me out kind of class may use or tutorial link please in advance

you have 2 options: service , storing time of app launching. service killed system @ time, have save time on ondestroy method , when system relaunch service system call oncreate method need restore timer. second method easier. store current time on starting app , check differences. sample:

@override protected void onresume() {     super.onresume();      final sharedpreferences appprefs = getsharedpreferences("appprefs", mode_private);     final long launchtime = appprefs.getlong("launchtime", 0);     final long currenttime = system.currenttimemillis();      if(launchtime == 0){         //first launch         appprefs.edit().putlong("launchtime", currenttime);     }else{         long diff = currenttime - launchtime;         long minutespassed = diff / 1000 / 60;          if(24 * 60 <= minutespassed){             //24 hours passed since app launching         }else{             //24 hours didn't passed since app launching         }     } }

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