ios - Local Notifications are working in the simulator, but doesn't work when i test it on my actual device -

i have timer function calls local notification timer ever set amount of seconds , supposed run until stopped button.

everything in viewcontroller.m file.

here code:

-(void)timer{ //num slider value num1 = num*60.0; self.showertimer = [nstimer scheduledtimerwithtimeinterval:num1                                  target:self                                selector:@selector(notification)                                userinfo:nil                                 repeats:yes];   } 

my notification should go off.

-(void)notification{  //nsdate *alarmtime = [[nsdate date] datebyaddingtimeinterval:num]; uiapplication *app = [uiapplication sharedapplication];  uilocalnotification *notifyalarm = [[uilocalnotification alloc] init];  // current date/time nsdate *today = [nsdate date]; nsdateformatter *dateformatter = [[nsdateformatter alloc] init]; // display in 12hr/24hr (i.e. 11:25pm or 23:25) format according user settings [dateformatter settimestyle:nsdateformattershortstyle]; nsstring *currenttime = [dateformatter stringfromdate:today]; //nslog(@"user's current time in preference format:%@",currenttime);  notifyalarm.firedate = [nsdate datewithtimeintervalsincenow:0]; notifyalarm.timezone = [nstimezone defaulttimezone]; notifyalarm.repeatinterval = 0; notifyalarm.soundname = @""; notifyalarm.alertbody = [nsstring stringwithformat:@"notified @ %@",currenttime]; [app schedulelocalnotification:notifyalarm]; } 

my first advise set timer on main loop.

without property:

dispatch_async(dispatch_get_main_queue(), ^{    // enclose timer code here    [nstimer scheduledtimerwithtimeinterval:num1 target:self selector:@selector(notification) userinfo:nil repeats:yes]; }); 

if want keep property:

__weak myviewcontroller *ablockself = self;  dispatch_async(dispatch_get_main_queue(), ^{    // enclose timer code here    ablockself.showtimer = [nstimer scheduledtimerwithtimeinterval:num1 target:self selector:@selector(notification) userinfo:nil repeats:yes]; }); 

second, not need keep reference of timer in --> self.showertimer. because run loop keeps strong reference repeating timer.

third, variable naming convention off. showertimer should named showertimer. although nothing problem.

finally, code looks fine , if notification working on simulator, check do not disturb setting on device. should off local notification show up.