ios - NSTimer not firing, has correct method signature -


i'm using nstimer call method every second, doesn't work. can call manually using [refreshtimer fire]; otherwise doesn't work. ideas why?

here initialize timer:

refreshtimer = [nstimer scheduledtimerwithtimeinterval:2.0  target:self selector:@selector(sendrefreshpacket:) userinfo:nil repeats:yes];

and method:

- (void)sendrefreshpacket: (nstimer*) timer {     nslog(@"test"); }

try this:

dispatch_async(dispatch_get_main_queue(), ^{                 refreshtimer = [nstimer scheduledtimerwithtimeinterval:2.0  target:self selector:@selector(sendrefreshpacket:) userinfo:nil repeats:yes];             });

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