objective c - Periodically call to a web service in ios -


i have nstimer this:

[nstimer scheduledtimerwithtimeinterval:1.0 target:self selector:@selector(sliderupdate:) userinfo:nil repeats:yes];  -(void)sliderupdate:(id)sender {     int currenttime = (int)((newplayer.currenttime.value)/newplayer.currenttime.timescale);     slider.value=currenttime;     nslog(@"%i",currenttime);     song.currenttime=currenttime;     int currentpoint=(int)((newplayer.currenttime.value)/newplayer.currenttime.timescale);     int pointmins=(int)(currentpoint/60);     int pointsec=(int)(currentpoint%60);     nsstring *strminlabel=[nsstring stringwithformat:@"%02d:%02d",pointmins,pointsec];     lblslidermin.text=strminlabel;     song.strslidermin=strminlabel; }

what want do, is, in each , every 45 seconds, call web service:

example: 1st call in 45 seconds, second in 90 seconds, etc.

how can in nstimer?

you have modify nstimer 45 seconds:

[nstimer scheduledtimerwithtimeinterval:45 target:self selector:@selector(sliderupdate:) userinfo:nil repeats:yes];

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