Question

I want to call the function foo repeatedly but the nstimer isnt working.can you please help me?

@implementation abc
-(id)init
{
   [NSTimer scheduledTimerWithTimeInterval:(1/16) target:self selector:@selector(foo) userInfo:nil repeats:YES];
}

This is my main

int main(int argc, char *argv[])
{
    abc *ab=[[abc alloc]init];



    [NSThread sleepForTimeInterval:100];


    [ab release];

    return 0;
}

Answer 1

It’s not working because [NSTimer scheduledTimerWithTimeInterval:...] (reference) states:

Creates and returns a new NSTimer object and schedules it on the
current run loop in the default mode.

… and you don’t have a run loop.

You can, for example, create an instance of NSApplication (i.e. a proper Cocoa App) in order for this to work (you can probably create your own run loop without creating a Cocoa App, but it would be a fair amount of work).