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Editorial Team
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Asked: 2026-05-24T22:45:59+00:00

When the user clicks a button, an action is started but if the user

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When the user clicks a button, an action is started but if the user quickly clicks the button 10 times, it will execute 10 times. I guess the disable doesn’t take effect until control returns from the event.

- (IBAction)btnQuickCheckClick:(id)sender {
  @try {
    self.btnQuickCheck.enabled = NO ;
    // Next line takes about 3 seconds to execute:
    [self pollRouter] ;
  }  
  @finally {
    self.btnQuickCheck.enabled = YES ;
  }    
}
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1 Answer

  1. Editorial Team

    You can update the UI by running the run loop after disabling the button before polling:

    - (IBAction)btnQuickCheckClick:(id)sender {
    self.btnQuickCheck.enabled = NO;
    // give some time for the update to take place
    [self performSelector:@selector(pollRouterMethod) withObject:nil afterDelay:0.1];   
}
- (void)pollRouterMethod {
    @try {
        [self pollRouter];
    } @catch (NSException * e) { }
    // re-enable the button
    self.btnQuickCheck.enabled = YES;
}

    Of course, this method is no substitute for running a time intensive task on another thread. For long tasks, multithreading is almost always the way to go.

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