Question

I have question how to stop the timer. I don’t really understand how it works much though. Please help me.

I have an IQ app, let’s say there are 10 questions, each question not to be answered in 4 seconds.

- (void) requestForItem
{
    TrainEnglishAppDelegate *delegate = (TrainEnglishAppDelegate*)[UIApplication sharedApplication].delegate; 
    NSDictionary *item = [delegate.allQuestions objectAtIndex:z];


    questionLabel.text = [item objectForKey:kQuestion];
    questionNumber.text = [NSString stringWithFormat:@"Question %d/%d",no,totalNo];
    NSArray *answers = [item objectForKey:kAnswers];
    aLabel.text = [answers objectAtIndex:0];
    bLabel.text = [answers objectAtIndex:1];
    cLabel.text = [answers objectAtIndex:2];
    [NSTimer scheduledTimerWithTimeInterval:4.0 target:self selector:@selector(pressToNextQuestion:) userInfo:nil repeats:NO]; 
}

This works until the skip question button appears. User press next button, to skip question, but the timer in that question is still timing. Then when I am in the other question, my time is reduced. How can I reset the timer when I press skip? please help me. Thanks a lot

Answer 1

Timer invalidation can be done in the following way

        NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:4.0 target:self selector:@selector(pressToNextQuestion:) userInfo:nil repeats:NO]; 

        [timer invalidate]; //To stop the timer

So take your timer in a variable and to stop it, just use the second line wherever you want to stop it.