how to unset/kill static int variables in objective c

I am using static int variables but having some problem. Problem is that its not getting reset. If I leave this page and come again then I found previous values while I have reset it.

Please give me solution.

here is my code

- (void)updateQuestion:(NSTimer *)theTimer {
    static int questionCounter = 1;

    questionCounter += 1;


    count=(questionCounter%QUESTION_TIME_LIMIT);

    tfLeftTime.text=[NSString stringWithFormat:@"%d",QUESTION_TIME_LIMIT];


    tmLeftTime=[[NSTimer alloc] ini开发者_StackOverflowt];
    tmLeftTime=[NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(updateLeftTime:) userInfo:nil repeats:YES];
    [self playMusic];
    if (questionCounter>QUESTION_PER_LEVEL) {
        if ([tmQuestion isValid]) {
            [tmQuestion invalidate];
            questionCounter=1;
            count=1;
            tmQuestion=nil;
            [self showAdvertisement];
        }
    }

}

Thank & Regards Shivam

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You can also use a instance variable to have the effect you want.

The counter will remain as long as the object lives, and is destroyed when you no longer need it.

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1. You cannot declare a static variable in one method and use in in another one. I assume you declared it in the file, outside of any methods. Use instance variables instead.

2. You have a memory leak at:

   tmLeftTime=[[NSTimer alloc] init];

   tmLeftTime=[NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(updateLeftTime:) userInfo:nil repeats:YES];

First allocation of the tmLeftTime is never released.

[NSTimer scheduledTimerWithTimeInterval: target: selector: userInfo: repeats:] gives you an autoreleased timer.