How can I remove all performSelector:withObject:afterDelay:?

Question

I ran in to a EXC_BAD_ACCESS when deallocating an object that has few performSelector:withObject:afterDelay where the selector methods is calling another object and I am releasing the object.

Somewhere in my class I am calling:

[self performSelector:@selector(callObject1Function) withObject:nil afterDelay:2.0];

and in my class I have:

- (void)callObject1Function{
    [object1 function1]  // Here I am getting "EXC_BAD_ACCESS"
}

- (void)dealloc {
    [object1 release];
    [super dealloc];
}

I just don't understand I thought when you dealloc it the object, everything associated with the object should be removed or canceled, even the performSelector with delay!

score 28 · Accepted Answer · edited Jun 21 '16 at 08:27

28

Use NSObject's:

-cancelPreviousPerformRequestsWithTarget:selector:object:

to cancel any pending perform selectors.

edited Jun 21 '16 at 08:27

KlimczakM

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answered Jan 21 '10 at 04:26

Ben Gottlieb

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18

Also just NSObject's +cancelPreviousPerformRequestsWithTarget: if you want to eliminate all selector and object perform requests to that target without specifying selectors and objects – Bogatyr Aug 25 '10 at 09:48
You should cancelPreviousPerformRequestsWithTarget with the same target, the same selector and the *same* object. If the object is different, you didn't cancel anything. Important. – Leonardo May 20 '23 at 13:55

score 24 · Answer 2 · answered Dec 28 '12 at 05:00

24

I have used following code in my all apps and it's working.

[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(MethodName) object:nil];

Thanks, Hemang.

answered Dec 28 '12 at 05:00

Hemang

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How can I remove all performSelector:withObject:afterDelay:?

2 Answers2