NSNotification being raised multiple times
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28-10-2019 - |
Frage
i am developing a e-book reader and i had encountered the following issue. i am using an IBAction method to post a NSNotification which inturn invokes a action method once a button is tapped. It is working absolutely fine for the first time... The IBAction method has to be called evry time i tap on the button.After completing this action, i need to go to my home page and then come back and click the button again. This is where i am facing the problem. The Method is getting called more than once from the second time and the number only keeps increasing.. Please help me with this....
//IBAction Method
if (sender.tag == PenToolAction) {
GLogInfo(@"Pen tool tapped");
[self hideSelf];
[[NSNotificationCenter defaultCenter] postNotificationName:PenToolActionInitialized object:nil];
}
Lösung
If you add the notification observer in a method called multiple times, you will receive the notification multiple times too.
Try to either put the [[NSNotificationCenter defaultCenter] addObserver:...]
in the init
method instead or call [[NSNotificationCenter defaultCenter] removeObserver:self]
right before.
Andere Tipps
Thanku you so much for ur support.. I found the solution for my question... The main culprit here in my code is the issue of memory management... I'v used x-code analyzer to check the leaks and found that i forgot to release a main variable..... I'v released the variable and now my code is working fine....