uinavigationcontroller - UIAlertView showing up in other view when going back fast to previous view controller -

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i having problem uialertview. using nstimer showing uialertview on moment when loop done.

the problem:

my uialertview popping on previous viewcontroller when pressing button fast, before loop done. on moment when uialertview showing up, app crash when pressing button on uialertview.

how can check viewcontroller still delegate or not show in other view?

it crashing because have set current view controller delegate , while pressing no more in memory when alert appears on previous view while pressing @ time reference delegate handling no more why crashing.

uialertview crash issue on view controller


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