objective c - iOS ViewControllers Flow -


now, have table view called products add button on navigation bar. when click on add button, new view controller pushed show called additem. here thing, can open new view controllers additem , reopen products a?

may description little bit confused. productstableviewcontroller --(push)--> additemviewcontroller --(modal/push)--> aviewcontroller --(modal)--> productstableviewcontroller(should exact same first one)

and there may controllers between additemviewcontroller , aviewcontroller.

i have 2 solution: 1. when open productstableviewcontroller a, same instance before 2. create new instance of productstableviewcontroller , data singleton class.

my concern is there memory leak or protential risk?

your best bet use delegates. not sure why want this, if have vcs in stack, , "productstableviewcontroller" root, have move top of stack.


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