これがログ出力です
2013-03-16 14:02:59.301 Echo[65406:4503] child viewWillDisappear start
2013-03-16 14:02:59.303 Echo[65406:4503] child viewWillDisappear returning
2013-03-16 14:02:59.303 Echo[65406:4503] parent viewWillAppear start
2013-03-16 14:02:59.305 Echo[65406:4503] parent viewWillAppear returning
2013-03-16 14:02:59.307 Echo[65406:4503] parent finished calling popToRootViewControllerAnimated on child.navigationController
2013-03-16 14:03:30.120 Echo[65406:c07] child viewDidDisappear start
2013-03-16 14:03:30.121 Echo[65406:c07] child viewDidDisappear returning
2013-03-16 14:03:30.121 Echo[65406:c07] parent viewDidAppear start
2013-03-16 14:03:30.122 Echo[65406:c07] parent viewDidAppear returning
viewWillDisappear
それはとの間のクールな30秒viewDidDisappear
です。その間に他に何が起こっているのですか?