在完成对当前视图的处理之前,无法单击导航工具栏上的后退按钮 [英]back button on navigation toolbar not clickable until it finish complete processing of current view
是否可以使用UINavigationController但隐藏其导航栏(将其替换为自定义工具栏)并返回按钮 [英]Is it possible use UINavigationController but hide its navigation bar (replace it with customized toolbar) and go back button