在完成對當前視圖的處理之前,無法單擊導航工具欄上的后退按鈕 [英]back button on navigation toolbar not clickable until it finish complete processing of current view
是否可以使用UINavigationController但隱藏其導航欄(將其替換為自定義工具欄)並返回按鈕 [英]Is it possible use UINavigationController but hide its navigation bar (replace it with customized toolbar) and go back button