iphone - want to add UInavigationBar rightBarButton like 'Now Playing' button of ipod, which doesnot disappears between view Transitions

Question

i am new to iphone dev, i want to add a button (sign out) which remains fixed on the navigation bar's right side for every view.i.e. even when tabs of TabBar are tapped, the Sign Out button should remain fixed.

Any help/suggestions would be appreciated. Thanks

Answer 1

由于每个 UIViewController 都有自己的导航项（导航栏中的一组视图），因此您必须在每个视图控制器的 -viewDidLoad 方法中添加相同的按钮。如果在您的应用程序中的任何地方都使用相同的按钮，则创建一个 UIViewController 的子类来完成此操作并在整个应用程序中重用该子类是有意义的。