UINavigationController详解

通过这个接口可以初始化自定义的工具栏和导航栏

- (instancetype)initWithNavigationBarClass:(Class)navigationBarClass toolbarClass:(Class)toolbarClass NS_AVAILABLE_IOS(5_0)

使用水平滑动过渡。如果视图控制器已在堆栈中在调用就没有效果

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated;

将栈顶的控制器弹出并返回这个弹出的控制器

- (UIViewController *)popViewControllerAnimated:(BOOL)animated; // Returns the popped controller.

弹出控制器直到指定的控制器在栈顶，返回弹出控制器的集合

- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated; // Pops view controllers until the one specified is on top. Returns the popped controllers.

除了第一个控制器，其他全部弹出，返回弹出控制器的集合

- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated; // Pops until there's only a single view controller left on the stack. Returns the popped controllers.

返回栈顶控制器

@property(nonatomic,readonly,retain) UIViewController *topViewController; // The top view controller on the stack.

返回模态视图控制器如果有的话，否则就是栈顶的控制器

@property(nonatomic,readonly,retain) UIViewController *visibleViewController; // Return modal view controller if it exists. Otherwise the top view controller.

当前导航控制器的视图控制器栈

@property(nonatomic,copy) NSArray *viewControllers; // The current view controller stack.

设置导航控制器的栈集合

- (void)setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated NS_AVAILABLE_IOS(3_0); // If animated is YES, then simulate a push or pop depending on whether the new top view controller was previously in the stack.

显示/隐藏导航栏

@property(nonatomic,getter=isNavigationBarHidden) BOOL navigationBarHidden;

滑动返回手势

@property(nonatomic, readonly) UIGestureRecognizer *interactivePopGestureRecognizer NS_AVAILABLE_IOS(7_0);

据说在自定义了leftBarbuttonItem后左滑返回手势失效了怎么办?