1.效果如下：

2.UINavigationController，導航控制器也是UIViewController的子類

(1)在Appdelegate.h中 設置UIWindow及其根控制器為導航控制器，代碼如下:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {// Override point for customization after application launch.UIWindow *window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];oneViewController *oneVC = [[oneViewController alloc] init];oneVC.view.backgroundColor =[UIColor grayColor];
// 設置導航控制器的根控制器UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:oneVC]; // 設置window為可見[window makeKeyAndVisible]; // 將AppDelegate的window屬性設置為自定義的windowself.window = window; // 設置窗口的根控制器為導航控制器window.rootViewController = nav;return YES; }

?(2)在導航控制器的根controller中設置如下代碼：

- (void)viewDidLoad {[super viewDidLoad]; // 設置標題self.navigationItem.title = @"第一個";UIBarButtonItem *camerBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:nil action:nil];UIBarButtonItem *secondBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:nil action:nil]; // self.navigationItem.leftBarButtonItem = camerBtn;self.navigationItem.leftBarButtonItems =@[camerBtn,secondBtn]; // 設置返回按鈕 #warning 這里是給下一個viewController設置的UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:nil action:nil];self.navigationItem.backBarButtonItem =backItem; }- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated. }

?其他兩個控制器中代碼基本如上，不在詳述。

轉載于:https://www.cnblogs.com/BJTUzhengli/p/5100445.html

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