iOS編程第四版第10章 UINavigationController

本章講述內容如題。

類似於window，UINavigationController也有一個root view controller 

在最上層的controller中的view會被顯示出來。

它包含一個root view controller, 一個topviewcontroller和一個UINavigationBar

MVC關係如下圖：

實例步驟：

1. 創建UINavigationController 實例，並把它設爲window的root controller

196
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
<span style="white-space:pre">	</span>self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds]];
<span style="white-space:pre">	</span>// Override point for customization after application launch
<span style="white-space:pre">	</span>BNRItemsViewController *itemsViewController = [[BNRItemsViewController alloc] init];
<span style="white-space:pre">	</span>// Create an instance of a UINavigationController
<span style="white-space:pre">	</span>// its stack contains only itemsViewController
<span style="white-space:pre">	</span>UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:itemsViewController];
<span style="white-space:pre">	</span>self.window.rootViewController = itemsViewController;
<span style="white-space:pre">	</span>// Place navigation controller's view in the window hierarchy
<span style="white-space:pre">	</span>self.window.rootViewController = navController;
<span style="white-space:pre">	</span>self.window.backgroundColor = [UIColor whiteColor];
<span style="white-space:pre">	</span>[self.window makeKeyAndVisible];
<span style="white-space:pre">	</span>return YES;
}

2. 添加一個UIViewController作爲第二個頁面，同時創建其xib文件

3. 添加控件並綁定到自己的controller

4. pushing view controller

5. 在tableviewcontroller中，

- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
<span style="white-space:pre">	</span>BNRDetailViewController *detailViewController = [[BNRDetailViewController alloc] init];
<span style="white-space:pre">	</span>// Push it onto the top of the navigation controller's stack
<span style="white-space:pre">	</span>[self.navigationController pushViewController:detailViewController animated:YES];
}

6. 頁面之間數據傳遞

在UIViewController的viewWillAppear中綁定數據，viewWillDisappear中回寫數據。

源碼：https://github.com/ianzhengnan/Homepwner