【iOS基础控件 - 15】- UINavigationController 多控制器 简单使用

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 2     // 设置window
 3     self.window = [[UIWindow alloc] init];
 4     self.window.frame = [[UIScreen mainScreen] bounds];
 5     self.window.backgroundColor = [UIColor grayColor]; // window是灰色背景
 6     [self.window makeKeyAndVisible];
 7    
 8    
 9     // 设置UINavigationController
10     UINavigationController *nvController = [[UINavigationController alloc] init];
11     nvController.view.backgroundColor = [UIColor blueColor]; // 设置蓝色背景
12     self.window.rootViewController = nvController;
13    
14     return YES;
15 }

 1     // 配置第一个子控制器
 2     ViewControllerOne *vc1 = [[ViewControllerOne alloc] init];
 3     [nvController pushViewController:vc1 animated:YES];
 4    
 5     // 配置第二个子控制器
 6     ViewControllerTwo *vc2 = [[ViewControllerTwo alloc] init];
 7     [nvController pushViewController:vc2 animated:YES];
 8    
 9     // 配置第三个子控制器，这是栈顶的控制器
10     ViewControllerThree *vc3 = [[ViewControllerThree alloc] init];
11     [nvController pushViewController:vc3 animated:YES];

1 - (void)applicationDidBecomeActive:(UIApplication *)application {
2     // 必须在加载完毕激活app后，所有的view的尺寸位置才能确定
3     UINavigationController *nvController = (UINavigationController *)self.window.rootViewController;
4     NSLog(@"%@", NSStringFromCGRect(nvController.view.frame)); // 整个导航控制器的frame
5     NSLog(@"%@", NSStringFromCGRect(nvController.navigationBar.frame)); // 导航条的frame
6 }
7  

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

1 - (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated; // Uses a horizontal slide transition. Has no effect if the view controller is already in the stack.

1     // 配置第一个子控制器
2     ViewControllerOne *vc1 = [[ViewControllerOne alloc] init];
3     [nvController pushViewController:vc1 animated:YES];

1     ViewControllerOne *vc1 = [[ViewControllerOne alloc] init];
2     [nvController addChildViewController:vc1];

1     // 配置第一个子控制器
2     ViewControllerOne *vc1 = [[ViewControllerOne alloc] init];
3     nvController.viewControllers = @[vc1];

1     // 传入一个viewController作为 nvController的 rootViewController
2     nvController = [[UINavigationController alloc] initWithRootViewController:vc1];

 1 - (IBAction)goToThree {
 2     // 配置第三个子控制器
 3     ViewControllerThree *vc3 = [[ViewControllerThree alloc] init];
 4     [self.navigationController pushViewController:vc3 animated:YES];
 5 }
 6 
 7 - (IBAction)gotoFour {
 8     // 配置第四个子控制器
 9     ViewControllerFour *vc4 = [[ViewControllerFour alloc] init];
10     [self.navigationController pushViewController:vc4 animated:YES];
11 }

1 // 这里是第三个，要回到第二个
2 - (IBAction)backtoTwo {
3     [self.navigationController popViewControllerAnimated:YES];
4 }

1 // 现在是第三个控制器的view，要回到第一个控制器的view
2 - (IBAction)backtoOne {
3     // 其实这里拿不到第一个控制器vc1的引用
4 //    [self.navigationController popToViewController:vc1 animated:YES];
5    
6     // 直接弹出，直到导航器的rootViewController，就是第一个子控制器vc1了
7     [self.navigationController popToRootViewControllerAnimated:YES];
8 }

1 @property(nonatomic,copy) NSString *title;  // Localized title for use by a parent controller.

1 - (void)viewDidLoad {
2     [super viewDidLoad];
3     self.navigationItem.title = @"第一个view";
4 }

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3     self.navigationItem.title = @"第二个控制器";
 4    
 5 //     设置左上角的item
 6     self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"我要回去" style:UIBarButtonItemStylePlain target:nil action:nil];
 7    
 8     // 设置右上角的item
 9     // 使用bar按钮
10     UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCompose target:nil action:nil];
11    
12     // 使用自定义view
13     UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithCustomView:[UIButton buttonWithType:UIButtonTypeContactAdd]];
14    
15     // 这是这是从右到左排列显示
16     self.navigationItem.rightBarButtonItems = @[item1,item2];
17 }

1 // 第二个控制器
2 - (void)viewDidLoad {
3     [super viewDidLoad];
4      ...
5     // 设置第二个控制器的“返回”样式
6     self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"速速回2" style:UIBarButtonItemStylePlain target:nil action:nil];
7 }

1 - (void)applicationDidBecomeActive:(UIApplication *)application {
2     // 必须在加载完毕激活app后，所有的view的尺寸位置才能确定
3     UINavigationController *nvController = (UINavigationController *)self.window.rootViewController;
4     NSLog(@"%@", NSStringFromCGRect(nvController.view.frame)); // 整个导航控制器的frame
5     NSLog(@"%@", NSStringFromCGRect(nvController.navigationBar.frame)); // 导航条的frame
6 }