iOS Dev (14) NavigationController基礎示例

•  

• AppDelegate

  .h

  #import 
  
  @class ViewController
  
  @interface AppDelegate: UIResponder 
  
  @property  UIWindow *window;
  @property  ViewController *vc;
  
  @end
  

  .m

  #import AppDelegate.h
  #import ViewController.h
  
  @implementation AppDelegate
  
  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
      self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
      self.vc = [[ViewController alloc] initWithNibName:nil bundle:nil];
      self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:self.vc]
      [self.window makeKeyAndVisible];
      return YES;
  }
  
  @end
  

  主視圖

  ViewController.h

  #import 
  
  @interface ViewController: UIViewController
  
  @end
  

  ViewController.m，注意看 pushMethod 和 presentMethod。注意後者與前者完全不同哦，前者是 self.navigationController 相關的方法，後者是 self 自己的（也就是 UIViewController 的）。注意後者有一個 completion 參數後，如果啥也不想寫就用 ^{} 來代替。

  #import ViewController.h
  #import LLViewController.h
  #import MMViewController.h
  
  @interface ViewController ()
  
  @end
  
  @implementation ViewController
  
  - (void)viewDidLoad
  {
      [super viewDidLoad];
  
      UIButton *pushButton = [[UIButton alloc] initWithFrame:CGRectMake(10, 200, 100, 100)];
      [pushButton setTitle:@Push forState:UIControlStateNormal];
      [pushButton setBackgroundColor:[UIColor redColor]];
      [pushButton addTarget:self action:@selector(pushMethod:) forControlEvents:UIControlEventTouchUpInside];
      [self.view addSubView:pushButton];
  
      UIButton *presentButton = [[UIButton alloc] initWithFrame:CGRectMake(10, 400, 100, 100)];
      [presentButton setTitle:@present forState:UIControlStateNormal];
      [presentButton setBackgroundColor:[UIColor redColor]];
      [presentButton addTarget:self action:@selector(presentMethod:) forControlEvents:UIControlEventTouchUpInside];
      [self.view addSubView:presentButton];
  }
  
  - (void)didReceiveMemoryWarning
  {
  }
  
  - (void)pushMethod:(UIButton *)button
  {
      [self.navigationController pushViewController:[[LLViewController alloc] init] animated:YES];
  }
  
  - (void)presentMethod:(UIButton *)button
  {
      [self presentViewController:[[MMViewController alloc] init] animated:YES completion:^{}]
  }
  
  @end
  

  另外兩個視圖

  上面演示的是從主視圖切換到另外兩個視圖，一個是LLViewController，一個是MMViewController。前者是從右向左移入的，後者是從下向上移入的。

  LLViewController.h

  #import 
  
  @interface LLViewController: UIViewController
  @end
  

  LLViewController.m，注意看 popMethod。

  #import LLViewController.h
  
  @interface LLViewController()
  @end
  
  @implementation LLViewController
  
  - (void)didViewLoad
  {
      [super didViewLoad];
  
      UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 200, 100, 100)];
      [button setTitle:@Pop forState:UIControlStateNormal];
      [button setBackgroundColor:[UIColor redColor]];
      [button addTarget:self action:@selector(popMethod:) forControlEvents:UIControlEventTouchUpInside];
      [self.view addSubView:button];
  }
  
  - (void)didReceiveMemoryWarning
  {
  }
  
  - (void)popMethod
  {
      [self.nagivationController popViewControllerAnimated:YES];
  }
  
  @end
  

  MMViewController.h

  #import 
  
  @interface MMViewController: UIViewController
  @end
  

  MMViewController.m 主要看 dismissMethod。注意這個方法與 presentMethod 是類似的，而與 pop 是完全不同的。

  #import MMViewController.h
  
  @interface MMViewController()
  @end
  
  @implementation MMViewController
  
  - (void)didViewLoad
  {
      [super didViewLoad];
  
      UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 400, 100, 100)];
      [button setTitle:@Dismiss forState:UIControlStateNormal];
      [button setBackgroundColor:[UIColor redColor]];
      [button addTarget:self action:@selector(dismissMethod:) forControlEvents:UIControlEventTouchUpInside];
      [self.view addSubView:button];
  }
  
  - (void)didReceiveMemoryWarning
  {
  }
  
  - (void)dismissMethod
  {
      [self dismissViewControllerAnimated:YES completion:^{}];
  }
  
  @end
  

  轉載請注明來自：http://blog.csdn.net/prevention