UI 常用方法總結之--- UINavigationController

UINavigationController : UIViewController

 

1.創建UINavigationController對象

UINavigationController *navCV = [[UINavigationController alloc]initWithRootViewController:mainVC]; 

通常和

self.window.rootViewController = navCV;

連用

 

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

推出第二個頁面

eg:[self.navigationController pushViewController:secondVC animated:YES];

 

3.- (UIViewController *)popViewControllerAnimated:(BOOL)animated; 

返回上一視圖

eg:[self.navigationController popViewControllerAnimated:YES];

 

4.- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated; 

返回指定視圖

eg:獲得viewController的棧

    UIViewController *viewC = [self.navigationController.viewControllers objectAtIndex:0];

    [self.navigationController popToViewController:viewC animated:YES];

 

5.- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated; 

返回根視圖

eg:[self.navigationController popToRootViewControllerAnimated:YES];

 

 

 

UINavigationItem : NSObject <NSCoding>

每個頁面要顯示在導航欄上的內容(標題,兩邊按鈕信息)

 

1.rightBarButtonItem

創建導航欄右邊按鈕

參數1 選擇一個系統提供的圖標信息

eg:self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(button:)]autorelease];

 

2.leftBarButtonItem

創建導航欄左邊按鈕

eg:self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"iconfont-yinle.png"] style:UIBarButtonItemStylePlain target:self action:@selector(button:)]autorelease];

 

3.hidesBackButton

隱藏返回按鈕

eg:self.navigationItem.hidesBackButton = YES;

 

4.titleView

標題相關設置

eg:self.navigationItem.titleView = [[[UISegmentedControl alloc]initWithItems:@[@"111",@"222"]]autorelease];

 

 

UINavigationbar

 

1.translucent

是否透明

eg:self.navigationController.navigationBar.translucent = YES;

 

2.barTintColor

bar的顏色eg:self.navigationController.navigationBar.barTintColor = [UIColor grayColor];

 

3.setNavigationBarHidden

隱藏bar

e.g.:[self.navigationController setNavigationBarHidden:NO];

 

4.automaticallyAdjustsScrollViewInsets

取消掉scrollView的系統設置的UIEdgeInsets

e.g.:elf.automaticallyAdjustsScrollViewInsets = YES;

(當頁面出現不可預知問題時可以嘗試使用這個開關)

 

5.setBackgroundImage

設置bar背景圖片

eg：[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"2.png"] forBarMetrics:UIBarMetricsDefault];