iOS开发 导航栏 UINavigationBar 属性

1，给导航栏设置背景图片

 [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@ "nav_bg.png" ] forBarMetrics:UIBarMetricsDefault]; 

2，设置导航栏字体颜色

 [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

3，设置导航栏的背景颜色

 [[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:120/255. green:193/255. blue:42/255. alpha:1.0]];

4，设置导航栏的titleview 的 图片

 self.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@ "appcoda-logo.png" ]]; 

5，导航栏多按钮

UIBarButtonItem *shareItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:nil];

  UIBarButtonItem *cameraItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:nil];

 NSArray *actionButtonItems = @[shareItem, cameraItem];

 self.navigationItem.rightBarButtonItems = actionButtonItems;

6，把状态栏的字体变白，  先在info  里面  设置   View controller-based status bar appearance   为NO   ，就可以用 下面的 代码 把它变白

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent

7，隐藏导航栏

- (BOOL)prefersStatusBarHidden

{

 return  YES; 

} 

8，改变导航栏 返回按钮上的 字

UIBarButtonItem *returnButtonItem = [[UIBarButtonItemalloc] init];

returnButtonItem.title =@"返回";

self.navigationItem.backBarButtonItem = returnButtonItem;

9，隐藏导航栏返回按钮

self.navigationItem.hidesBackButton = YES;

10，隐藏导航栏

self.navigationController.navigationBarHidden = NO;