iphone开发如何隐藏各种bar

转载至：http://blog.csdn.net/riveram/article/details/7291142

状态条StatusBar

[UIApplication sharedApplication].statusBarHidden = YES;

[UIApplication sharedApplication].statusBarHidden = YES;

 导航条NavigationBar

[self.navigationController setNavigationBarHidden:YES];

[self.navigationController setNavigationBarHidden:YES];

TabBar

方法1

[self.tabBarController.tabBar setHidden:YES];

[self.tabBarController.tabBar setHidden:YES];

这个方法有问题，虽然tabBar被隐藏了，但是那片区域变成了一片空白，无法被其他视图使用。

方法2

对于navigationController+tabBarController的结构，可以在push下一级的childController之前将childController的hidesBottomBarWhenPushed属性设为YES。

比如，可以在childController的初始化方法中做这件事，代码如下：

// The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.

 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
     if (self) {
         // Custom initialization.
         self.hidesBottomBarWhenPushed = YES;
     }
     return self;
 }

// The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
 
 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
     if (self) {
         // Custom initialization.
         self.hidesBottomBarWhenPushed = YES;
     }
     return self;
 }

方法3

- (void)makeTabBarHidden:(BOOL)hide
 {
     if ( [self.tabBarController.view.subviews count] < 2 )
     {
         return;
     }
     UIView *contentView;

     if ( [[self.tabBarController.view.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]] )
     {
         contentView = [self.tabBarController.view.subviews objectAtIndex:1];
     }
     else
     {
         contentView = [self.tabBarController.view.subviews objectAtIndex:0];
     }
     //    [UIView beginAnimations:@"TabbarHide" context:nil];
     if ( hide )
     {
         contentView.frame = self.tabBarController.view.bounds;
     }
     else
     {
         contentView.frame = CGRectMake(self.tabBarController.view.bounds.origin.x,
                                        self.tabBarController.view.bounds.origin.y,
                                        self.tabBarController.view.bounds.size.width,
                                        self.tabBarController.view.bounds.size.height - self.tabBarController.tabBar.frame.size.height);
     }

     self.tabBarController.tabBar.hidden = hide;
     //    [UIView commitAnimations];
 }

- (void)makeTabBarHidden:(BOOL)hide
 {
     if ( [self.tabBarController.view.subviews count] < 2 )
     {
         return;
     }
     UIView *contentView;
    
     if ( [[self.tabBarController.view.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]] )
     {
         contentView = [self.tabBarController.view.subviews objectAtIndex:1];
     }
     else
     {
         contentView = [self.tabBarController.view.subviews objectAtIndex:0];
     }
     //    [UIView beginAnimations:@"TabbarHide" context:nil];
     if ( hide )
     {
         contentView.frame = self.tabBarController.view.bounds;        
     }
     else
     {
         contentView.frame = CGRectMake(self.tabBarController.view.bounds.origin.x,
                                        self.tabBarController.view.bounds.origin.y,
                                        self.tabBarController.view.bounds.size.width,
                                        self.tabBarController.view.bounds.size.height - self.tabBarController.tabBar.frame.size.height);
     }
    
     self.tabBarController.tabBar.hidden = hide;
     //    [UIView commitAnimations];   
 }

时机

- (void)viewWillAppear:(BOOL)animated {
     [self setFullScreen:YES];
 }

 - (void)viewWillDisappear:(BOOL)animated {
     [self setFullScreen:NO];
 }

 - (void)setFullScreen:(BOOL)fullScreen {
     // 状态条
     [UIApplication sharedApplication].statusBarHidden = fullScreen;
     // 导航条
     [self.navigationController setNavigationBarHidden:fullScreen];
     // tabBar的隐藏通过在初始化方法中设置hidesBottomBarWhenPushed属性来实现。
 }

- (void)viewWillAppear:(BOOL)animated {
     [self setFullScreen:YES];
 }
 
 - (void)viewWillDisappear:(BOOL)animated {
     [self setFullScreen:NO];
 }
 
 - (void)setFullScreen:(BOOL)fullScreen {
     // 状态条
     [UIApplication sharedApplication].statusBarHidden = fullScreen;
     // 导航条
     [self.navigationController setNavigationBarHidden:fullScreen];
     // tabBar的隐藏通过在初始化方法中设置hidesBottomBarWhenPushed属性来实现。
 }