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

状态条StatusBar

[UIApplication sharedApplication].statusBarHidden = YES;

 导航条NavigationBar

[self.navigationController setNavigationBarHidden:YES];

TabBar

方法1

[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;
}

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];   
}

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。
}