状态条StatusBar

1     [UIApplication sharedApplication].statusBarHidden = YES;

导航条NavigationBar

1     [self.navigationController setNavigationBarHidden:YES];

TabBar

方法1

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：

1 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.  2  3 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    4     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];  5     if (self) {
    6         // Custom initialization.  7         self.hidesBottomBarWhenPushed = YES;  8     }  9     return self; 10 }

方法3

http://www.azumi.cc/thread-539502-1-1.html

1 - (void)makeTabBarHidden:(BOOL)hide  2 {
    3     if ( [self.tabBarController.view.subviews count] < 2 )  4     {
    5         return;  6     }  7     UIView *contentView;  8     9     if ( [[self.tabBarController.view.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]] ) 10     {
   11         contentView = [self.tabBarController.view.subviews objectAtIndex:1]; 12     } 13     else 14     {
   15         contentView = [self.tabBarController.view.subviews objectAtIndex:0]; 16     } 17     //    [UIView beginAnimations:@"TabbarHide" context:nil]; 18     if ( hide ) 19     {
   20         contentView.frame = self.tabBarController.view.bounds;        21     } 22     else 23     {
   24         contentView.frame = CGRectMake(self.tabBarController.view.bounds.origin.x, 25                                        self.tabBarController.view.bounds.origin.y, 26                                        self.tabBarController.view.bounds.size.width, 27                                        self.tabBarController.view.bounds.size.height - self.tabBarController.tabBar.frame.size.height); 28     } 29    30     self.tabBarController.tabBar.hidden = hide; 31     //    [UIView commitAnimations];   32 }

时机

1 - (void)viewWillAppear:(BOOL)animated {
    2     [self setFullScreen:YES];  3 }  4  5 - (void)viewWillDisappear:(BOOL)animated {
    6     [self setFullScreen:NO];  7 }  8  9 - (void)setFullScreen:(BOOL)fullScreen {
   10     // 状态条 11     [UIApplication sharedApplication].statusBarHidden = fullScreen; 12     // 导航条 13     [self.navigationController setNavigationBarHidden:fullScreen]; 14     // tabBar的隐藏通过在初始化方法中设置hidesBottomBarWhenPushed属性来实现。 15 }