解决方案:

通过重写方法在你的视图控制器或rootviewcontroller中设置它:

-(BOOL) prefersStatusBarHidden
    {
        return YES;
    }

我在iOS 7中实现了iOS 6的状态栏。

在info.plist中设置UIViewControllerBasedStatusBarAppearance为NO

(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
    [application setStatusBarStyle:UIStatusBarStyleLightContent];
    self.window.clipsToBounds =YES;
    self.window.frame =  CGRectMake(0,20,self.window.frame.size.width,self.window.frame.size.height);

    //Added on 19th Sep 2013
    NSLog(@"%f",self.window.frame.size.height);
    self.window.bounds = CGRectMake(0,0, self.window.frame.size.width, self.window.frame.size.height);
}

它可能会把你所有的视图都压低20个像素。要克服这一点，请使用以下代码在-(void)viewDidAppear:(BOOL)animated方法

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
    CGRect frame=self.view.frame;
    if (frame.size.height==[[NSUserDefaults standardUserDefaults] floatForKey:@"windowHeight"])
    {
        frame.size.height-=20;
    }
    self.view.frame=frame;
}

你必须在didFinishLauncing Method中设置窗口分配后的windowHeight Userdefaults值

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[[NSUserDefaults standardUserDefaults] setFloat:self.window.frame.size.height forKey:@"windowHeight"];

因为使用presentViewController:animated:completion:把window.rootViewController弄乱了。因此，我必须找到一个不同的方法来解决这个问题。我终于让它与模态和旋转工作通过子类化我的rootViewController的UIView。

.h

@interface RootView : UIView

@end

.m

@implementation RootView

-(void)setFrame:(CGRect)frame
{
    if (self.superview && self.superview != self.window)
    {
        frame = self.superview.bounds;
        frame.origin.y += 20.f;
        frame.size.height -= 20.f;
    }
    else
    {
        frame = [UIScreen mainScreen].applicationFrame;
    }

    [super setFrame:frame];
}

- (void)layoutSubviews
{
    self.frame = self.frame;

    [super layoutSubviews];
}

@end

现在你有了iOS7动画的强大解决方案。

Interface Builder中有一个选项，调用iOS 6/7 Delta属性，旨在解决偏移问题。

在Stack Overflow的问题界面构建器:什么是UIView的布局iOS 6/7 delta ?

下面是广泛使用Storyboard的项目的另一种方法:

目标:

这种方法的目标是在iOS7中重新创建与在iOS6中相同的状态栏样式(见问题标题“iOS7状态栏回到iOS6样式?”)。

简介:

为了实现这一点，我们尽可能多地使用故事板，通过向下移动状态栏重叠的UI元素(在iOS 7下)，同时使用增量来恢复iOS 6.1或更早版本的向下布局更改。在ios7中产生的额外空间然后被一个UIView占用，并将backgroundColor设置为我们选择的颜色。后者可以在代码中创建，也可以使用故事板(参见下面的替代方案)

假设:

为了在执行以下步骤时获得所需的结果，假设基于视图控制器的状态栏外观被设置为NO，并且您的状态栏样式被设置为“透明黑色样式(alpha of 0.5)”或“不透明黑色样式”。这两种设置都可以在项目设置的“信息”下找到或添加。

步骤:

Add a subview to the UIWindow to serve as your status bar background. To achieve this, add the following to your AppDelegate's application: didFinishLaunchingWithOptions: after makeKeyAndVisible if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_6_1) { UIView *statusBarBackgroundView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, yourAppsUIWindow.frame.size.width, 20)]; statusBarBackgroundView.backgroundColor = [UIColor blackColor]; [yourAppsUIWindow addSubview:statusBarBackgroundView]; } Since you programmatically added a background for iOS 7 ONLY, you will have to adjust the layout of your UI elements that are overlapped by the status bar accordingly whilst preserving their layout for iOS6. To achieve this, do the following: Ensure that Use Autolayout is unchecked for your Storyboard (this is because otherwise "iOS 6/7 Deltas" is not shown in the Size Inspector). To do this: select your Storyboard file show Utilities select "Show the File Inspector" Under "Interface Builder Document" uncheck "Use Autolayout" Optionally, to help you monitor the layout changes for both iOS 7 AND 6 as you apply them, select the "Assistant Editor", select "Preview" and "iOS 6.1 or earlier": Now select the UI element you want to adjust so it isn't overlapped by the status bar anymore Select "Show the Size Inspector" in the Utilities column Reposition your UI element along the Y-axis by the same amount as the statusbar bg height: And change the iOS6/7 Deltas value for Y by the same NEGATIVE amount as the statusbar bg height (Note the change in the iOS 6 preview if you're using it):

选择:

为了在故事板繁重的项目中添加更少的代码，并让状态栏背景自动旋转，而不是以编程方式为状态栏添加背景，你可以为每个视图控制器添加一个彩色视图，位于所称视图控制器的主视图的最顶部。然后你将改变这个新视图的高度delta为与你的视图高度相同的负数(使它在iOS 6下消失)。

这个替代方案的缺点(尽管考虑到自旋转兼容性可能可以忽略不计)是，如果你在iOS 6中查看你的故事板，这个额外的视图不会立即可见。如果你看了一下故事板的“文档大纲”，你就会知道它在那里。

这可能是一个压倒性的问题，如果你使用自动布局，因为你不能直接操作帧。有一个简单的解决方案，不需要太多的工作。

我最终在一个实用工具类中编写了一个实用方法，并从所有视图控制器的viewDidLayoutSubviews方法中调用它。

+ (void)addStatusBarIfiOS7:(UIViewController *)vc
    {
        if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_6_1) {
            CGRect viewFrame = vc.view.frame;
            if(viewFrame.origin.y == 20) {
                //If the view's y origin is already 20 then don't move it down.
                return;
            }
            viewFrame.origin.y+=20.0;
            viewFrame.size.height-= 20.0;
            vc.view.frame = viewFrame;
            [vc.view layoutIfNeeded];
        }
    }

重写视图控制器中的viewDidLayoutSubviews方法，在那里你想要状态栏。它会让你通过自动布局的负担。

- (void)viewDidLayoutSubviews
{
    [[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleLightContent];
    [super viewDidLayoutSubviews];
    [MyUtilityClass addStatusBarIfiOS7:self];
}