要在iOS7中隐藏状态栏，你需要2行代码

inapplication:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions写入 (应用程序setStatusBarHidden:是的); 在信息。加上这个 基于视图-控制器的状态栏外观= NO

对于ios7在单个视图中使用viewWillappear方法:

[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:NO];

显示状态栏使用:

[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:NO];

只需在info中添加这两行。plist文件。它将修复iOS7和旧版本。

状态栏初始隐藏= YES 基于控制器的视图状态栏外观= NO

导航到项目并选择目标->通用，并看到“状态栏样式…“在应用程序启动时隐藏”复选框将被选中。这是可行的。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
application.statusBarHidden = YES;
return YES;
}

我发现在整个应用程序中隐藏状态栏最简单的方法是在UIViewController上创建一个类别并覆盖prefersStatusBarHidden。这样你就不必在每个视图控制器中都写这个方法。

UIViewController+HideStatusBar.h

#import <UIKit/UIKit.h>

@interface UIViewController (HideStatusBar)

@end

UIViewController+HideStatusBar.m

#import "UIViewController+HideStatusBar.h"

@implementation UIViewController (HideStatusBar)

//Pragma Marks suppress compiler warning in LLVM. 
//Technically, you shouldn't override methods by using a category, 
//but I feel that in this case it won't hurt so long as you truly 
//want every view controller to hide the status bar. 
//Other opinions on this are definitely welcome

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-protocol-method-implementation"

- (BOOL)prefersStatusBarHidden
{
    return YES;
}

#pragma clang diagnostic pop


@end

试试这个简单的方法:

- (void)viewWillAppear:(BOOL)animated
{
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];
}

- (void)viewWillDisappear:(BOOL)animated
{
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];
}