IOS 开发状态栏隐藏的实现办法

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions  {    [application setStatusBarHidden:YES];    return YES;  }   

- (BOOL)prefersStatusBarHidden NS_AVAILABLE_IOS(7_0); // Defaults to NO  [objc] view plaincopyprint? - (BOOL)prefersStatusBarHidden  {    // iOS7后,[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];    // 已经不起作用了    return YES;  }