深入理解iOS的状态栏

@interface UIApplication(UIApplicationDeprecated)

// Setting statusBarHidden does nothing if your application is using the default UIViewController-based status bar system.
@property(readwrite, nonatomic,getter=isStatusBarHidden) BOOL statusBarHidden 
NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController prefersStatusBarHidden]") __TVOS_PROHIBITED;

- (void)setStatusBarHidden:(BOOL)hidden animated:(BOOL)animated 
NS_DEPRECATED_IOS(2_0, 3_2) __TVOS_PROHIBITED;
 // use -setStatusBarHidden:withAnimation:
- (void)setStatusBarHidden:(BOOL)hidden withAnimation:(UIStatusBarAnimation)animation 
NS_DEPRECATED_IOS(3_2, 9_0, "Use -[UIViewController prefersStatusBarHidden]") __TVOS_PROHIBITED;

- (BOOL)prefersStatusBarHidden{
  return YES;
}

typedef NS_ENUM(NSInteger, UIStatusBarStyle) {
//默认样式，黑字透明状态栏，适合用于背景色为亮色的页面
  UIStatusBarStyleDefault                   = 0, // Dark content, for use on light backgrounds
//白字透明状态栏，适合用于背景色为暗色的页面
  UIStatusBarStyleLightContent   NS_ENUM_AVAILABLE_IOS(7_0) = 1, // Light content, for use on dark backgrounds

// iOS7.0以前黑底白字，iOS7以后跟UIStatusBarStyleLightContent效果一样
  UIStatusBarStyleBlackTranslucent NS_ENUM_DEPRECATED_IOS(2_0, 7_0, "Use UIStatusBarStyleLightContent") = 1,
// iOS7.0以前启动页为灰底白字，iOS7以后跟UIStatusBarStyleLightContent效果一样
  UIStatusBarStyleBlackOpaque   NS_ENUM_DEPRECATED_IOS(2_0, 7_0, "Use UIStatusBarStyleLightContent") = 2,
} __TVOS_PROHIBITED;

// Setting the statusBarStyle does nothing if your application is using the default UIViewController-based status bar system.
@property(readwrite, nonatomic) UIStatusBarStyle statusBarStyle 
NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController preferredStatusBarStyle]") __TVOS_PROHIBITED;
- (void)setStatusBarStyle:(UIStatusBarStyle)statusBarStyle animated:(BOOL)animated 
NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController preferredStatusBarStyle]") __TVOS_PROHIBITED;

- (UIStatusBarStyle)preferredStatusBarStyle{
  return UIStatusBarStyleLightContent;
}

- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation 
NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to UIStatusBarAnimationFade

// Override to return a child view controller or nil. If non-nil, that view controller's status bar appearance attributes will be used. If nil, self is used. Whenever the return values from these methods change, -setNeedsUpdatedStatusBarAttributes should be called.
- (nullable UIViewController *)childViewControllerForStatusBarStyle 
NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;

- (UIViewController *)childViewControllerForStatusBarStyle{
  return self.topViewController;
}

- (nullable UIViewController *)childViewControllerForStatusBarHidden 

NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED;

// Override to return the type of animation that should be used for status bar changes for this view controller. This currently only affects changes to prefersStatusBarHidden.
- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation 
NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to UIStatusBarAnimationFade

typedef NS_ENUM(NSInteger, UIStatusBarAnimation) {
  UIStatusBarAnimationNone,
  UIStatusBarAnimationFade NS_ENUM_AVAILABLE_IOS(3_2),
  UIStatusBarAnimationSlide NS_ENUM_AVAILABLE_IOS(3_2),
} __TVOS_PROHIBITED;