关于ios:iOS状态栏字体颜色设置

2019.12.04 17:26

info.plist 属性View controller-based status bar appearance, 也就是UIViewControllerBasedStatusBarAppearance, 官网文档阐明如下:

A Boolean value indicating whether the status bar appearance is based on the style preferred for the current view controller.

一个布尔值，批示状态栏外观是否基于以后视图控制器的首选款式。

状态栏字体色彩

View controller-based status bar appearance设置为 YES 时, NO 状态对应设置有效; 反之亦然.

办法一: preferredStatusBarStyle

View controller-based status bar appearance 设置为 YES, 应用 - [UIViewController preferredStatusBarStyle] 批改状态栏字体色. 实用于 iOS7.0+, 举荐.

// MyViewController.m

- (UIStatusBarStyle)preferredStatusBarStyle {
      // 红色
      //return UIStatusBarStyleLightContent;
    
      // 彩色
      if (@available(iOS 13.0, *)) {return UIStatusBarStyleDarkContent;} else {return UIStatusBarStyleDefault; // 彩色, 默认值}
}

- (BOOL)prefersStatusBarHidden {
    return YES;  // 状态栏暗藏
    //return NO; // 状态栏显示, 默认值
}

留神:

若 ViewController 是 UINavigationController 的子控制器时, UINavigationController 的 preferredStatusBarStyle 办法笼罩了 ViewController preferredStatusBarStyle , 导致上述代码有效.

解决办法之一: 自定义导航栏, 重写 preferredStatusBarStyle 指定到以后顶层 viewController 的 preferredStatusBarStyle.

@implementation MyNavigationController
- (UIStatusBarStyle)preferredStatusBarStyle {
 UIViewController *topVC = self.topViewController;
 return [topVC preferredStatusBarStyle];
}
@end

办法二: setStatusBarStyle:

View controller-based status bar appearance 设置为 NO, 应用 [[UIApplication sharedApplication] setStatusBarStyle:] 扭转导航栏字体色彩. 不举荐这种形式, 官网 API 也举荐应用-[UIViewController preferredStatusBarStyle]:

官网 API:

// Setting the statusBarStyle does nothing if your application is using the default UIViewController-based status bar system.
@property(readwrite, nonatomic) UIStatusBarStyle statusBarStyle API_DEPRECATED("Use -[UIViewController preferredStatusBarStyle]", ios(2.0, 9.0)) API_UNAVAILABLE(tvos);
- (void)setStatusBarStyle:(UIStatusBarStyle)statusBarStyle animated:(BOOL)animated API_DEPRECATED("Use -[UIViewController preferredStatusBarStyle]", ios(2.0, 9.0)) API_UNAVAILABLE(tvos);

// Setting statusBarHidden does nothing if your application is using the default UIViewController-based status bar system.
@property(readwrite, nonatomic,getter=isStatusBarHidden) BOOL statusBarHidden API_DEPRECATED("Use -[UIViewController prefersStatusBarHidden]", ios(2.0, 9.0)) API_UNAVAILABLE(tvos);
- (void)setStatusBarHidden:(BOOL)hidden withAnimation:(UIStatusBarAnimation)animation API_DEPRECATED("Use -[UIViewController prefersStatusBarHidden]", ios(3.2, 9.0)) API_UNAVAILABLE(tvos);

形式 1

在 Xcode : General > Deployment Info > Status Bar Style 设置全局款式 light/dark, 这里的设置会被形式 2 的代码笼罩.

形式 2

在 AppDelegate 中能够设置整个 App 的状态栏全局款式:

// AppDelegate.m

// 设置状态栏字体色彩
[[UIApplication sharedApplication] setStatusBarStyle:[self _statusBarStyle]];
// 设置状态栏暗藏 (YES) 或显示(NO)
[[UIApplication sharedApplication] setStatusBarHidden:NO];

- (UIStatusBarStyle)_statusBarStyle {
      // 设置字体彩色
    if (@available(iOS 13.0, *)) {return UIStatusBarStyleDarkContent; // iOS13+} else {return UIStatusBarStyleDefault;}
}

扭转指定页面状态栏的字体色彩须要独自设置:

- (void)viewWillAppear:(BOOL)animated {[super viewWillAppear:animated];
    [[UIApplication sharedApplication] setStatusBarStyle:[self _statusBarStyle] animated:NO];// 彩色
      //[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:NO];// 红色
}