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iOS小技能:设置状态栏背景颜色(图片)

ios 设置 图片 技能 颜色 背景 状态栏
2023-06-13 09:11:18 时间

引言

  1. 设置状态栏背景颜色的解决方案:

使用新的API 【statusBarManager】

  1. 通过安全区域高度判断是否IphoneX之后的机型:if ([UIApplication sharedApplication].delegate.window.safeAreaInsets.bottom > 0)

I 状态栏背景颜色的适配方案

  • 问题
 [Bugly]  Trapped uncaught exception 'NSInternalInconsistencyException', reason: 'App called -statusBar or -statusBarWindow on UIApplication: this code must be changed as there's no longer a status bar or status bar window. Use the statusBarManager object on the window scene instead.' 
  • 旧代码
    UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];

1.1 使用新的API 【statusBarManager】

  • 解决方案:使用keyWindow.windowScene.statusBarManager
if (@available(iOS 13.0, *)) {
       UIView *statusBar = [[UIView alloc]initWithFrame:[UIApplication sharedApplication].keyWindow.windowScene.statusBarManager.statusBarFrame] ;
        statusBar.backgroundColor = color;
        [[UIApplication sharedApplication].keyWindow addSubview:statusBar];
    } else {
        // Fallback on earlier versions
        UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
           if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
               statusBar.backgroundColor = color;
           }
    }


statusBarFrame

            CGRect rectStatus = [[UIApplication sharedApplication] statusBarFrame];
            //API_DEPRECATED("Use the statusBarManager property of the window scene instead.", ios(2.0, 13.0));
            

           if (@available(iOS 13.0, *)) {

               rectStatus = [UIApplication sharedApplication].keyWindow.windowScene.statusBarManager.statusBarFrame;
               
       }

1.2 适配特色场景:状态是有透明或者半透明的效果的场景

  • 补充:如果整个项目的状态栏(电池栏)都是有颜色的,并且都是不透明的,上面这个方法完全可以应付。但是如果有状态是有透明或者半透明的效果,上面这个方法还是不能胜任,越透明越明显;经过一番查找,终于发现问题:
  • 问题:

1、iOS 13之前,可以通过valueForKey 获取UIApplication的statusBar,因为UIApplication是单例,因此,在iOS 12,通过: [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"]拿到的statusBar永远是同一个对象。2、iOS 13之后,因为苹果不允许使用KVC的valueForKey访问私有属性。通过上面的代码获取statusBar时,发现每次每次获取都调用 alloc:init的方法,重新生成一个statusBar;然后添加到UIApplication的keyWindow上,再设置背景颜色。因此这个方法多次调用就会创建多份statusBar,造成内存开销不说,想设置状态栏为为透明,根本没效果。

解决办法:既然定位到问题所在,办法就是保证iOS 13 之后,每次也都能拿到有去只有一个对象。方法有很多,我的方法代码如下:使用 static 配合 gcd

HSSingletonM(QCTStatusBarTool);

+ (void)setStatusBarBackgroundColor4ios13:(UIColor *)color {
    
    static UIView *statusBar = nil;
    static dispatch_once_t onceToken;
    if (@available(iOS 13.0, *)) {  //iOS 13不允许使用valueForKey、setValue: forKey获取和设置私有属性;
        dispatch_once(&onceToken, ^{
            statusBar = [[UIView alloc] initWithFrame:[UIApplication sharedApplication].statusBarFrame];
            [[UIApplication sharedApplication].keyWindow addSubview:statusBar];
        });
                
     } else {
         statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
    }
    if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
        statusBar.backgroundColor = color;
    }
}


II 通过安全区域高度判断是否IphoneX之后的机型

#define isIphoneX [QCT_Common isiPhoneX]

+ (BOOL)isiPhoneX {
    

        if (@available(iOS 11.0, *)) {
            if ([UIApplication sharedApplication].delegate.window.safeAreaInsets.bottom > 0) {//iphoneX横屏
                 return  YES;
                
            } else {
                return  NO;
                
            }
            
        } else {
            
            return NO;
        }
    
    

}



///*状态栏和导航栏总高度*/
#define kStatusBarHeight (CGFloat)(isIphoneX?(88.0):(64.0))
/*iPhoneX的状态栏高度差值*/
#define kPtatusBarHeight (CGFloat)(isIphoneX?(24.0):(0))
/*底部安全区域远离高度*/
#define kDtatusBarHeight (CGFloat)(isIphoneX?(34.0):(0))


2.1 应用场景1:自定义导航栏内容

导航栏显示公告和标题

    navView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, kWidth, kStatusBarHeight)];

2.2 应用场景2:设置状态栏背景图片


/**
 用于设置状态栏的背景图片
 */
@property (weak, nonatomic) UIButton *imgLable;

- (UIButton *)imgLable{
    if (nil == _imgLable) {
        UIButton *tmpView = [[UIButton alloc]init];
        _imgLable = tmpView;
        
        tmpView.userInteractionEnabled = NO;
        [tmpView setBackgroundImage:[UIImage imageNamed:@"img_daiban_topbg_top"] forState:UIControlStateNormal];
                

    
        [self addSubview:_imgLable];
        __weak __typeof__(self) weakSelf = self;
        
        [_imgLable mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.right.equalTo(weakSelf).offset(0);
            
            make.top.equalTo(weakSelf).offset(0);
            make.height.mas_equalTo(kStatusBarHeight);
//            make.top.equalTo.offset(kAdjustRatio(44));
        }];


    }
    return _imgLable;
}



推荐使用自动布局,和使用API获取高度


#define kstatusBarH [[UIApplication sharedApplication] statusBarFrame].size.height


#define knavHeight  self.navigationController.navigationBar.frame.size.height


//获取状态栏的高度
CGFloat statusHeight = [[UIApplication sharedApplication] statusBarFrame].size.height;
NSLog(@"状态栏高度:%f",statusHeight);

//获取导航栏的高度
CGFloat navHeight = self.navigationController.navigationBar.frame.size.height;
NSLog(@"导航栏高度:%f",navHeight);

//获取tabBar的高度
//1.在tabBarController中使用(你的继承自UITabBarController的VC)
CGFloat tabBarHeight = self.tabBar.frame.size.height;
NSLog(@"tabBar高度:%f",tabBarHeight);
//2.在非tabBarController中使用
UITabBarController *tabBarVC = [[UITabBarController alloc] init];//(这儿取你当前tabBarVC的实例)
CGFloat tabBarHeight = tabBarVC.tabBar.frame.size.height;
NSLog(@"tabBar高度:%f",tabBarHeight);

see also

  • iOS13适配暗黑模式方案:1、设置app不支持Dark Mode 2、制定深色模式开发规范 https://blog.csdn.net/z929118967/article/details/104293041