在iOS13中，苹果使用UIStatusBarManager来获取StatusBar的状态和属性，之前的StatusBar高度获取被弃用，最新的获取方式如下：

float statusBarHeight = 0;
if (@available(iOS 13.0, *)) {
    UIStatusBarManager *statusBarManager = [UIApplication sharedApplication].windows.firstObject.windowScene.statusBarManager;
    statusBarHeight = statusBarManager.statusBarFrame.size.height;
}
else {
    statusBarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;
}