iOS15踩坑点

NavigationBar

原方式self.navigationBar.barTintColor = [UIColor blackColor];
iOS15之后：

if (@available(iOS 15.0, *)) {
        UINavigationBarAppearance *appearance = [UINavigationBarAppearance new];
        [appearance configureWithOpaqueBackground];
        appearance.backgroundColor = [UIColor blackColor];
        nav.navigationBar.standardAppearance = appearance;
        nav.navigationBar.scrollEdgeAppearance = nav.navigationBar.standardAppearance;
}

tabBar

原方式self.tabBar.barTintColor = [UIColor darkGrayColor];
iOS15之后：

if (@available(iOS 15.0, *)) {
        UITabBarAppearance *appearance = [UITabBarAppearance new];
        [appearance configureWithOpaqueBackground];
        appearance.backgroundColor = [UIColor darkGrayColor];
        self.tabBar.standardAppearance = appearance;
        self.tabBar.scrollEdgeAppearance = appearance;
 }

UIToolbar

同tabBar

UITableView

新增了属性 sectionHeaderTopPadding，会给每一个section 的 header 增加一个默认高度。

iOS15之后：

//页面内
if (@available(iOS 15.0, *)) {
        self.tableView.sectionHeaderTopPadding = 0;
    }

//全局appdelegate
if (@available(iOS 15.0, *)) {
        [UITableView appearance].sectionHeaderTopPadding = 0;
    }