导航栏
[[UIBarButtonItemappearanceWhenContainedInInstancesOfClasses:@[[UINavigationBarclass]]] setBackButtonTitlePositionAdjustment:UIOffsetMake(1000,-60) forBarMetrics:UIBarMetricsDefault];
[[UIBarButtonItemappearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColorclearColor]} forState:UIControlStateNormal];
[[UIBarButtonItemappearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColorclearColor]} forState:UIControlStateSelected];
[[UIBarButtonItemappearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColorclearColor]} forState:UIControlStateHighlighted];
不然会导致 UIButtonBarStackView 布局错误
UITableView
Section Header Footer 默认是 白色的
状态栏高度
44的高度
automaticallyAdjustsScrollViewInsets 弃用
