Question

ios9弃用了哪些常用类

Answer 1

ios9开始 statusBarHidden 和 statusBarStyle 方法被弃用。苹果官方文档建议：

@property(readwrite, nonatomic) UIStatusBarStyle statusBarStyle NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController preferredStatusBarStyle]") __TVOS_PROHIBITED;
@property(readwrite, nonatomic,getter=isStatusBarHidden) BOOL statusBarHidden NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController prefersStatusBarHidden]") __TVOS_PROHIBITED;

说的很明白了，只需要在需要设置的UIViewController里设置

-(UIStatusBarStyle)preferredStatusBarStyle
{
return UIStatusBarStyleLightContent;
}
- (BOOL)prefersStatusBarHidden
{
return isShowStatusBar;
}

如果想动态的控制UIStatusBar显示和隐藏，只需要下面的代码就能实现

isShowStatusBar=YES;//
[self setNeedsStatusBarAppearanceUpdate];