C_calary的博客

popViewController

1.判断两个View是否相同if ([self.holdView.superview isEqual:self.view]) { //判断holdView是否是view的子视图 }

在做项目时有一个需求就是pop掉某些个界面，回到指定界面，本来很容易实现的一个需求，但我遇到的问题就是有个界面pop不掉

//[2]代表你想pop的对象的层级，rootVC为0 let idVC = self.navigationController?.viewControllers[2] as! IdentityViewController _ = self.navigationController?.popToViewController(idVC, animated: true)另外一种不确定层级的方法f

创建 UIViewController+HUD.swiftimport Foundationimport MBProgressHUD// keyWindowlet KeyWindow : UIWindow = UIApplication.shared.keyWindow!private var HUDKey = "HUDKey"extension UIViewController{

获取当前View代码如下- (UIView *)currentView{ UIViewController *controller = [[[UIApplication sharedApplication] keyWindow] rootViewController]; if ([controller isKindOfClass:[UITabBarController class]])

override func viewDidLoad() { super.viewDidLoad()//设置这两句后就不会自动下移了 self.navigationController!.navigationBar.isTranslucent = true; self.automaticallyAdjustsScrollViewInsets = false;