如何解决安全区域的根视图控制器偏移量问题
出现根视图控制器时,该视图似乎与安全区域冲突
但是当我更改选项卡并再次回到该选项卡时,似乎一切正常
编辑:
class Switcher {
static func updateRootVC(){
let status = UserDefaults.standard.object(forKey: "Accesstoken")
let userID = UserDefaults.standard.object(forKey: "UserId")
let userName = UserDefaults.standard.object(forKey: "UserName")
let userImage = UserDefaults.standard.object(forKey: "UserImage")
if let currentUser = userID {
requestManager.instance.userID = currentUser as! Int
}
if let currentStatus = status {
requestManager.instance.getToken = currentStatus as? String
}
if let Name = userName {
Api.Params.inputUserName = (Name as? String)!
}
if let Image = userImage {
Api.Params.inputUserImage = (Image as? String)!
}
var rootVC : UIViewController?
if(status != nil){
rootVC = UIStoryboard(name: "Tabbar",bundle: Bundle.main).instantiateViewController(withIdentifier: "Tabbar") as! UITabBarController
} else {
rootVC = UIStoryboard(name: "Main",bundle: Bundle.main).instantiateViewController(withIdentifier: "welcome") as! UINavigationController
}
rootVC!.view.insetsLayoutMarginsFromSafeArea = true
let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController = rootVC
appDelegate.window?.makeKeyAndVisible()
}}
搜索项约束
TabViewController设置代码
func setupTabbar(){
if Api.Params.isGuest == true {
let vc1 = storyboardTabbar.instantiateViewController(withIdentifier: "home") as! UINavigationController
let vc2 = storyboardTabbar.instantiateViewController(withIdentifier: "favorite") as! GuestVC
let vc3 = storyboardTabbar.instantiateViewController(withIdentifier: "scanner") as! ScannerVC
let vc4 = storyboardTabbar.instantiateViewController(withIdentifier: "history") as! GuestVC
let vc5 = storyboardTabbar.instantiateViewController(withIdentifier: "settings") as! GuestVC
self.viewControllers = [vc1,vc2,vc3,vc4,vc5]
self.selectedViewController = vc1
} else if Api.Params.isLanguageChange == true{
Api.Params.isLanguageChange = !Api.Params.isLanguageChange
let vc1 = storyboardTabbar.instantiateViewController(withIdentifier: "home") as! UINavigationController
let vc2 = storyboardTabbar.instantiateViewController(withIdentifier: "fav") as! UINavigationController
let vc3 = storyboardTabbar.instantiateViewController(withIdentifier: "scanner") as! ScannerVC
let vc4 = storyboardTabbar.instantiateViewController(withIdentifier: "his") as! UINavigationController
let vc5 = storyboardTabbar.instantiateViewController(withIdentifier: "set") as! UINavigationController
self.viewControllers = [vc1,vc5]
self.selectedViewController = vc5
} else {
let vc1 = storyboardTabbar.instantiateViewController(withIdentifier: "home") as! UINavigationController
let vc2 = storyboardTabbar.instantiateViewController(withIdentifier: "fav") as! UINavigationController
let vc3 = storyboardTabbar.instantiateViewController(withIdentifier: "scanner") as! ScannerVC
let vc4 = storyboardTabbar.instantiateViewController(withIdentifier: "his") as! UINavigationController
let vc5 = storyboardTabbar.instantiateViewController(withIdentifier: "set") as! UINavigationController
self.viewControllers = [vc1,vc5]
self.selectedViewController = vc1
} }
解决方法
尝试使用insetsLayoutMarginsFromSafeArea属性从safeArea指定视图插图布局:
Text: 512.56,BigDecimal.toPlainString(): 512.56,double: 512,560000
,
设置约束时,请使用safeAreaLayoutGuide
,您可以在Switcher类中尝试此操作,希望对您有帮助
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let navigationController: UINavigationController?
let storyboard: UIStoryboard?;
if status != nil {
storyboard = UIStoryboard(name: "Tabs",bundle: nil)
// HomeTabBarController is a subclass of UITabBarController
let vc = storyboard?.instantiateViewController(withIdentifier: "HomeTabBarController") as! HomeTabBarController
navigationController = UINavigationController(rootViewController: vc)
} else {
storyboard = UIStoryboard(name: "Main",bundle: nil)
// MainViewController is a subclass of UIViewController
let vc = storyboard?.instantiateViewController(withIdentifier: "MainViewController") as! MainViewController
navigationController = UINavigationController(rootViewController: vc)
}
// This hides the navigationBar
navigationController?.navigationBar.isHidden = true
appDelegate.window?.rootViewController = navigationController
appDelegate.window?.makeKeyAndVisible()
,
这么多天后,终于发现对safeArea的最大限制导致了问题,将其更改为Superview可以解决问题
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