之前用代码：
let toAddContactItemList = getToAddPersonItemList() let selectPersonVC = SelectPersonViewController(curContactItem: self.curContactItem, inputPersonItemList: toAddContactItemList) self.showViewController(selectPersonVC, sender: selectPersonVC) |
时，现在在被调用的VC：SelectPersonViewController中，想要获得sender的：
当前的VC：ConversationManageViewController
搜：
swift get showViewController sender
swift get view controller sender
swift get viewcontroller sender
swift get viewcontroller caller
How to access a variable from another view controller in Swift – Quora
uiwindow – ios swift method to navigate through viewcontroller programatically – Stack Overflow
swift viewcontroller sender
swift showViewController sender
swift view controller sender
最后搞定了，用的是如何代码：
func getCallerViewController(curVC:UIViewController) -> UIViewController? { // let parentViewController = self.parentViewController // print("parentViewController=\(parentViewController)") // let presentationController = self.presentationController // print("presentationController=\(presentationController)") // let presentedViewController = self.presentedViewController // print("presentedViewController=\(presentedViewController)") // let presentingViewController = self.presentingViewController // print("presentingViewController=\(presentingViewController)") // if let naviViewControllers = self.navigationController?.viewControllers{ // for (idx,eachVC) in naviViewControllers.enumerate() { // print("[\(idx)] \(eachVC)") // } // } /* parentViewController=Optional(<UINavigationController: 0x7fce92844e00>) presentationController=Optional(<_UIFullscreenPresentationController: 0x7fce914bd830>) presentedViewController=nil presentingViewController=Optional(<JianDao.LoginViewController: 0x7fce914baac0>) [0] <JianDao.MainViewController: 0x7f80db037600> [1] <JianDao.MessageTableViewController: 0x7f80dc23b000> [2] <JianDao.ConversationManageViewController: 0x7f80dc230080> [3] <JianDao.SelectPersonViewController: 0x7f80dc0bc0c0> */ print("curVC=\(curVC)") //<JianDao.SelectPersonViewController: 0x7facfd9906c0> var calerVc:UIViewController? = nil if let naviViewControllers = curVC.navigationController?.viewControllers{ let vcCount = naviViewControllers.count //3 let maxVcIdx = vcCount – 1 //3 let callerVcIdx = maxVcIdx – 1 //2 if callerVcIdx >= 0 { calerVc = naviViewControllers[callerVcIdx] //Optional(<JianDao.ConversationManageViewController: 0x7facfd93a870>) } } return calerVc } |
其中：
此处假定的前提是：
所有的ViewController都是通过NavigationController调用去压栈和出栈的
显示vc是通过self.showViewController的方式去调用新的vc去显示的。
－》然后navi controller的stack中，才能找到调用者vc。
转载请注明：在路上 » ［已解决］swift获得ViewController被showViewController的调用者sender