正如你在我的代码中看到的,一旦选择了一行但没有成功,我尝试了一些方法将 UIViewTableController 关闭回我的父 ViewController
我的 UITableViewController 中的 didselectRowAt 代码:
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
//self.storyboard?.instantiateInitialViewController()
//self.navigationController?.popViewController(animated: true)
print("before dismissing")
self.dismiss(animated: true, completion: {
print("dismissing")
self.delegate?.showWeatherInfo()
})
print("after dismissing")
let geoCoder = CLGeocoder()
geoCoder.geocodeAddressString(self.searchResults[indexPath.row], completionHandler: {(placemarks: [CLPlacemark]?, error: Error?) -> Void in
if let placemark = placemarks?[0] {
print(placemark)
}
})
/*
self.dismiss(animated: true, completion: {
self.delegate?.showWeatherInfo()
})
*/
}
同一类的协议(protocol):
protocol ShowWeather{
func showWeatherInfo()
}
我在 ViewController 中调用它:
@IBAction func searchButton(_ sender: UIButton) {
searchButtonUIChanges()
textFieldBg_view.backgroundColor = UIColor.clear
//create searchresult object and add it as a subview
searchResultController = SearchResultsController()
searchResultController.delegate = self
addChild(searchResultController)
searchResultController.view.backgroundColor = UIColor.clear
searchResultController.view.frame = CGRect(x: 0, y: 64+textFieldBg_view.frame.size.height - 25, width: self.view.frame.size.width, height: self.view.frame.size.height - 50)
view.addSubview(searchResultController.view)
searchResultController.didMove(toParent: self)
let screenHeight = -(UIScreen.main.bounds.height/2 + textFieldBg_view.frame.height/2)
textFieldBg_view.transform = CGAffineTransform(translationX: 0, y: screenHeight)
UIView.animate(withDuration: animateDuration, delay: delay, usingSpringWithDamping: springWithDamping, initialSpringVelocity: 0, options: .allowUserInteraction, animations: {
self.textFieldBg_view.transform = .identity
}, completion: nil)
searchTextField.becomeFirstResponder()
}
显然,在取消打印之前和之后可以工作,但完成中的取消打印则不起作用。我目前还没有任何信息传递回 UIViewController 的原因是,我什至还没有到达那里。
是的,在我的 ViewController 类 header 中,我有 TableViewController 类协议(protocol),但这无关紧要,因为 UITableViewController 甚至还没有正确地关闭。
最佳答案
当您关闭 vc 时,它已被取消初始化,因此您需要在关闭之前传递数据
print("before dismissing \(delegate)") // print delegate to see if nil
self.delegate?.showWeatherInfo()
self.dismiss(animated: true, completion: {
print("dismissing")
})
此外,如果 vc 被推送到导航中 dismiss
将不起作用,您需要使用
self.navigationController?.popViewController(animated: true)
关于swift - UITableViewController didSelectRowAt 未正确解除,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56284334/