正如您在下面的代码中看到的那样,我尝试了一些方法,以便在选择一行失败后将UIViewTableController返回到父ViewController中
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 ShowWeather{
func showWeatherInfo()
}
我在ViewController中调用它的位置:
@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,在消除指纹之前和之后都可以工作,但在补全中的消除工作不是这样的。我目前还没有任何信息被传递回UIViewController,是因为,嗯,我甚至还没有到达那里。
是的,在我的ViewController类标头中有TableViewController类协议,但这是不相关的,因为UITableViewController甚至还没有正确地忽略它。
发布于 2019-05-24 08:14:07
当您解除vc时,它已被解除初始化,因此您需要在解除之前传递数据。
print("before dismissing \(delegate)") // print delegate to see if nil
self.delegate?.showWeatherInfo()
self.dismiss(animated: true, completion: {
print("dismissing")
})
另外,如果将vc推入导航中,dismiss
将不起作用,您需要使用
self.navigationController?.popViewController(animated: true)
https://stackoverflow.com/questions/56284334
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