【发布时间】:2019-11-30 16:57:55
【问题描述】:
我有一个 UIViewController,它根据屏幕上的所需选项实例化一些 UITableViewCell。这些选项之一是“说明”,我创建了一个 .XIB 文件以在屏幕上显示说明。但是,在这个屏幕上,我有一个按钮来显示更多指令(在另一个屏幕上)。因此,我创建了另一个带有说明的 .XIB 文件,我需要从第一个说明屏幕转到那里。我该怎么做?
这是我的代码:
import UIKit
class FirstInstructionsCell: UITableViewCell {
@IBOutlet weak var showSecondInstructions: UIButton!
var secondInstructionsView: SecondInstructions!
static let FIRST_INSTRUCTIONS_CELL_IDENTIFIER = "FirstInstructionsCell"
@IBAction func showSecondInstructionsTapped(_ sender: UIButton) {
print("Here I need to go to SecondInstructions screen")
}
}
修改后,我的 UIViewController:
import UIKit
class FirstInstructionsViewController: UIViewController, FirstInstructionsCellDelegate {
func goSecondScreen() {
presentViewController(SecondInstructions, animated: true, completion: nil)
// Here I have an error: Cannot convert value of type 'SecondInstructions.Type' to expected argument type 'UIViewController'
// 'SecondInstructions' is a UITableViewCell
}
@IBOutlet weak var confirmButton: UIButton!
@IBOutlet weak var tableView: UITableView!
var withdrawalCode: Int!
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.register(UINib(nibName: FirstInstructionsCell.FIRST_INSTRUCTIONS_CELL_IDENTIFIER, bundle: nil), forCellReuseIdentifier: FirstInstructionsCell.FIRST_INSTRUCTIONS_CELL_IDENTIFIER)
self.tableView.rowHeight = UITableView.automaticDimension
self.tableView.estimatedRowHeight = 470.0
}
//MARK: - Actions
@IBAction func onConfirmClicked(_ sender: UIButton) {
self.navigationController?.popViewController(animated: true)
}
}
// MARK: - UITableViewDelegate
extension FirstInstructionsViewController: UITableViewDelegate {
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 13.0
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 142.0
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
return PayPaxxHeaderView.loadFromNib(CGRect(x: 0, y: 0, width: self.view.bounds.width, height: 142.0)) as! PayPaxxHeaderView
}
}
// MARK: - UITableViewDataSource
extension FirstInstructionsViewController: UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: FirstInstructionsCell.FIRST_INSTRUCTIONS_CELL_IDENTIFIER, for: indexPath) as! FirstInstructionsCell
cell.fillCell(self.withdrawalCode)
cell.delegate = self
return cell
}
}
【问题讨论】:
标签: swift uitableview uiviewcontroller xcode10