我在将数据从 TableView 中的选定行传递到另一个 ViewController 时遇到问题。
class SectionsTableViewController: UITableViewController {
var sections: [Sections] = SectionsData().getSectionsFromData()
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return sections.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return sections[section].items.count
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return sections[section].headings
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "sectionCell", for: indexPath)
// Configure the cell...
cell.textLabel?.text = sections[indexPath.section].items[indexPath.row]
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?)
{
if (segue.identifier == "sectionCell")
{
let upcoming: Sjekkliste = segue.destination as! Sjekkliste
let indexPath = self.tableView.indexPathForSelectedRow!
let titleString = Sections(title: "", objects: [""]) as? String
upcoming.titleString = titleString
self.tableView.deselectRow(at: indexPath, animated: true)
}
这是我的问题所在:let titleString = Sections(title: "", objects: [""]) as?字符串
如果标题和对象分开传递会更好。
这是我的数据设置:
class SectionsData {
var myArray: [AnyObject] = []
func getSectionsFromData() -> [Sections] {
var sectionsArray = [Sections]()
let Generell = Sections(title: "Animals", objects:
["Cat", "Dog", "Lion", "Tiger"])
sectionsArray.append(Generell)
return sectionsArray
这一行建议您将 String 子类化为 Sections。你为什么要继承字符串?如果 Sections 不是字符串的子类,则此行将失败。
let titleString = Sections(title: "", objects: [""]) as? String
我假设你想要类似的东西:
let selectedSection:Sections = Sections(title: "", objects: [""])
upcoming.titleString = selectedSection.title
上面建议 Sections 对象上的“title”属性是您希望设置为下一个 View Controller 的“titleString”属性的内容。
与原始问题无关,您应该将“Generell”小写。最佳实践建议只有类名应该以大写字母开头。我还建议实现 didSelectRow 方法来选择您的数据。结果应该类似于:
var selectedSection:Sections? //goes at top
public func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
self.selectedSection = self.sections[indexPath.section]
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?){
if (segue.identifier == "sectionCell"){
let upcoming: Sjekkliste = segue.destination as! Sjekkliste
if let section = self.selectedSection{
upcoming.titleString = section.title
}
}
}
关于ios - TableView 数组 segue 不会传递数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41190455/
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