我有一个主从视图应用程序，其中MasterView的表单元格是Xib单元格。我还在DetailViewController中有两个TableViews并排放置，如下所示：
Master and Detail Views
现在我的问题是，当我单击Master的TableViewCell时，我无法填充DetailView的Table View。我在下面粘贴我的代码：
class MasterViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var devarlViewController: DetailViewController? = nil
var objects = [Any]()
var statesList = ["AL", "GA", "AK", "AR", "AZ", "CA", "CO", "CT", "CO"]
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.register(UINib(nibName: "TableViewCell", bundle: nil), forCellReuseIdentifier: "cell")
// Do any additional setup after loading the view, typically from a nib.
}
// MARK: - Table View
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return statesList.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel!.text = statesList[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
DetailViewController.sharedDetail.selectedState = (self.tableView(tableView, cellForRowAt: indexPath).textLabel?.text)!
DetailViewController.sharedDetail.selectedCity = ""
}
}
class DetailViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
static let sharedDetail = DetailViewController()
@IBOutlet weak var CitiesTable: UITableView!
@IBOutlet weak var PlacesTable: UITableView!
var selectedState: String = ""{
didSet{
CitiesTable.reloadData()
}
}
var selectedCity: String = ""
var citiesStates: [String:[String]] = [ "AL": ["Auburn", "Montgomery", "Birmingham"]
]
var placesCities: [String:[String]] = [ "Auburn": ["Dominos", "Pizzahut", "McDonalds"],
"Birmingham": ["iHop", "Coldstone", "WaffleHouse"]
]
var cities: [String] = []
var places: [String] = []
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if(tableView == CitiesTable)
{
if(selectedState != "")
{
cities = citiesStates[selectedState]!
return cities.count
}
}
else
{
if(selectedCity != "")
{
places = placesCities[selectedCity]!
return places.count
}
}
return 0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if(tableView == CitiesTable)
{
let cell = tableView.dequeueReusableCell(withIdentifier: "citiesCell", for: indexPath)
cell.textLabel?.text = cities[indexPath.row]
return cell
}
else
{
let cell = tableView.dequeueReusableCell(withIdentifier: "placesCell", for: indexPath)
cell.textLabel?.text = cities[indexPath.row]
return cell
}
}
}
最佳答案
我在如下所示的masterviewcontroller中添加了一个协议
protocol MasterSelectionDelegate: class {
func itemSelected(_ item: AnyObject)
}
然后，因为splitviewcontroller作为rootviewcontroller而坐。
在应用程序委托中或在创建Split View Controller期间。我在下面添加了
masterViewController.delegate = detailViewController
在主ViewController的didSelectRowAtIndexPath中，我将其称为：
`override func tableView(tableView: UITableView,
didSelectRowAtIndexPath indexPath: NSIndexPath) {
let selectedItem = self.arrString[indexPath.row]
self.delegate?.itemSelected(selectedItem)
}`
最后，您必须在详细视图控制器的委托中实现它
func itemSelected(_ item: AnyObject) { itemSelected = item as? Array<String> tableview.reloadData() }