我想要得到用戶點擊的indexPath.row
,然後檢查我的數組,然後從那個indexPath.row
返回一個字符串,然後通過preparforSegue發送字符串....但它不起作用。我認爲該程序在didselectRowatIndexPath
之前運行preparForSegue ...我該怎麼做?如何在didSelectRowAtIndexPath之後運行prepareForSegue?
我的代碼:
import UIKit
import Parse
class CategoriaTableViewController: UITableViewController {
var queryArray: [PFObject] = [PFObject]()
var escolha = 5
override func viewDidLoad() {
super.viewDidLoad()
var query = PFQuery(className:"Categorias")
//querycomlocalidade
query.findObjectsInBackgroundWithBlock {
(objects: [AnyObject]?, error: NSError?) -> Void in
if error == nil {
println("Successfully retrieved \(objects!.count) Restaurantes.")
if let _objects = objects as? [PFObject] {
self.queryArray = _objects
self.tableView.reloadData()
}
} else {
println("Error: \(error!) \(error!.userInfo!)")
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return queryArray.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> CategoriaTableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("ceculaCategoria", forIndexPath: indexPath) as! CategoriaTableViewCell
let categoria = queryArray[indexPath.row] as! PFObject
//Insere texto
cell.tituloCecula.text = categoria.objectForKey("nome") as! String
//Insere imagens no tableview
if let categoriaImagem = categoria.objectForKey("imagem") as? PFFile {
categoriaImagem.getDataInBackgroundWithBlock { (imageData: NSData?, error: NSError?) -> Void in
if (error == nil) {
cell.imagemCecula.image = UIImage(data:imageData!) }
}
}
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
escolha = indexPath.row
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var detailScene = segue.destinationViewController as! ListaTableViewController
if let indexPath = self.tableView.indexPathForSelectedRow() {
let row = Int(indexPath.row)
let categoriaEscolhida = queryArray[escolha] as PFObject
//Insere texto
detailScene.categoria = categoriaEscolhida.objectForKey("nome") as! String
}
}
}
如果你忽略了什麼'escolha '並使用'queryArray [row]'? –
那樣我怎麼知道他選擇了哪一行? –
呃...我不知道如何,但似乎它的工作。這怎麼可能? :)行包含他點擊的行? –