Swift UITableView didSelectRowAtIndexPath没有被调用 [英] Swift UITableView didSelectRowAtIndexPath not getting called

问题描述

IOS开发新手，在处理表格上的单元格选择时遇到问题。每当我选择时，该方法都不会在下面调用 - 任何想法为什么？

New to IOS development and am having trouble with handling cell selection on a table. Whenever I select, the method is not getting called below - any idea why?

我的项目结构是：
查看控制器 - >查看 - >表视图

My project structure is: View Controller -> View -> Table View

以下代码演示了方法调用。其他人被称为没有问题！我知道触摸工作正在下拉成功刷新，点击一个单元格确实突出显示。

The below code demonstrates the method calls. The others get called no problem! I know touch is working as pull down successfully refreshes and on clicking a cell it does become highlighted.

import UIKit

class ViewController: UIViewController, UITableViewDelegate
{

   let blah = ["blah1"]

   //How many sections are in the table?
   func numberOfSectionsInTableView(tableView: UITableView) -> Int {
      return 1
   }

   //How many rows? (returns and int)
   func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
      return blah.count
   }

  //table contents for each cell?
  //Each time this is called it'll return the next row and thus build a table...
  func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
      print("Populating each cell of table view!\n")
      tableView.rowHeight = 80.0
      var cell = UITableViewCell()

      var(a) = blah[indexPath.row]
      var image : UIImage = UIImage(named: a)!
      cell.imageView.image = image

      return cell
  }



  //Code Cell Selected
  func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){
      println("You selected cell #\(indexPath.row)!")

  }


  func tableView(tableView: UITableViewDelegate, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
     print("wananananaanan" )
     println("You deselected cell #\(indexPath.row)!")

  }




  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.
  }
}

推荐答案

你必须在你的 ViewController @IBOutlet 设置为 tableView >并设置为委托和 dataSource ，您可以看到数据响应<$ c $中的变化c> tableView 。

You have to set an @IBOutlet to the tableView in you ViewController and set as it's delegate and dataSource to you can see the data an respond to changes in the tableView.

这样的事情：

override func viewDidLoad() {
    super.viewDidLoad()

    self.tableView.delegate = self
    self.tableView.dataSource = self
}

并实现 UITableViewDataSource 协议。

或者你也可以在Interface Builder中设置 ViewController 作为它的委托和 dataSource （我认为更容易）并避免在上面的代码中手动设置。由你决定。

Or you can too in the Interface Builder set the ViewController as it's delegate and dataSource (more easy to do I think) and avoid to set manually in code like above. Is up to you.

我希望这对你有帮助。

这篇关于Swift UITableView didSelectRowAtIndexPath没有被调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！