如何检测在swift中触摸或单击的tableView单元格 [英] How to detect tableView cell touched or clicked in swift

问题描述

我正在尝试获取 TableView 中所选项目的 index ，然后启动一些活动。不幸的是，我发现大多数解决方案都是在objective-c中或者不起作用。

I'm trying to get index of selected item in TableView and start some activity after that. Unfortunately most of solutions that I found are in objective-c or do not work.

方法 func tableView（tableView：UITableView，didSelectRowAtIndexPath indexPath：NSIndexPath ）不要打印单元格标签..

Method func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) don't print the cell label..

有人可以帮我吗？

import UIKit
import ResearchKit

class TaskListViewController: UIViewController, UITableViewDataSource {

    let tasks=[("Short walk"),
        ("Audiometry"),
        ("Finger tapping"),
        ("Reaction time"),
        ("Spatial span memory")
    ]


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

    //return int how many rows
    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return tasks.count
    }

    //what are the contents

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        var cell = UITableViewCell()

        var (testName) = tasks[indexPath.row]
        cell.textLabel?.text=testName
        return cell
    }

    // give each table section a name

    func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {

        return "Tasks"

    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

        let indexPath = tableView.indexPathForSelectedRow();

        let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!

        println(currentCell.textLabel!.text)
    }


    override func viewDidLoad() {
        super.viewDidLoad()

    }  
}

经过几次尝试后，我将代码更改为与教程不同的代码我发现。它也不起作用。现在我认为这是iOS模拟器的问题...

After a few tries I changed the code to a different one from tutorial that I found. And it doesn't work too. Now I'm thinking this is the issue with iOS simulator...

import UIKit
import ResearchKit

class TaskListViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet
    var tableView: UITableView?
    var items: [String] = ["We", "Heart", "Swift"]

    override func viewDidLoad() {
        super.viewDidLoad()

        self.tableView!.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
    }


    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.items.count;
    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        var cell:UITableViewCell = self.tableView!.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell

        cell.textLabel?.text = self.items[indexPath.row]

        return cell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        println("You selected cell #\(items[indexPath.row])!")
    }

}

推荐答案

如果你想要来自单元格的值，那么你不必重新创建单元格在 didSelectRowAtIndexPath

If you want the value from cell then you don't have to recreate cell in the didSelectRowAtIndexPath

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    println(tasks[indexPath.row])
}

任务如下：

let tasks=["Short walk",
    "Audiometry",
    "Finger tapping",
    "Reaction time",
    "Spatial span memory"
]

你还要检查 cellForRowAtIndexPath 你要哈哈设置标识符。

also you have to check the cellForRowAtIndexPath you have to set identifier.

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("CellIdentifier", forIndexPath: indexPath) as UITableViewCell
    var (testName) = tasks[indexPath.row]
    cell.textLabel?.text=testName
    return cell
}

希望有所帮助。

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