我的第一次时间使用swift tableViews，我只是深入了解使用它们的基础知识。
我目前在我的主故事板中有一个表，它有一个原型单元格。该原型单元具有“Disclosure Indicator”附件（箭头，链接到不同的View Controller。
每当我点击应用程序主页（tableView）中的某些内容时，成功会将我转移到另一个View Controller。
然而，我苦苦挣扎能够将表格中的信息转换为该屏幕。到目前为止，这是我的代码：
（基本假设低于代码）
ViewController.swift
import UIKit
class ViewController: UIViewController, UITableViewDataSource {
var alabama = [
("University of Alabama", "29843")
]
var arizona = [
]
var arkansas = [
]
var california = [
]
var colorado = [
]
var connecticut = [
]
var districtofcolumbia = [
]
var florida = [
]
var georgia = [
]
var hawaii = [
]
var illinois = [
]
var indiana = [
]
var iowa = [
]
var kansas = [
]
var kentucky = [
]
var louisiana = [
]
var maine = [
]
var maryland = [
]
var massachusetts = [
]
var michigan = [
]
var minnesota = [
]
var mississippi = [
]
var missouri = [
]
var nebraska = [
]
var nevada = [
]
var newhampshire = [
]
var newjersey = [
]
var newmexico = [
]
var newyork = [
]
var northcarolina = [
]
var ohio = [
]
var oklahoma = [
]
var oregon = [
]
var pennsylvania = [
]
var puertorico = [
]
var rhodeisland = [
]
var southcarolina = [
]
var tennessee = [
]
var texas = [
]
var utah = [
]
var vermont = [
]
var virginia = [
]
var washington = [
]
var westvirginia = [
]
var wisconsin = [
("University of Wisconsin", "12345")
]
//How many sections are in your table?
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 45
}
//How many rows are in your table?
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0 {
return alabama.count
}
if section == 1 {
return arizona.count
}
if section == 2 {
return arkansas.count
}
if section == 3 {
return california.count
}
if section == 4 {
return colorado.count
}
if section == 5 {
return connecticut.count
}
if section == 6 {
return districtofcolumbia.count
}
if section == 7 {
return florida.count
}
if section == 8 {
return georgia.count
}
if section == 9 {
return hawaii.count
}
if section == 10 {
return illinois.count
}
if section == 11 {
return indiana.count
}
if section == 12 {
return iowa.count
}
if section == 13 {
return kansas.count
}
if section == 14 {
return kentucky.count
}
if section == 15 {
return louisiana.count
}
if section == 16 {
return maine.count
}
if section == 17 {
return maryland.count
}
if section == 18 {
return massachusetts.count
}
if section == 19 {
return michigan.count
}
if section == 20 {
return minnesota.count
}
if section == 21 {
return mississippi.count
}
if section == 22 {
return missouri.count
}
if section == 23 {
return nebraska.count
}
if section == 24 {
return nevada.count
}
if section == 25 {
return newhampshire.count
}
if section == 26 {
return newjersey.count
}
if section == 27 {
return newmexico.count
}
if section == 28 {
return newyork.count
}
if section == 29 {
return northcarolina.count
}
if section == 30 {
return ohio.count
}
if section == 31 {
return oklahoma.count
}
if section == 32 {
return oregon.count
}
if section == 33 {
return pennsylvania.count
}
if section == 34 {
return puertorico.count
}
if section == 35 {
return rhodeisland.count
}
if section == 36 {
return southcarolina.count
}
if section == 37 {
return tennessee.count
}
if section == 38 {
return texas.count
}
if section == 39 {
return utah.count
}
if section == 40 {
return vermont.count
}
if section == 41 {
return virginia.count
}
if section == 42 {
return washington.count
}
if section == 43 {
return westvirginia.count
}
if section == 44 {
return wisconsin.count
}
else
{
return 0
}
}
//What are the contents of each cell?
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
//var cell = UITableViewCell()
let cell = tableView.dequeueReusableCellWithIdentifier("College Cell", forIndexPath: indexPath) as UITableViewCell
if indexPath.section == 0{
var (collegeName, population) = alabama[indexPath.row]
cell.textLabel?.text = "\(collegeName)"
}
else
{
var (collegeName, population) = wisconsin[indexPath.row]
cell.textLabel?.text = "\(collegeName)"
}
return cell
}
//Give each table section a title
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section == 0 {
return "alabama"
}
if section == 1 {
return "arizona"
}
if section == 2 {
return "arkansas"
}
if section == 3 {
return "california"
}
if section == 4 {
return "colorado"
}
if section == 5 {
return "connecticut"
}
if section == 6 {
return "district of columbia"
}
if section == 7 {
return "florida"
}
if section == 8 {
return "georgia"
}
if section == 9 {
return "hawaii"
}
if section == 10 {
return "illinois"
}
if section == 11 {
return "indiana"
}
if section == 12 {
return "iowa"
}
if section == 13 {
return "kansas"
}
if section == 14 {
return "kentucky"
}
if section == 15 {
return "louisiana"
}
if section == 16 {
return "maine"
}
if section == 17 {
return "maryland"
}
if section == 18 {
return "massachusetts"
}
if section == 19 {
return "michigan"
}
if section == 20 {
return "minnesota"
}
if section == 21 {
return "mississippi"
}
if section == 22 {
return "missouri"
}
if section == 23 {
return "nebraska"
}
if section == 24 {
return "nevada"
}
if section == 25 {
return "new hampshire"
}
if section == 26 {
return "new jersey"
}
if section == 27 {
return "new mexico"
}
if section == 28 {
return "new york"
}
if section == 29 {
return "north carolina"
}
if section == 30 {
return "ohio"
}
if section == 31 {
return "oklahoma"
}
if section == 32 {
return "oregon"
}
if section == 33 {
return "pennsylvania"
}
if section == 34 {
return "puerto rico"
}
if section == 35 {
return "rhode island"
}
if section == 36 {
return "south carolina"
}
if section == 37 {
return "tennessee"
}
if section == 38 {
return "texas"
}
if section == 39 {
return "utah"
}
if section == 40 {
return "vermont"
}
if section == 41 {
return "virginia"
}
if section == 42 {
return "washington"
}
if section == 43 {
return "west virginia"
}
if section == 44 {
return "wisconsin"
}
else
{
return ""
}
}
override func viewDidLoad() {
super.viewDidLoad()
}
}
假设我已经填写了州内每所大学的每个州名的所有初始变量，以及第二个字符串是每所大学的学生人口（如第一个例如，（“阿拉巴马大学”，“29843”）。
此外，假设“tableView”函数适用于所有变量（而不仅仅是“alabama”和“wisconsin”，就像现在一样）。
我想要发生什么是当我点击一所大学（例如“阿拉巴马大学”）时，当它重定向到新的视图控制器时，我希望它显示人口信息作为字符串（以及将来，我列出的每个学院的任何其他信息，如城市位置等）。
我相信我需要使用一个新类并将其连接到我已经完成的View Controller。从这里开始，我对如何传递数据感到迷茫。
非常感谢！
答案 0 :(得分：2)
正如您所说，一旦您使用segue将单元格连接到下一个视图控制器，您可以使用方法prepareForSegue:sender:，该函数通知视图控制器即将执行segue，它可以用于在segue连接的UIViewControllers之间传递数据，如下所示：
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
// Here you use the segue.destinationViewController to access to the next view controller
let nextViewController = segue.destinationViewController as! NextViewControllerName
// here you can access to the properties of the class instantiated and set it data
// nextViewController.propertyName = value
}
在上面的示例中，我假设您只有一个segue，如果您有多个segault，则需要使用属性检查器中的Interface Builder为每个要识别的segue设置标识符您已在Interface Builder中选择并修改上述代码，如下所示：
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
if segue.identifier == "nameYouSetForYourSegue" {
// Here you use the segue.destinationViewController to access to the next view controller
let nextViewController = segue.destinationViewController as! NextViewControllerName
// here you can access to the properties of the class instantiated and set it data
// nextViewController.propertyName = value
}
}
我希望这对你有所帮助。
答案 1 :(得分：0)
您需要做什么：
override func prepareForSegue(segue: UIStoryboardSegue, sender: UITableViewCell) {
if segue.identifier == "yourStoryboardSegue" { //you'll set this up by control dragging to the next view controller
if let destinationVC = segue.destinationViewController as? YourViewControllerClass {
destinationVC.schoolName = sender.textLabel?.text
destinationVC.schoolPopulation = sender.detailTextLabel?.text
}
}
}
首先，您将准备segue，并将发件人设置为已点按的UITableViewCell。通过从原型单元格拖动到下一个视图控制器，您将获得一个segue。执行此操作时，请确保在属性检查器中设置标识符。
然后我们将尝试创建一个视图控制器的新实例，此控件正在搜索。如果我们可以创建一个，通过检查destinationViewController是否是您期望的类型，那么我们可以设置目的地的属性，例如名称和人口，这些属性必须在目的地中设置控制器，如var schoolName = String()和var schoolPopulation = Int()或您选择的任何类型的属性。
编辑：作为一个注释，如果我没有告诉你你的日期结构和设置很糟糕，我觉得我会错过这里的教学时刻，你应该考虑将它们移到模型课程中。