所以我有一个包含多个值的存储键的字典。我有两个视图控制器,都包含一个表视图和自定义单元格。
我已将键放在一个数组中,并将它们指定为第一个视图控制器中单元格标签的文本。转换到下一个视图控制器时,我想传递按下的键的值。因此,例如,在第一个视图控制器中,如果您选择了包含字典中第一个键的行,则第一个键的所有值都将分配给以下视图控制器的单元格标签文本,依此类推。这是可能的,如果是这样的话,最好的方法是什么呢?
这是第一个视图控制器的代码:
import UIKit
var trainingDict = ["Ball Handling" : ["1 Ball Stationary Drills", "1 Ball Combo Moves", "2 Ball Stationary Drills", "2 Ball Combo Moves", "2 Ball Partner Drills", "Handle Hoop Drills"], "Shooting" : ["Form Shooting", "Spot Shooting", "Off The Dribble Shots", "Pull Up Jumpshots", "Catch & Shoots", "Free Throws", "Partner Shooting"], "Defense" : ["5 Star Drill", "Full Court Def. Slides", "1 v 1 Closeouts", "Gauntlet Drill", "Tennis Ball Reaction Drill", "Lane Slides"], "Advanced Drills" : ["D Man Series", "Iso Series", "Double Move Series", "Gauntlet Series", "John Wall Drill", "Floater Series"], "Vertimax Drills" : ["One Foot Jumps", "Box Jumps", "Resitance Slides", "Resistance Jumps", "Resistance Ball Handling", "Vertimax Sprints", "Slam Drill"], "Full Workouts" : ["Workout A", "Workout B", "Workout C", "Workout D", "Workuot E", "Workout F", "Workout G"], "BHB Products" : ["Handle Hoops", "Handle Cubes", "Strech Bands", "Advocare"]]
var gradient : CAGradientLayer!
var myIndex = 0
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
@IBOutlet weak var tableView: TableView!
var trainingCategories = [String]()
var arrayForKey = [String]()
var selectedKey = String()
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return trainingDict.count
}
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "bell" , for: indexPath) as! ViewControllerTableViewCell
cell.tag = indexPath.row
//cell details
cell.backgroundColor = UIColor.clear
//gradient details
gradient = CAGradientLayer()
gradient.frame = tableView.bounds
gradient.colors = [UIColor.black.cgColor, UIColor.darkGray.cgColor, UIColor.black.cgColor]
tableView.layer.insertSublayer(gradient, at: 0)
gradient.startPoint = CGPoint(x: 0.0, y: 0.0)
gradient.endPoint = CGPoint(x: 1.0, y: 1.0)
//details what the text label of cell displays
var trainingCategories = Array(trainingDict.keys)
trainingCategories.sort { return $0 < $1}
cell.textLabel?.text = trainingCategories[indexPath.row]
cell.textLabel?.textColor = UIColor.white
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
myIndex = indexPath.row
selectedKey = trainingCategories[indexPath.row]
performSegue(withIdentifier: "segue", sender: self)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue" {
if let secondTableView = segue.destination as? DrillsViewController {
//get array for selected key
arrayForKey = trainingDict[selectedKey]!
//pass to second table view
secondTableView.arrayForKey2 = arrayForKey
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
var trainingCategories = Array(trainingDict.keys)
trainingCategories.sort { return $0 < $1}
}
这是第一个控制器所代表的第二个视图控制器的代码:
import UIKit
import UIKit
class DrillsViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var arrayForKey2 = [String]()
@IBOutlet weak var tableView: DrillsTableView!
@IBOutlet weak var drillLabel: UILabel!
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return arrayForKey2.count
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell" , for: indexPath) as! DrillsTableViewCell
//clear background color needed in order to display gradient cell
cell.backgroundColor = UIColor.clear
//gradient configuration
gradient = CAGradientLayer()
gradient.frame = tableView.bounds
gradient.colors = [UIColor.black.cgColor, UIColor.darkGray.cgColor, UIColor.black.cgColor]
tableView.layer.insertSublayer(gradient, at: 0)
gradient.startPoint = CGPoint(x: 0.0, y: 0.0)
gradient.endPoint = CGPoint(x: 1.0, y: 1.0)
//attributes for watch/play button
cell.playButton.layer.shadowColor = UIColor.yellow.cgColor
cell.playButton.layer.shadowOffset = CGSize(width: 2, height: 2)
cell.playButton.layer.shadowOpacity = 0.7
cell.playButton.layer.shadowRadius = 1
//details for cell label display
cell.drillTitle.text = "\(arrayForKey2[indexPath.row])"
return cell
}
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
}
答案 0 :(得分:0)
我建议在表格视图1的顶部声明3个变量:
var trainingCategories: [String]?
来保存你的词典var arrayForKey: [String]?
从字典中保存适当的数组var selectedKey: String?
保留所选的dict键还在表视图2中创建一个变量来保存将从表视图1传递的dict数组。 var arrayForKey2: [String]?
将以下内容添加到表格视图1的viewDidLoad
方法中,然后从CellForRowAt
中删除。每次在每个可重用单元格上调用CellForRowAt
时,都会停止调用它。
trainingCategories = Array(trainingDict.keys)
trainingCategories?.sort { return $0 < $1}
在didSelectRowAt
中,在调用selectedKey = trainingCategories[indexPath.row]
方法之前获取所选的词典键self.performSegue...
。
最后覆盖表视图1中的prepareForSegue
方法,将信息传递给表视图2:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue" {
secondTableView = segue.destination as! DrillsViewController
//Get array for selected dictionary key
arrayForKey = trainingDict[selectedKey]
//Pass to second table view
secondTableView.arrayForKey2 = arrayForKey
}
}
在表格视图2的cellForRowAt
中,您可以像以前一样设置单元格标签。例如。 cell.textLabel?.text = "\(arrayForKey2[indexPath.row])"
更新修正:
表视图的cellForRowAt
中仍然存在以下内容:请删除。
var trainingCategories = Array(trainingDict.keys)
trainingCategories.sort { return $0 < $1}
在表格视图1的viewDidLoad
中,在以下行的开头删除var
。
var trainingCategories = Array(trainingDict.keys)