(快速)致命错误:索引超出范围 [英] (Swift) fatal error: Index out of range
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问题描述
我有三个数组。一个显示tableView上每个部分的标题,一个显示标题,一个包含每个单元格的链接。运行此代码时,我得到:
I have three arrays. One displays headers for each section on the tableView, one displays titles, and one has the links for each cell. When I run this code, I get:
fatal error: Index out of range
我的代码是:
import UIKit
class FirstViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var headers = ["Bein Sports", "Sky Sports", "Alkass", "Other"]
var channels = [["Bein Sports 1","Bein Sports 2","Bein Sports 3","Bein Sports 4","Bein Sports 5","Bein Sports 6","Bein Sports 7","Bein Sports 8","Bein Sports 9","Bein Sports 10","Bein Sports News"],
["Sky Sports 1","Sky Sports 2","Sky Sports 3","Sky Sports 4","Sky Sports 5"],
["Alkass One", "Alkass Two", "Alkass Three", "Alkass Four", "Alkass Five"],
["BT Sports 1", "BT Sports 2", "Real Madrid TV", "Real Madrid TV 2"]]
var links = [["https://www.google.ca","https://www.facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"],
["https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"],
["https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"],
["http://twitter.com","http://facebook.com","http://www.google.com","http://www.instagram.com"]]
var myIndex = 0
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return channels[section].count
}
func numberOfSections(in tableView: UITableView) -> Int {
return channels.count //Rows
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return headers[section] //Sections
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = channels[indexPath.section][indexPath.row] //TextLabel
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
myIndex = [indexPath.section][indexPath.row]
performSegue(withIdentifier: "segue", sender: self)
}
}
在调试器中,这是突出显示的行:
in the debugger this is the highlighted line:
myIndex = [indexPath.section][indexPath.row]
推荐答案
您可以将myIndex存储为IndexPath并使用myIndex获取indexPath行和这样的部分
you can store myIndex as IndexPath and using myIndex to get indexPath row and section just like this
var myIndex : IndexPath = IndexPath()
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
myIndex = NSIndexPath(row: indexPath.section, section: indexPath.row) as IndexPath
performSegue(withIdentifier: "segue", sender: self)
}
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