我正在制作一个待办清单应用,但是当我试图从列表中删除某些内容时,Xcode会报出一个错误,提示“致命错误:数组索引超出范围”。有人可以告诉我在我的数组中做错了什么导致出现这种情况吗?
import UIKit
class SecondViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
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.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return eventList.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "cell")
cell.textLabel?.text = eventList[indexPath.row]
return cell
}
override func viewWillAppear(animated: Bool) {
if var storedEventList : AnyObject = NSUserDefaults.standardUserDefaults().objectForKey("EventList") {
eventList = []
for var i = 0; i < storedEventList.count; ++i {
eventList.append(storedEventList[i] as NSString)
}
}
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if(editingStyle == UITableViewCellEditingStyle.Delete) {
eventList.removeAtIndex(indexPath.row)
NSUserDefaults.standardUserDefaults().setObject(eventList, forKey: "EventList")
NSUserDefaults.standardUserDefaults().synchronize()
}
}
}
在eventList.removeAtIndex(indexPath.row)
处也会创建一个断点,显示EXC_BAD_INSTRUCTION。