我是编程的初学者，也是Stack Overflow的新手。我还在弄清楚代码和网站是如何工作的，所以如果我没有正确使用它们，我很抱歉。 （我不是英语母语人士，但我会尽力解释我的问题）
所以，我正在为我的学校项目建立一个待办事项列表应用程序，但它并没有很好地运作。我没有任何红色警告标记，但是当我运行模拟器并单击＆＃34;添加按钮＆＃34;时，它会停止运行并返回到代码文件。在那里，我看到＆＃34;线程1：信号SIGABRT＆＃34;在AppDelegate.swift中。
控制台中的消息是：
2017-01-06 20：14：30.057054 To-Do-List [61234：3241731] [MC] systemgroup.com.apple.configurationprofiles路径的系统组容器是/ Users / mikinatanaka / Library / Developer / CoreSimulator /设备/ 27DCECFA-4E53-4C94-9985-2D4BBA9575CE /数据/容器/共享/ SystemGroup / systemgroup.com.apple.configurationprofiles 2017-01-06 20：14：30.058241待办事项列表[61234：3241731] [MC]从私人有效用户设置中读取。 2017-01-06 20：14：32.392577待办事项列表[61234：3241836] 0x600000548cf0复制匹配资产回复：XPC_TYPE_DICTIONARY {count = 1，transaction：0，voucher = 0x0，contents = ＆＃34;结果＆＃34; =＆GT; ：29 } 2017-01-06 20：14：32.393567 To-Do-List [61234：3241836] 0x6080003406e0守护进程配置查询回复：XPC_TYPE_DICTIONARY {count = 2，transaction：0，voucher = 0x0，contents = ＆＃34;字典＆＃34; =＆GT; {count = 1，transaction：0，voucher = 0x0，contents = ＆＃34; SERVERURL＆＃34; =＆GT; {count = 3，transaction：0，voucher = 0x0，contents = ＆＃34; com.apple.CFURL.magic＆＃34; =＆GT; C3853DCC-9776-4114-B6C1，FD9F51944A6D ＆＃34; com.apple.CFURL.string＆＃34; =＆GT; {length = 30，contents =＆＃34; https://mesu.apple.com/assets/＆＃34; } ＆＃34; com.apple.CFURL.base＆＃34; =＆GT; ：null-object } } ＆＃34;结果＆＃34; =＆GT; ：0 }
2017-01-06 20:14:32.394060 To-Do-List[61234:3241836] [MobileAssetError:29] Unable to copy asset information from https://mesu.apple.com/assets/ for asset type com.apple.MobileAsset.TextInput.SpellChecker
2017-01-06 20:14:37.185 To-Do-List[61234:3241731] -[To_Do_List.AddToDo addItemWithSender:]: unrecognized selector sent to instance 0x7fc5184025d0
2017-01-06 20:14:37.320 To-Do-List[61234:3241731] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[To_Do_List.AddToDo addItemWithSender:]: unrecognized selector sent to instance 0x7fc5184025d0'
*** First throw call stack:
(
0 CoreFoundation 0x0000000106ec234b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x000000010692321e objc_exception_throw + 48
2 CoreFoundation 0x0000000106f31f34 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 CoreFoundation 0x0000000106e47c15 ___forwarding___ + 1013
4 CoreFoundation 0x0000000106e47798 _CF_forwarding_prep_0 + 120
5 UIKit 0x00000001072e75b8 -[UIApplication sendAction:to:from:forEvent:] + 83
6 UIKit 0x000000010746cedd -[UIControl sendAction:to:forEvent:] + 67
7 UIKit 0x000000010746d1f6 -[UIControl _sendActionsForEvents:withEvent:] + 444
8 UIKit 0x000000010746c0f2 -[UIControl touchesEnded:withEvent:] + 668
9 UIKit 0x0000000107354ce1 -[UIWindow _sendTouchesForEvent:] + 2747
10 UIKit 0x00000001073563cf -[UIWindow sendEvent:] + 4011
11 UIKit 0x000000010730363f -[UIApplication sendEvent:] + 371
12 UIKit 0x0000000107af571d __dispatchPreprocessedEventFromEventQueue + 3248
13 UIKit 0x0000000107aee3c7 __handleEventQueue + 4879
14 CoreFoundation 0x0000000106e67311 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
15 CoreFoundation 0x0000000106e4c59c __CFRunLoopDoSources0 + 556
16 CoreFoundation 0x0000000106e4ba86 __CFRunLoopRun + 918
17 CoreFoundation 0x0000000106e4b494 CFRunLoopRunSpecific + 420
18 GraphicsServices 0x000000010b4c4a6f GSEventRunModal + 161
19 UIKit 0x00000001072e5964 UIApplicationMain + 159
20 To-Do-List 0x00000001063415df main + 111
21 libdyld.dylib 0x000000010a53c68d start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
这个错误是什么意思？我该如何解决？
我知道这是基本问题，但我读了很多文章后我无法理解。
在某些文章中，他们说由于View Controller中的连接错误而发生错误。这样对吗？我检查了所有连接，但我没有看到任何连接错误。
请给我一些帮助来解决错误！非常感谢你。
我正在使用Xcode版本8.1和Swift 2.0。我复制并粘贴了以下代码：
ViewController.swift
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var todolistTable: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
func viewDidLoad() {
if UserDefaults.standard.object(forKey: "todoList") != nil {
todoItem = UserDefaults.standard.object(forKey: "todoList") as! [String]
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return todoItem.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellValue = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "cell")
cellValue .textLabel?.text = todoItem[indexPath.row]
return cellValue
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath){
if editingStyle == UITableViewCellEditingStyle.delete{
todoItem.remove(at: indexPath.row)
UserDefaults.standard.set(todoItem, forKey: "todoList")
todolistTable.reloadData()
}
}
override func viewDidAppear(_ animated: Bool) {
todolistTable.reloadData()
}
}
AddToDo.swift
import UIKit
var todoItem = [String]()
class AddToDo: UIViewController {
@IBOutlet weak var itemText: UITextField!
@IBAction func addItem(sender: AnyObject) {
todoItem.append(itemText.text!)
itemText.text = ""
UserDefaults.standard.set(todoItem, forKey: "todoList")
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func textFieldShouldReturn(textField: UITextField!) -> Bool {
itemText.resignFirstResponder()
return true
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}