我有一个像这样的Swift结构<form id="myForm">
<input type="text" name="sentence1" id="st1" placeholder="Text here" required>
<input type="text" name="sentence1" id="st2" placeholder="Text here" required>
<input type="text" name="sentence1" id="st3" placeholder="Text here" required>
<input type="text" name="sentence1" id="st4" placeholder="Text here" required>
<input type="text" name="sentence1" id="st5" placeholder="This field is not required">
<button type="submit" id="submit-form">Submit</button>
</form>
：
Reflection在struct Reflection {
let title: String
let body: String
let author: String
let favorite: Bool
let creationDate: Date
let id: UUID
}
extension Reflection {
var plistRepresentation: [String: AnyObject] {
return [
"title": title as AnyObject,
"body": body as AnyObject,
"author": author as AnyObject,
"favorite": favorite as AnyObject,
"creationDate": creationDate as AnyObject,
"id": id as AnyObject
]
}
init(plist: [String: AnyObject]) {
title = plist["title"] as! String
body = plist["body"] as! String
author = plist["author"] as! String
favorite = plist["favorite"] as! Bool
creationDate = plist["creationDate"] as! Date
id = plist["id"] as! UUID
}
}
class StorageController {
fileprivate let documentsDirectoryURL = FileManager.default
.urls(for: .documentDirectory, in: .userDomainMask)
.first!
fileprivate var notesFileURL: URL {
return documentsDirectoryURL
.appendingPathComponent("Notes")
.appendingPathExtension("plist")
}
func save(_ notes: [Reflection]) {
let notesPlist = notes.map { $0.plistRepresentation } as NSArray
notesPlist.write(to: notesFileURL, atomically: true)
}
func fetchNotes() -> [Reflection] {
guard let notePlists = NSArray(contentsOf: notesFileURL) as? [[String: AnyObject]] else {
return []
}
return notePlists.map(Reflection.init(plist:))
}
}
class StateController {
fileprivate let storageController: StorageController
fileprivate(set) var notes: [Reflection]
init(storageController: StorageController) {
self.storageController = storageController
self.notes = storageController.fetchNotes()
}
func add(_ note: Reflection) {
notes.append(note)
storageController.save(notes)
}
func update(_ note: Reflection) {
for (index, storedNote) in notes.enumerated() {
guard storedNote.id == note.id else {
continue
}
notes[index] = note
storageController.save(notes)
break
}
}
}
中实例化这样的Reflection会导致我的应用崩溃：
viewWillAppear我没有控制台输出，只是主线程SIGABRT错误。会发生什么事？
答案 0 :(得分：0)
就像一个白痴一样，我正在清理我的代码，并注释掉了为重用标识符注册nib的行。但是，我认为如果Xcode可以为这样的错误打印出有用的错误消息会有所帮助。