[英]fatal error: NSArray element failed to match the Swift Array Element type
[英]Parse: fatal error: NSArray element failed to match the Swift Array Element type
每當我從集合視圖中刪除項目,關閉應用程序,重新啟動應用程序然后返回項目時,都會出現此錯誤(嚴重錯誤:NSArray元素與Swift Array元素類型不匹配)。 我發現類似的解決方案可以對初始化程序進行重新排序,但對我來說似乎並不滿意。
**AppDelegate.swift**
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// register PFObject subclasses
Task.registerSubclass()
Task.initialize()
Project.registerSubclass()
Project.initialize()
User.registerSubclass()
User.initialize()
**Project.swift**
import UIKit
import Parse
public class Project: PFObject, PFSubclassing
{
// MARK: - Public API
@NSManaged public var projectTitle: String!
@NSManaged public var owner: User!
@NSManaged public var tasks: [Task]
// MARK - Required PFSubclassing Parse setup
override public class func initialize()
{
struct Static {
static var onceToken: dispatch_once_t = 0
}
dispatch_once(&Static.onceToken) {
Task.initialize()
self.registerSubclass()
}
}
public static func parseClassName() -> String {
return "Project"
}
// MARK: Conveinience Init
init(projectTitle: String, owner: User, tasks: [Task])
{
super.init()
self.projectTitle = projectTitle
self.owner = owner
self.tasks = tasks
}
override init() { super.init() }
}
**Task.swift**
import UIKit
import Parse
public class Task: PFObject, PFSubclassing
{
// MARK: - Public API
@NSManaged public var title: String
@NSManaged public var isChecked: Bool
@NSManaged public var projectOwner: Project
@NSManaged public var category: String
@NSManaged public var isImportant: Bool
// MARK - Required PFSubclassing Parse setup
override public class func initialize()
{
struct Static {
static var onceToken: dispatch_once_t = 0
}
dispatch_once(&Static.onceToken) {
self.registerSubclass()
}
}
public static func parseClassName() -> String {
return "Task"
}
// MARK: Conveinience Init
// Create new project
init(title: String, projectOwner: Project, isChecked: Bool, category: String, isImportant: Bool)
{
super.init()
self.title = title
self.projectOwner = projectOwner
self.isChecked = isChecked
self.category = category
self.isImportant = isImportant
}
override init() { super.init() }
}
當我嘗試使用tasks
數組時,會發生該錯誤。 我將其加載到UICollectionView中。
這是我從Parse抓取任務的可能相關代碼:
// Fetch data from Parse
func fetchProject() {
let isCurrentTab = navigationController?.tabBarItem.title
let tasksQuery = PFQuery(className: Task.parseClassName())
tasksQuery.whereKey("category", equalTo: isCurrentTab!)
tasksQuery.whereKey("projectOwner", equalTo: project)
tasksQuery.findObjectsInBackgroundWithBlock { (tasks, error) -> Void in
if error == nil {
self.project.tasks.removeAll()
print(tasks)
for task in tasks! {
print(task)
let task = task as! Task
self.project.tasks.append(task)
}
self.collectionView?.reloadData()
} else {
print("\(error?.localizedDescription)")
}
}
}
我正在使用Xcode 7.1和Parse v1.8.5
任何幫助將非常感激!
我最終使用指針訪問任務數組,而不是將其嵌套在projects數組中。 這樣,我可以直接將所有調用都發送到該數組,而不會嘗試降低到嵌套級別而不會丟失任何內容。
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