swift - 定义与以前的值冲突 - 另外，何时删除覆盖？

Question

所以我试图用一组 cloudkit 下载的项目制作一个 tableview。但是，我遇到了这个简单的“定义与先前值冲突”的小错误。 cellForRowAtIndexPath 函数会发生此错误 - 据推测它与 numberOfRowsInSection 函数冲突。我试图移动/删除后一个函数的括号，并在末尾放置一个问号/可选...“-> UITableViewCell？”无济于事。错误可能来自哪里？

此外，就目前而言，xcode 删除了每个 tableview 函数的覆盖部分。为什么有时会保留，何时删除？

import UIKit
import CloudKit
class DiningTable: UITableViewController {
 var categories: Array<CKRecord> = []
override func viewDidLoad() {
    super.viewDidLoad()

func getRecords()
    {
        categories = []

        let publicDatabase = CKContainer.defaultContainer().publicCloudDatabase

       let predicate = NSPredicate(value: true)
        let query = CKQuery(recordType: "DiningTypes", predicate: predicate)

        let queryOperation = CKQueryOperation(query: query)
        queryOperation.desiredKeys  = ["Name", "Address", "Picture"]
        queryOperation.qualityOfService = .UserInteractive
        queryOperation.recordFetchedBlock = { (record:CKRecord) -> Void in
            let categoryRecord = record
            self.categories.append(categoryRecord)
    }
        queryOperation.queryCompletionBlock = { (cursor:CKQueryCursor?, error: NSError?) -> Void in
            if (error != nil) {
                print("Failed to get data from iCloud - \(error!.localizedDescription)")
                dispatch_async(dispatch_get_main_queue(), {
                    self.tableView.reloadData()
                })
            }
        }
        publicDatabase.addOperation(queryOperation
    }

func tableView(tableView: UITableView, numberOfRowsInSection: Int) -> Int {
        return self.categories.count
    }
     func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
    {


        let cell = tableView.dequeueReusableCellWithIdentifier("dining") as! DiningTableCell
        let restaurant: CKRecord = categories[indexPath.row]
        cell.RestaurantName?.text = restaurant.valueForKey("Name") as? String


       let img = restaurant.objectForKey("Picture") as! CKAsset

        cell.RestaurantPhoto.image = UIImage(contentsOfFile: img.fileURL.path!)


        return cell
    }
func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if segue.identifier == "segue1" {    
        if let destViewController = segue.destinationViewController as? RestaurantTable {
            let indexPath = self.tableView.indexPathForSelectedRow!
            destViewController.indexpath1 = indexPath  
        }
    }
    }
func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
}
}

Answer 1

你的整个类定义嵌套在你的

override func viewDidLoad() {

函数。在调用 super.viewDidLoad() 之后放置一个右括号