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我正在尝试创建一个类似于 Yik Yak 的查询类型，我可以在其中看到某个位置内的消息查询，但是每当我发布消息时，结果都不会在查询中显示数据。我基本上希望我发送的消息显示在查询中。我想我在代码中正确地做了我的逻辑，但我在这里遗漏了一些可以在查询中显示数据的东西。上周我一直在解决这个问题，仅此一个修复程序就可以结束我项目的这一部分。谁能帮我这个？

import UIKit
import ParseUI
import Parse
import CoreLocation

@available(iOS 8.0, *)
class HomeViewController: PFQueryTableViewController,CLLocationManagerDelegate {

var messages = [String]()
var users = [String: String]()

let bubbleFeeds = [
    ("1"),
    ("2"),
    ("I3"),
    ("4"),
    ("5"),
    ("6") ]

let locationManager = CLLocationManager()
var currLocation : CLLocationCoordinate2D?

override init(style: UITableViewStyle, className: String!) {
    super.init(style: style, className: className)
}


required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)

    self.parseClassName = "BubbleTest"
    self.textKey = "textField"
    self.pullToRefreshEnabled = true
    self.objectsPerPage = 200

}

private func alert(message : String) {
    let alert = UIAlertController(title: "Oops something went wrong.", message: message, preferredStyle: UIAlertControllerStyle.Alert)
    let action = UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil)
    let cancel = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil)
    let settings = UIAlertAction(title: "Settings", style: UIAlertActionStyle.Default) { (action) -> Void in
        UIApplication.sharedApplication().openURL(NSURL(string: UIApplicationOpenSettingsURLString)!)
        return
    }
    alert.addAction(settings)
    alert.addAction(action)
    self.presentViewController(alert, animated: true, completion: nil)
}



override func viewDidLoad() {
    super.viewDidLoad()
    self.tableView.estimatedRowHeight = 60
    self.tableView.rowHeight = UITableViewAutomaticDimension
    locationManager.desiredAccuracy = 1000
    locationManager.delegate = self
    locationManager.requestWhenInUseAuthorization()
    locationManager.startUpdatingLocation()


    // Uncomment the following line to preserve selection between presentations
    // self.clearsSelectionOnViewWillAppear = false

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem()
}

func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
    alert("Cannot fetch your location")
}




func queryForTable() -> PFQuery! {
    let query = PFQuery(className: "BubbleTest")
    if let queryLoc = currLocation {
        query.whereKey("location", nearGeoPoint: PFGeoPoint(latitude: queryLoc.latitude, longitude: queryLoc.longitude), withinMiles: 10)
        query.limit = 200;
        query.orderByDescending("createdAt")
    } else {
        /* Decide on how the application should react if there is no location available */
        query.whereKey("location", nearGeoPoint: PFGeoPoint(latitude: 37.411822, longitude: -121.941125), withinMiles: 10)
        query.limit = 200;
        query.orderByDescending("createdAt")
    }

    return query
}


func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    locationManager.stopUpdatingLocation()
    if(locations.count > 0){
        let location = locations[0]
        print(location.coordinate)
        currLocation = location.coordinate
    } else {
        alert("Cannot receive your location")
    }
}


    override func objectAtIndexPath(indexPath: NSIndexPath!) -> PFObject! {
        var obj : PFObject? = nil
        if(indexPath.row < self.objects!.count){
            obj = self.objects![indexPath.row] as! PFObject
        }

        return obj
    }


//    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
//
//




// MARK: - Table view data source

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return users.count

}



override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("object", forIndexPath: indexPath) as! Bubbles
let object = PFObject(className: "BubbleTest")

cell.name.text = object.valueForKey ("userName") as? String
cell.message.text = object.valueForKey("textField") as? String
cell.dateTime.text = "\((indexPath.row + 1) * 3)m ago"
cell.message.numberOfLines = 0
let score = object.valueForKey("count") as! Int
cell.likeCount.text = "\(score)"
let replycnt = object.valueForKey("replies") as! Int
cell.responseCount.text = "\(replycnt) replies"
//cell.userImage.image = PFUser.currentUser()?.valueForKey("photo") as! PFFile


// Configure the cell...

return cell
}

@IBAction func likeButton(sender: AnyObject) {
            let hitPoint = sender.convertPoint(CGPointZero, toView: self.tableView)
            let hitIndex = self.tableView.indexPathForRowAtPoint(hitPoint)
            let object = objectAtIndexPath(hitIndex)
            object.incrementKey("count")
            object.saveInBackground()
            self.tableView.reloadData()
            NSLog("Top Index Path \(hitIndex?.row)")
}
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1 回答 1

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您正在覆盖部分中的行数以返回用户数，但这始终为零，因为您从未向字典中添加任何内容。

PF 查询表视图控制器的全部意义在于它为您管理数据收集，但您正在替换其中的关键部分并破坏系统。返回并查看用户指南以确定您的子类需要如何工作以获得您想要的效果。

于 2015-10-09T06:54:22.650 回答