How to create a PFQueryTableViewController with Parse in Swift?

问题

I've imported all the frameworks required but from that point on I don't quite know what to do (I'm new to Swift and no absolutly nothing about Objective C). Parse docs aren't in Swift yet so can someone please provide me with a starting point?

I've initialized my view controller (which doesn't appear when I run the app, I just get a black screen; but based on this video, I should see a table: https://parse.com/tutorials/parse-query-table)

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    //Link to Parse
    Parse.setApplicationId("...", clientKey: "...")

    var controller:PFQueryTableViewController = PFQueryTableViewController(className: "test1")
    self.window?.rootViewController = controller
    self.window?.makeKeyAndVisible()

    return true

回答1:

Make sure you have imported all the parse SDK's Create a 2 new cocoa touch class', give one the subclass of PFQueryTableViewController and the other PFTableViewCell. Hook them up in the storyboards. Make sure the Tableview and the cell are pointing to these files. Your Tableview file should look something like this;

import UIKit

class YourTableViewController: PFQueryTableViewController {







// Initialise the PFQueryTable tableview
override init!(style: UITableViewStyle, className: String!) {
    super.init(style: style, className: className)
}

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

    // Configure the PFQueryTableView
    self.parseClassName = "yourClass"

    self.textKey = "yourObject"
    self.pullToRefreshEnabled = true
    self.paginationEnabled = false
}

// Define the query that will provide the data for the table view
override func queryForTable() -> PFQuery! {
    var query = PFQuery(className: "yourClass")
    query.orderByAscending("yourObject")


    return query
}

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

    var cell = tableView.dequeueReusableCellWithIdentifier("Cell") as CustomTableViewCell!
    if cell == nil {
        cell = CustomTableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "Cell")
    }

    // Extract values from the PFObject to display in the table cell

    cell.info.text = object["info"] as String


    // Date for cell subtitle
    var dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd"
    let dateForText = object["date"] as NSDate
    cell.date.text = dateFormatter.stringFromDate(dateForText)







    return cell
}

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    // Get the new view controller using [segue destinationViewController].
    var detailScene = segue.destinationViewController as YourDetailViewController

    // Pass the selected object to the destination view controller.
    if let indexPath = self.tableView.indexPathForSelectedRow() {
        let row = Int(indexPath.row)
        detailScene.currentObject = objects[row] as? PFObject
    }
}


Make sure you have set the cells reuse identifier to match what you are setting it to in this code.

When you I called cell.info, cell.date. These are IBOutlets I have set up in my CustomTableViewCell file.

class CustomTableViewCell: PFTableViewCell {

@IBOutlet weak var info: UILabel!
@IBOutlet weak var date: UILabel!
@IBOutlet weak var mixCoverPhotoImageView: PFImageView!




}

回答2:

i have handle the image with the Alamofireimage-framework. The function is really simple.

Alamofire.request(myURL).responseImage(completionHandler: { (response) in
            if let ThumbImage = response.result.value {
                DispatchQueue.main.async{
                cell?. mixCoverPhotoImageView?.image = ThumbImage
            }

来源：https://stackoverflow.com/questions/27736768/how-to-create-a-pfquerytableviewcontroller-with-parse-in-swift

标签

ios

swift

parse-platform

pfquery