如何以编程方式将自定义单元格插入TableView

Question

I am trying to insert my custom cells into my table view with data that is loaded from a web request, but the table insert script is running before the data is loaded which has me ending up with a blank table.

Currently my code is this and I have tested it to work with dummy data:

    public func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        mainTableView.estimatedRowHeight = 50.0
        mainTableView.rowHeight = UITableViewAutomaticDimension
        var cell : postWithTitleAndImageTableViewCell = mainTableView.dequeueReusableCellWithIdentifier("postWithTitleAndImage") as postWithTitleAndImageTableViewCell
        let image = UIImage(named: "chainz on deck.jpg")
        var id = json[indexPath.row]["id"] as String
        var title = json[indexPath.row]["name"] as String
        var text = json[indexPath.row]["post"] as String
        var time = json[indexPath.row]["time"] as String
        var popularity = json[indexPath.row]["popularity"] as String
        //add clientid
        cell.setCell(id, title: title, image: image!, text: text, time: time, popularity: popularity)
        return cell as postWithTitleAndImageTableViewCell
    }

    func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
        println("You selected cell #\(indexPath.row)! Which the ID is: \(readIDs[indexPath.row])")
    }

    public func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return json.count
    }

The code does exactly what it's supposed to, except the json variable is loaded from a web request and the table is trying to insert before the data is actually loaded. How should I fix this? Is there a way to call for a manual insertion of a custom cell, or is there a way to call the tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) function once the data is loaded? What should I do?

Answer 1

Using mainTable.reloadData() worked. Thanks @Paulw11