I'm trying to get a tableview to display parsed data, but the array that is supposed to be populating my tableview isn't being appended. Could someone take a quick look and let me know what I'm doing wrong?
import UIKit
import SwiftKeychainWrapper
import Firebase
class FeedVC: UIViewController, UITableViewDelegate, UITableViewDataSource {
@IBOutlet var tableView: UITableView!
var posts = [Post]()
override func viewDidLoad()
{
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
DataService.ds.REF_POSTS.observeEventType(.Value, withBlock: { snapshot in
if let snapshot = snapshot.children.allObjects as? [FIRDataSnapshot]
{
for snap in snapshot
{
if let postDict = snap.value as? Dictionary<String, AnyObject>
{
let key = snap.key
let post = Post(postID: key, postData: postDict)
self.posts.append(post)
}
}
}
})
tableView.reloadData()
}
override func viewDidAppear(animated: Bool) {
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return posts.count
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let post = posts[indexPath.row]
print("\(post.caption)")
return tableView.dequeueReusableCellWithIdentifier("PostCell") as! PostCell
}
@IBAction func signOutBtnTapped(sender: UIButton) {
KeychainWrapper.defaultKeychainWrapper().removeObjectForKey(KEY_UID)
try! FIRAuth.auth()?.signOut()
performSegueWithIdentifier("toSignInVC", sender: nil)
}
}
Thanks guys.
Your data retrieval appears to be an async operation, which probably does not finish before the table is rendered. Try reloading the table data on a new line after self.posts.append(post)
or at the end of the completion block.
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