I've got Pull to Refresh working great, except when the table reloads there is a split second delay before the data in the table reloads.
Do I just have some small thing out of place? Any ideas?
viewDidLoad
:
override func viewDidLoad() {
super.viewDidLoad()
self.refreshControl?.addTarget(self, action: "handleRefresh:", forControlEvents: UIControlEvents.ValueChanged)
self.getCloudKit()
}
handleRefresh
for Pull to Refresh:
func handleRefresh(refreshControl: UIRefreshControl) {
self.objects.removeAll()
self.getCloudKit()
dispatch_async(dispatch_get_main_queue(), { () -> Void in
refreshControl.endRefreshing()
})
}
Need the data in two places, so created a function for it getCloudKit
:
func getCloudKit() {
publicData.performQuery(query, inZoneWithID: nil) { results, error in
if error == nil { // There is no error
for play in results! {
let newPlay = Play()
newPlay.color = play["Color"] as! String
self.objects.append(newPlay)
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.tableView.reloadData()
})
} else {
print(error)
}
}
}
tableView
:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath)
let object = objects[indexPath.row]
if let label = cell.textLabel{
label.text = object.matchup
}
return cell
}
This is how you should do this:
handleRefresh
function, add a bool to track the refresh operation in process - say isLoading
.getCloudKit
function just before reloading the table view call endRefreshing
function if isLoading
was true. isLoading
to false
.getCloudKit
function.endRefreshing
function and would not reload data on table. Trust me - this saves a lot and gives a good end user experience as most of time there is no change in data!