iOS why tableview always stop in breakpoint? - ios

Question

I create a TableView via StoryBoard. I connect all the element to a UITableViewCell class call PostTableCell. I already set identifier for the tableCell in StoryBoard. My code is as below:
class PopViewController: UIViewController ,IndicatorInfoProvider ,UITableViewDataSource, UITableViewDelegate{
#IBOutlet weak var popTableView: UITableView!
var posts = [Post]()
override func viewDidLoad() {
super.viewDidLoad()
popTableView.dataSource = self
popTableView.delegate = self
fetchInitialPost()
}
func fetchInitialPost(){
Alamofire.request(MyURL, method: .get).responseJSON{
response in
switch response.result{
case .success(let result):
let json = JSON(result)
guard let feedArr = json["feed"].array else{
return
}
for post in feedArr {
if let post = post.dictionary,let feed = Post.init(dict: post){
self.posts.append(feed)
}
}
self.popTableView.reloadData()
break
case .failure(let error):
print(error)
}
}
}
func indicatorInfo(for pagerTabScripController : PagerTabStripViewController ) -> IndicatorInfo {
return IndicatorInfo (title : "Pop")
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.posts.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "PostTableCell", for: indexPath) as! PostTableCell
cell.posts = self.posts[indexPath.row]
return cell
}
}
I think I do all I should do in order to make it work already. But when I run the project I gives me this error, but I don't have any error in console. The app is just blank and this error below pops out.
So what cause this problem? And how to solve this?

Answer 1

This usually happens when there is a problem when loading the Storyboard.
I think (this has happend to me multiple times) you maybe have User Defined Runtime Attributes on popTableView in your Storyboard. If there are any that can not be set, because popTableView does not have the respective property, the debugger will show the behavior that you are seeing.
You can check if there are any User Defined Runtime Attributes by selecting the table view in Interface Builder an checking the Identity Inspector.
Try deleting any attributes that might cause problems.
Alternatively you forgot to connect the #IBOutlet in your Storyboard. You can check how to do that in the official documentation.