问题
I am having trouble getting the didSelectRowAt method to work for a TableView inside of a regular ViewController. I have already made sure that the delegate and data source for the table are set in the ViewController code. This ViewController populates the tableview cells with results from a search query to an API, and the rendering of cell data is working fine.
It's just the didSelectRowAt method that is not registering. I did try manually adding the same delegate information on the Main.storyboard, but the little + sign won't trigger any popup windows. I am wondering if there is something in the Main.storyboard that needs fixing. I have attached the images of the ViewController and TableView connections inspector as well. I am new to iOS development and don't have much experience with graphic interfaces for mobile design, so I am assuming it's something there but maybe I am wrong.
Here's the basic version of my code:
class SearchViewController: UIViewController, UISearchBarDelegate, UITableViewDelegate, UITableViewDataSource {
@IBOutlet weak var tableView: UITableView!
@IBOutlet var searchBar: UISearchBar!
...variable declarations ....
override func viewDidLoad() {
super.viewDidLoad()
self.hideKeyboardWhenTappedAround()
searchResults = []
searchBar.delegate = self
tableView.dataSource = self
tableView.delegate = self
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1;
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchResults!.count;
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "searchTableViewCell", for: indexPath) as! SearchTableViewCell
if(searchActive && !(self.searchResults?.isEmpty)!) {
(doing some stuff with search results here...works fine)
}
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("hello!")
}
func searchBar(_ searchBar: UISearchBar,
textDidChange searchText: String) {
print("search text \(searchText)")
getSearchResultJSON(term: searchText) { json in
let data = json as! [Dictionary<String, String>]
self.searchResults = data
}
self.tableView.reloadData()
}
...
}
[
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EDIT: as a sanity check for if the search asynchronous function was changing anything, I just tried removing all search-related code and filling the tableview from a hardcoded dummy variable array. It worked to display the dummy variables, but still no ability to select a cell and get any reaction. I also saw a couple mentions that I had previously had a typo with didDeSelectRowAt instead of didSelectRow at, that has been fixed but the behaviour is the same.
This ended up being related to a tap gesture that occurs in the hideKeyboardWhenTappedAround() extension that I wrote
回答1:
Found it! The culprit was the self.hideKeyboardWhenTappedAround(), which is an extension I wrote to hide the keyboard. This interfered with the tap of a cell because it did indeed utilize UITapGestureRecognizer. Thanks for the hints everyone.
回答2:
You are using didDeselectRowAt instead of didSelectRowAt
Edit
Well, use this below delegate then
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
and make your controller conform to UIGestureRecognizerDelegate
回答3:
If you are using tap gesture on main view then table view cell did select method is not working properly.
回答4:
In picture you uploaded, delegate and datasource aren't connected to the ViewController. Remove the code in viewdidload (tableview.delegate = self) and connect them in storyboard.
来源：https://stackoverflow.com/questions/41499421/cant-get-didselectrowat-to-work-for-tableview