Question

我的tableview中随机出现“索引超出范围”错误，我用它来搜索功能。

它在cell.article = self.searchResults?[indexPath.row]

崩溃

99％的工作时间，但有时即使我使用相同的搜索查询，也会出现此错误并崩溃。

func updateSearchResultsForSearchController(searchController: UISearchController)
    {
        self.searchResults?.removeAll(keepCapacity: false)
        if (!searchController.searchBar.text!.isEmpty){
            let query = ["q" : searchController.searchBar.text]
            let start = 1
            let size = 15
            let index = "articles"
            let parameters : [String : AnyObject] = ["index": index, "query": String(query), "start": start, "size": size]
            let url = "http://api.url"
            Alamofire.request(.POST, url, parameters: parameters)
                .responseJSON { response in
                    guard response.result.error == nil else {
                        print(response.result.error!)
                        debugPrint(response)
                        return
                    }
                    if let value: AnyObject = response.result.value {
                        let search = JSON(value)
                        if let data = search["articles"].arrayValue as [JSON]?{
                            self.searchResults = data
                            self.view.hideLoading()
                            self.tableView.reloadData()
                        }
                    }
            }
        }
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
            let cell = tableView.dequeueReusableCellWithIdentifier("SearchCell") as! SearchTableViewCell        
            let gesture = UILongPressGestureRecognizer(target: self, action: #selector(SearchTableViewController.longPressCell(_:)))
            gesture.minimumPressDuration = 0.5
            cell.addGestureRecognizer(gesture)

            cell.article = self.searchResults?[indexPath.row] ---> "EXC_BREAKPOINT" here. 
            cell.authorButton.tag = indexPath.row

            return cell
        }

Answer 1

问题在于删除所有数据

self.searchResults?.removeAll(keepCapacity: false)

您没有重新加载tableView，并且在Alamofire完成后调用self.tableView.reloadData()，tableView可能会崩溃。您可以在删除元素后重新加载tableView，或者只是不删除它们，无论如何都会被Alamofire完成时覆盖它们

swift - cellforrowindexpath“索引超出范围”错误

1 个答案: