为什么UITableView commitEditing不起作用？

Question

这是我的代码：

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.Delete) {
        print("1")
        let deleteAction = UITableViewRowAction(style: .Normal, title: "Delete") { (rowAction: UITableViewRowAction, indexPath:NSIndexPath) -> Void in
            print("clicking1")
            if let selfiePublicID = self.selfiePublicID {
                print("clicking2")
                let URL = "\(self.properties.host)\(self.properties.addComment)\(selfiePublicID)/action/2"
                print(URL)

                self.userParameters.profileParameters["value"] = self.comments[indexPath.row].commentText

                Alamofire.request(.DELETE, URL, parameters: self.userParameters.profileParameters, encoding: .JSON).validate().responseJSON { response in
                    do {
                        let json = JSON(data: response.data!)
                        print(json)

                        self.comments.removeAtIndex(indexPath.row)
                        self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
                    }
                }
            }
        }

        deleteAction.backgroundColor = UIColor.redColor()
    }
}

它起作用了，但现在却不起作用，我也不知道为什么。 在日志中，我得到1 ，但是后来我没有得到clicking1和clicking2 。

那里是什么问题？

Answer 1

如下更改代码，

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete) {
     print("clicking1")
        if let selfiePublicID = self.selfiePublicID {
            print("clicking2")
            let URL = "\(self.properties.host)\(self.properties.addComment)\(selfiePublicID)/action/2"
            print(URL)

            self.userParameters.profileParameters["value"] = self.comments[indexPath.row].commentText

            Alamofire.request(.DELETE, URL, parameters: self.userParameters.profileParameters, encoding: .JSON).validate().responseJSON { response in
                do {
                    let json = JSON(data: response.data!)
                    print(json)

                    self.comments.removeAtIndex(indexPath.row)
                    self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
                }
            }
        }
    }
}

希望这会运行。

Answer 2

当用户滑动时需要自定义操作时，将使用UITableViewRowAction。

当前，您在动作处理程序中拥有所有删除代码，由于从未显示过该动作，该代码从未执行。 对于这种特殊情况，您不需要执行操作，只需将其更新为

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.Delete) {
        print("1")
        print("clicking1")
        if let selfiePublicID = self.selfiePublicID {
            print("clicking2")
            let URL = "\(self.properties.host)\(self.properties.addComment)\(selfiePublicID)/action/2"
            print(URL)

            self.userParameters.profileParameters["value"] = self.comments[indexPath.row].commentText

            Alamofire.request(.DELETE, URL, parameters: self.userParameters.profileParameters, encoding: .JSON).validate().responseJSON { response in
                do {
                    let json = JSON(data: response.data!)
                    print(json)

                    self.comments.removeAtIndex(indexPath.row)
                    self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
                }
            }
        }
   }
}