MultivaluedSection 的奇怪行为?

Strange behavior with MultivaluedSection?

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我用Eureka有一段时间了,太神奇了!!!

最近我在研究 MultivaluedSection,我写了一个简单的测试项目:它很简单 add/delete 来自 tableView 的人。

这里是代码,首先是模型:人物

struct Person:Equatable,CustomStringConvertible{
    var description: String{
        return "\(name) \(id)"
    }

    static func ==(lhs: Person, rhs: Person) -> Bool {
        return lhs.id == rhs.id
    }

    var id:String
    var name:String

    init(name:String){
        self.id = UUID().uuidString
        self.name = name
    }
}

VC 的下一个代码:

class ViewController: FormViewController {

    var people:[Person] = []

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        //hide delete button at row left
        tableView.isEditing = false
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let peopleSection = MultivaluedSection(multivaluedOptions:[.Delete,.Reorder,.Insert],header:"people")

        peopleSection.tag = "people"
        peopleSection.multivaluedRowToInsertAt = {idx in
            let newRow = LabelRow(){row in
                let person = Person(name: "h\(idx)")
                row.value = person.description
                self.people.append(person)

                let deleteAction = SwipeAction(style: .destructive, title: "DEL"){action,row,completion in
                    completion?(true)
                }
                row.trailingSwipe.actions = [deleteAction]
            }
            return newRow
        }

        peopleSection.addButtonProvider = {section in
            let addBtn = ButtonRow("add"){row in
                row.title = "new person"
            }
            return addBtn
        }

        form +++ peopleSection
    }
}

运行 app,如下图:

有2个问题:

1:你可以看到我加了3个人,然后按顺序删除,一切正常!但是当我再次添加人员时,发生了一些错误:似乎该部分的 header 被拉得很长。为什么???

2:我在tableView中添加人物时,标题不是left-aligned,这是为什么:

非常感谢!

请更新代码,

peopleSection.multivaluedRowToInsertAt = {idx in
    return LabelRow() {
        let person = Person(name: "h\(idx)")
        [=10=].title = person.description
        self.people.append(person)
    }
}

它会给你下面的输出,删除也能正常工作。

关于您的第一个问题:SwipeAction 实际上并没有从您的 table 中删除该行。为了使其正常工作,您可以像这样手动删除此行:

let deleteAction = SwipeAction(style: .destructive, title: "DEL") { action, row, completion in

    // Delete row:
    if let rowNum = row.indexPath?.row {
        row.section?.remove(at: rowNum)
    }

    completion?(true)
}
row.trailingSwipe.actions = [deleteAction]