Swift 5 RxDataSource可扩展细胞

Question

我想将可扩展的numberOfRownInSection.从默认的tableView传递给Rx，但是我发现无法正确使用Rx的问题

现在逻辑是..。当结构有标志isExpandable = false时，行计数为

我所拥有的是带有静态数据的tableView (struct将在下面提供)。HeaderView作为标题，单元作为可扩展的内容。

Toggle func:

func toggleCell(_ section: Int) {

    var indexPaths = [IndexPath]()

    for row in data[section].items.indices {
        let indexPath = IndexPath(row: row, section: section)
        indexPaths.append(indexPath)
    }

    let isExpanded = data[section].isExpanded
    data[section].isExpanded = !isExpanded

    if isExpanded {
        categoriesTableView.deleteRows(at: indexPaths, with: .none)
    } else {
        categoriesTableView.insertRows(at: indexPaths, with: .none)
    }

}

默认tableView委托：

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell: HomeViewCell = tableView.dequeueReusableCell(forIndexPath: indexPath)
    cell.categoryLabel.text = data[indexPath.section].items[indexPath.row].title ?? ""
    return cell
}

func numberOfSections(in tableView: UITableView) -> Int {
    return data.count
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if !data[section].isExpanded {
        return 0
    }

    return data[section].items.count
}

结构

var data: [CategoriesSectionData] = [CategoriesSectionData(header: "Elektro",            items: [CategoriesCellData(price: 12.99, title: "Gärtner 1"),
                                                                                                 CategoriesCellData(price: 15.30, title: "Gärtner 2"),
                                                                                                 CategoriesCellData(price: 25.99, title: "Gärtner 3")], isExpanded: false, icon: "home_menu_1"),
                                     CategoriesSectionData(header: "Gartenpflege",       items: [CategoriesCellData(price: 14.0, title: "Gärtner 1")], isExpanded: false, icon: "home_menu_2"),
                                     CategoriesSectionData(header: "Sanitär",            items: [], isExpanded: false, icon: "home_menu_3"),
                                     CategoriesSectionData(header: "Hausmeisterdienste", items: [], isExpanded: false, icon: "home_menu_4"),
                                     CategoriesSectionData(header: "Meisterprüfung",     items: [], isExpanded: false, icon: "home_menu_3"),
                                     CategoriesSectionData(header: "Gartenpflege",       items: [], isExpanded: false, icon: "home_menu_2"),
                                     CategoriesSectionData(header: "Sanitär",            items: [], isExpanded: false, icon: "home_menu_1"),
                                     CategoriesSectionData(header: "Hausmeisterdienste", items: [], isExpanded: false, icon: "home_menu_4")]

为了将此传递给Rx，我使用了下面的代码numberOfRownInSection，但是在插入/删除行时出现了错误，因为我不想清除，也不能将设置为不显示带有可扩展标志的单元格。

let dataSource = RxTableViewSectionedReloadDataSource<CategoriesSectionData>(
        configureCell: { ds, tv, indexPath, item in

            let cell: HomeViewCell = tv.dequeueReusableCell(forIndexPath: indexPath)
            cell.categoryLabel.text = item.title ?? ""
            return cell
        },

        titleForHeaderInSection: { ds, index in
            return ds.sectionModels[index].header
        }
    )

    self.dataSource = dataSource

    Observable.just(data)
        .bind(to: categoriesTableView.rx.items(dataSource: dataSource))
        .disposed(by: disposeBag)

    categoriesTableView.rx
        .setDelegate(self)
        .disposed(by: disposeBag)

Answer 1

尝试查看RxDataSources回购在GitHub上。关于如何做到这一点，有一个例子。您可以以Rx方式将cellViewModels绑定到tableview。