如何创建 RxSwift 风格的 TableViewController？
我正在尝试创建一个使用 RxSwift 并且没有任何部分的简单 TableViewController。
我已经广泛地查看并使用了https://github.com/ReactiveX/RxSwift/blob/master/RxExample/RxExample/Examples/TableView/TableViewController.swift。
我将代码缩减到只有一个部分并且只使用用户。但是，似乎我坚持使用 SectionModel。
//
// TableViewController.swift
// RxExample
//
// Created by carlos on 26/5/15.
// Copyright (c) 2015 Krunoslav Zaher. All rights reserved.
//
// modified by Mike Finney for a StackOverflow question
import UIKit
#if !RX_NO_MODULE
import RxSwift
import RxCocoa
#endif
class TableViewController: ViewController, UITableViewDelegate {
@IBOutlet weak var tableView: UITableView!
var disposeBag = DisposeBag()
let users = Variable([User]())
let dataSource = RxTableViewSectionedReloadDataSource<SectionModel<String, User>>()
typealias Section = SectionModel<String, User>
override func viewDidLoad() {
super.viewDidLoad()
self.navigationItem.rightBarButtonItem = self.editButtonItem()
users
.map { [ SectionModel(model: "ok", items: $0) ] }
.bindTo(tableView.rx_itemsWithDataSource(dataSource))
.addDisposableTo(disposeBag)
dataSource.cellFactory = { (tv, ip, user: User) in
let cell = tv.dequeueReusableCellWithIdentifier("Cell")!
cell.textLabel?.text = user.firstName + " " + user.lastName
return cell
}
// customization using delegate
// RxTableViewDelegateBridge will forward correct messages
tableView.rx_setDelegate(self)
.addDisposableTo(disposeBag)
tableView.rx_itemSelected
.subscribeNext { [unowned self] indexPath in
self.showDetailsForUserAtIndexPath(indexPath)
}
.addDisposableTo(disposeBag)
tableView.rx_itemDeleted
.subscribeNext { [unowned self] indexPath in
self.removeUser(indexPath)
}
.addDisposableTo(disposeBag)
RandomUserAPI.sharedAPI.getExampleUserResultSet()
.subscribeNext { [unowned self] array in
self.users.value = array
}
.addDisposableTo(disposeBag)
}
override func setEditing(editing: Bool, animated: Bool) {
super.setEditing(editing, animated: animated)
tableView.editing = editing
}
// MARK: Table view delegate ;)
func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 0
}
// MARK: Navigation
private func showDetailsForUserAtIndexPath(indexPath: NSIndexPath) {
let sb = UIStoryboard(name: "Main", bundle: NSBundle(identifier: "RxExample-iOS"))
let vc = sb.instantiateViewControllerWithIdentifier("DetailViewController") as! DetailViewController
vc.user = getUser(indexPath)
self.navigationController?.pushViewController(vc, animated: true)
}
// MARK: Work over Variable
func getUser(indexPath: NSIndexPath) -> User {
var array: [User]
switch indexPath.section {
case 0:
array = users.value
default:
fatalError("Section out of range")
}
return array[indexPath.row]
}
func moveUserFrom(from: NSIndexPath, to: NSIndexPath) {
var user: User
var fromArray: [User]
var toArray: [User]
fromArray = users.value
user = fromArray.removeAtIndex(from.row)
users.value = fromArray
toArray = users.value
toArray.insert(user, atIndex: to.row)
users.value = toArray
}
func addUser(user: User) {
var array = users.value
array.append(user)
users.value = array
}
func removeUser(indexPath: NSIndexPath) {
var array: [User]
switch indexPath.section {
case 0:
array = users.value
array.removeAtIndex(indexPath.row)
users.value = array
default:
fatalError("Section out of range")
}
}
}
如果我能提供帮助，我什至不想使用 SectionModel。
所以也许另一种问法是“什么是 RxTableViewSectionedReloadDataSource 的非节版本？”
