- 谈谈个人对这三种架构的理解，本文实现最简单的案例。为了看清逻辑结构，MVVM封装的部分没有考虑内存问题。
-
如上图，需要一个点击事件和一个数据刷新。
-
MVC 实现
UserViewController.swift
// MARK: - 监听事件
extension UserViewController {
// 1.监听事件
private func setupAction() {
userView.getInfo.addClick(on: self) { (self) in
self.getUserInfo()
}
}
// 2.处理事件、业务逻辑、刷新UI
private func getUserInfo() {
let user = User(name: "张三", age: Int(arc4random()) % 30)
userView.configInfo(user)
}
}- MVP 实现
UserViewController1.swift
// MARK: - 监听事件
extension UserViewController1: Userview1Protoco {
// 1.将事件转交给 presenter 处理
private func setupAction() {
userView.getInfo.addClick(on: self) { (self) in
self.presenter.getUserInfo()
}
}
// 2.实现 presenter 刷新数据的协议
func refreshData(_ data: UserViewData) {
userView.configInfo(data)
}
}
------------------------
// 数据处理
struct ViewData: UserViewData {
let user: User
var name: String { return "姓名：" + user.name }
var age: String { return "年龄：\(user.age)" }
}
/// Presenter:
/// 1.负责处理业务逻辑
/// 2.负责将处理好的数据，调用刷新UI的协议
class UserView1Presenter {
private weak var delegate: Userview1Protoco?
init(delegate: Userview1Protoco) {
self.delegate = delegate
}
// 1.提供 UI 处理能力， 处理业务逻辑
public func getUserInfo() {
let user = User(name: "李四", age: Int(arc4random()) % 30)
// 2. 拿到数据，处理将数据，调用刷新协议
delegate?.refreshData(ViewData(user: user))
}
}- MVVM 实现
UserViewController2.swift
// MARK: - 绑定信号
extension UserViewController2 {
private func bind() {
/// 1.获取点击信号
let input = userView.getInfo.rx.tap()
/// 2.交给 VM 处理信号
let output = vm.transfom(input)
/// 3.将结果绑定到UIView上
self.userView.bind(output)
}
}
----------------------------
UserViewModel.swift
class UserViewModel {
typealias Input = Observable<Void>
typealias Output = Observable<UserViewData2>
private(set) var input: Input?
public var output: Output?
public func transfom(_ input: Input) -> Output {
self.input = input
self.output = Output(value: ViewData2(user: User(name: "", age: 0)))
/// 1.处理业务逻辑
input.subscrib(fireNow: false) {[weak self] _ in
let user = User(name: "张三", age: Int(arc4random()) % 30)
self?.output?.value = ViewData2(user: user)
}
/// 2.返回处理结果信号
return output!
}
}