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[Pixnet] Swift blog 語法著色
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- Sep 28 Tue 2021 03:01
[Swift 5.5] Combine for UIKit with async / await
ViewModel:
import WebAPI
import MVVM
final class Page2ViewModel: ObservableObject, Refreshable, Updateable {
@Published var isUpdate: Bool = false
@Published private(set) var cellViewModels: [Page2CellViewModel] = []
@Published private(set) var model: MainApodModel? {
didSet {
guard let model = model else {
return
}
cellViewModels = model.result.map { Page2CellViewModel(model: $0) }
}
}
func refresh() {
isUpdate = true
let parameter = MainApodParameter()
Task { @MainActor in
do {
let model: MainApodModel = try await MainApodWebAPI().invokeAsync(parameter)
isUpdate = false
self.model = model
} catch let error {
print(error.localizedDescription)
isUpdate = false
}
}
}
}
ViewController:
- Sep 27 Mon 2021 00:51
[Swift 5.5] async / await 搭配 Value types MVVM
import WebAPI
import MVVM
struct Page2ViewModel: Refreshable, Updateable, MutatingClosure {
weak var binder: Binder?
var isUpdate: Bool = false
private(set) var cellViewModels: [Page2CellViewModel] = []
private(set) var model: MainApodModel? {
didSet {
guard let model = model else {
return
}
cellViewModels = model.result.map { Page2CellViewModel(model: $0) }
}
}
init(binder: Binder)
{
self.binder = binder
refresh()
}
mutating func refresh() {
isUpdate = true
let parameter = MainApodParameter()
let copySelf = self
Task { @MainActor in
do {
let model: MainApodModel = try await MainApodWebAPI().invokeAsync(parameter)
copySelf.mutating { (mutatingSelf: inout Page2ViewModel) in
mutatingSelf.isUpdate = false
mutatingSelf.model = model
}
} catch let error {
print(error.localizedDescription)
copySelf.mutating { (mutatingSelf: inout Page2ViewModel) in
mutatingSelf.isUpdate = false
}
}
}
}
}
await之後是callback，這樣想就可以跟之前的做法接起來
