Add examples project

This commit is contained in:
Ivan Vorobei
2019-06-06 11:16:28 +03:00
parent 86fe2d7323
commit b866885a44
962 changed files with 45026 additions and 5 deletions

21
Examples/Combine using GitHub API/.gitignore vendored Executable file
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.DS_Store
*/build/*
*.pbxuser
!default.pbxuser
*.mode1v3
!default.mode1v3
*.mode2v3
!default.mode2v3
*.perspectivev3
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DerivedData
.idea/
*.hmap
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*.moved-aside
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The MIT License (MIT)
Copyright (c) 2019 ra1028
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# SwiftUI-Combine-Example
This is an example project of [SwiftUI](https://developer.apple.com/xcode/swiftui) and [Combine](https://developer.apple.com/documentation/combine) using GitHub `GET /search/users` API.
<p align="center">
<img src="./assets/sample.png" width="250">
</p>
## :clipboard: Requirements
- Swift5.1 Beta
- Xcode11.0 Beta
- iOS 13.0 Beta
## :warning: GitHub API Rate Limiting
GitHub search API has a [rate limit rules](https://developer.github.com/v3/search/#rate-limit).
For unauthenticated requests, the rate limit allows you to make up to 10 requests per minute.
## :books: Credit
- [Official SwiftUI Tutorial](https://developer.apple.com/tutorials/swiftui)
- [Combine Apple Developer Document](https://developer.apple.com/documentation/combine)

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<?xml version="1.0" encoding="UTF-8"?>
<Workspace
version = "1.0">
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<?xml version="1.0" encoding="UTF-8"?>
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import Combine
final class AnySubscription: Subscription {
private let cancellable: Cancellable
init(_ cancel: @escaping () -> Void) {
cancellable = AnyCancellable(cancel)
}
func request(_ demand: Subscribers.Demand) {}
func cancel() {
cancellable.cancel()
}
}

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import UIKit
@UIApplicationMain
final class AppDelegate: UIResponder, UIApplicationDelegate {}

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}

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<dependencies>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--View Controller-->
<scene sceneID="EHf-IW-A2E">
<objects>
<viewController id="01J-lp-oVM" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
<viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="53" y="375"/>
</scene>
</scenes>
</document>

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import SwiftUI
import Combine
enum RequestError: Error {
case request(code: Int, error: Error?)
case unknown
}
extension URLSession {
func send(request: URLRequest) -> AnyPublisher<(data: Data, response: HTTPURLResponse), RequestError> {
AnyPublisher<(data: Data, response: HTTPURLResponse), RequestError> { subscriber in
let task = self.dataTask(with: request) { data, response, error in
DispatchQueue.main.async {
let httpReponse = response as? HTTPURLResponse
if let data = data, let httpReponse = httpReponse, 200..<300 ~= httpReponse.statusCode {
_ = subscriber.receive((data, httpReponse))
subscriber.receive(completion: .finished)
}
else if let httpReponse = httpReponse {
subscriber.receive(completion: .failure(.request(code: httpReponse.statusCode, error: error)))
}
else {
subscriber.receive(completion: .failure(.unknown))
}
}
}
subscriber.receive(subscription: AnySubscription(task.cancel))
task.resume()
}
}
}
extension JSONDecoder: TopLevelDecoder {}

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>$(DEVELOPMENT_LANGUAGE)</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>UIApplicationSceneManifest</key>
<dict>
<key>UIApplicationSupportsMultipleScenes</key>
<false/>
<key>UISceneConfigurations</key>
<dict>
<key>UIWindowSceneSessionRoleApplication</key>
<array>
<dict>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UISceneConfigurationName</key>
<string>Default Configuration</string>
<key>UISceneDelegateClassName</key>
<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
</dict>
</array>
</dict>
</dict>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIRequiredDeviceCapabilities</key>
<array>
<string>armv7</string>
</array>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationPortraitUpsideDown</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
</dict>
</plist>

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{
"info" : {
"version" : 1,
"author" : "xcode"
}
}

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import UIKit
import SwiftUI
final class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
let window = UIWindow(frame: UIScreen.main.bounds)
window.rootViewController = UIHostingController(
rootView: SearchUserView().environmentObject(SearchUserViewModel())
)
self.window = window
window.makeKeyAndVisible()
}
}

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import SwiftUI
struct SearchUserBar: View {
@Binding var text: String
@State var action: () -> Void
var body: some View {
ZStack {
HStack {
TextField(
$text,
placeholder: Text("Search User")
.color(Color.gray)
)
.padding([.leading, .trailing], 8)
.frame(height: 32)
.background(Color.white.opacity(0.4))
.cornerRadius(8)
Button(
action: action,
label: { Text("Search") }
)
.foregroundColor(Color.white)
}
.padding([.leading, .trailing], 16)
}
.frame(height: 64)
.background(Color.yellow)
}
}

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struct SearchUserResponse: Decodable {
var items: [User]
}

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import SwiftUI
struct SearchUserRow: View {
@EnvironmentObject var viewModel: SearchUserViewModel
@State var user: User
var body: some View {
HStack {
self.viewModel.userImages[user].map { image in
Image(uiImage: image)
.frame(width: 44, height: 44)
.aspectRatio(contentMode: .fit)
.clipShape(Circle())
.overlay(Circle().stroke(Color.gray, lineWidth: 1))
}
Text(user.login)
.font(Font.system(size: 18).bold())
Spacer()
}
.padding(EdgeInsets(top: 8, leading: 16, bottom: 8, trailing: 16))
.frame(height: 60)
.onAppear { self.viewModel.getImage(for: self.user) }
}
}

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import SwiftUI
struct SearchUserView: View {
@EnvironmentObject var viewModel: SearchUserViewModel
@State var text = "ra1028"
var body: some View {
NavigationView {
VStack {
SearchUserBar(text: $text) {
self.viewModel.search(name: self.text)
}
List(viewModel.users) { user in
SearchUserRow(user: user)
.tapAction { print(user) }
}
}
.navigationBarTitle(Text("Users"))
}
}
}

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import SwiftUI
import Combine
final class SearchUserViewModel: BindableObject {
var didChange = PassthroughSubject<SearchUserViewModel, Never>()
private(set) var users = [User]() {
didSet {
didChange.send(self)
}
}
private(set) var userImages = [User: UIImage]() {
didSet {
didChange.send(self)
}
}
private var cancellable: Cancellable? {
didSet { oldValue?.cancel() }
}
func search(name: String) {
guard !name.isEmpty else {
return users = []
}
var urlComponents = URLComponents(string: "https://api.github.com/search/users")!
urlComponents.queryItems = [
URLQueryItem(name: "q", value: name)
]
var request = URLRequest(url: urlComponents.url!)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
let assign = Subscribers.Assign(object: self, keyPath: \.users)
cancellable = assign
URLSession.shared.send(request: request)
.map { $0.data }
.decode(type: SearchUserResponse.self, decoder: JSONDecoder())
.map { $0.items }
.replaceError(with: [])
.receive(subscriber: assign)
}
func getImage(for user: User) {
guard case .none = userImages[user] else {
return
}
let request = URLRequest(url: user.avatar_url)
URLSession.shared.send(request: request)
.map { UIImage(data: $0.data) }
.replaceError(with: nil)
.eraseToAnyPublisher()
.receive(subscriber: Subscribers.Sink<AnyPublisher<UIImage?, Never>> { [weak self] image in
self?.userImages[user] = image
})
}
}

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import Foundation
import SwiftUI
struct User: Hashable, Identifiable, Decodable {
var id: Int64
var login: String
var avatar_url: URL
}

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