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Três conceitos que farão a diferença nos seus apps
- 1. Três conceitos que farão a diferença nos seus apps
- 5. • Networking e storage • Diffing • Navegação entre telas
- 10. Abstração
- 11. Offline Controllers Fui usar o app em modo avião e olha no que deu
- 15. ViewController
- 16. ViewController
- 18. View Controller Data Provider Storage Controller API Client
- 19. API Client
- 20. View Controller Data Provider Storage Controller API Client
- 22. View Controller Data Provider Storage Controller API Client
- 23. Data Provider
- 24. View Controller Data Provider Storage Controller API Client
- 44. final class DataProvider { init(client: APIClient, storage: Storage) { self.client = client self.storage = storage } /// ... }
- 45. protocol APIClient { func searchUsers(query: String, completion: @escaping (Result<SearchResults<User>, APIError>) -> ()) func user(with login: String, completion: @escaping (Result<User, APIError>) -> ()) func repositories(by login: String, completion: @escaping (Result<[Repository], APIError>) -> ()) func repository(by login: String, named name: String, completion: @escaping (Result<Repository, APIError>) -> ()) func stargazers(for repositoryName: String, ownedBy login: String, completion: @escaping(Result<[User], APIError>) -> ()) }
- 46. protocol Storage: class { func store(users: [User], completion: ((StorageError?) -> ())?) func store(repositories: [Repository], completion: ((StorageError?) -> ())?) func searchUsers(with query: String) -> Observable<[User]> func user(withLogin login: String) -> Observable<User> func user(withId id: String) -> Observable<User> func repositories(by user: User) -> Observable<[Repository]> func repository(named name: String) -> Observable<Repository> func repository(withId id: String) -> Observable<Repository> func stargazers(for repository: Repository) -> Observable<[User]> }
- 47. Diffing Calculando diferenças entre coleções de models
- 48. struct Repository { let id: Int let name: String let owner: User let stars: Int }
- 49. id: 1 name: repoA owner: {insidegui} stars: 100 id: 2 name: repoB owner: {insidegui} stars: 200 let repositories: [Repository] 0 1
- 50. id: 1 name: repoA owner: {insidegui} stars: 102 id: 2 name: repoB owner: {insidegui} stars: 200 let repositories: [Repository] 0 1
- 51. id: 1 name: repoA owner: {insidegui} stars: 102 id: 2 name: repoB owner: {insidegui} stars: 200 difference = [.modified(0)] 0 1 id: 1 name: repoA owner: {insidegui} stars: 100 id: 2 name: repoB owner: {insidegui} stars: 200 0 1
- 52. id: 3 name: repoC owner: {insidegui} stars: 300 id: 2 name: repoB owner: {insidegui} stars: 200 let repositories: [Repository] 0 1
- 53. id: 3 name: repoC owner: {insidegui} stars: 300 id: 2 name: repoB owner: {insidegui} stars: 200 difference = [.deleted(0), .added(0)] 0 1 id: 1 name: repoA owner: {insidegui} stars: 102 id: 2 name: repoB owner: {insidegui} stars: 200 0 1 X
- 54. Levenshtein
- 56. let diff = IGListDiffPaths(0, 0, oldData, newData, .equality) tableView.beginUpdates() tableView.insertRows(at: diff.inserts, with: .automatic) tableView.deleteRows(at: diff.deletes, with: .automatic) tableView.reloadRows(at: diff.updates, with: .none) tableView.endUpdates()
- 57. extension UITableView { func reload(oldData: [IGListDiffable], newData: [IGListDiffable]) { let diff = IGListDiffPaths(0, 0, oldData, newData, .equality) beginUpdates() insertRows(at: diff.inserts, with: .automatic) deleteRows(at: diff.deletes, with: .automatic) reloadRows(at: diff.updates, with: .none) endUpdates() } }
- 58. Routers Conectando seus view controllers sem perder a sanidade
- 61. #comofas?
- 62. SEGUES
- 63. override func prepare(for segue: UIStoryboardSegue, sender: Any?) { if segue.identifier == "showRepositories" { if let vc = segue.destination as? RepositoriesViewController { vc.user = self.user } } }
- 64. init(provider: DataProvider, user: User, delegate: RepositoriesViewControllerDelegate) Dependency Injection
- 65. final class AppRouter { init(appLaunchOptions: [UIApplicationLaunchOptionsKey : Any]?) func showInitialViewController() func showRepositoriesViewController(for user: User) func showStargazersViewController(for repository: Repository) func showProfileViewController(for user: User, from presenting: UIViewController? = nil) } AppRouter.swift
- 66. class AppDelegate: UIResponder, UIApplicationDelegate { var router: AppRouter! func application(..., didFinishLaunching:...) -> Bool { router = AppRouter(appLaunchOptions: launchOptions) router.showInitialViewController() return true } }
- 67. func showInitialViewController() { if preferences.needsMigration { showMigrationViewController(with: "Migrating, please wait") storage.migrate(completion: showSearchViewController) } else { showSearchViewController() } }
- 68. extension AppRouter: UsersTableViewControllerDelegate { // ... } extension AppRouter: RepositoriesTableViewControllerDelegate { // ... }
- 69. override func tableView(..., didSelectRowAt...) { delegate?.usersTableViewController(self, didSelect: ...) }
- 70. func usersTableViewController(_ controller: ..., didSelect user: User) { if controller is SearchUsersViewController { showRepositoriesViewController(for: user) } else if controller is StargazersViewController { showProfileViewController(for: user) } }