Building 5 Calls for iOS

A talk I gave in Barcelona. About 1/3 political, 1/3 technical, and 1/3 tactical.

Transcript

1. Building
   

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2. Ben Scheirman
   benscheirman.com
   @subdigital
   

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3. ficklebits.com
   

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4. 260+ screencasts on iOS development
   nsscreencast.com
   

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8. What do we do?
   

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12. What do we do?
    

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13. What can we do?
    

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14. What can I do?
    

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17. United States Congress
    House of
    Representatives
    Senate
    435 Members 100 Members
    

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21. 5calls.org
    

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25. Launch ASAP
    

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27. Wanted it to be
    a GOOD iOS app
    

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29. github.com/5calls/ios
    

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31. Let people help you!
    

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33. Built on NSOperation
    Storyboards
    UITableView
    CocoaPods
    Vibrancy / Blur
    Dynamic Type
    Custom UIViewController
    Containment
    Local Push Notifications
    Fastlane
    Pantry
    Swift 3
    Universal app

    (split view)
    Fabric / Crashlytics
    R.swift
    Buddybuild
    

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34. NSOperations
    class BaseOperation : Operation {
    override var isAsynchronous: Bool {
    return true
    }
    

    private var _executing = false {
    willSet {
    willChangeValue(forKey: "isExecuting")
    }
    didSet {
    didChangeValue(forKey: "isExecuting")
    }
    }
    override var isExecuting: Bool {
    return _executing
    }
    private var _finished = false {
    willSet {
    willChangeValue(forKey: "isFinished")
    }
    didSet {
    didChangeValue(forKey: "isFinished")
    }
    }
    override var isFinished: Bool {
    return _finished
    }
    class BaseOperation : Operation {
    func execute() {
    fatalError("You must override this")
    }
    func finish() {
    _executing = false
    _finished = true
    }
    }
    

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35. NSOperations
    class FetchIssuesOperation : BaseOperation {
    let location: UserLocation?
    init(location: UserLocation?) {
    self.location = location
    }

    

    ...
    }
    

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36. NSOperations
    override func execute() {
    let task = session.dataTask(with: url) { 

    (data, response, error) in
    if let e = error {
    print("Error fetching issues: \
    (e.localizedDescription)”)
    } else {
    self.handleResponse(data: data,
    response: response)
    }
    self.finish()
    }
    task.resume()
    }
    

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37. NSOperations
    self.issuesList = IssuesList(dictionary: json)
    

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38. NSOperations
    func fetchIssues(completion: @escaping (IssuesLoadResult) -> Void) {
    let operation = FetchIssuesOperation(location: userLocation)
    operation.completionBlock = { [weak self, weak operation] in
    if let issuesList = operation?.issuesList {
    self?.issuesList = issuesList
    DispatchQueue.main.async {
    completion(.success)
    }
    } else {

    // …

    }

    

    }
    OperationQueue.main.addOperation(operation)
    }
    

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39. NSOperations
    FetchIssuesOperation
    FetchStatsOperation
    ReportOutcomeOperation
    

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40. NSOperations
    Composable
    Dependencies
    Cancellable
    Control Concurrency
    Quality of Service
    

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41. NSOperations
    https://developer.apple.com/videos/play/wwdc2015/226/
    WWDC Session 226 - Advanced NSOperations
    http://nsscreencast.com/
    NSScreencast Episodes 175-177, 180
    

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42. Dynamic Type
    Dynamic Type
    Dynamic Type
    

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43. Using a custom font
    made this more difficult
    

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46. Getting Dynamic Type to work
    with UITableViewCells
    Define height
    with constraints
    

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47. Getting Dynamic Type to work
    with UITableViewCells
    

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48. Respond to Dynamic Type
    Changes
    UIContentSizeCategoryDidChangeNotification
    adjustsFontsForContentSizeCategory
    iOS 10.0
    

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50. Getting dynamic fonts in code
    headline.font = UIFont.preferredFont(
    forTextStyle: UIFontTextStyleHeadline)
    subhead.font = UIFont.preferredFont(
    forTextStyle: UIFontTextStyleSubheadline)
    body.font = UIFont.preferredFont(
    forTextStyle: UIFontTextStyleBody)
    

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51. https://github.com/nickoneill/Pantry
    if let available: Bool = Pantry.unpack("promptAvailable") {
    completion(available: available)
    } else {
    anExpensiveOperationToDetermineAvailability({ (available) -> () in
    Pantry.pack(available, key: "promptAvailable",
    expires: .Seconds(60 * 10))
    completion(available: available)
    })
    }
    

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52. var autopersist: String? {
    set {
    if let newValue = newValue {
    Pantry.pack(newValue, key: "autopersist")
    }
    }
    get {
    return Pantry.unpack("autopersist")
    }
    }
    ...later...
    autopersist = "Hello!"
    // restart app, reboot phone, etc
    print(autopersist) // Hello!
    

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53. SIMPLE MODEL OBJECT…
    

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54. CONFORM TO STORABLE
    

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55. USAGE IS REALLY SIMPLE:
    

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56. CAREFUL YOU DON’T STORE
    USER DATA IN CACHES
    

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57. R.swift
    

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58. R.swift
    let icon = UIImage(named: "settings-icon")
    let icon = R.image.settingsIcon()
    becomes…
    

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59. R.swift
    let viewController = CustomViewController(nibName: "CustomView",
    bundle: nil)
    let viewController = CustomViewController(nib: R.nib.customView)
    becomes…
    

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60. R.swift
    let string = String(format:
    NSLocalizedString("welcome.withName", comment: ""), 

    locale: NSLocale.current, "Arthur Dent")
    let string = R.string.localizable.welcomeWithName("Arthur Dent")
    becomes…
    

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61. R.swift
    

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64. # Fastfile
    

    desc "Runs all the tests"
    lane :test do
    scan(workspace: workspace, scheme: scheme)
    end
    

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65. $ fastlane test
    

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66. desc "Increments build number"
    lane :increment_build do
    increment_build_number(xcodeproj: xcodeproj)
    end
    

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68. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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69. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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70. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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71. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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72. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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73. def prompt_for_release_notes
    `open changelog.txt -W`
    File.read('changelog.txt')
    end
    

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74. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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75. desc "Submit a new Beta Build to Apple TestFlight"
    lane :beta do
    ensure_git_status_clean
    increment_build
    commit_version_bump
    badge(shield: "Version-#{app_version}-red", shield_no_resize: true)
    gym(workspace: workspace, scheme: scheme)
    changelog = prompt_for_release_notes
    pilot(changelog: changelog)
    git_commit(path: 'fastlane/changelog.txt', message: 'Updated changelog.txt')
    reset_git_repo(files: app_icon_files)
    add_git_tag
    push_git_tags
    end
    

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76. Automatic Screenshots
    # Snapfile
    devices([

    "iPhone 7"

    "iPhone 7 Plus",

    "iPhone SE",

    "iPad Pro (12.9 inch)"

    ])
    languages(["en-US"])

    

    workspace "./FiveCalls/FiveCalls.xcworkspace"

    scheme "FiveCallsUITests"
    output_directory "./screenshots"

    clear_previous_screenshots true

    launch_arguments(["-hasShownWelcomeScreen false"])
    

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77. Automatic Screenshots
    

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78. Deterministic Data?
    How do we ALWAYS
    choose
    the same item, despite
    the server changing?
    

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79. Stubs!
    {

    “issues”: [

    … ] 

    }
    issues.json
    INTERNET
    GET /issues
    UI
    TESTING?
    YES
    NO
    

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82. SeededURLSession
    SeededDataTask
    dataTask(with:completion:)
    

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85. HOST
    APP
    TESTS
    ENV
    

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86. TESTS
    

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90. The Stats
    

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91. Week 1
    6,300 downloads
    

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94. Month 1
    76,916 downloads
    

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96. All Time (4/21/2017)
    105,000 downloads
    

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97. 44.2k Monthly Active Users
    2.4k Daily Active Users
    

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99. Over 1 million calls to congress
    

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100. Final Thoughts
     

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101. !
     

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102. Track Useful Analytics
     *but don’t be scummy
     

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106. REDMAP
     

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108. Software Development
     is an incredibly valuable skill.
     

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109. Software Development
     is an incredibly valuable skill.
     Use your powers for good, not evil.
     

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110. Ben Scheirman
     benscheirman.com
     @subdigital
     nsscreencast.com
     ¡Gracias!
     

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