Xamarin Λ࢖ͬͨ iOS ΞϓϦ։ൃͷݱ৔͔Β Ӊࠤݟެี Fenrir Inc.

Xamarin ͱ͸

Xamarin ͱ͸ • ෳ਺ͷϓϥοτϑΥʔϜʹରԠͨ͠ΞϓϦ։ൃ؀ڥ • iOS / Android / ... • .NET / Mono ϕʔε • C# Ͱ͢΂ͯͷίʔυ͕ॻ͚Δ • ʢC# Ҏ֎ʹ F# ΋࢖͑Δʣ

ωΠςΟϒΞϓϦ • ֤ OS ͷωΠςΟϒ API ͕࢖͑Δ • ωΠςΟϒ API ΁ͷ C# όΠϯσΟϯά • ֤ OS ͷωΠςΟϒ UI ͕࢖͑Δ • ͦΕҎ֎ʹ Xamarin.Forms ͱ͍͏બ୒ࢶ΋͋Δ • ֤ OS ͷωΠςΟϒΞϓϦ͕ϏϧυͰ͖Δ

ϓϥοτϑΥʔϜؒͷίʔυڞ௨Խ

࢖༻࣮੷

࣮ࡍʹ࢖ͬͯΈͯ

࣮ࡍʹ iOS ΞϓϦ։ൃͰ࢖ͬͯΈͯ • IDE • Storyboard • C#

IDE ˍ Storyboard

։ൃ؀ڥʢIDEʣ • બ୒ࢶ • Visual Studio for Mac • RiderʢJetBrains ੡ IDEʣ • Windows + Visual Studio

࣮ࡍͷ؀ڥ • Visual Studio for Mac Ͱͻͱͱ͓Γͷ͜ͱ͕Ͱ͖Δ • ίʔσΟϯά͸ Rider ΍ Windows ্ͷ VS ͷํָ͕ • ͨͩɺσόοά΍ Storyboard ฤूͳͲ͸ෆ͕҆͋Δ • ซ༻͸໘౗ͳͷͰɺ݁ہ VS for Mac Ͱશ෦΍͍ͬͯΔ

Xamarin.iOS ͱ Storyboard • Storyboard ্ʹ UIViewController Λஔ͘৔߹

Storyboard ฤू࣌ͷ໰୊ • VS for Mac Ͱ Storyboard Λฤू͢Δ৔߹ • ⭕ ৽͍͠ class ໊ΛೖΕΔͱɺclass ϑΝΠϧΛੜ੒ • ⭕ .designer.cs ϑΝΠϧͱͷ࿈ܞ • ❌ View ͷ഑ஔ่͕ΕΔ͜ͱ͕͋Δ • ❌ Auto Layout ͷ੍໿͕উखʹมΘΔ͜ͱ͕͋Δ

VS for Mac ͱ Xcode ͷซ༻ • ࠷ॳͷ࡞੒΍ .designer.cs ࿈ܞ͸ VS for Mac • View ഑ஔ΍ϨΠΞ΢τௐ੔͸ Xcodeʢ݁ہɺซ༻ঢ়ଶʣ

̘ˌ

̘ˌ • Swift / Kotlin ʹൺ΂Ε͹ݹ͍͕ɺݱࡏ΋ਐԽ͍ͯ͠Δ • ඪ४ͷݴޠػೳ͕༏Ε͍ͯΔ • namespace • event • async / await • Reactive • ͳͲ

event class Hoge { public event EventHandler HogeEvent; HogeEvent.Invoke(); // ΠϕϯτൃՐʢ಺ଆ͔ΒͷΈʣ } var hoge = new Hoge(); hoge.HogeEvent += ... // ΠϕϯτϋϯυϦϯάॲཧ

async / await async Task HogeAsync() { // Կ͔ͷඇಉظॲཧ } var result1 = Hoge1(); var result = await HogeAsync(); // ඇಉظॲཧ͕ऴΘΔͷΛ଴ͭ var result2 = Hoge2();

await ͰΞϥʔτͷϘλϯԡԼ଴ͪ var tcs = new TaskCompletionSource(); var alert = UIAlertController.Create(title, message, style); alert.AddAction(UIAlertAction.Create(name, style, action => { tcs.SetResult(true); // ϘλϯͷΞΫγϣϯͰ SetResult })); PresentViewController(alert, true, null); var result = await tcs.Task; // SetResult Λ଴ͭ

Reactive Extensions • ͍ΘΏΔ Rx • .NET ൃ঵ͷ΋ͷ͕֤ݴޠʹ޿·͍ͬͯΔ • Θ͟Θ͟ϥΠϒϥϦΛೖΕͣͱ΋ɺඪ४ͰରԠ͍ͯ͠Δͷ͕ڧ Έ • ҎԼͷϥΠϒϥϦΛೖΕΔͱΑΓศར • ReactiveProperty • ReactiveCommand

·ͱΊ

·ͱΊ • IDE ͸ Visual Studio for Mac • Storyboard ฤू͸ Xcode • ซ༻ঢ়ଶʹͳΔͷ͸΍΍໘౗ • C# ͸݁ߏศར