{"id":4190,"date":"2020-07-09T14:54:38","date_gmt":"2020-07-09T05:54:38","guid":{"rendered":"http:\/\/redwing.moo.jp\/cocoa\/?p=4190"},"modified":"2020-07-09T14:57:07","modified_gmt":"2020-07-09T05:57:07","slug":"swiftui-%e5%80%8b%e4%ba%ba%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/redwing.moo.jp\/cocoa\/archives\/4190","title":{"rendered":"SwiftUI \u500b\u4eba\u30e1\u30e2"},"content":{"rendered":"

SwiftUI\u306e\u60c5\u5831\u3092\u307e\u3068\u3081\u307e\u3057\u305f\uff0e
\n\u6b63\u76f4\u30ad\u30e3\u30c3\u30c1\u30a2\u30c3\u30d7\u306f\u3081\u3093\u3069\u304f\u3055\u3044\u3067\u3059\u304c\uff0c\u5207\u308a\u6368\u3066\u3089\u308c\u306a\u3044\u7a0b\u5ea6\u306b\u6642\u4ee3\u306b\u3064\u3044\u3066\u884c\u304d\u307e\u3059\uff0e
\n\u3042\u308b\u7a0b\u5ea6\u6642\u4ee3\u306e\u65b9\u5411\u6027\u304c\u5b9a\u307e\u3063\u3066\u304b\u3089\uff0c\u6700\u77ed\u30eb\u30fc\u30c8\u3067\u3064\u3044\u3066\u884c\u304f\u3064\u3082\u308a\u3067\u3059\u304c\uff0cSwiftUI\u306b\u95a2\u3059\u308b\u4ed5\u69d8\u306e\u5909\u66f4\u70b9\u306f\uff0c\u307e\u3060\u307e\u3060\u3042\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\uff0e<\/p>\n

– \u6982\u8981\u306e\u628a\u63e1\u306b\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\uff0e
\nSwiftUI\u306e\u8003\u5bdf<\/a><\/p>\n

– \u30b3\u30fc\u30c9\u306e\u30b5\u30f3\u30d7\u30eb\u306b\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\uff0e
\nApple Developer – SwiftUI Tutorials
\nIntroducing SwiftUI<\/a>
\nFucking SwiftUI<\/a>
\n\u30ab\u30d4\u901a\u4fe1 SwiftUI<\/a><\/p>\n

– SwiftUI\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u3066\u3044\u308b\u3068\u898b\u6163\u308c\u306a\u3044 some<\/strong> \u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u6563\u898b\u3055\u308c\u307e\u3059\u304c\uff0cSwift 5.1 \u3067\u5c0e\u5165\u3055\u308c\u308b Opaque Result Type \u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\uff0e
\nSwift 5.1 \u306b\u5c0e\u5165\u3055\u308c\u308b Opaque Result Type \u3068\u306f\u4f55\u304b<\/a><\/p>\n

– \u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u306bSwiftUI\u3092\u7528\u3044\u308b\u969b\u306b\u306f\uff0c\u4e00\u90e8\u306e\u30d3\u30e5\u30fc\u304b\u3089\u5c0e\u5165<\/strong>\u3059\u308b\u3068\u3044\u3046\u306e\u304c\u73fe\u5b9f\u3060\u3068\u601d\u308f\u308c\u307e\u3059\uff0e
\n\u4e00\u90e8\u306e\u753b\u9762\u3060\u3051SwiftUI\u3092\u4f7f\u3044\u305f\u3044\u3068\u304d<\/a><\/p>\n

– Xcode11.4\u3092\u89e6\u3063\u3066\u3044\u3066\u898b\u6163\u308c\u306a\u3044 SceneDelegate.swift<\/strong> \u3068\u3044\u3046\u306e\u304c\u3042\u3063\u305f\u306e\u3067\uff0c\u8abf\u3079\u307e\u3059\uff0e
\nSwiftUI\u3092\u89e6\u3063\u3066\u5206\u304b\u3063\u305f\u3053\u3068\uff1a\u2460\u521d\u671f\u753b\u9762\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/a><\/p>\n

\u305d\u306e\u4ed6\uff0c\u898b\u305f\u3053\u3068\u304c\u306a\u304b\u3063\u305f\u5c5e\u6027\u306b\u3064\u3044\u3066\u3082\u307e\u3068\u3081\u307e\u3057\u305f\uff0e
\n\uff20State<\/strong>
\n– SwiftUI\u306eView\u306fstruct\u306e\u305f\u3081\uff0c\u901a\u5e38\u306e\u5024\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\uff0e@State\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u3067\uff0c\u30e1\u30e2\u30ea\u306e\u7ba1\u7406\u304cSwiftUI\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u59d4\u8b72\u3055\u308c\u3066\u5024\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\uff0e
\n– \uff20State\u3067\u5ba3\u8a00\u3055\u308c\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5b50View\u306b\u6e21\u3059\u6642\u306f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u540d\u306e\u982d\u306b$\u3092\u3064\u3051\u308b\uff0e\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3078\u306e\u53c2\u7167\u3092\u6e21\u3059\u30a4\u30e1\u30fc\u30b8.
\n– @State\u306f\uff0c\u5024\u3092\u30b3\u30d4\u30fc\u3059\u308b\uff0e<\/p>\n

\uff20ObservedObject<\/strong>
\n– \u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u306b\u5bfe\u3057\u3066\u306f\uff0c\uff20ObservedObject\u3092\u4f7f\u7528\u3059\u308b\uff0e
\n– @ObsevedObject\u306f\uff0cView \u306e\u5916\u90e8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u969b\u306b\u5229\u7528\u3059\u308b\uff0e
\n– @ObsevedObject \u306b@Published \u5c5e\u6027\u3092\u6301\u3064\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u7528\u610f\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5909\u5316\u304c\u3042\u308c\u3070\u305d\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5229\u7528\u3059\u308b View \u304c\u66f4\u65b0\u3055\u308c\u308b\uff0e<\/p>\n

@Binding<\/strong>
\n\u3010SwiftUI\u3011@State\u3068\u304b@Binding\u3066\u4f55<\/a><\/p>\n

– @Binding\u3092\u3064\u3051\u3066\u3084\u308b\u3068View\u9593\u3067\u306e\u53cc\u65b9\u5411\u306e\u30c7\u30fc\u30bf\u5171\u6709\u304c\u53ef\u80fd\u3068\u306a\u308b\uff0e
\n– \u5b50View\u5074\u3067\u306f\u3001@State\u3067\u306f\u306a\u304f@Binding\u3067\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5ba3\u8a00\u3059\u308b\uff0e
\n– \u81ea\u3089\u306f\u4fdd\u6709\u305b\u305a\u306b\u3001\u89aa\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u53c2\u7167\u3059\u308b\uff0e
\n– @Binding \u306f\u5b9f\u4f53\u3092\u4fdd\u6301\u305b\u305a\u3001\u53c2\u7167\u3057\u3066\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u306e\u5024\u3092\u5909\u66f4\u3059\u308b\uff0e
\n– \u5229\u7528\u3059\u308b\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u3092\u8907\u6570\u306b\u305b\u305a\u3001\u4e00\u3064\u306e\u6b63\u3057\u3044\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u306e\u307f\u3092\u53c2\u7167\u3057\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u4e0d\u5177\u5408\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\uff0e<\/p>\n

@Environment<\/strong>
\n– @EnvironmentObject\u3092\u4ed8\u4e0e\u3057\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u8907\u6570\u306eView\u3067\u5171\u901a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u53c2\u7167\u3059\u308b\uff0e(\u30a2\u30d7\u30ea\u5168\u4f53\u3067\u5171\u901a\u306e\u30d7\u30ed\u30d1\u30c6\u30a3)<\/p>\n

@ViewBuilder<\/strong>
\nSwiftUI\u306eViewBuilder\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u307f\u308b<\/a><\/p>\nFollow @redwing1300<\/a>