{"id":4251,"date":"2020-07-23T16:23:20","date_gmt":"2020-07-23T07:23:20","guid":{"rendered":"http:\/\/redwing.moo.jp\/cocoa\/?p=4251"},"modified":"2020-07-23T16:23:20","modified_gmt":"2020-07-23T07:23:20","slug":"rxswift-%e5%80%8b%e4%ba%ba%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/redwing.moo.jp\/cocoa\/archives\/4251","title":{"rendered":"RxSwift \u500b\u4eba\u30e1\u30e2"},"content":{"rendered":"

iOS \u30a2\u30d7\u30ea\u306e Reactive \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306f\uff0c\u6700\u7d42\u7684\u306b\u306f Apple \u8b39\u88fd\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u304c\uff0c\u4e16\u306e\u4e2d\u306b\u306f\u65e2\u306b RxSwift \u3092\u5229\u7528\u3057\u305f iOS \u30a2\u30d7\u30ea\u304c\u591a\u6570\u5b58\u5728\u3057\u306a\u304c\u3089\u3082\uff0c\u5b66\u7fd2\u30b3\u30b9\u30c8\u304c\u6bd4\u8f03\u7684\u9ad8\u3044\u5206\u91ce\u306e\u305f\u3081\uff0c\u958b\u767a\u30d5\u30a7\u30fc\u30ba\u5f8c\u306f\u30e1\u30f3\u30c6\u3067\u304d\u308b\u4eba\u304c\u304a\u3089\u305a\uff0c\u624b\u3064\u304b\u305a\u306b\u306a\u3063\u3066\u3044\u308b\u30a2\u30d7\u30ea\u3082\u6ca2\u5c71\u3042\u308b\u3068\u60f3\u50cf\u3057\u3066\u3044\u307e\u3059\uff0e<\/p>\n

\u6700\u521d\u306bRxSwift\u306b\u5165\u9580\u3057\u305f\u969b\u306b\u306f\uff0c\u6982\u5ff5\u3092\u628a\u63e1\u3059\u308b\u306e\u306b\u3068\u3066\u3082\u82e6\u52b4\u3057\u307e\u3057\u305f\uff0e
\n\u7406\u7531\u306f\uff0c\u4f53\u7cfb\u7684\u306b\u8aac\u660e\u3055\u308c\u305f\u8cc7\u6599\u304c\u898b\u3064\u3051\u3089\u308c\u305a\uff0c\u30cd\u30c3\u30c8\u306e\u65ad\u7247\u7684\u306a\u8cc7\u6599\u3092\u63a2\u3059\u3053\u3068\u304b\u3089\u59cb\u3081\u305f\u305f\u3081\uff0c\u6982\u8981\u306e\u628a\u63e1\u304c\u601d\u3044\u306e\u307b\u304b\u5927\u5909\u3067\u3042\u3063\u305f\u305f\u3081\u3067\u3059\uff0e<\/p>\n

\u500b\u4eba\u7684\u306a\u30e1\u30e2\u3067\u3059\u304c\uff0c\u6700\u521d\u306b\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u6982\u5ff5\uff0c\u7528\u8a9e\uff0c\u4f55\u5ea6\u3082\u898b\u8fd4\u3057\u305f\u3044\u53c2\u8003\u30da\u30fc\u30b8\u3092\u307e\u3068\u3081\u307e\u3059\uff0e<\/p>\n

\u25bc Rx \u3068\u306f\uff1f<\/strong>
\nRx(Reactive X)\u3068\u306f\uff0c\u300c\u30aa\u30d6\u30b6\u30fc\u30d0\u30d1\u30bf\u30fc\u30f3\u300d\u300c\u30a4\u30c6\u30ec\u30fc\u30bf\u30d1\u30bf\u30fc\u30f3\u300d\u300c\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u300d\u306e\u6982\u5ff5\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u62e1\u5f35\u30e9\u30a4\u30d6\u30e9\u30ea\uff0e
\nRx\u306e\u5c0e\u5165\u30e1\u30ea\u30c3\u30c8\u306f\uff0c\u300c\u5024\u306e\u5909\u5316\u3092\u691c\u77e5\u3067\u304d\u308b\u300d\u300c\u975e\u540c\u671f\u306e\u51e6\u7406\u3092\u7c21\u6f54\u306b\u66f8\u3051\u308b\u300d\u3053\u3068\uff0e
\n\u5024\u306e\u5909\u5316\u306b\u306f\uff0c\u5909\u6570\u5024\u306e\u5909\u5316\u3084UI\u306e\u5909\u5316\u3082\u542b\u307e\u308c\u308b\uff0e<\/p>\n

\u25bc Rx\u306e\u4e09\u8981\u7d20<\/strong>
\n– Observable
\n– Operator
\n– Scheduler<\/p>\n

\u25bc Reactive Programming \u6982\u8981<\/strong>
\nSwift\u3067Reactive Programming<\/a><\/p>\n

\u25bc RxSwift \u3067\u53c2\u8003\u306b\u306a\u3063\u305f\u8cc7\u6599<\/strong>
\nRxSwift\u306e\u6a5f\u80fd\u30ab\u30bf\u30ed\u30b0<\/a>
\n\u4ffa\u306f\u3053\u308c\u3067RxSwift\u3092\u5b66\u3093\u3060\uff01\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u96c6<\/a>
\n[RxSwift] shareReplay\u3092\u3061\u3083\u3093\u3068\u66f8\u3044\u3066\u304a\u884c\u5100\u826f\u304f\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u8cfc\u8aad\u3057\u3088\u3046<\/a>
\n[Rx\u5165\u9580] Subject\u8a73\u89e3 \/ Hot\u306a\u3001Cold\u306aObservable\u306e\u3053\u3068<\/a>
\nRxSwift\u306eobserveOn\u3068subscribeOn\u3092\u7406\u89e3\u3059\u308b \/\/ Speaker Deck<\/a>
\n\u3088\u304f\u4f7f\u3044\u305d\u3046\u306aRxSwift\u306e\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u306e\u52c9\u5f37\u3092\u3057\u3066\u307f\u305f\uff08flatMap, flatMapFirst, flatMapLatest \u7b49\uff09<\/a>
\nRxSwift \u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9<\/a>
\n\u2192 observeOn\uff0csubscribeOn \u306e\u9055\u3044\u306b\u3064\u3044\u3066\u53c2\u8003\u306b\u306a\u3063\u305f\uff0e
\nRxSwift4\u3067\u5ec3\u6b62\u306b\u306a\u3063\u305f Variable \u306e\u30ea\u30d7\u30ec\u30a4\u30b9<\/a><\/p>\n

\u25bc \u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9<\/strong>
\nRxExample MVVM \u306e\u305d\u306e\u5148\u3078\uff08Fat ViewModel \u306e\u5012\u3057\u65b9\uff09<\/a>
\nRxSwift\u3068UI\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8868\u73fe\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u30b5\u30f3\u30d7\u30eb\u7d39\u4ecb<\/a>
\n\u30ea\u30d0\u30fc\u30b9\u30fb\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0 – RxSwift<\/a><\/p>\n

\u25bc \u7528\u8a9e \u306b\u3064\u3044\u3066<\/strong>
\nObservable<\/strong> \u30a4\u30d9\u30f3\u30c8\u767a\u751f\u5143
\nObserver<\/strong> \u30a4\u30d9\u30f3\u30c8\u51e6\u7406<\/p>\n

\u25bc Observable \u306e\u7834\u68c4<\/strong>
\n– disposeBag\u3067\u7834\u68c4\u3059\u308b\uff0e
\n– subscribe\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024Disposable\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u5bfe\u3057\u3066dispose()\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u65b9\u6cd5\uff0e<\/p>\n

\u25bc Driver\/Signal<\/strong>
\n– Driver <\/strong>
\nsubscribe()\u5f8c\uff0c\u30a4\u30d9\u30f3\u30c8\u30921\u3064\u6d41\u3057\u3066\u307b\u3057\u3044\u5834\u5408\u306b\u4f7f\u7528\u3059\u308b\uff0e
\n(UITextField \u306e\u5165\u529b\u6587\u5b57\u5217\uff0cUIButton \u306e\u6709\u52b9\/\u7121\u52b9\u72b6\u614b\u306a\u3069\uff09
\n– Signal<\/strong>
\nsubscribe()\u5f8c\uff0c\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3059\u308b\u307e\u3067\uff0c\u30a4\u30d9\u30f3\u30c8\u3092\u6d41\u3055\u306a\u3044\u3067\u6b32\u3057\u3044\u5834\u5408\u306b\u4f7f\u7528\u3059\u308b\uff0e
\n\uff08UIButton \u306e\u30bf\u30c3\u30d7\u30a4\u30d9\u30f3\u30c8\uff0c\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306e\u5b8c\u4e86\u30a4\u30d9\u30f3\u30c8\u306a\u3069\uff09<\/p>\n

\u25bc Hot\/Cold<\/strong>
\nSubject \u304b\u3089\u9001\u51fa\u3055\u308c\u308b\u5024\u304c\u300cHot\u300d\uff0c\u305d\u308c\u4ee5\u5916\u304c\u300cCold\u300d\uff0e
\nCold \u3092 Hot \u306b\u5909\u63db\u3059\u308b\u306b\u306f\uff0c\u4ee5\u4e0b\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\uff0e
\nPublish()\u30e1\u30bd\u30c3\u30c9\u306f\uff0cHot \u5909\u5316\u30aa\u30da\u30ec\u30fc\u30bf\uff0eConnect()\u30e1\u30bd\u30c3\u30c9\u306f\uff0c\u30b9\u30c8\u30ea\u30fc\u30e0\u958b\u59cb\uff0e<\/p>\n

– share(replay: 1)\u306f\uff0cCold Observable \u3092 Hot Observable \u3078\u5909\u63db\u3059\u308b\u305f\u3081\u306e\u30aa\u30da\u30ec\u30fc\u30bf\uff0e<\/p>\n

\u25bc Hot \u306a Observable \u306e\u7279\u5fb4<\/strong>
\n– subscribe \u3055\u308c\u306a\u304f\u3066\u3082\u52d5\u4f5c\u3059\u308b
\n– \u8907\u6570\u306e\u7b87\u6240\u3067 subscribe \u3057\u305f\u3068\u304d\u3001\u5168\u3066\u306e Observable \u3067\u540c\u3058\u30a4\u30d9\u30f3\u30c8\u304c\u540c\u6642\u306b\u6d41\u308c\u308b\uff0e<\/p>\n

\u25bc Cold \u306a Observable \u306e\u7279\u5fb4<\/strong>
\n– subscribe \u3057\u305f\u3068\u304d\u306b\u52d5\u4f5c\u3059\u308b
\n– \u5358\u4f53\u3067\u306f\u610f\u5473\u304c\u306a\u3044
\n– \u8907\u6570\u306e\u7b87\u6240\u3067 subscribe \u3057\u305f\u6642\uff0c\u305d\u308c\u305e\u308c\u306e Observable \u3067\u305d\u308c\u305e\u308c\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u6d41\u308c\u308b\uff0e<\/p>\n

\u25bc Subject\/Relay<\/strong>
\n– Subject<\/strong>\u300c\u901a\u4fe1\u51e6\u7406\u3084 DB \u51e6\u7406\u7b49\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u3068\u304d\u306b\u305d\u306e\u5185\u5bb9\u306b\u3088\u3063\u3066\u51e6\u7406\u3092\u5206\u5c90\u3055\u305b\u305f\u3044
\n– Relay<\/strong> UI \u306b\u5024\u3092 Bind \u3059\u308b
\n– PublishSubject
\n– BehaviorSubject
\n– PublishRelay
\n– BehaviorRelay<\/p>\nFollow @redwing1300<\/a>