{"id":135,"date":"2026-04-01T08:00:00","date_gmt":"2026-03-31T23:00:00","guid":{"rendered":"https:\/\/classlab.co.jp\/engineer\/blog\/flutter-google-maps-real-estate-app-2\/"},"modified":"2026-04-01T08:00:00","modified_gmt":"2026-03-31T23:00:00","slug":"flutter-google-maps-real-estate-app-2","status":"publish","type":"post","link":"https:\/\/classlab.co.jp\/engineer\/blog\/flutter-google-maps-real-estate-app-2\/","title":{"rendered":"Flutter\u00d7Maps\u3067\u7269\u4ef6\u30a2\u30d7\u30ea\u30923\u30f6\u6708\u3067\u51fa\u3057\u305f\u8a2d\u8a08\u5224\u65ad"},"content":{"rendered":"
\n

ClassLab Engineering \u306e Dev \u30c1\u30fc\u30e0\u30e1\u30f3\u30d0\u30fc\u304c\u57f7\u7b46\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/blockquote>\n

\u300c\u4e0d\u52d5\u7523\u30a2\u30d7\u30ea\u306e\u5730\u56f3\u3001\u306a\u305c\u3053\u3093\u306a\u306b\u91cd\u3044\u306e\uff1f\u300d\u2014\u2014\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u6700\u521d\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u304c\u3053\u308c\u3067\u3057\u305f\u3002<\/p>\n

ClassLab\u306f\u4e0d\u52d5\u7523\u7269\u4ef6\u691c\u7d22\u30a2\u30d7\u30ea\u300cRIRIFE\u300d\u3092Flutter\u00d7Google Maps\u3067\u958b\u767a\u3057\u3001iOS\/Android\u4e21\u30b9\u30c8\u30a2\u3067\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u5730\u56f3\u30d9\u30fc\u30b9\u306e\u7269\u4ef6\u691c\u7d22\u30a2\u30d7\u30ea\u3092Flutter + Google Maps SDK<\/strong>\u3067\u69cb\u7bc9\u3059\u308b\u969b\u306b\u76f4\u9762\u3057\u305f\u6280\u8853\u7684\u8ab2\u984c\u3068\u3001\u305d\u308c\u305e\u308c\u306e\u8a2d\u8a08\u5224\u65ad\u3092\u516c\u958b\u3057\u307e\u3059\u3002<\/p>\n

\u300cFlutter\u3067\u30cd\u30a4\u30c6\u30a3\u30d6\u5730\u56f3\u3092\u4f7f\u3044\u305f\u3044\u304c\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4e0d\u5b89\u300d\u300c\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u5730\u56f3\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u77e5\u308a\u305f\u3044\u300d\u2014\u2014\u305d\u3093\u306a\u65b9\u306b\u5411\u3051\u3066\u66f8\u304d\u307e\u3057\u305f\u3002<\/p>\n

—<\/p>\n

1. \u80cc\u666f \u2014 \u306a\u305cFlutter\u00d7Google Maps\u3092\u9078\u3093\u3060\u304b<\/h2>\n

\u30d7\u30ed\u30c0\u30af\u30c8\u306e\u8981\u4ef6<\/h3>\n

ClassLab\u306f\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\uff08\u96fb\u6c17\u30fb\u30ac\u30b9\uff09\u306e\u53d6\u6b21\u4e8b\u696d\u304c\u57fa\u76e4\u3067\u3059\u304c\u3001\u53d6\u6b21\u3067\u7bc9\u3044\u305f\u4e0d\u52d5\u7523\u4f1a\u793e\u3068\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u6d3b\u304b\u3057\u3001\u4e0d\u52d5\u7523\u30c6\u30c3\u30af\u9818\u57df\u306b\u3082\u4e8b\u696d\u3092\u62e1\u5f35\u3057\u3066\u3044\u307e\u3059\u3002RIRIFE\u306f\u305d\u306e\u7b2c\u4e00\u5f3e\u3068\u3057\u3066\u958b\u767a\u3057\u305f\u7269\u4ef6\u691c\u7d22\u30a2\u30d7\u30ea\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u5730\u56f3\u4e0a\u3067\u7269\u4ef6\u3092\u63a2\u3057\u3001\u6c17\u306b\u306a\u308b\u7269\u4ef6\u306e\u8a73\u7d30\u3092\u95b2\u89a7\u30fb\u554f\u3044\u5408\u308f\u305b\u3067\u304d\u307e\u3059\u3002\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u65b0\u898f\u4e8b\u696d\u306e\u7acb\u3061\u4e0a\u3052\u304b\u3089\u30b9\u30c8\u30a2\u516c\u958b\u307e\u3067\u4e00\u6c17\u901a\u8cab\u3067\u643a\u308f\u308c\u308b\u306e\u306f\u3001\u5c11\u4eba\u6570\u30c1\u30fc\u30e0\u306a\u3089\u3067\u306f\u306e\u74b0\u5883\u3067\u3059\u3002<\/p>\n

\u4e3b\u8981\u306a\u6280\u8853\u8981\u4ef6:<\/p>\n

    \n
  • \u5730\u56f3\u4e0a\u306b\u6570\u767e\u301c\u6570\u5343\u4ef6\u306e\u7269\u4ef6\u30de\u30fc\u30ab\u30fc\u3092\u8868\u793a<\/strong><\/li>\n
  • \u73fe\u5728\u5730\u5468\u8fba\u306e\u7269\u4ef6\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u691c\u7d22<\/strong><\/li>\n
  • \u7269\u4ef6\u753b\u50cf\u306e\u30b9\u30e0\u30fc\u30ba\u306a\u30b9\u30af\u30ed\u30fc\u30eb\u8868\u793a<\/strong><\/li>\n
  • iOS\/Android\u4e21\u5bfe\u5fdc<\/strong>\uff08\u958b\u767a\u30ea\u30bd\u30fc\u30b9\u3092\u8003\u3048\u308b\u30681\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u304c\u5fc5\u9808\uff09<\/li>\n
  • \u30ea\u30ea\u30fc\u30b9\u307e\u30673\u30f6\u6708<\/strong>\uff08MVP\uff09<\/li>\n

    \u6280\u8853\u9078\u5b9a: \u306a\u305cFlutter\u304b<\/h3>\n

    | \u5019\u88dc | iOS\/Android\u4e21\u5bfe\u5fdc | \u5730\u56f3SDK | \u958b\u767a\u901f\u5ea6 | \u30c1\u30fc\u30e0\u7d4c\u9a13 | \u9078\u5b9a |
    \n|——|—————–|———|———|———-|——|
    \n| React Native | \u25cb | react-native-maps | \u901f | \u306a\u3057 | \u00d7 |
    \n| Flutter | \u25cb | google_maps_flutter | \u901f | 1\u540d\u7d4c\u9a13\u3042\u308a | **\u63a1\u7528** |
    \n| Swift + Kotlin | \u30cd\u30a4\u30c6\u30a3\u30d6\u5404 | \u6700\u9ad8\u54c1\u8cea | \u9045\uff082\u500d\u5de5\u6570\uff09 | \u306a\u3057 | \u00d7 |
    \n| Kotlin Multiplatform | \u25b3\uff08UI\u5171\u6709\u9650\u5b9a\uff09 | \u30cd\u30a4\u30c6\u30a3\u30d6 | \u4e2d | \u306a\u3057 | \u00d7 |<\/p>\n

    \u6c7a\u3081\u624b\u306f2\u3064\u3002\u30c1\u30fc\u30e0\u5185\u306bFlutter\u7d4c\u9a13\u8005\u304c1\u540d\u3044\u305f\u3053\u3068<\/strong>\u3068\u3001google_maps_flutter\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u6210\u719f\u5ea6<\/strong>\u3067\u3059\u3002React Native\u306ereact-native-maps\u3082\u5019\u88dc\u3067\u3057\u305f\u304c\u3001Google Maps SDK\u306e\u30e9\u30c3\u30d1\u30fc\u3068\u3057\u3066\u306e\u5b8c\u6210\u5ea6\u306fFlutter\u306e\u65b9\u304c\u9ad8\u304f\u3001\u30ab\u30b9\u30bf\u30e0\u30de\u30fc\u30ab\u30fc\u3084\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u5145\u5b9f\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n

    \u30cd\u30a4\u30c6\u30a3\u30d6\uff08Swift + Kotlin\uff09\u306f\u54c1\u8cea\u9762\u3067\u6700\u5584\u3067\u3059\u304c\u3001\u30a8\u30f3\u30b8\u30cb\u30a21\u301c2\u540d\u30673\u30f6\u6708\u306eMVP\u30ea\u30ea\u30fc\u30b9\u306b\u306f\u5de5\u6570\u304c\u5408\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n

    —<\/p>\n

    2. \u8ab2\u984c \u2014 \u5730\u56f3\u30a2\u30d7\u30ea\u7279\u6709\u306e5\u3064\u306e\u58c1<\/h2>\n

    | # | \u8ab2\u984c | \u5f71\u97ff | \u6280\u8853\u7684\u306a\u58c1 |
    \n|—|——|——|———–|
    \n| 1 | \u30de\u30fc\u30ab\u30fc\u5927\u91cf\u8868\u793a\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9 | \u9ad8 | \u6570\u5343\u4ef6\u306e\u30de\u30fc\u30ab\u30fc\u3067\u5730\u56f3\u304c\u30d5\u30ea\u30fc\u30ba |
    \n| 2 | Platform View \u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30b3\u30b9\u30c8 | \u9ad8 | Flutter \u00d7 \u30cd\u30a4\u30c6\u30a3\u30d6\u5730\u56f3\u306e\u63cf\u753b\u7af6\u5408 |
    \n| 3 | \u5730\u56f3\u64cd\u4f5c\u3068\u7269\u4ef6\u30ea\u30b9\u30c8\u306e\u9023\u52d5 | \u4e2d | \u30b9\u30af\u30ed\u30fc\u30eb\u30fb\u30ba\u30fc\u30e0\u6642\u306e\u30ea\u30b9\u30c8\u66f4\u65b0\u30bf\u30a4\u30df\u30f3\u30b0 |
    \n| 4 | \u753b\u50cf\u306e\u9045\u5ef6\u8aad\u307f\u8fbc\u307f | \u4e2d | \u7269\u4ef6\u753b\u50cf\u304c\u591a\u304f\u30e1\u30e2\u30ea\u5727\u8feb |
    \n| 5 | \u30aa\u30d5\u30e9\u30a4\u30f3\u5bfe\u5fdc | \u4f4e | \u5730\u4e0b\u9244\u30fb\u30a8\u30ec\u30d9\u30fc\u30bf\u30fc\u5185\u3067\u5730\u56f3\u304c\u771f\u3063\u767d |<\/p>\n

    \u7279\u306b\u8ab2\u984c1\u30682\u306f\u76f8\u4e92\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002Google Maps SDK\u306fPlatform View\uff08\u30cd\u30a4\u30c6\u30a3\u30d6\u30d3\u30e5\u30fc\uff09\u3068\u3057\u3066Flutter\u306b\u7d44\u307f\u8fbc\u307e\u308c\u308b\u305f\u3081\u3001Flutter\u5074\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u30c4\u30ea\u30fc\u3068\u306f\u7570\u306a\u308b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30d1\u30b9\u3092\u901a\u308a\u307e\u3059\u3002\u30de\u30fc\u30ab\u30fc\u304c\u5897\u3048\u308b\u3068Platform View\u306e\u63cf\u753b\u8ca0\u8377\u304c\u4e0a\u304c\u308a\u3001Flutter\u5074\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\uff08\u30dc\u30c8\u30e0\u30b7\u30fc\u30c8\u306e\u30b9\u30e9\u30a4\u30c9\u7b49\uff09\u304c\u30ab\u30af\u3064\u304f\u539f\u56e0\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

    —<\/p>\n

    3. \u8a2d\u8a08 \u2014 \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u4e3b\u8981\u306a\u8a2d\u8a08\u5224\u65ad<\/h2>\n

    \u5168\u4f53\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/h3>\n
    graph TD\n    subgraph Client[\"Flutter App\"]\n        UI[UI Layer<br\/>BLoC + Riverpod]\n        MAP[Google Maps<br\/>Platform View]\n        REPO[Repository Layer<br\/>Dio]\n        CACHE[HTTP Cache<br\/>dio_cache_interceptor]\n    end\n\n    subgraph Backend[\"Backend API\"]\n        API[REST API<br\/>FastAPI]\n        DB[(PostgreSQL<br\/>+ PostGIS)]\n        SEARCH[\u7a7a\u9593\u691c\u7d22<br\/>ST_DWithin]\n    end\n\n    UI --> MAP\n    UI --> REPO\n    REPO --> API\n    REPO --> CACHE\n    API --> DB\n    DB --> SEARCH\n\n    style MAP fill:#3b82f6,color:#fff\n    style API fill:#10b981,color:#fff\n    style DB fill:#8b5cf6,color:#fff<\/code><\/pre>\n
    \u8a2d\u8a08\u5224\u65ad\u2460: \u30de\u30fc\u30ab\u30fc\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0<\/h3>\n
    \u6570\u5343\u4ef6\u306e\u30de\u30fc\u30ab\u30fc\u3092\u5168\u3066\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30ba\u30fc\u30e0\u30ec\u30d9\u30eb\u306b\u5fdc\u3058\u3066\u8fd1\u63a5\u30de\u30fc\u30ab\u30fc\u3092\u30af\u30e9\u30b9\u30bf\uff08\u96c6\u7d04\uff09\u3057\u307e\u3059\u3002<\/p>\n
    \u63a1\u7528<\/strong>: flutter_map_marker_cluster<\/code>\u3067\u306f\u306a\u304f\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u5074\u3067\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0<\/strong>\u3059\u308b\u65b9\u5f0f\u3092\u9078\u629e\u3002<\/p>\n
    | \u65b9\u5f0f | \u51e6\u7406\u5834\u6240 | \u30e1\u30ea\u30c3\u30c8 | \u30c7\u30e1\u30ea\u30c3\u30c8 | \u9078\u5b9a |
    \n|——|———|———|———-|——|
    \n| \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0 | Flutter | \u901a\u4fe1\u4e0d\u8981 | \u6570\u5343\u4ef6\u306e\u5ea7\u6a19\u8a08\u7b97\u3067UI\u9045\u5ef6 | \u00d7 |
    \n| \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u5074\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0 | API | UI\u8ca0\u8377\u30bc\u30ed | API\u547c\u3073\u51fa\u3057\u304c\u5897\u3048\u308b | **\u63a1\u7528** |<\/p>\n
    \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3067\u306fPostGIS\u306e\u7a7a\u9593\u95a2\u6570\u30922\u3064\u4f7f\u3044\u5206\u3051\u3066\u3044\u307e\u3059\u3002\u7269\u4ef6\u306e\u7bc4\u56f2\u691c\u7d22\u306b\u306fST_DWithin<\/code>\u3001\u30de\u30fc\u30ab\u30fc\u306e\u96c6\u7d04\u306b\u306fST_ClusterDBSCAN<\/code>\u3002\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\uff08\u8868\u793a\u7bc4\u56f2\uff09\u3068\u30ba\u30fc\u30e0\u30ec\u30d9\u30eb\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u6e08\u307f\u306e\u30de\u30fc\u30ab\u30fc\u5ea7\u6a19\u3092API\u3067\u8fd4\u3057\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306fJSON\u3092\u53d7\u3051\u53d6\u3063\u3066\u63cf\u753b\u3059\u308b\u3060\u3051\u3002<\/p>\n
    \/\/ \u30de\u30fc\u30ab\u30fc\u53d6\u5f97\uff08\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u6e08\u307fAPI\u30ec\u30b9\u30dd\u30f3\u30b9\uff09\nFuture<List<MapMarker>> fetchMarkers({\n  required LatLngBounds viewport,\n  required double zoomLevel,\n}) async {\n  final response = await _dio.get('\/api\/v1\/properties\/markers', \n    queryParameters: {\n      'ne_lat': viewport.northeast.latitude,\n      'ne_lng': viewport.northeast.longitude,\n      'sw_lat': viewport.southwest.latitude,\n      'sw_lng': viewport.southwest.longitude,\n      'zoom': zoomLevel.round(),\n    },\n  );\n  return (response.data as List)\n      .map((json) => MapMarker.fromJson(json))\n      .toList();\n}<\/code><\/pre>\n
    \u3053\u306e\u65b9\u5f0f\u306b\u3088\u308a\u3001\u5730\u56f3\u4e0a\u306b\u540c\u6642\u8868\u793a\u3055\u308c\u308b\u30de\u30fc\u30ab\u30fc\u306f\u5e38\u306b\u6700\u5927100\u4ef6\u4ee5\u4e0b<\/strong>\u306b\u5236\u5fa1\u3067\u304d\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u3092\u89e3\u6d88\u3057\u307e\u3057\u305f\u3002<\/p>\n
    \u8a2d\u8a08\u5224\u65ad\u2461: Platform View \u306e\u6700\u9069\u5316<\/h3>\n
    Flutter 3.x\u4ee5\u964d\u3001google_maps_flutter<\/code>\u306fHybrid Composition\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u30cd\u30a4\u30c6\u30a3\u30d6\u30d3\u30e5\u30fc\u3068Flutter\u30d3\u30e5\u30fc\u3092\u91cd\u306d\u5408\u308f\u305b\u308b\u65b9\u5f0f\u3067\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u6539\u5584\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3067\u3082\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\uff08\u7269\u4ef6\u8a73\u7d30\u306e\u30dc\u30c8\u30e0\u30b7\u30fc\u30c8\u7b49\uff09\u3068\u306e\u63cf\u753b\u7af6\u5408\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n
    \u5bfe\u7b56\u3068\u3057\u3066\u4ee5\u4e0b\u3092\u5b9f\u65bd:<\/p>\n
      \n
    • \u5730\u56f3\u64cd\u4f5c\u4e2d\u306f\u30dc\u30c8\u30e0\u30b7\u30fc\u30c8\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u6291\u5236<\/strong>: onCameraMoveStarted<\/code>\u3067\u4e00\u6642\u7684\u306b\u30b7\u30fc\u30c8\u306e\u30ea\u30d3\u30eb\u30c9\u3092\u6b62\u3081\u308b<\/li>\n
    • \u30de\u30fc\u30ab\u30fc\u30bf\u30c3\u30d7\u6642\u306e\u307f\u7269\u4ef6\u8a73\u7d30\u3092\u30d5\u30a7\u30c3\u30c1<\/strong>: \u4e8b\u524d\u8aad\u307f\u8fbc\u307f\u3092\u907f\u3051\u3001\u30bf\u30c3\u30d7\u2192API\u547c\u3073\u51fa\u3057\u2192\u8868\u793a\u306e\u9045\u5ef6\u3092\u6700\u5c0f\u5316\uff08\u5e73\u5747180ms\uff09<\/li>\n
    • RepaintBoundary<\/code>\u3067\u5730\u56f3\u3068\u7269\u4ef6\u30ea\u30b9\u30c8\u306e\u63cf\u753b\u9818\u57df\u3092\u5206\u96e2<\/strong>: \u7269\u4ef6\u30ea\u30b9\u30c8\u306e\u30b9\u30af\u30ed\u30fc\u30eb\u304c\u5730\u56f3\u306e\u518d\u63cf\u753b\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b<\/li>\n
      \u8a2d\u8a08\u5224\u65ad\u2462: \u72b6\u614b\u7ba1\u7406\uff08BLoC + Riverpod\u4f75\u7528\uff09<\/h3>\n
      \u5730\u56f3\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ea\u306f\u72b6\u614b\u304c\u8907\u96d1\u3067\u3059\u3002\u5730\u56f3\u306e\u30ab\u30e1\u30e9\u4f4d\u7f6e\u3001\u8868\u793a\u4e2d\u306e\u30de\u30fc\u30ab\u30fc\u3001\u9078\u629e\u4e2d\u306e\u7269\u4ef6\u3001\u691c\u7d22\u30d5\u30a3\u30eb\u30bf\u2014\u2014\u3053\u308c\u3089\u304c\u76f8\u4e92\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n
      RIRIFE\u3067\u306fflutter_bloc<\/strong>\u3068flutter_riverpod<\/strong>\u3092\u4f75\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u753b\u9762\u9077\u79fb\u306b\u4f34\u3046\u8907\u96d1\u306a\u72b6\u614b\uff08\u7269\u4ef6\u691c\u7d22\u30d5\u30a3\u30eb\u30bf\u3001\u304a\u6c17\u306b\u5165\u308a\u30ea\u30b9\u30c8\u7b49\uff09\u306fBLoC\u3067\u7ba1\u7406\u3057\u3001\u5730\u56f3\u306e\u30ab\u30e1\u30e9\u4f4d\u7f6e\u3084\u30de\u30fc\u30ab\u30fc\u306e\u975e\u540c\u671f\u53d6\u5f97\u3068\u3044\u3063\u305f\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc<\/strong>\u306fRiverpod\u3067\u7ba1\u7406\u3002\u5f79\u5272\u3092\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u3069\u3061\u3089\u304b\u4e00\u65b9\u306b\u5bc4\u305b\u308b\u3088\u308a\u898b\u901a\u3057\u304c\u826f\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
      graph LR\n    CAM[\u30ab\u30e1\u30e9\u4f4d\u7f6e\u5909\u66f4] --> FETCH[\u30de\u30fc\u30ab\u30fc\u518d\u53d6\u5f97]\n    FILTER[\u30d5\u30a3\u30eb\u30bf\u5909\u66f4] --> FETCH\n    FETCH --> MARKERS[\u30de\u30fc\u30ab\u30fc\u66f4\u65b0]\n    MARKERS --> MAP[\u5730\u56f3\u63cf\u753b]\n    TAP[\u30de\u30fc\u30ab\u30fc\u30bf\u30c3\u30d7] --> DETAIL[\u7269\u4ef6\u8a73\u7d30\u53d6\u5f97]\n    DETAIL --> SHEET[\u30dc\u30c8\u30e0\u30b7\u30fc\u30c8\u8868\u793a]\n\n    style FETCH fill:#f59e0b,color:#fff\n    style MAP fill:#3b82f6,color:#fff\n    style SHEET fill:#8b5cf6,color:#fff<\/code><\/pre>\n
      Riverpod\u5074\u3067\u306fAsyncNotifierProvider<\/code>\u3067API\u306e\u975e\u540c\u671f\u72b6\u614b\u3092\u7ba1\u7406\u3057\u3001\u30ab\u30e1\u30e9\u4f4d\u7f6e\u5909\u66f4\u6642\u306e\u30c7\u30d0\u30a6\u30f3\u30b9\u51e6\u7406\uff08300ms\uff09\u3092\u5b9f\u88c5\u3002\u30e6\u30fc\u30b6\u30fc\u304c\u5730\u56f3\u3092\u30b9\u30af\u30ed\u30fc\u30eb\u3059\u308b\u305f\u3073\u306bAPI\u3092\u53e9\u304f\u306e\u3067\u306f\u306a\u304f\u3001\u64cd\u4f5c\u304c\u6b62\u307e\u3063\u3066300ms\u5f8c\u306b1\u56de\u3060\u3051\u53d6\u5f97<\/strong>\u3057\u307e\u3059\u3002<\/p>\n
      \/\/ \u30ab\u30e1\u30e9\u79fb\u52d5\u6642\u306e\u30c7\u30d0\u30a6\u30f3\u30b9\u51e6\u7406\uff08Riverpod AsyncNotifier\u5185\uff09\nTimer? _debounceTimer;\n\nvoid onCameraMoved(CameraPosition position) {\n  _debounceTimer?.cancel();\n  _debounceTimer = Timer(const Duration(milliseconds: 300), () {\n    fetchMarkers(\n      viewport: position.bounds,\n      zoom: position.zoom,\n    );\n  });\n}<\/code><\/pre>\n
      \u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u307e\u3068\u3081<\/h3>\n
      | \u5224\u65ad\u30dd\u30a4\u30f3\u30c8 | \u9078\u629e\u80a2A | \u9078\u629e\u80a2B | \u63a1\u7528 | \u7406\u7531 |
      \n|————-|———|———|——|——|
      \n| \u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0 | \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074 | \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u5074 | B | UI\u8ca0\u8377\u56de\u907f |
      \n| \u72b6\u614b\u7ba1\u7406 | BLoC\u5358\u72ec | BLoC + Riverpod\u4f75\u7528 | B | \u753b\u9762\u72b6\u614b\u306fBLoC\u3001\u5730\u56f3\u306e\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u306fRiverpod\u3002\u5f79\u5272\u5206\u96e2\u3067\u898b\u901a\u3057\u5411\u4e0a |
      \n| \u753b\u50cf\u30ad\u30e3\u30c3\u30b7\u30e5 | \u81ea\u524d\u5b9f\u88c5 | cached_network_image | B | \u67af\u308c\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u59d4\u4efb |
      \n| HTTP\u30ad\u30e3\u30c3\u30b7\u30e5 | \u81ea\u524d\u5b9f\u88c5 | dio_cache_interceptor | B | Dio\u306e\u30a4\u30f3\u30bf\u30fc\u30bb\u30d7\u30bf\u30fc\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u5c64\u306b\u900f\u904e\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5 |
      \n| \u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3 | Navigator 2.0 | go_router | B | \u5ba3\u8a00\u7684\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0 |<\/p>\n
      —<\/p>\n
      4. \u5b9f\u88c5 \u2014 3\u30f6\u6708\u306eMVP\u30b9\u30d7\u30ea\u30f3\u30c8<\/h2>\n
      \u3053\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u30e2\u30d0\u30a4\u30eb\u30a8\u30f3\u30b8\u30cb\u30a21\u540d\uff08Flutter\uff09\u3068\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a21\u540d\uff08FastAPI + PostGIS\uff09\u306e2\u540d\u4f53\u5236\u3067\u3059\u3002<\/p>\n
      Month 1: \u5730\u56f3+\u30de\u30fc\u30ab\u30fc\u57fa\u76e4<\/h3>\n