{"id":25626,"date":"2024-10-26T13:51:15","date_gmt":"2024-10-26T13:51:15","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=25626"},"modified":"2024-11-26T08:00:48","modified_gmt":"2024-11-26T08:00:48","slug":"%ed%94%8c%eb%9f%ac%ed%84%b0-%ea%b0%95%ec%a2%8c-4-4-%ec%83%81%ed%83%9c%ec%9d%98-%ec%a0%95%ec%9d%98","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/25626\/","title":{"rendered":"\ud50c\ub7ec\ud130 \uac15\uc88c, 4.4 \uc0c1\ud0dc\uc758 \uc815\uc758"},"content":{"rendered":"<div class=\"post-body\">\n<h2>\ud50c\ub7ec\ud130 \uac15\uc88c 4.4 \uc0c1\ud0dc\uc758 \uc815\uc758<\/h2>\n<p>\ud50c\ub7ec\ud130(Flutter)\ub294 \uad6c\uae00\uc758 UI \ud234\ud0b7\uc73c\ub85c, iOS\uc640 Android, \uc6f9, \ub370\uc2a4\ud06c\ud0d1 \ub4f1 \uc5ec\ub7ec \ud50c\ub7ab\ud3fc\uc5d0\uc11c\uc758 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ube60\ub974\uace0 \uc27d\uac8c \uac1c\ubc1c\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \ud2b9\ud788, \ud50c\ub7ec\ud130\uc758 \uc0c1\ud0dc \uad00\ub9ac(state management)\ub294 \uac1c\ubc1c\uc790\ub4e4\uc774 UI\uc758 \ubcc0\ud654\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \ucc98\ub9ac\ud560 \uc218 \uc788\ub3c4\ub85d \uc9c0\uc6d0\ud558\ub294 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \u2018\uc0c1\ud0dc(state)\u2019\uc758 \uc815\uc758\uc640 \uadf8\uac83\uc774 \ud50c\ub7ec\ud130 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc5b4\ub5bb\uac8c \uc801\uc6a9\ub418\ub294\uc9c0\ub97c \uae4a\uc774 \uc788\uac8c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\uc0c1\ud0dc\ub780 \ubb34\uc5c7\uc778\uac00?<\/h3>\n<p>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc5d0\uc11c \uc0c1\ud0dc\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774\ub098 \uac1c\uccb4\uc758 \ud604\ud669\uc744 \ub098\ud0c0\ub0b4\ub294 \ub370\uc774\ud130\uc758 \uc9d1\ud569\uc785\ub2c8\ub2e4. \uc0c1\ud0dc\ub294 \uc0ac\uc6a9\uc790\uc758 \ud589\uc704, \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ub3d9\uc791, \uc678\ubd80 API\uc758 \uc751\ub2f5, \uadf8\ub9ac\uace0 \uae30\ud0c0 \uc5ec\ub7ec \uc694\uc18c\ub4e4\uc5d0 \uc758\ud574 \ubcc0\uacbd\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc0c1\ud0dc\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ud2b9\uc815 UI\ub97c \ub80c\ub354\ub9c1\ud558\ub294 \ub370 \ud544\uc694\ud55c \uc815\ubcf4\ub97c \ud3ec\ud568\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\ud50c\ub7ec\ud130\uc5d0\uc11c\uc758 \uc0c1\ud0dc \uad00\ub9ac<\/h3>\n<p>\ud50c\ub7ec\ud130\uc5d0\uc11c \uc0c1\ud0dc \uad00\ub9ac\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 UI\uac00 \ub370\uc774\ud130\uc5d0 \ubc18\uc751\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc8fc\ub294 \ub2e4\uc591\ud55c \uae30\uc220\uacfc \ud328\ud134\uc744 \ud3ec\ud568\ud569\ub2c8\ub2e4. \uc0c1\ud0dc \uad00\ub9ac\ub294 \uc8fc\ub85c \ub2e4\uc74c \ub450 \uac00\uc9c0 \ubc94\uc8fc\ub85c \ub098\ub20c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\ub85c\uceec \uc0c1\ud0dc(Local State)<\/strong>: \uc704\uc82f \ub0b4\uc5d0\uc11c\ub9cc \uc0ac\uc6a9\ub418\ub294 \uc0c1\ud0dc\ub85c, \ud574\ub2f9 \uc704\uc82f\uc774 \uc18c\uc720\ud558\uace0 \uc788\ub294 \ub370\uc774\ud130\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ubc84\ud2bc\uc774 \ud074\ub9ad\ub418\uc5c8\ub294\uc9c0\uc758 \uc5ec\ubd80, \ud14d\uc2a4\ud2b8 \ud544\ub4dc\uc5d0 \uc785\ub825\ub41c \uac12 \ub4f1\uc774 \uc5ec\uae30\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uae00\ub85c\ubc8c \uc0c1\ud0dc(Global State)<\/strong>: \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc804\uc5ed\uc5d0\uc11c \uc811\uadfc\ud560 \uc218 \uc788\ub294 \uc0c1\ud0dc\ub85c, \uc5ec\ub7ec \uc704\uc82f\uc5d0\uc11c \uacf5\uc720\ub418\uc5b4\uc57c \ud558\ub294 \uc815\ubcf4\uc785\ub2c8\ub2e4. \uc0ac\uc6a9\uc790 \uc778\uc99d \uc0c1\ud0dc\ub098 \uc7a5\ubc14\uad6c\ub2c8\uc758 \uc544\uc774\ud15c \ubaa9\ub85d \ub4f1\uc774 \uc774\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>\uc0c1\ud0dc\uc758 \uc0dd\uc560 \uc8fc\uae30(Lifecycle)<\/h3>\n<p>\ud50c\ub7ec\ud130\uc5d0\uc11c \uc0c1\ud0dc\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc0dd\uc560 \uc8fc\uae30\ub97c \uac16\uc2b5\ub2c8\ub2e4:<\/p>\n<ol>\n<li><strong>\uc0dd\uc131(Create)<\/strong>: \uc0c1\ud0dc\uac00 \ucc98\uc74c \uc0dd\uc131\ub429\ub2c8\ub2e4. \uc774\ub54c \ucd08\uae30\ud654 \uc791\uc5c5\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc5c5\ub370\uc774\ud2b8(Update)<\/strong>: \uc0c1\ud0dc \uc815\ubcf4\uac00 \ubcc0\uacbd\ub418\uba74, \ud574\ub2f9 \uc0c1\ud0dc\ub97c \uc0ac\uc6a9\ud558\ub294 \uc704\uc82f\ub4e4\uc774 \ub2e4\uc2dc \ub80c\ub354\ub9c1\ub429\ub2c8\ub2e4.<\/li>\n<li><strong>\uc18c\uba78(Dispose)<\/strong>: \ub354 \uc774\uc0c1 \ud544\uc694 \uc5c6\ub294 \uc0c1\ud0dc\ub294 \ud574\uc81c\ub429\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \uc790\uc6d0(resource) \uad00\ub9ac\uac00 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h3>\uc0c1\ud0dc \uad00\ub9ac\ub97c \uc704\ud55c \uc8fc\uc694 \ud328\ud134<\/h3>\n<p>\ud50c\ub7ec\ud130\uc5d0\uc11c\ub294 \ub2e4\uc591\ud55c \uc0c1\ud0dc \uad00\ub9ac \ud328\ud134\uc774 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc8fc\uc694 \ud328\ud134\uc73c\ub85c\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uac83\ub4e4\uc774 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li><strong>setState<\/strong>: \uac00\uc7a5 \uae30\ubcf8\uc801\uc778 \uc0c1\ud0dc \uad00\ub9ac \ubc29\ubc95\uc73c\ub85c, StatefulWidget\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0c1\ud0dc\ub97c \uad00\ub9ac\ud569\ub2c8\ub2e4. \uac04\ub2e8\ud55c \uc6a9\ub3c4\uc5d0 \uc801\ud569\ud558\uc9c0\ub9cc, \ubcf5\uc7a1\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c\ub294 \uad00\ub9ac\uac00 \uc5b4\ub824\uc6b8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>InheritedWidget<\/strong>: \uc704\uc82f \ud2b8\ub9ac\uc5d0\uc11c \ub370\uc774\ud130\uc758 \uc804\ud30c\ub97c \uac00\ub2a5\ud558\uac8c \ud558\ub294 \ubc29\uc2dd\uc73c\ub85c, \uc911\ucca9\ub41c \uc704\uc82f\uc5d0\uc11c \uc0c1\uc704 \uc704\uc82f\uc758 \uc0c1\ud0dc\ub97c \uc811\uadfc\ud560 \uc218 \uc788\uac8c \ud574\uc90d\ub2c8\ub2e4.<\/li>\n<li><strong>Provider \ud328\ud134<\/strong>: InheritedWidget\uc744 \uae30\ubc18\uc73c\ub85c \ud558\uc5ec \ubcf4\ub2e4 \ub354 \ud3b8\ub9ac\ud558\uac8c \uc0c1\ud0dc\ub97c \uad00\ub9ac\ud560 \uc218 \uc788\ub3c4\ub85d \ud574\uc8fc\ub294 \ud328\ud0a4\uc9c0\uc785\ub2c8\ub2e4. \uc804\uc5ed \uc0c1\ud0dc \uad00\ub9ac\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>BLoC (Business Logic Component)<\/strong>: \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 UI\uc640 \ubd84\ub9ac\ud558\ub294 \ud328\ud134\uc73c\ub85c, \uc2a4\ud2b8\ub9bc(Stream)\uacfc \ub370\uc774\ud130 \ud750\ub984\uc744 \ud1b5\ud574 \uc0c1\ud0dc\ub97c \uad00\ub9ac\ud569\ub2c8\ub2e4. REST API\uc640 \uac19\uc740 \uc678\ubd80 \ub370\uc774\ud130\uc640\uc758 \ud1b5\uc2e0\uc744 \uad00\ub9ac\ud558\ub294 \ub370 \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>Riverpod<\/strong>: Provider\uc758 \ub2e8\uc810\ub4e4\uc744 \uac1c\uc120\ud55c \ud328\ud134\uc73c\ub85c, \ub354 \ub9ce\uc740 \uc720\uc5f0\uc131\uacfc \uac04\ud3b8\uc131\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \ud0c0\uc785 \uc548\uc815\uc131 \ubc0f \ud14c\uc2a4\ud2b8\uac00 \uc6a9\uc774\ud55c \ud2b9\uc9d5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>\uc0c1\ud0dc \uad00\ub9ac \uc2e4\uc2b5: \uac04\ub2e8\ud55c \uce74\uc6b4\ud130 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ub9cc\ub4e4\uc5b4\ubcf4\uae30<\/h3>\n<p>\ud50c\ub7ec\ud130\uc5d0\uc11c \uc0c1\ud0dc \uad00\ub9ac\uc758 \uae30\ucd08\ub97c \uc2e4\uc2b5\ud574\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uac04\ub2e8\ud55c \uce74\uc6b4\ud130 \uc571\uc744 \ub9cc\ub4e4\uc5b4\ubcf4\uba74\uc11c setState\ub97c \ud1b5\ud55c \uc0c1\ud0dc \uad00\ub9ac \ubc29\uc2dd\uc744 \ubc30\uc6b0\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h4>1. \ud504\ub85c\uc81d\ud2b8 \uc0dd\uc131<\/h4>\n<p>\uba3c\uc800 \ud50c\ub7ec\ud130 \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud558\uc138\uc694:<\/p>\n<pre><code>flutter create counter_app<\/code><\/pre>\n<h4>2. \uce74\uc6b4\ud130 \ub85c\uc9c1 \ucd94\uac00\ud558\uae30<\/h4>\n<p>lib\/main.dart \ud30c\uc77c\uc5d0\uc11c \ub2e4\uc74c \ucf54\ub4dc\ub97c \ucd94\uac00\ud569\ub2c8\ub2e4:<\/p>\n<pre><code>import 'package:flutter\/material.dart';\n\nvoid main() {\n  runApp(MyApp());\n}\n\nclass MyApp extends StatelessWidget {\n  @override\n  Widget build(BuildContext context) {\n    return MaterialApp(\n      home: CounterPage(),\n    );\n  }\n}\n\nclass CounterPage extends StatefulWidget {\n  @override\n  _CounterPageState createState() =&gt; _CounterPageState();\n}\n\nclass _CounterPageState extends State<counterpage> {\n  int _counter = 0;\n\n  void _incrementCounter() {\n    setState(() {\n      _counter++;\n    });\n  }\n\n  @override\n  Widget build(BuildContext context) {\n    return Scaffold(\n      appBar: AppBar(\n        title: Text('\uce74\uc6b4\ud130 \uc571'),\n      ),\n      body: Center(\n        child: Column(\n          mainAxisAlignment: MainAxisAlignment.center,\n          children: <widget>[\n            Text(\n              '\ubc84\ud2bc\uc744 \ub20c\ub800\uc2b5\ub2c8\ub2e4:',\n            ),\n            Text(\n              '$_counter',\n              style: TextStyle(fontSize: 50),\n            ),\n          ],\n        ),\n      ),\n      floatingActionButton: FloatingActionButton(\n        onPressed: _incrementCounter,\n        tooltip: 'Increment',\n        child: Icon(Icons.add),\n      ),\n    );\n  }\n}<\/widget><\/counterpage><\/code><\/pre>\n<h4>3. \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc2e4\ud589<\/h4>\n<p>\uc571\uc744 \uc2e4\ud589\ud558\uba74 \uce74\uc6b4\ud2b8\ub97c \uc99d\uac00\uc2dc\ud0a4\ub294 \ubc84\ud2bc\uc774 \uc788\ub294 \uac04\ub2e8\ud55c UI\ub97c \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ub9e4\ubc88 \ubc84\ud2bc\uc744 \ub204\ub97c \ub54c\ub9c8\ub2e4 setState\uac00 \ud638\ucd9c\ub418\uc5b4 UI\uac00 \uc5c5\ub370\uc774\ud2b8\ub429\ub2c8\ub2e4.<\/p>\n<h3>\uc0c1\ud0dc \uad00\ub9ac \ub3c4\uad6c \ubc0f \ud328\ud0a4\uc9c0<\/h3>\n<p>\ud50c\ub7ec\ud130 \uc0dd\ud0dc\uacc4\uc5d0\uc11c \ub2e4\uc591\ud55c \uc0c1\ud0dc \uad00\ub9ac \ub3c4\uad6c\uc640 \ud328\ud0a4\uc9c0\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uadf8 \uc911 \uc77c\ubd80\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li><strong>Provider<\/strong>: \uc11c\ub85c \ub2e4\ub978 \uc704\uc82f \uac04\uc758 \uc0c1\ud0dc\ub97c \uc27d\uac8c \uacf5\uc720\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\ub294 \ud328\ud0a4\uc9c0\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>Riverpod<\/strong>: Provider\uc758 \uc0c1\uc704 \ud638\ud658 \ud328\ud0a4\uc9c0\ub85c, \ub354\uc6b1 \uac15\ub825\ud55c \uc0c1\ud0dc \uad00\ub9ac\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>BLoC<\/strong>: \ub370\uc774\ud130 \uc2a4\ud2b8\ub9bc\uc744 \uc774\uc6a9\ud558\uc5ec \uc0c1\ud0dc \uad00\ub9ac\ub97c \uac00\ub2a5\ud558\uac8c \ud558\ub294 \ud328\ud134\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>GetX<\/strong>: \uacbd\ub7c9\ud654\ub41c \uc0c1\ud0dc \uad00\ub9ac, \ub77c\uc6b0\ud305, \uc758\uc874\uc131 \uc8fc\uc785\uc744 \uc9c0\uc6d0\ud558\ub294 \ud328\ud0a4\uc9c0\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>\uacb0\ub860<\/h3>\n<p>\ud50c\ub7ec\ud130\uc758 \uc0c1\ud0dc \uad00\ub9ac \uac1c\ub150\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ub3d9\uc791\uacfc UI \uac04\uc758 \uc0c1\uad00\uad00\uacc4\ub97c \uc774\ud574\ud558\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \ub2e4\uc591\ud55c \ub3c4\uad6c\uc640 \ud328\ud134\uc744 \ud1b5\ud574 \uac1c\ubc1c\uc790\ub294 \ubcf5\uc7a1\ud55c \uc0c1\ud0dc\ub97c \ud6a8\uc728\uc801\uc73c\ub85c \uad00\ub9ac\ud558\uace0, \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \uac1c\uc120\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\ub97c \ud1b5\ud574 \ud50c\ub7ec\ud130\uc758 \uc0c1\ud0dc \uad00\ub9ac\uc758 \uae30\ucd08\ub97c \uc774\ud574\ud558\uace0, \uc774\ub97c \ud65c\uc6a9\ud558\uc5ec \ub354 \ub098\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uac1c\ubc1c\ud560 \uc218 \uc788\ub294 \ubc1c\ud310\uc774 \ub418\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\ud50c\ub7ec\ud130 \uac15\uc88c 4.4 \uc0c1\ud0dc\uc758 \uc815\uc758 \ud50c\ub7ec\ud130(Flutter)\ub294 \uad6c\uae00\uc758 UI \ud234\ud0b7\uc73c\ub85c, iOS\uc640 Android, \uc6f9, \ub370\uc2a4\ud06c\ud0d1 \ub4f1 \uc5ec\ub7ec \ud50c\ub7ab\ud3fc\uc5d0\uc11c\uc758 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ube60\ub974\uace0 \uc27d\uac8c \uac1c\ubc1c\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \ud2b9\ud788, \ud50c\ub7ec\ud130\uc758 \uc0c1\ud0dc \uad00\ub9ac(state management)\ub294 \uac1c\ubc1c\uc790\ub4e4\uc774 UI\uc758 \ubcc0\ud654\ub97c 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