{"id":25550,"date":"2024-10-26T13:50:51","date_gmt":"2024-10-26T13:50:51","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=25550"},"modified":"2024-11-26T08:01:24","modified_gmt":"2024-11-26T08:01:24","slug":"flutter-%ea%b0%95%ec%a2%8c-14-4-async%ec%99%80-await-%ed%82%a4%ec%9b%8c%eb%93%9c","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/25550\/","title":{"rendered":"Flutter \uac15\uc88c: 14.4 Async\uc640 Await \ud0a4\uc6cc\ub4dc"},"content":{"rendered":"<p>Flutter\ub294 Dart \uc5b8\uc5b4\ub97c \uae30\ubc18\uc73c\ub85c \ud55c \ud504\ub808\uc784\uc6cc\ud06c\ub85c, \ud604\ub300\uc801\uc778 \ubaa8\ubc14\uc77c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc27d\uac8c \uac1c\ubc1c\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ud6a8\uc728\uc801\uc778 \ube44\ub3d9\uae30 \ucc98\ub9ac\ub97c \uc704\ud574 Dart \uc5b8\uc5b4\ub294 async \ubc0f await \ud0a4\uc6cc\ub4dc\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uac1c\ub150\ubd80\ud130 \uc2dc\uc791\ud558\uc5ec, Flutter\uc5d0\uc11c async\uc640 await\uc744 \uc5b4\ub5bb\uac8c \ud65c\uc6a9\ud558\ub294\uc9c0, \uadf8 \uc0ac\uc6a9 \uc0ac\ub840\uc640 \uc8fc\uc758\uc0ac\ud56d\uae4c\uc9c0 \ud3ed\ub113\uac8c \ub2e4\ub8e8\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>1. \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uac1c\ub150<\/h2>\n<p>\ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc740 \ud504\ub85c\uc138\uc11c\uac00 \ud2b9\uc815 \uc791\uc5c5\uc758 \uc644\ub8cc\ub97c \uae30\ub2e4\ub9ac\uc9c0 \uc54a\uace0 \ub2e4\ub978 \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4. \ube44\ub3d9\uae30\uc801 \uc811\uadfc\uc740 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4(UI)\ub97c \ubd80\ub4dc\ub7fd\uace0 \ubc18\uc751\ud615\uc73c\ub85c \ub9cc\ub4e4 \uc218 \uc788\ub2e4\ub294 \uc7a5\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc608\ub97c \ub4e4\uc5b4, \ub124\ud2b8\uc6cc\ud06c \uc694\uccad\uc744 \ubcf4\ub0b4\ub294 \uacbd\uc6b0, \uc694\uccad\uc774 \uc644\ub8cc\ub418\uae30\ub97c \uae30\ub2e4\ub9ac\ub294 \ub3d9\uc548 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \uba48\ucd94\uc9c0 \uc54a\ub3c4\ub85d \ud558\ub824\uba74 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h2>2. Dart\uc5d0\uc11c\uc758 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d<\/h2>\n<p>Dart\uc5d0\uc11c \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc740 <code>Future<\/code>\uc640 <code>Stream<\/code>\uc744 \ud1b5\ud574 \uc774\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4. <code>Future<\/code>\ub294 \ud2b9\uc815 \uc791\uc5c5\uc774 \uc644\ub8cc\ub418\uc5c8\uc744 \ub54c \uacb0\uacfc\ub97c \ubc18\ud658\ud558\uac70\ub098 \uc624\ub958\ub97c \ubc1c\uc0dd\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. <code>Stream<\/code>\uc740 \ube44\ub3d9\uae30 \ub370\uc774\ud130 \uc774\ubca4\ud2b8\uc758 \ud750\ub984\uc744 \ucc98\ub9ac\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n<h3>2.1 Future<\/h3>\n<p>Future \uac1d\uccb4\ub294 \ube44\ub3d9\uae30 \uc791\uc5c5\uc758 \uacb0\uacfc\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. Future\ub294 \ub450 \uac00\uc9c0 \uc0c1\ud0dc\ub97c \uac00\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li><strong>\uc644\ub8cc<\/strong>: \uc791\uc5c5\uc774 \uc131\uacf5\uc801\uc73c\ub85c \uc218\ud589\ub418\uc5b4 \uacb0\uacfc\ub97c \ubc18\ud658\ud568.<\/li>\n<li><strong>\uc624\ub958<\/strong>: \uc791\uc5c5 \uc911 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\uc74c.<\/li>\n<\/ul>\n<p>Future \uac1d\uccb4\ub294 <code>then<\/code> \uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30 \uc791\uc5c5\uc774 \uc644\ub8cc\ub41c \ud6c4\uc758 \ub3d9\uc791\uc744 \uc815\uc758\ud558\uac70\ub098 <code>catchError<\/code> \uba54\uc11c\ub4dc\ub85c \uc624\ub958\ub97c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>2.2 Stream<\/h3>\n<p>Stream\uc740 \uc5ec\ub7ec \uac1c\uc758 \ube44\ub3d9\uae30 \uc774\ubca4\ud2b8\ub97c \ucc98\ub9ac\ud558\uae30 \uc704\ud55c \uac1d\uccb4\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc6f9\uc18c\ucf13, \uc0ac\uc6a9\uc790 \uc785\ub825, \ud30c\uc77c \uc77d\uae30\uc640 \uac19\uc740 \uacbd\uc6b0\uc5d0 Stream\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130\ub97c \ube44\ub3d9\uae30\uc801\uc73c\ub85c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Stream\uc740 \ub370\uc774\ud130\uac00 \uc0dd\uc131\ub420 \ub54c\ub9c8\ub2e4 \uc774\ubca4\ud2b8\ub97c \ubc1c\ud589\ud558\uba70, \uc774\ub97c \ud1b5\ud574 \ub370\uc774\ud130\ub97c \uc2e4\uc2dc\uac04\uc73c\ub85c \ubc1b\uc544 \ucc98\ub9ac\ud558\ub294 \uac83\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n<h2>3. async\uc640 await \ud0a4\uc6cc\ub4dc<\/h2>\n<p>async\uc640 await \ud0a4\uc6cc\ub4dc\ub294 Dart\uc5d0\uc11c \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \ubcf4\ub2e4 \uac04\uacb0\ud558\uac8c \uc791\uc131\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\ub294 \uad6c\uc870\uc785\ub2c8\ub2e4. async \ud568\uc218\ub97c \uc815\uc758\ud558\uace0 \uadf8 \uc548\uc5d0\uc11c await \ud0a4\uc6cc\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec Future \uac1d\uccb4\uc758 \uacb0\uacfc\ub97c \uae30\ub2e4\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>3.1 async \ud568\uc218<\/h3>\n<p>async \ud0a4\uc6cc\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30 \ud568\uc218\ub97c \uc815\uc758\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. async \ud568\uc218\ub294 \ud56d\uc0c1 Future \uac1d\uccb4\ub97c \ubc18\ud658\ud558\uba70, \uc774\ub97c \ud1b5\ud574 \ube44\ub3d9\uae30 \uc791\uc5c5\uc758 \uacb0\uacfc\ub97c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-dart\">Future<void> fetchData() async {\n    \/\/ \ub370\uc774\ud130 \uac00\uc838\uc624\uae30 \uc791\uc5c5\n}<\/void><\/code><\/pre>\n<h3>3.2 await \ud0a4\uc6cc\ub4dc<\/h3>\n<p>await \ud0a4\uc6cc\ub4dc\ub294 async \ud568\uc218 \ub0b4\ubd80\uc5d0\uc11c\ub9cc \uc0ac\uc6a9\ud560 \uc218 \uc788\uc73c\uba70, \ud2b9\uc815 Future \uac1d\uccb4\uac00 \uc644\ub8cc\ub420 \ub54c\uae4c\uc9c0 \ud568\uc218\ub97c \uba48\ucd94\uace0 \ub300\uae30\ud569\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \ub2e4\ub978 \uc791\uc5c5\uc744 \ucc28\ub2e8\ud558\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 UI\uac00 \uba48\ucd94\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-dart\">Future<void> fetchData() async {\n    var data = await fetchFromAPI();\n    print(data);\n}<\/void><\/code><\/pre>\n<h2>4. \uc0ac\uc6a9 \uc0ac\ub840<\/h2>\n<p>async\uc640 await\uc744 \uc0ac\uc6a9\ud558\ub294 \ub2e4\uc591\ud55c \uc608\uc81c\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>4.1 \uac04\ub2e8\ud55c \ub124\ud2b8\uc6cc\ud06c \uc694\uccad<\/h3>\n<pre><code class=\"language-dart\">import 'dart:convert';\nimport 'package:http\/http.dart' as http;\n\nFuture<void> fetchData() async {\n    final response = await http.get(Uri.parse('https:\/\/jsonplaceholder.typicode.com\/posts'));\n    \n    if (response.statusCode == 200) {\n        var data = json.decode(response.body);\n        print(data);\n    } else {\n        throw Exception('Failed to load data');\n    }\n}<\/void><\/code><\/pre>\n<h3>4.2 \uc0ac\uc6a9\uc790 \uc785\ub825 \ucc98\ub9ac<\/h3>\n<p>\uc0ac\uc6a9\uc790\ub85c\ubd80\ud130 \uc785\ub825\uc744 \ubc1b\uc544 \ube44\ub3d9\uae30\ub85c \ucc98\ub9ac\ud558\ub294 \uc608\uc2dc\uc785\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-dart\">Future<void> handleUserInput() async {\n    String input = await getUserInput(); \/\/ \ube44\ub3d9\uae30\uc801\uc73c\ub85c \uc0ac\uc6a9\uc790 \uc785\ub825 \ubc1b\uae30\n    print('User input: $input');\n}<\/void><\/code><\/pre>\n<h3>4.3 \ube44\ub3d9\uae30 \ub370\uc774\ud130 \uc2a4\ud2b8\ub9bc<\/h3>\n<p>Stream\uc744 \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30 \ub370\uc774\ud130\ub97c \ucc98\ub9ac\ud558\ub294 \uc608\uc2dc\uc785\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-dart\">Stream<int> numberStream() async* {\n    for (int i = 1; i &lt;= 5; i++) {\n        await Future.delayed(Duration(seconds: 1));\n        yield i;\n    }\n}\n\nvoid main() async {\n    await for (int number in numberStream()) {\n        print(number);\n    }\n}<\/int><\/code><\/pre>\n<h2>5. \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0\uc11c\uc758 \uc8fc\uc758\uc0ac\ud56d<\/h2>\n<p>\ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uc0ac\uc6a9\ud560 \ub54c \uc8fc\uc758\ud574\uc57c \ud560 \uba87 \uac00\uc9c0 \uc0ac\ud56d\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>UI \uc5c5\ub370\uc774\ud2b8:<\/strong> \ube44\ub3d9\uae30 \uc791\uc5c5\uc774 \uc644\ub8cc\ub41c \ud6c4 UI\ub97c \uc5c5\ub370\uc774\ud2b8\ud558\ub824\uba74 setState()\ub97c \ud638\ucd9c\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uc624\ub958 \ucc98\ub9ac:<\/strong> await\ub97c \uc0ac\uc6a9\ud560 \ub54c \ud56d\uc0c1 try-catch \ubb38\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc7a0\uc7ac\uc801\uc778 \uc624\ub958\ub97c \ucc98\ub9ac\ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc131\ub2a5 \ucd5c\uc801\ud654:<\/strong> \uac00\ub2a5\ud55c \ud55c \ube44\ub3d9\uae30 \uc791\uc5c5\uc758 \ubcd1\ub82c \ucc98\ub9ac\ub97c \ud65c\uc6a9\ud558\uc5ec \uc131\ub2a5\uc744 \ucd5c\uc801\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>6. \ub9c8\ubb34\ub9ac<\/h2>\n<p>\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 Flutter\uc5d0\uc11c async\uc640 await\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc95\uacfc \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc740 \ud604\ub300 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uac1c\ubc1c\uc5d0 \uc788\uc5b4 \ub9e4\uc6b0 \uc911\uc694\ud55c \ubd80\ubd84\uc774\uba70, \uc774\ub97c \ud1b5\ud574 \uc0ac\uc6a9\uc790\uc5d0\uac8c \ub354 \ub098\uc740 \uacbd\ud5d8\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc55e\uc73c\ub85c Dart\uc640 Flutter\ub97c \ud65c\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \ubcf4\ub2e4 \ub2a5\uc219\ud558\uac8c \ub2e4\ub8e8\uc5b4 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n<p>\ud559\uc2b5\uc740 \uc9c0\uc18d\uc801\uc774\uba70, \ud504\ub808\uc784\uc6cc\ud06c\uc640 \uc5b8\uc5b4\uc758 \ud2b9\uc131\uc744 \uc774\ud574\ud558\ub294 \uac83\uc774 \ub354\uc6b1 \uc911\uc694\ud569\ub2c8\ub2e4. \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uac1c\ub150\uc744 \uc774\ud574\ud558\uace0 \ud65c\uc6a9\ud568\uc73c\ub85c\uc368 Flutter \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc131\ub2a5\uacfc \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\ub294 \ub370 \ud06c\uac8c \uae30\uc5ec\ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc5ec\ub7ec\ubd84\uc758 Flutter \uac1c\ubc1c \uc5ec\uc815\uc5d0 \ub9ce\uc740 \ub3c4\uc6c0\uc774 \ub418\uae38 \ubc14\ub78d\ub2c8\ub2e4!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flutter\ub294 Dart \uc5b8\uc5b4\ub97c \uae30\ubc18\uc73c\ub85c \ud55c \ud504\ub808\uc784\uc6cc\ud06c\ub85c, \ud604\ub300\uc801\uc778 \ubaa8\ubc14\uc77c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc27d\uac8c \uac1c\ubc1c\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ud6a8\uc728\uc801\uc778 \ube44\ub3d9\uae30 \ucc98\ub9ac\ub97c \uc704\ud574 Dart \uc5b8\uc5b4\ub294 async \ubc0f await \ud0a4\uc6cc\ub4dc\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uac1c\ub150\ubd80\ud130 \uc2dc\uc791\ud558\uc5ec, Flutter\uc5d0\uc11c async\uc640 await\uc744 \uc5b4\ub5bb\uac8c \ud65c\uc6a9\ud558\ub294\uc9c0, \uadf8 \uc0ac\uc6a9 \uc0ac\ub840\uc640 \uc8fc\uc758\uc0ac\ud56d\uae4c\uc9c0 \ud3ed\ub113\uac8c \ub2e4\ub8e8\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4. 1. \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uac1c\ub150 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc740 \ud504\ub85c\uc138\uc11c\uac00 \ud2b9\uc815 \uc791\uc5c5\uc758 \uc644\ub8cc\ub97c \uae30\ub2e4\ub9ac\uc9c0 &hellip; <a href=\"https:\/\/atmokpo.com\/w\/25550\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;Flutter \uac15\uc88c: 14.4 Async\uc640 Await \ud0a4\uc6cc\ub4dc&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[17],"tags":[],"class_list":["post-25550","post","type-post","status-publish","format-standard","hentry","category-17"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Flutter \uac15\uc88c: 14.4 Async\uc640 Await \ud0a4\uc6cc\ub4dc - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atmokpo.com\/w\/25550\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flutter \uac15\uc88c: 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