{"id":104,"date":"2026-02-19T23:03:32","date_gmt":"2026-02-19T15:03:32","guid":{"rendered":"https:\/\/blog.flybugs.ink\/?p=104"},"modified":"2026-02-19T23:03:32","modified_gmt":"2026-02-19T15:03:32","slug":"%e7%94%a8-flutter-%e5%86%99%e8%ae%ba%e5%9d%9b%e5%ae%a2%e6%88%b7%e7%ab%af%ef%bc%9a%e4%b8%80%e6%ac%a1%e8%b7%a8%e5%b9%b3%e5%8f%b0%e6%9e%b6%e6%9e%84%e4%b8%8e%e6%80%a7%e8%83%bd%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/blog.flybugs.ink\/?p=104","title":{"rendered":"\u7528 Flutter \u5199\u8bba\u575b\u5ba2\u6237\u7aef\uff1a\u4e00\u6b21\u8de8\u5e73\u53f0\u67b6\u6784\u4e0e\u6027\u80fd\u5b9e\u8df5"},"content":{"rendered":"\n

0x00 \u524d\u8a00<\/strong><\/h2>\n\n\n\n

\u8fd9\u6b21\u7684\u9879\u76ee\u6e90\u81ea\u4e00\u4f4d\u670b\u53cb\u7684\u9700\u6c42\uff1a\u4ed6\u57fa\u4e8e Flarum \u642d\u5efa\u4e86\u4e00\u4e2a\u8bba\u575b\uff0c\u5e76\u5e0c\u671b\u62e5\u6709\u4e00\u4e2a\u4e0e\u5176\u63d2\u4ef6\u548c\u5b9a\u5236\u529f\u80fd\u6df1\u5ea6\u9002\u914d\u7684\u5ba2\u6237\u7aef\u5e94\u7528\u3002\u6700\u521d\u662f\u5c06\u7f51\u7ad9\u76f4\u63a5\u6253\u5305\u6210\u7684H5 App\uff0c\u4f46\u5728\u670d\u52a1\u5668\u90e8\u7f72\u6d77\u5916\u3001\u7f3a\u4e4f\u9488\u5bf9\u6027\u4f18\u5316\u7684\u60c5\u51b5\u4e0b\uff0c\u52a0\u8f7d\u901f\u5ea6\u548c\u4ea4\u4e92\u4f53\u9a8c\u90fd\u96be\u4ee5\u63a5\u53d7\uff0c\u6700\u7ec8\u8fd8\u662f\u56de\u5230\u4e86\u5ba2\u6237\u7aef\u5f00\u53d1\u8fd9\u4e00\u9009\u62e9\u3002<\/p>\n\n\n\n

\u81ea\u7136\u7684\u9879\u76ee\u7684\u6280\u672f\u9009\u578b\u5c31\u8981\u56f4\u7ed5 \u8de8\u5e73\u53f0\u3001\u6027\u80fd\u548c\u5f00\u53d1\u6548\u7387\u8fd9\u4e09\u65b9\u9762\u5c55\u5f00\u3002\u7ed3\u5408\u58f0\u660e\u5f0f UI \u5728\u5f00\u53d1\u6548\u7387\u4e0a\u7684\u4f18\u52bf\uff0c\u4ee5\u53ca Flutter \u5728\u7a33\u5b9a\u6027\u3001\u751f\u6001\u548c\u6027\u80fd\u4e0a\u7684\u7efc\u5408\u8868\u73b0\uff0cFlutter\u4f3c\u4e4e\u662f\u6211\u80fd\u60f3\u5230\u7684\u6700\u597d\u9009\u62e9\u3002<\/p>\n\n\n\n

\u5728\u6b64\u4e4b\u524d\uff0c\u6211\u5e76\u6ca1Flutter\u7684\u5f00\u53d1\u7ecf\u9a8c\uff0c\u53ea\u6709\u66fe\u7528 Jetpack Compose \u5f00\u53d1\u8fc7Android \u5e94\u7528\u3002\u56e0\u6b64\uff0c\u8fd9\u6b21\u5f00\u53d1\u66f4\u50cf\u662f\u4e00\u6b21\u4ece Compose \u8fc1\u79fb\u5230 Flutter \u7684\u5b9e\u8df5\u3002\u5f88\u591a\u5173\u4e8e Flutter \u7684\u7406\u89e3\uff0c\u90fd\u662f\u5728\u8fd9\u4e2a\u9879\u76ee\u91cc\u5efa\u7acb\u8d77\u6765\u7684\u3002<\/p>\n\n\n\n

0x01 Flutter \u521d\u5370\u8c61<\/strong><\/h2>\n\n\n\n

\u540c\u6837\u662f\u58f0\u660e\u5f0f UI\uff0cFlutter \u548c Compose \u5728\u6838\u5fc3\u7406\u5ff5\u4e0a\u5176\u5b9e\u5f88\u63a5\u8fd1\uff0c\u90fd\u662f\u56f4\u7ed5\u201c\u7ec4\u5408\u201d\u6765\u6784\u5efa\u754c\u9762\u3002Compose \u7528 @Composable \u51fd\u6570\u62fc\u88c5 UI\uff0cFlutter \u901a\u8fc7 Widget \u7684 build \u65b9\u6cd5\u7ec4\u5408\u7ec4\u4ef6\u3002\u5f88\u591a\u6982\u5ff5\u51e0\u4e4e\u53ef\u4ee5\u4e00\u4e00\u5bf9\u5e94\uff0c\u6bd4\u5982 Compose \u91cc\u7684 remember \u548c Flutter \u91cc\u7684 StatefulWidget\uff0c\u90fd\u662f\u5bf9 UI State \u7684\u7ba1\u7406\u65b9\u5f0f\u3002\u6709 Compose \u7ecf\u9a8c\u7684\u8bdd\uff0c\u4e0a\u624b Flutter \u5e76\u4e0d\u4f1a\u592a\u56f0\u96be\u3002<\/p>\n\n\n\n

\u4f46\u771f\u6b63\u5199\u8d77\u6765\uff0c\u5dee\u5f02\u611f\u5c31\u6162\u6162\u660e\u663e\u4e86\u3002Compose \u7684 Composable \u662f\u9876\u5c42\u51fd\u6570\uff0c\u800c Flutter \u7684 UI \u662f class \u7ed3\u6784\u4e0b\u7684 build \u91cd\u5199\u65b9\u6cd5\uff0c\u8868\u8fbe\u5f62\u5f0f\u4e0a\u4f1a\u66f4\u504f OOP\uff0c\u4e5f\u66f4\u5bb9\u6613\u4ea7\u751f\u5c42\u5c42\u5d4c\u5957\u7684\u611f\u89c9\u3002\u4ee3\u7801\u89c6\u89c9\u590d\u6742\u5ea6\u786e\u5b9e\u6bd4 Compose \u9ad8\u4e00\u4e9b\u3002\u4e0d\u8fc7\u53cd\u8fc7\u6765\u770b\uff0cFlutter \u628a state \u548c\u903b\u8f91\u6536\u62e2\u5728 class \u91cc\uff0c\u4ece\u7ed3\u6784\u6e05\u6670\u5ea6\u4e0a\u4e5f\u6709\u5b83\u7684\u5408\u7406\u6027\u3002<\/p>\n\n\n\n

\"\"<\/div>
Flutter vs Compose<\/figcaption><\/figure>\n\n\n\n

Flutter \u6ca1\u6709\u7c7b\u4f3c Compose \u90a3\u79cd\u7edf\u4e00\u7684 Modifier \u4f53\u7cfb\u3002\u6837\u5f0f\u3001\u95f4\u8ddd\u3001\u88c5\u9970\u90fd\u9700\u8981\u901a\u8fc7\u4e0d\u540c\u7684 Widget \u6216 Style \u5206\u522b\u5904\u7406\uff0c\u6bd4\u5982 Padding\u3001Container\u3001TextStyle \u7b49\uff0c\u8fd9\u4f1a\u5bfc\u81f4 UI \u5c42\u7ea7\u66f4\u6df1\u3002\u9879\u76ee\u89c4\u6a21\u53d8\u5927\u540e\uff0c\u5982\u679c\u4e0d\u63d0\u524d\u505a\u597d\u7ec4\u4ef6\u62c6\u5206\uff0c\u7ef4\u62a4\u6210\u672c\u4f1a\u660e\u663e\u4e0a\u5347\u3002<\/p>\n\n\n\n

\u5173\u4e8e\u66f4\u65b0\u673a\u5236\uff0c\u4e24\u8005\u5dee\u5f02\u4e5f\u5f88\u5927\u3002Flutter \u7684 build \u672c\u8d28\u4e0a\u53ea\u662f\u666e\u901a Dart \u65b9\u6cd5\uff0cState \u53d8\u5316\u540e\u4f1a\u91cd\u65b0\u6267\u884c build\uff0c\u7136\u540e\u901a\u8fc7 Widget diff \u673a\u5236\u51b3\u5b9a\u771f\u6b63\u66f4\u65b0\u54ea\u4e9b Element\u3002\u66f4\u65b0\u8303\u56f4\u7684\u63a7\u5236\u66f4\u591a\u4f9d\u8d56\u7ec4\u4ef6\u62c6\u5206\u548c const \u4f18\u5316\uff0c\u800c\u4e0d\u662f Stateful\/Stateless \u672c\u8eab\u3002Compose \u5219\u4f9d\u8d56\u7f16\u8bd1\u5668\u63d2\u6869\u548c\u91cd\u7ec4\u673a\u5236\u81ea\u52a8\u63a8\u65ad\u91cd\u7ec4\u8303\u56f4\uff0c\u7406\u5ff5\u66f4\u504f\u5411\u201c\u8ba9\u6846\u67b6\u5e2e\u4f60\u51b3\u5b9a\u201d\u3002\u4e24\u79cd\u65b9\u5f0f\u5404\u6709\u53d6\u820d\uff0c\u4f46 Flutter \u786e\u5b9e\u9700\u8981\u66f4\u4e3b\u52a8\u5730\u5173\u6ce8 rebuild \u7c92\u5ea6\u3002<\/p>\n\n\n\n

BuildContext \u4e5f\u662f\u4e00\u4e2a\u9002\u5e94\u6210\u672c\u6bd4\u8f83\u9ad8\u7684\u70b9\u3002\u5f88\u591a UI \u76f8\u5173\u64cd\u4f5c\u2014\u2014\u6bd4\u5982\u5f39\u7a97\u3001\u4e3b\u9898\u83b7\u53d6\u3001\u5bfc\u822a\u2014\u2014\u90fd\u4f9d\u8d56\u5b83\u3002\u8de8\u51fd\u6570\u4f20\u9012\u3001\u5f02\u6b65\u573a\u666f\u4e0b\u7684\u5b89\u5168\u4f7f\u7528\u90fd\u9700\u8981\u5c0f\u5fc3\u3002\u4e0d\u8fc7\u4ece\u672c\u8d28\u4e0a\u770b\uff0c\u8fd9\u548c Compose \u5bf9 @Composable \u4f5c\u7528\u57df\u7684\u9650\u5236\u662f\u540c\u4e00\u4e2a\u95ee\u9898\uff1aUI \u64cd\u4f5c\u7684\u8fb9\u754c\u63a7\u5236\u3002\u4e24\u8fb9\u5176\u5b9e\u90fd\u8c08\u4e0d\u4e0a\u5b8c\u7f8e\u3002<\/p>\n\n\n\n

\u8bf4\u5b8c\u8fd9\u4e9b\u9002\u5e94\u6210\u672c\uff0c\u4e5f\u5fc5\u987b\u627f\u8ba4 Flutter \u6709\u4e0d\u5c11\u8ba9\u6211\u60ca\u559c\u7684\u5730\u65b9\u3002\u70ed\u91cd\u8f7d\u548c\u70ed\u91cd\u542f\u7684\u6548\u7387\u975e\u5e38\u9ad8\uff0c\u5728\u771f\u5b9e\u8fd0\u884c\u73af\u5883\u4e0b\u8c03 UI \u6bd4 Preview \u76f4\u89c2\u5f88\u591a\u3002\u914d\u5408 Dart \u7f16\u8bd1\u901f\u5ea6\uff0c\u53cd\u9988\u51e0\u4e4e\u662f\u5373\u65f6\u7684\uff0c\u8fd9\u79cd\u6b63\u5411\u5faa\u73af\u5bf9\u5f00\u53d1\u4f53\u9a8c\u63d0\u5347\u5f88\u660e\u663e\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cGradle \u90a3\u5957\u6d41\u7a0b\u5c31\u663e\u5f97\u6709\u70b9\u6c89\u91cd\u4e86\u3002<\/p>\n\n\n\n

\u8de8\u5e73\u53f0\u4f53\u9a8c\u662f Flutter \u5f88\u5927\u7684\u4f18\u52bf\u3002\u751f\u6001\u91cc\u7684\u5e93\u51e0\u4e4e\u9ed8\u8ba4\u5c31\u662f\u4e3a\u591a\u7aef\u8bbe\u8ba1\u7684\uff0c\u4e0d\u592a\u9700\u8981\u62c5\u5fc3\u5e73\u53f0\u517c\u5bb9\u95ee\u9898\u3002\u4e4b\u524d\u7528 Compose Multiplatform \u65f6\uff0c\u5f88\u591a\u5e93\u5b9e\u9645\u4e0a\u53ea\u9002\u914d Android Compose\uff0c\u8fd8\u5f97\u627e\u66ff\u4ee3\u65b9\u6848\u3002Flutter \u5728\u8fd9\u65b9\u9762\u4e00\u81f4\u6027\u66f4\u597d\uff0cpub \u7684\u5305\u7ba1\u7406\u4f53\u9a8c\u4e5f\u6bd4 Gradle\/Maven \u8f7b\u91cf\u4e0d\u5c11\u3002<\/p>\n\n\n\n

Dart \u8bed\u8a00\u672c\u8eab\u6ca1\u6709 Kotlin \u90a3\u4e48\u201c\u73b0\u4ee3\u611f\u201d\u5f3a\uff0c\u4f46\u5bf9 UI \u5f00\u53d1\u662f\u53cb\u597d\u7684\u3002\u8bed\u6cd5\u7b80\u6d01\u3001\u7ed3\u6784\u6e05\u6670\uff0c\u65b0\u7248\u672c\u7684\u4e00\u4e9b\u8bed\u6cd5\u6539\u8fdb\uff08\u4f8b\u5982 enum \u7b80\u5199\uff09\u4e5f\u5728\u52aa\u529b\u51cf\u5c11\u6837\u677f\u4ee3\u7801\u3002\u867d\u7136\u6574\u4f53\u8868\u8fbe\u4ecd\u7136\u504f\u5570\u55e6\uff0c\u4f46\u901a\u8fc7\u5408\u7406\u62c6\u5206\u7ec4\u4ef6\uff0c\u590d\u6742\u5ea6\u662f\u53ef\u63a7\u7684\u3002<\/p>\n\n\n\n

\u6700\u540e\u662f\u6027\u80fd\u3002Flutter \u7684 Impeller \u6e32\u67d3\u5f15\u64ce\u5728\u79fb\u52a8\u7aef Release \u8868\u73b0\u786e\u5b9e\u4eae\u773c\u3002\u81ea\u7ed8\u4f53\u7cfb\u5e26\u6765\u7684\u53ef\u63a7\u6027\u548c\u7a33\u5b9a\u6027\uff0c\u8ba9\u52a8\u753b\u548c\u7279\u6548\u975e\u5e38\u6d41\u7545\u3002\u76f8\u6bd4\u4e00\u4e9b\u540c\u6837\u57fa\u4e8e Skia \u7684\u8de8\u5e73\u53f0\u65b9\u6848\uff0c\u542f\u52a8\u548c\u6e32\u67d3\u4f53\u9a8c\u90fd\u66f4\u6210\u719f\u4e00\u4e9b\u3002\u8fd9\u4e5f\u662f\u6211\u6700\u7ec8\u89c9\u5f97 Flutter \u66f4\u9002\u5408\u4f5c\u4e3a\u5ba2\u6237\u7aef\u65b9\u6848\u7684\u91cd\u8981\u539f\u56e0\u3002<\/p>\n\n\n\n

0x02 \u5f00\u53d1\u8fc7\u7a0b<\/strong><\/h2>\n\n\n\n

\u771f\u6b63\u5f00\u59cb\u5199 StarForum \u4e4b\u540e\uff0c\u6211\u624d\u53d1\u73b0\uff0c\u8017\u7cbe\u529b\u7684\u5730\u65b9\u5176\u5b9e\u4e0d\u5728 UI\uff0c\u800c\u662f\u5728\u90a3\u4e9b\u4e0d\u592a\u663e\u773c\u7684\u5de5\u7a0b\u7ec6\u8282\u4e0a\uff1aAPI \u5c01\u88c5\u3001\u672c\u5730\u7f13\u5b58\uff0c\u4ee5\u53ca\u542f\u52a8\u9636\u6bb5\u7684\u6570\u636e\u540c\u6b65\u3002<\/p>\n\n\n\n

\u5148\u8bf4 API\u3002Flarum \u7684\u63a5\u53e3\u6587\u6863\u8c08\u4e0d\u4e0a\u5b8c\u5584\uff0c\u4e0d\u8fc7\u597d\u5728\u5b83\u9075\u5faa JSON:API \u89c4\u8303\uff0c\u7ed3\u6784\u6bd4\u8f83\u7edf\u4e00\u3002\u6293\u51e0\u6b21\u5305\u3001\u81ea\u5df1\u8bd5\u51e0\u7ec4\u8bf7\u6c42\u4e4b\u540e\uff0c\u57fa\u672c\u80fd\u628a\u53c2\u6570\u548c\u8fd4\u56de\u7ed3\u6784\u6478\u6e05\u695a\u3002\u4e8e\u662f\u6211\u6309\u7167\u529f\u80fd\u6a21\u5757\u628a\u63a5\u53e3\u62c6\u5f00\u5c01\u88c5\uff0c\u518d\u62bd\u51fa\u4e00\u5c42\u7edf\u4e00\u7684\u8bf7\u6c42\u5305\u88c5\uff0c\u7528\u6765\u5904\u7406\u65e5\u5fd7\u3001\u5f02\u5e38\u3001Cookie \u7ba1\u7406\u8fd9\u4e9b\u901a\u7528\u903b\u8f91\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\u540e\u9762\u6539\u52a8\u4e0d\u4f1a\u7275\u4e00\u53d1\u800c\u52a8\u5168\u8eab\u3002<\/p>\n\n\n\n

\"\"<\/div>
API \u5c01\u88c5\u7ed3\u6784<\/figcaption><\/figure>\n\n\n\n

\u7f51\u7edc\u5c42\u7528\u7684\u662f Dio\u3002\u62e6\u622a\u5668\u673a\u5236\u5f88\u6e05\u6670\uff0c\u8bf7\u6c42\u751f\u547d\u5468\u671f\u4e5f\u6bd4\u8f83\u53ef\u63a7\u3002\u628a GET\u3001POST \u5206\u5f00\u5c01\u88c5\u4e4b\u540e\uff0c\u4f1a\u8bdd\u7ba1\u7406\u5c31\u53d8\u5f97\u6bd4\u8f83\u5e72\u51c0\uff0c\u540e\u9762\u8c03\u8bd5\u95ee\u9898\u4e5f\u66f4\u5bb9\u6613\u5b9a\u4f4d\u3002<\/p>\n\n\n\n

\u8ba4\u8bc1\u8fd9\u4e00\u5757\u7a0d\u5fae\u9ebb\u70e6\u4e00\u70b9\u3002Flarum \u9ed8\u8ba4\u6ca1\u6709\u5355\u72ec\u7684 refresh token \u6d41\u7a0b\uff0c\u6240\u4ee5\u76ee\u524d\u7684\u505a\u6cd5\u662f\uff1a\u5b89\u5168\u5b58\u50a8\u7528\u6237\u51ed\u636e\uff0c\u4e00\u65e6\u63a5\u53e3\u8fd4\u56de 401\uff0c\u5c31\u91cd\u65b0\u767b\u5f55\u83b7\u53d6\u65b0 Token\u3002\u662f\u5426\u5931\u6548\u7684\u5224\u65ad\u65b9\u5f0f\u4e5f\u5f88\u76f4\u63a5\u2014\u2014\u8bf7\u6c42 \/users\uff0c\u5982\u679c 401\uff0c\u5c31\u8ba4\u4e3a\u767b\u5f55\u6001\u8fc7\u671f\u3002\u8fd9\u663e\u7136\u7b97\u4e0d\u4e0a\u4f18\u96c5\uff0c\u53ea\u662f\u4e00\u4e2a\u80fd\u5de5\u4f5c\u7684\u8fc7\u6e21\u65b9\u6848\u3002\u7b49\u540e\u9762\u505a\u901a\u77e5\u6216\u8005\u66f4\u590d\u6742\u7684\u767b\u5f55\u6001\u903b\u8f91\uff0c\u80af\u5b9a\u8981\u628a\u8fd9\u5757\u91cd\u6784\u6389\u3002<\/p>\n\n\n\n

\u7136\u540e\u662f\u672c\u5730\u7f13\u5b58\u3002\u8d34\u6587\u5217\u8868\u5982\u679c\u6bcf\u6b21\u90fd\u5168\u91cf\u8bf7\u6c42\uff0c\u9996\u5c4f\u4f53\u9a8c\u4f1a\u975e\u5e38\u5dee\uff0c\u6240\u4ee5\u6211\u7528 sqflite \u505a\u4e86\u4e00\u4e2a\u672c\u5730 SQLite \u7f13\u5b58\u3002\u62ff\u5230\u8d34\u6587\u6458\u8981\u4e4b\u540e\u76f4\u63a5\u843d\u76d8\uff0c\u4e0b\u6b21\u542f\u52a8\u4f18\u5148\u5c55\u793a\u672c\u5730\u6570\u636e\uff0c\u518d\u505a\u589e\u91cf\u540c\u6b65\u3002<\/p>\n\n\n\n

\u8fd9\u91cc\u8e29\u7684\u4e00\u4e2a\u70b9\u662f\uff1aFlarum \u7684\u5217\u8868\u63a5\u53e3\u4e0d\u4f1a\u76f4\u63a5\u7ed9\u201c\u7b80\u4ecb\u201d\uff0c\u800c\u662f\u9700\u8981 include firstPost\uff0c\u7136\u540e\u81ea\u5df1\u622a\u65ad\u3002\u73b0\u5728\u7684\u5b9e\u73b0\u662f\u76f4\u63a5\u8bf7\u6c42\u5b8c\u6574\u9996\u5e16\u5185\u5bb9\u518d\u88c1\u526a\uff0c\u903b\u8f91\u7b80\u5355\uff0c\u4f46\u8bf7\u6c42\u4f53\u504f\u5927\u3002\u540e\u7eed\u53ef\u4ee5\u8003\u8651\u5b57\u6bb5\u7cbe\u7b80\u6216\u8005\u5ef6\u8fdf\u52a0\u8f7d\uff0c\u5426\u5219\u5217\u8868\u9875\u7684\u7f51\u7edc\u8d1f\u62c5\u59cb\u7ec8\u504f\u91cd\u3002<\/p>\n\n\n\n

\u7f13\u5b58\u5e26\u6765\u7684\u53e6\u4e00\u4e2a\u95ee\u9898\u662f\u6570\u636e\u4e00\u81f4\u6027\u3002\u670d\u52a1\u5668\u5220\u5e16\u4e4b\u540e\uff0c\u672c\u5730\u8fd8\u5728\u3002\u6211\u7684\u5904\u7406\u65b9\u5f0f\u662f\u589e\u52a0\u4e00\u4e2a\u201c\u6700\u540e\u540c\u6b65\u65f6\u95f4\u201d\u5b57\u6bb5\uff0c\u5728\u6bcf\u6b21\u540c\u6b65\u65f6\u505a\u6bd4\u5bf9\uff1b\u957f\u65f6\u95f4\u672a\u66f4\u65b0\u4e14\u670d\u52a1\u5668\u5217\u8868\u4e2d\u5df2\u4e0d\u5b58\u5728\u7684\u8bb0\u5f55\uff0c\u4f1a\u88ab\u6807\u8bb0\u4e3a\u5220\u9664\u3002\u903b\u8f91\u4e0a\u6709\u70b9\u50cf RSS \u5ba2\u6237\u7aef\u7684\u7f13\u5b58\u7b56\u7565\u2014\u2014\u4e0d\u662f\u8ffd\u6c42\u7edd\u5bf9\u5b9e\u65f6\uff0c\u800c\u662f\u4fdd\u8bc1\u6574\u4f53\u53ef\u63a7\u3002<\/p>\n\n\n\n

\u6700\u540e\u662f\u542f\u52a8\u9636\u6bb5\u7684\u6570\u636e\u540c\u6b65\u3002\u7528\u6237\u4fe1\u606f\u3001\u6807\u7b7e\u5217\u8868\u3001\u8d34\u6587\u6570\u636e\u3001\u767b\u5f55\u72b6\u6001\uff0c\u8fd9\u4e9b\u4e1c\u897f\u4e4b\u95f4\u591a\u5c11\u6709\u70b9\u4f9d\u8d56\u5173\u7cfb\u3002\u5982\u679c\u5904\u7406\u4e0d\u597d\uff0c\u5f88\u5bb9\u6613\u51fa\u73b0 UI \u5148\u6e32\u67d3\u3001\u6570\u636e\u540e\u5230\u4f4d\u7684\u9519\u4f4d\u611f\u3002\u76ee\u524d\u7684\u5b9e\u73b0\u6bd4\u8f83\u4fdd\u5b88\uff1a\u901a\u8fc7\u7b80\u5355\u7684\u52a0\u8f7d\u9875\u548c\u8bf7\u6c42\u6392\u5e8f\u4fdd\u8bc1\u72b6\u6001\u5b8c\u6574\uff0c\u518d\u653e UI \u51fa\u6765\u3002<\/p>\n\n\n\n

\u5b83\u80fd\u5de5\u4f5c\uff0c\u4f46\u4e0d\u591f\u4f18\u96c5\u3002\u540e\u7eed\u6253\u7b97\u505a\u8bf7\u6c42\u5408\u6279\u548c\u5e76\u53d1\u8c03\u5ea6\uff0c\u628a\u6ca1\u6709\u4f9d\u8d56\u5173\u7cfb\u7684\u8bf7\u6c42\u5e76\u884c\u5316\uff0c\u7f29\u77ed\u51b7\u542f\u52a8\u65f6\u95f4\u3002\u76f8\u6bd4\u529f\u80fd\u5f00\u53d1\uff0c\u8fd9\u79cd\u201c\u6d41\u7a0b\u6253\u78e8\u201d\u66f4\u82b1\u65f6\u95f4\uff0c\u4e5f\u66f4\u8003\u9a8c\u8010\u5fc3\u3002<\/p>\n\n\n\n

\u56de\u5934\u770b\u8fd9\u4e00\u90e8\u5206\uff0c\u4f1a\u53d1\u73b0\u5b83\u6bd4 UI \u590d\u6742\u5f97\u591a\u3002UI \u662f\u53ef\u89c1\u7684\uff0c\u80fd\u7acb\u523b\u770b\u5230\u7ed3\u679c\uff1b\u800c\u8fd9\u4e9b\u5de5\u7a0b\u5c42\u9762\u7684\u8bbe\u8ba1\uff0c\u66f4\u591a\u662f\u5728\u4e3a\u540e\u9762\u57cb\u5730\u57fa\u3002\u770b\u4e0d\u89c1\uff0c\u4f46\u5f71\u54cd\u5f88\u957f\u8fdc\u3002<\/p>\n\n\n\n

0x03 \u8c03\u8bd5\u548c\u4f18\u5316<\/strong><\/h2>\n\n\n\n

\u771f\u6b63\u5f00\u59cb\u4f18\u5316\uff0c\u662f\u5728\u529f\u80fd\u5dee\u4e0d\u591a\u9f50\u4e86\u4e4b\u540e\u3002\u90a3\u65f6\u5019\u5e94\u7528\u201c\u80fd\u8dd1\u201d\uff0c\u4f46\u8fd8\u8c08\u4e0d\u4e0a\u8212\u670d\u3002\u79fb\u52a8\u7aef\u5076\u5c14\u6389\u5e27\uff0cPC \u7aef\u5185\u5b58\u66f2\u7ebf\u4e5f\u4e0d\u592a\u597d\u770b\u3002\u8bf4\u5b9e\u8bdd\uff0c\u6211\u5bf9 Flutter \u7684\u6027\u80fd\u673a\u5236\u8fd8\u8c08\u4e0d\u4e0a\u719f\u6089\uff0c\u53ea\u80fd\u4e00\u8fb9\u770b DevTools\uff0c\u4e00\u8fb9\u4e00\u70b9\u70b9\u8bd5\u3002<\/p>\n\n\n\n

\"\"<\/div>
\u8c03\u8bd5\u5668<\/figcaption><\/figure>\n\n\n\n

\u6162\u6162\u4f1a\u53d1\u73b0\uff0cFlutter \u7684\u4f18\u5316\u5176\u5b9e\u6ca1\u6709\u90a3\u4e48\u795e\u79d8\u3002\u5f88\u591a\u95ee\u9898\u90fd\u96c6\u4e2d\u5728\u4e00\u4e2a\u70b9\u4e0a\uff1a\u4e0d\u5fc5\u8981\u7684 rebuild \u548c repaint\u3002<\/p>\n\n\n\n

\u4e00\u5f00\u59cb\u5199 UI \u65f6\uff0c\u4e3a\u4e86\u56fe\u7701\u4e8b\uff0c\u4f1a\u628a\u7ed3\u6784\u5806\u5f97\u5f88\u5927\u3002\u7b49\u6570\u636e\u91cf\u4e00\u4e0a\u6765\uff0c\u5e27\u7387\u5c31\u5f00\u59cb\u6ce2\u52a8\u3002\u540e\u6765\u505a\u7684\u7b2c\u4e00\u4ef6\u4e8b\u5c31\u662f\u628a Widget \u6811\u62c6\u5c0f\uff0c\u628a\u5bb9\u6613\u53d8\u5316\u7684\u90e8\u5206\u5355\u72ec\u62bd\u51fa\u6765\u3002\u8fd9\u6837\u72b6\u6001\u66f4\u65b0\u65f6\uff0c\u91cd\u5efa\u8303\u56f4\u81ea\u7136\u5c31\u88ab\u9650\u5236\u4f4f\u4e86\u3002const \u4e5f\u6bd4\u60f3\u8c61\u4e2d\u91cd\u8981\uff0c\u5b83\u80fd\u8ba9\u6846\u67b6\u660e\u786e\u77e5\u9053\u54ea\u4e9b\u8282\u70b9\u662f\u7a33\u5b9a\u7684\uff0c\u4ece\u800c\u8df3\u8fc7\u65e0\u610f\u4e49\u7684 diff\u3002<\/p>\n\n\n\n

RepaintBoundary \u662f\u540e\u6765\u624d\u610f\u8bc6\u5230\u8981\u7528\u7684\u4e1c\u897f\u3002\u5e76\u4e0d\u662f\u6240\u6709 rebuild \u90fd\u4f1a\u5e26\u6765\u91cd\u7ed8\uff0c\u4f46\u4e00\u65e6\u6d89\u53ca\u590d\u6742\u7ed8\u5236\u533a\u57df\uff0c\u9694\u79bb repaint \u7684\u6548\u679c\u8fd8\u662f\u5f88\u660e\u663e\u3002\u5c24\u5176\u662f\u5217\u8868\u4e2d\u5e26\u56fe\u7247\u6216\u590d\u6742\u5e03\u5c40\u7684 item\uff0c\u5982\u679c\u4e0d\u9694\u79bb\uff0c\u6eda\u52a8\u65f6\u7684\u538b\u529b\u4f1a\u88ab\u653e\u5927\u3002<\/p>\n\n\n\n

\u957f\u5217\u8868\u7684\u4f18\u5316\u662f\u6700\u76f4\u89c2\u7684\u3002\u6700\u65e9\u7528\u666e\u901a Column \u76f4\u63a5\u6e32\u67d3\u5168\u90e8\u6570\u636e\uff0c\u6570\u636e\u4e00\u591a\uff0c\u5e27\u7387\u51e0\u4e4e\u662f\u8089\u773c\u53ef\u89c1\u5730\u4e0b\u6ed1\u3002\u6539\u6210 ListView.builder \u4e4b\u540e\u60c5\u51b5\u7acb\u523b\u597d\u8f6c\uff0c\u672c\u8d28\u4e0a\u548c Compose \u91cc\u7684 LazyColumn \u662f\u4e00\u6837\u7684\u601d\u8def\u2014\u2014\u53ea\u6784\u5efa\u53ef\u89c1\u533a\u57df\u3002\u90a3\u4e00\u523b\u4f1a\u7a81\u7136\u7406\u89e3\uff1a\u58f0\u660e\u5f0f\u4e0d\u7b49\u4e8e\u53ef\u4ee5\u5ffd\u7565\u7ed3\u6784\u6210\u672c\u3002<\/p>\n\n\n\n

\u8c03\u8bd5\u4e3b\u8981\u4f9d\u8d56 DevTools \u770b rebuild \u6b21\u6570\u3001Raster \u65f6\u95f4\u548c\u5185\u5b58\u53d8\u5316\u3002Flutter \u7684\u5de5\u5177\u5df2\u7ecf\u591f\u7528\uff0c\u4f46\u76f8\u6bd4 Android Studio \u90a3\u5957\u6210\u719f\u7684\u4f53\u7cfb\uff0c\u7ec6\u8282\u4e0a\u8fd8\u662f\u7a0d\u5fae\u7c97\u7cd9\u4e00\u70b9\u3002\u590d\u6742 rebuild \u7684\u6765\u6e90\u6709\u65f6\u4e0d\u592a\u76f4\u89c2\uff0c\u9700\u8981\u81ea\u5df1\u591a\u505a\u51e0\u6b21\u5b9e\u9a8c\u624d\u80fd\u6478\u6e05\u3002<\/p>\n\n\n\n

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\u5305\u4f53\u4f18\u5316\u5219\u76f8\u5bf9\u76f4\u63a5\u4e00\u4e9b\u3002\u88c1\u526a\u65e0\u7528\u8d44\u6e90\u3001\u5f00\u542f –tree-shake-icons\u3001\u5206 ABI \u6253\u5305\u3001\u5f00\u542f\u6df7\u6dc6\u538b\u7f29\u3002\u4f18\u5316\u524d Android APK \u5728 50MB \u5de6\u53f3\uff0c\u5904\u7406\u4e4b\u540e\u80fd\u538b\u5230 20MB \u5de6\u53f3\u3002\u5bf9\u4e00\u4e2a\u5e26\u672c\u5730\u6570\u636e\u5e93\u548c\u7f51\u7edc\u6a21\u5757\u7684\u5e94\u7528\u6765\u8bf4\uff0c\u8fd9\u4e2a\u4f53\u79ef\u5df2\u7ecf\u6bd4\u8f83\u7406\u60f3\u4e86\u3002<\/p>\n\n\n\n

\u56de\u8fc7\u5934\u770b\uff0c\u4f18\u5316\u7684\u8fc7\u7a0b\u5176\u5b9e\u548c\u524d\u9762\u505a\u67b6\u6784\u8bbe\u8ba1\u662f\u8fde\u5728\u4e00\u8d77\u7684\u3002\u5982\u679c\u7ed3\u6784\u672c\u8eab\u6df7\u4e71\uff0c\u540e\u9762\u518d\u600e\u4e48\u8c03\u53c2\u6570\u4e5f\u6551\u4e0d\u4e86\uff1b\u5982\u679c\u7ed3\u6784\u6e05\u6670\uff0c\u5f88\u591a\u6027\u80fd\u95ee\u9898\u53ea\u9700\u8981\u7a0d\u5fae\u6253\u78e8\u4e00\u4e0b\u5c31\u80fd\u7a33\u5b9a\u4e0b\u6765\u3002<\/p>\n\n\n\n

Flutter \u7ed9\u6211\u7684\u4e00\u4e2a\u611f\u53d7\u662f\uff0c\u5b83\u7684\u6027\u80fd\u4e0b\u9650\u5176\u5b9e\u4e0d\u4f4e\u3002\u53ea\u8981\u5199\u6cd5\u522b\u592a\u968f\u610f\uff0cRelease \u7248\u672c\u901a\u5e38\u90fd\u80fd\u7ed9\u51fa\u4e00\u4e2a\u4e0d\u9519\u7684\u8868\u73b0\u3002\u800c\u771f\u6b63\u5f71\u54cd\u4f53\u9a8c\u7684\uff0c\u66f4\u591a\u662f\u4f60\u5bf9\u72b6\u6001\u8fb9\u754c\u548c\u6570\u636e\u6d41\u7684\u63a7\u5236\u80fd\u529b\uff0c\u800c\u4e0d\u662f\u67d0\u4e2a\u201c\u795e\u79d8\u4f18\u5316\u6280\u5de7\u201d\u3002<\/p>\n\n\n\n

0x04 \u603b\u7ed3<\/strong><\/h2>\n\n\n\n

\u56de\u8fc7\u5934\u770b\uff0c\u8fd9\u6b21\u4ece Compose \u8f6c\u5230 Flutter\uff0c\u5176\u5b9e\u6ca1\u6709\u60f3\u8c61\u4e2d\u90a3\u4e48\u96be\u3002<\/p>\n\n\n\n

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