{"id":1297,"date":"2026-09-14T14:57:52","date_gmt":"2026-09-14T14:57:52","guid":{"rendered":"https:\/\/boochlin.com\/?p=1297"},"modified":"2026-09-19T16:21:26","modified_gmt":"2026-09-19T16:21:26","slug":"funny-vote-app-modern-android-%e7%95%ab%e9%9d%a2%e5%be%a9%e5%88%bb%e8%88%87%e5%be%8c%e7%ab%af%e6%96%b7%e7%82%8a%e9%9b%9c%e8%a8%98%ef%bc%88%e5%9b%9b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/boochlin.com\/?p=1297","title":{"rendered":"Funny vote APP \u2013 \u70ba\u4e86\u89e3\u6c7a\u72c0\u614b\u6253\u67b6\uff1a\u76f4\u4e0a MVI \u55ae\u5411\u6d41\u8207\u62ef\u6551\u767d\u5c4f\u707d\u96e3\uff08\u4e94\uff09"},"content":{"rendered":"<div class=\"wp-block-group\" style=\"border-left:4px solid #C14420;background:#f8f9fa;padding:14px 18px;margin-bottom:28px;border-radius:0 6px 6px 0\">\n<p style=\"margin:0;font-size:0.95em;color:#444\">\n    \u672c\u6587\u70ba<strong>\u300aFunny Vote \u5341\u5e74\u6f14\u9032\u7cfb\u5217\u300b<\/strong>\u7b2c 5 \u7bc7\uff08\u5168\u7cfb\u5217\u5171 8 \u7bc7\uff09\uff5c<a href=\"https:\/\/boochlin.com\/?page_id=1319\" style=\"font-weight:bold;color:#C14420;text-decoration:underline\">\u67e5\u770b\u5168\u7cfb\u5217\u67b6\u69cb\u5c0e\u89bd<\/a>\n  <\/p>\n<\/div>\n<p><img decoding=\"async\" src=\"..\/..\/assets\/images\/post1297_mvi_banner.png\" alt=\"Funny Vote MVI \u55ae\u5411\u6d41\u65d7\u8266\u5c01\u9762\"><\/p>\n<p>\u63a5\u7e8c\u4e0a\u4e00\u7bc7\u7684\u6158\u75db\u6559\u8a13\u3002<\/p>\n<p>\u4e0a\u4e00\u7bc7\u6211\u5011\u804a\u5230\u4e86\u628a\u5341\u5e74\u524d\u7684\u820a\u77f3\u5668 XML \u62c6\u6389\u3001\u5168\u9762\u63db\u4e0a Jetpack Compose \u7684\u723d\u5ea6\uff0c\u4ee5\u53ca\u5728\u5be6\u6a5f\u9ad8\u5237\u87a2\u5e55\u4e0a\u88ab\u5168\u91cf\u91cd\u7d44\u8207\u5929\u771f Sealed Class \u6bd2\u6253\u7684\u6158\u6cc1\u3002<\/p>\n<p>\u7279\u5225\u662f\u7d50\u5c3e\u63d0\u5230\u7684\u90a3\u500b\u7d93\u5178\u7ffb\u8eca\u73fe\u5834\uff1a\u4f7f\u7528\u8005\u624b\u6307\u8f15\u8f15\u5f80\u4e0b\u4e00\u62c9\u60f3\u5237\u65b0\u5217\u8868\uff0cViewModel \u8208\u6c96\u6c96\u767c\u5c04\u4e86\u4e00\u500b <code>MainUiState.Loading<\/code>\uff0c\u7d50\u679c UI \u88e1\u7684 <code>when (state)<\/code> \u689d\u4ef6\u53cd\u5c04\u4f3c\u5730\u7576\u5834\u628a\u6574\u500b\u6295\u7968\u5217\u8868\u9023\u6839\u62d4\u8d77\uff0c\u756b\u9762\u77ac\u9593\u4e00\u7247\u6b7b\u767d\uff0c\u6b63\u4e2d\u592e\u7559\u4e00\u9846\u5b64\u7368\u7684\u5c0f\u83ca\u82b1\u5728\u90a3\u908a\u7a7a\u8f49\u2014\u2014\u7b49\u534a\u79d2\u5f8c\u8cc7\u6599\u6293\u56de\u4f86\u4e86\uff0c\u756b\u9762\u53c8\u731b\u7136\u5f48\u56de\u5217\u8868\u3002<\/p>\n<p>\u6211\u5728\u5de5\u4f4d\u4e0a\u6e2c\u5230\u9019\u500b Bug \u6642\uff0c\u81ea\u5df1\u90fd\u89ba\u5f97\u9019\u9ad4\u9a57\u7c21\u76f4\u8822\u5230\u54ed\u51fa\u4f86\u3002\u5982\u679c\u9019\u662f\u6b63\u5f0f\u4e0a\u7dda\u7684\u7522\u54c1\uff0c\u4f7f\u7528\u8005\u80af\u5b9a\u7acb\u523b\u522a App \u8dd1\u53bb Google Play \u5237\u4e00\u9846\u661f\u3002<\/p>\n<p>\u8eab\u70ba\u4e00\u500b\u4fe1\u5949\u300c\u5148\u52d5\u624b\u518d\u8aaa\uff0c\u4e0d\u7136\u5634\u5df4\u8aaa\u518d\u591a\u4e5f\u6c92\u5c41\u7528\u300d\u7684\u5de5\u7a0b\u5e2b\uff0c\u9019\u7a2e\u5de8\u5b30\u7d1a\u5225\u7684\u767d\u5c4f\u707d\u96e3\u986f\u7136\u4e0d\u80fd\u7559\u8457\u904e\u591c\u3002\u65bc\u662f\uff0c\u6211\u62c9\u51fa\u4e86 <code>mvi-rewrite<\/code> \u5206\u652f\uff0c\u4e0b\u5b9a\u6c7a\u5fc3\u8df3\u904e\u90a3\u4e9b\u770b\u4f3c\u751c\u7f8e\u5be6\u5247\u72c0\u614b\u6eff\u5929\u98db\u7684\u50b3\u7d71 MVVM\uff0c\u76f4\u5954\u56b4\u683c\u7684 <strong>MVI\uff08Model-View-Intent\uff09\u55ae\u5411\u8cc7\u6599\u6d41\uff08Unidirectional Data Flow, UDF\uff09<\/strong>\u3002<\/p>\n<p>\u60f3\u770b\u5206\u652f\u771f\u5be6\u539f\u59cb\u78bc\u7684\uff0cGitHub \u50b3\u9001\u9580\u653e\u5728\u9019\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/github.com\/boochlin06\/FunnyVote\/tree\/mvi-rewrite\">Funny Vote mvi-rewrite UDF \u55ae\u5411\u6d41\u5206\u652f<\/a><\/li>\n<\/ul>\n<hr>\n<h2>1. \u72c0\u614b\u6495\u88c2\uff08State Tearing\uff09\uff1a\u50b3\u7d71 MVVM \u662f\u600e\u9ebc\u628a\u4eba\u641e\u760b\u7684\uff1f<\/h2>\n<p>\u5728\u958b\u59cb\u52d5\u624b\u8853\u4e4b\u524d\uff0c\u6211\u5011\u5148\u4f86\u76e4\u9ede\u4e00\u4e0b\u70ba\u4ec0\u9ebc\u50b3\u7d71 MVVM \u5728\u5ba3\u544a\u5f0f UI \u9762\u524d\u6703\u986f\u5f97\u5982\u6b64\u84bc\u767d\u7121\u529b\u3002<\/p>\n<p>\u904e\u53bb\u5728\u5beb\u50b3\u7d71 MVVM \u6642\uff0c\u4e3b\u6d41\u7684\u516c\u7248\u6559\u5b78\u6700\u559c\u6b61\u5728 ViewModel \u88e1\u958b\u51fa\u300c\u5404\u81ea\u70ba\u653f\u300d\u7684\u591a\u500b\u72c0\u614b\u6d41\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ \u50b3\u7d71 MVVM \u88e1\u6eff\u5730\u958b\u82b1\u7684\u72c0\u614b\u6d41\uff1a\u72c0\u614b\u6495\u88c2\u7684\u6eab\u5e8a\nclass LegacyHomeViewModel : ViewModel() {\n    val isLoading = MutableStateFlow(false)\n    val voteList = MutableStateFlow&lt;List&lt;VoteData&gt;&gt;(emptyList())\n    val errorMessage = MutableStateFlow&lt;String?&gt;(null)\n    val toastMessage = MutableSharedFlow&lt;String&gt;()\n}\n<\/code><\/pre>\n<p>\u9019\u7a2e\u5beb\u6cd5\u5728\u6975\u5ea6\u7c21\u55ae\u7684\u6559\u5b78\u7bc4\u4f8b\u88e1\u770b\u4f3c\u689d\u7406\u6e05\u6670\uff0c\u4f46\u5728\u771f\u5be6\u7522\u54c1\u7684\u8907\u96dc\u4e26\u767c\u60c5\u5883\u4e0b\uff0c\u7c21\u76f4\u5c31\u662f\u4e00\u5834\u60e1\u5922\u3002<\/p>\n<p>\u60f3\u50cf\u4e00\u4e0b\u9019\u500b\u5de5\u4f4d\u65e5\u5e38\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528\u8005\u9032\u9801\u9762\uff0c<code>isLoading<\/code> \u8b8a\u6210 <code>true<\/code>\u3002<\/li>\n<li>\u7db2\u8def\u7a0d\u5fae\u6296\u52d5\u4e86\u4e00\u4e0b\uff0cAPI \u903e\u6642\u62cb\u51fa\u4f8b\u5916\uff0c\u5354\u7a0b\u6293\u5230\u932f\u8aa4\uff0c\u5c07 <code>errorMessage<\/code> \u8a2d\u70ba <code>&quot;\u7db2\u8def\u9023\u7dda\u903e\u6642&quot;<\/code>\u3002<\/li>\n<li>\u4f46\u8207\u6b64\u540c\u6642\uff0c\u672c\u5730 Room \u8cc7\u6599\u5eab\u7684\u5feb\u53d6 Flow \u525b\u597d\u8f09\u5165\u5b8c\u7562\uff0c\u628a\u820a\u7684\u5341\u7b46\u8cc7\u6599\u585e\u7d66\u4e86 <code>voteList<\/code>\u3002<\/li>\n<li>\u66f4\u6158\u7684\u662f\uff0c\u4f7f\u7528\u8005\u5728\u80cc\u666f\u9ede\u4e86\u67d0\u5f35\u5361\u7247\uff0c\u89f8\u767c\u4e86 <code>toastMessage<\/code>\u3002<\/li>\n<\/ol>\n<p>\u56e0\u70ba\u9019\u4e9b <code>StateFlow<\/code> \u662f\u7368\u7acb\u767c\u5c04\u7684\uff0c\u5728 Compose \u97ff\u61c9\u91cd\u65b0\u7e6a\u88fd\u7684\u77ac\u9593\uff0c\u756b\u9762\u51fa\u73fe\u4e86\u6975\u5ea6\u8352\u8b2c\u7684\u4e00\u5e55\uff1a<strong>\u9802\u90e8\u8f49\u5708\u5708\u9084\u5728\u8f49\u3001\u4e2d\u592e\u5f48\u51fa\u4e86\u7d05\u5b57\u932f\u8aa4\u8a0a\u606f\u3001\u5e95\u5c64\u537b\u6574\u6574\u9f4a\u9f4a\u6392\u8457\u5341\u7b46\u820a\u8cc7\u6599\uff0c\u87a2\u5e55\u4e0b\u65b9\u9084\u5728\u8df3 Toast\uff01<\/strong><\/p>\n<p>\u9019\u5c31\u662f\u6240\u8b02\u7684 <strong>\u300c\u72c0\u614b\u6495\u88c2 (State Tearing)\u300d<\/strong>\u3002<\/p>\n<p>\u56e0\u70ba\u6c92\u6709\u4e00\u500b\u7d71\u4e00\u7684\u4e8b\u5be6\u4f86\u6e90\uff0c\u6bcf\u500b\u5c6c\u6027\u90fd\u5728\u5404\u81ea\u7684\u6642\u9593\u8ef8\u4e0a\u8df3\u52d5\uff0c\u4f60\u7684\u756b\u9762\u5728\u4e26\u767c\u7af6\u722d\u4e0b\u76f4\u63a5\u4eba\u683c\u5206\u88c2\u3002<\/p>\n<hr>\n<h2>2. \u6838\u5fc3\u6551\u8d16\uff1a\u55ae\u4e00\u4e0d\u53ef\u8b8a\u72c0\u614b\u5bb9\u5668\uff08Single Immutable State\uff09<\/h2>\n<p>\u8981\u5fb9\u5e95\u7d42\u7d50\u9019\u7a2e\u72c0\u614b\u6495\u88c2\u8207\u4e0b\u62c9\u5237\u65b0\u6642\u7684\u767d\u5c4f\u6158\u5287\uff0c\u89e3\u6cd5\u53ea\u6709\u4e00\u500b\uff1a<strong>\u5c07\u6574\u500b\u756b\u9762\u7684\u6240\u6709\u7dad\u5ea6\uff0c\u6536\u6582\u9032\u552f\u4e00\u7684\u4e00\u500b\u4e0d\u53ef\u8b8a\u5bb9\u5668\uff08Single Source of Truth, SSOT\uff09\u4e2d\u3002<\/strong><\/p>\n<p>\u5728 <code>mvi-rewrite<\/code> \u5206\u652f\u88e1\uff0c\u6211\u628a\u6563\u843d\u4e00\u5730\u7684\u72c0\u614b\u6253\u5305\u6210\u9019\u9846\u4e7e\u6de8\u4fd0\u843d\u7684 <code>HomeUiState<\/code>\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ 2024 \u5e74\u5728 mvi-rewrite \u88e1\u7684\u771f\u5be6\u72c0\u614b\u5bb9\u5668\uff1a\u552f\u4e00\u771f\u76f8\u4f86\u6e90\ndata class HomeUiState(\n    val isLoading: Boolean = false,       \/\/ \u9996\u6b21\u5168\u5c4f\u52a0\u8f09\n    val isRefreshing: Boolean = false,    \/\/ \u4e0b\u62c9\u5237\u65b0\u6307\u793a\n    val hotVotes: List&lt;VoteData&gt; = emptyList(), \/\/ \u6295\u7968\u5217\u8868\uff08\u820a\u8cc7\u6599\u6c38\u9060\u7559\u5b58\uff09\n    val errorMessage: String? = null      \/\/ \u696d\u52d9\u932f\u8aa4\u63d0\u793a\n) : UiState\n<\/code><\/pre>\n<p>\u5927\u5bb6\u4ed4\u7d30\u770b\u4e00\u4e0b\u9019\u88e1\u7684\u5169\u500b\u95dc\u9375\u65d7\u6a19\uff1a<code>isLoading<\/code> \u8207 <code>isRefreshing<\/code>\u3002<\/p>\n<p>\u9019\u5169\u500b\u5e03\u6797\u503c\u7684\u62c6\u5206\uff0c\u6b63\u662f\u62ef\u6551\u5168\u5c4f\u767d\u5c4f\u7684\u9748\u9b42\u6240\u5728\uff1a<\/p>\n<ul>\n<li><strong>\u9996\u6b21\u9032\u5165\u9801\u9762\u6642<\/strong>\uff1a<code>isLoading = true<\/code>\uff0c<code>hotVotes<\/code> \u70ba\u7a7a\uff0c\u9019\u6642\u5019\u5c55\u793a\u4e2d\u592e\u8f49\u5708\u5708\u5408\u60c5\u5408\u7406\uff1b<\/li>\n<li><strong>\u4f7f\u7528\u8005\u4e0b\u62c9\u5237\u65b0\u6642<\/strong>\uff1a\u6211\u5011\u767c\u5c04\u65b0\u72c0\u614b\uff0c\u5c07 <code>isRefreshing<\/code> \u8a2d\u70ba <code>true<\/code>\uff0c<strong>\u4f46\u539f\u672c\u7684 <code>hotVotes<\/code> \u6beb\u9aee\u7121\u50b7\u5730\u4fdd\u7559\u5728\u539f\u5730\uff01<\/strong><\/li>\n<\/ul>\n<p>\u56de\u5230 Compose \u756b\u9762\u7684\u6e32\u67d3\u5c64\uff0c\u6211\u5011\u7684\u5beb\u6cd5\u5fb9\u5e95\u8b8a\u6210\u4e86\u512a\u96c5\u7684\u5716\u5c64\u758a\u52a0\uff0c\u800c\u4e0d\u662f\u66b4\u529b\u7684\u5206\u652f\u6e05\u7a7a\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ \u544a\u5225 when(state) \u7684\u7c97\u66b4\u6e05\u7a7a\uff0c\u63a1\u7528\u771f\u6b63\u7684\u5716\u5c64\u6295\u5f71\n@Composable\nfun HomeScreen(state: HomeUiState, onIntent: (HomeUiIntent) -&gt; Unit) {\n    Box(modifier = Modifier.fillMaxSize()) {\n        \/\/ 1. \u5e95\u5c64\uff1a\u53ea\u8981\u6709\u8cc7\u6599\uff0c\u820a\u5217\u8868\u5c31\u7a69\u5982\u6cf0\u5c71\u91d8\u5728\u756b\u9762\u4e0a\n        if (state.hotVotes.isNotEmpty()) {\n            VoteList(votes = state.hotVotes, onVoteClick = { ... })\n        }\n\n        \/\/ 2. \u9802\u5c64\uff1a\u9996\u6b21\u52a0\u8f09\u7684\u4e2d\u592e\u8f49\u5708\u5708\n        if (state.isLoading &amp;&amp; state.hotVotes.isEmpty()) {\n            CircularProgressIndicator(modifier = Modifier.align(Alignment.Center))\n        }\n\n        \/\/ 3. \u4e0b\u62c9\u5237\u65b0\uff1a\u9802\u90e8\u539f\u751f Material 3 \u5237\u65b0\u6307\u793a\u689d\n        PullToRefreshContainer(\n            isRefreshing = state.isRefreshing,\n            modifier = Modifier.align(Alignment.TopCenter)\n        )\n    }\n}\n<\/code><\/pre>\n<p>\u4f7f\u7528\u8005\u624b\u6307\u4e0b\u62c9\uff0c\u9802\u90e8\u6307\u793a\u5668\u5e73\u6ed1\u6ed1\u51fa\u65cb\u8f49\uff1b\u8cc7\u6599\u56de\u4f86\u5f8c\uff0c\u72c0\u614b\u539f\u5b50\u66f4\u65b0\uff08Atomic Update\uff09\uff0c\u5217\u8868\u5167\u5bb9\u7121\u7e2b\u66ff\u63db\uff0c\u9802\u90e8\u6307\u793a\u5668\u512a\u96c5\u6536\u56de\u3002<\/p>\n<p><strong>\u5168\u5c4f\u767d\u5c4f\uff1f\u4e0d\u5b58\u5728\u7684\u3002\u9583\u720d\u5361\u9813\uff1f\u5fb9\u5e95\u62dc\u62dc\u3002<\/strong><\/p>\n<hr>\n<h2>3. \u526f\u4f5c\u7528\u9694\u96e2\uff1a\u628a Toast \u8207\u5c0e\u822a\u9010\u51fa\u72c0\u614b\u6a39<\/h2>\n<p>\u641e\u5b9a\u4e86\u72c0\u614b\u5bb9\u5668\uff0c\u4e0b\u4e00\u500b\u5dee\u9ede\u628a\u5de5\u7a0b\u5e2b\u641e\u760b\u7684\u5751\u662f\uff1a<strong>\u4e00\u6b21\u6027\u526f\u4f5c\u7528\uff08Side-effects\uff09<\/strong>\u3002<\/p>\n<p>\u5728 Android \u958b\u767c\u88e1\uff0c\u6709\u4e9b\u4e8b\u60c5\u4e0d\u662f\u300c\u72c0\u614b\u300d\uff0c\u800c\u662f\u4e00\u6b21\u6027\u7684\u300c\u4e8b\u4ef6\u300d\uff1a\u4f8b\u5982\u5f48\u51fa SnackBar\u3001\u8df3 Toast\u3001\u6216\u662f\u9ede\u64ca\u5361\u7247\u8df3\u8f49\u5230\u6295\u7968\u8a73\u60c5\u9801\u3002<\/p>\n<p>\u904e\u53bb\u5f88\u591a\u4eba\u7684\u5077\u5403\u6b65\u5beb\u6cd5\uff0c\u662f\u76f4\u63a5\u628a\u9019\u4e9b\u6771\u897f\u585e\u9032 <code>UiState<\/code> \u88e1\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ \u5077\u5403\u6b65\u7684\u81ea\u6bba\u5beb\u6cd5\uff1a\u628a\u4e8b\u4ef6\u7576\u72c0\u614b\ndata class BadUiState(val toastMessage: String? = null)\n<\/code><\/pre>\n<p>\u9019\u7a2e\u5beb\u6cd5\u7684\u4e0b\u5834\u901a\u5e38\u975e\u5e38\u7cbe\u5f69\uff1a<br \/>\n\u7576 ViewModel \u628a <code>toastMessage<\/code> \u8a2d\u70ba <code>&quot;\u6295\u7968\u6210\u529f&quot;<\/code>\uff0cUI \u5f48\u51fa Toast\u3002\u63a5\u8457\u4f7f\u7528\u8005\u65cb\u8f49\u4e86\u4e00\u4e0b\u624b\u6a5f\u87a2\u5e55\uff0cActivity \u91cd\u5efa\uff0cCompose \u91cd\u65b0\u8a02\u95b1 <code>UiState<\/code>\u2014\u2014\u606d\u559c\u4f60\uff0c\u90a3\u500b <code>&quot;\u6295\u7968\u6210\u529f&quot;<\/code> \u7684 Toast \u6703\u4e0d\u4fe1\u90aa\u5730\u518d\u5f48\u51fa\u4f86\u5632\u8af7\u4f60\u4e00\u6b21\uff01<\/p>\n<p>\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u6b77\u53f2\u6c89\u75fe\uff0c\u5728 MVI \u7ba1\u7dda\u4e2d\uff0c\u6211\u5011\u5c07\u72c0\u614b\u8207\u526f\u4f5c\u7528\u5fb9\u5e95\u5206\u6d41\uff1a<\/p>\n<ul>\n<li><strong>UiState<\/strong>\uff1a\u4ee3\u8868\u756b\u9762\u7684\u6301\u4e45\u5916\u89c0\uff0c\u8d70 <code>StateFlow<\/code>\uff0c\u5929\u7136\u5177\u5099\u9ecf\u6027\uff08Sticky\uff09\uff0c\u9069\u5408\u91cd\u7d44\u3002<\/li>\n<li><strong>UiEffect<\/strong>\uff1a\u4ee3\u8868\u77ac\u6642\u52d5\u4f5c\uff0c\u8d70 <code>Channel&lt;UiEffect&gt;(Channel.BUFFERED)<\/code>\uff0c\u900f\u904e <code>receiveAsFlow()<\/code> \u66b4\u9732\u7d66 UI\uff0c\u4fdd\u8b49<strong>\u55ae\u6b21\u6d88\u8cbb\u3001\u904e\u671f\u4e0d\u5019<\/strong>\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-kotlin\">\/\/ \u7368\u7acb\u7684\u4e00\u6b21\u6027\u526f\u4f5c\u7528\u5b9a\u7fa9\u8207\u5b89\u5168\u66b4\u9732\nsealed interface HomeUiEffect : UiEffect {\n    data class ShowToast(val message: String) : HomeUiEffect\n    data class NavigateToDetail(val voteId: String) : HomeUiEffect\n}\n\n\/\/ ViewModel \u5167\u90e8\u4f7f\u7528\u7de9\u885d Channel \u8f49 Flow\uff0c\u65cb\u8f49\u87a2\u5e55\u4e0d\u6f0f\u4e8b\u4ef6\u4e5f\u4e0d\u91cd\u653e\nprivate val _effect = Channel&lt;HomeUiEffect&gt;(Channel.BUFFERED)\nval effect = _effect.receiveAsFlow()\n<\/code><\/pre>\n<p>\u5728 Composable \u88e1\uff0c\u900f\u904e <code>LaunchedEffect<\/code> \u5b89\u5168\u6536\u96c6\u9019\u500b\u4e32\u6d41\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ \u900f\u904e LaunchedEffect \u5b89\u5168\u6d88\u8cbb\u526f\u4f5c\u7528\uff0c\u65cb\u8f49\u87a2\u5e55\u7d55\u4e0d\u91cd\u8907\u5f48\u51fa\nLaunchedEffect(Unit) {\n    viewModel.effect.collect { effect -&gt;\n        when (effect) {\n            is HomeUiEffect.ShowToast -&gt; snackbarHostState.showSnackbar(effect.message)\n            is HomeUiEffect.NavigateToDetail -&gt; onNavigateToDetail(effect.voteId)\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u4e7e\u6de8\u4fd0\u843d\u3002\u5c31\u7b97\u4f7f\u7528\u8005\u628a\u624b\u6a5f\u5728\u684c\u4e0a\u8f49\u5f97\u50cf\u6307\u5c16\u9640\u87ba\uff0cToast \u4e5f\u7d55\u5c0d\u53ea\u6703\u5f48\u51fa\u8a72\u5f48\u7684\u90a3\u4e00\u6b21\u3002<\/p>\n<hr>\n<h2>4. \u610f\u5716\u986f\u5f0f\u5316\uff08Explicit Intent\uff09\uff1a\u9023\u9664\u932f\u90fd\u7701\u529b\u5341\u500d<\/h2>\n<p>\u5728\u50b3\u7d71\u67b6\u69cb\u88e1\uff0cViewModel \u5f80\u5f80\u5145\u6eff\u4e86\u4e00\u5806\u96a8\u610f\u66b4\u9732\u7684 public \u65b9\u6cd5\uff1a<code>loadData()<\/code>\u3001<code>refresh()<\/code>\u3001<code>onClickItem(id)<\/code>\u3001<code>filterCategory(cat)<\/code>&#8230; \u96a8\u8457\u696d\u52d9\u589e\u9577\uff0cViewModel \u88e1\u7684\u516c\u958b\u65b9\u6cd5\u50cf\u96dc\u8349\u4e00\u6a23\u760b\u9577\uff0c\u6700\u5f8c\u8ab0\u4e5f\u4e0d\u77e5\u9053\u9019\u500b\u65b9\u6cd5\u5230\u5e95\u662f\u88ab\u54ea\u500b View\u3001\u5728\u54ea\u500b\u751f\u547d\u9031\u671f\u88e1\u5077\u5077\u8abf\u7528\u7684\u3002<\/p>\n<p>\u5728 MVI \u4e2d\uff0c\u6211\u5011\u95dc\u9589\u4e86\u6240\u6709\u516c\u958b\u65b9\u6cd5\u7684\u5f8c\u9580\uff0c\u53ea\u7559\u4e0b\u4e00\u6247\u552f\u4e00\u7684\u5927\u9580\uff1a<code>sendIntent(intent)<\/code>\u3002<\/p>\n<p>\u6240\u6709\u7684\u64cd\u4f5c\u610f\u5716\uff0c\u90fd\u88ab\u898f\u7bc4\u6210\u5f37\u578b\u5225\u7684 Sealed Interface\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ \u986f\u5f0f\u64cd\u4f5c\u610f\u5716\uff1a\u6240\u6709\u7684 UI \u884c\u70ba\u5168\u90e8\u767d\u7d19\u9ed1\u5b57\u5beb\u6e05\u695a\nsealed interface HomeUiIntent : UiIntent {\n    object Refresh : HomeUiIntent\n    data class VoteOption(val voteId: String, val optionId: String) : HomeUiIntent\n    data class FilterCategory(val category: String) : HomeUiIntent\n}\n<\/code><\/pre>\n<p>\u5728 ViewModel \u5167\u90e8\uff0c\u610f\u5716\u8655\u7406\u8b8a\u6210\u4e86\u4e00\u500b\u55ae\u7d14\u7684 Reducer \u7ba1\u9053\uff1a<\/p>\n<pre><code class=\"language-kotlin\">\/\/ \u6838\u5fc3\u7ba1\u7dda\uff1a\u610f\u5716\u5206\u767c\u8207\u72c0\u614b\u6d41\u8f49\nfun processIntent(intent: HomeUiIntent) {\n    when (intent) {\n        is HomeUiIntent.Refresh -&gt; handleRefresh()\n        is HomeUiIntent.VoteOption -&gt; handleVote(intent.voteId, intent.optionId)\n        is HomeUiIntent.FilterCategory -&gt; handleFilter(intent.category)\n    }\n}\n<\/code><\/pre>\n<p>\u9019\u5957\u8a2d\u8a08\u5e36\u4f86\u7684\u723d\u5ea6\uff0c\u53ea\u6709\u5728\u6df1\u591c\u9664\u932f\u6642\u624d\u80fd\u6df1\u523b\u9ad4\u6703\uff1a<br \/>\n\u7576\u7dda\u4e0a\u56de\u5831\u4e86\u67d0\u500b\u8a6d\u7570\u7684 Bug\uff0c\u4f60\u4e0d\u9700\u8981\u53bb\u731c\u6e2c\u4f7f\u7528\u8005\u5230\u5e95\u6309\u4e86\u4ec0\u9ebc\u3001\u8df3\u4e86\u54ea\u500b\u6d41\u7a0b\u3002\u4f60\u53ea\u9700\u8981\u5728 <code>processIntent<\/code> \u9580\u53e3\u639b\u4e00\u884c Log\uff0c\u4f7f\u7528\u8005\u7684\u6bcf\u4e00\u6b21\u9ede\u64ca\u3001\u6bcf\u4e00\u6b21\u6ed1\u52d5\u610f\u5716\u5c31\u50cf\u9ed1\u76d2\u5b50\u98db\u884c\u7d00\u9304\u5668\u4e00\u6a23\u6574\u6574\u9f4a\u9f4a\u6392\u51fa\u4f86\u3002<\/p>\n<p>\u751a\u81f3\u8981\u5beb\u55ae\u5143\u6e2c\u8a66\u6642\uff0c\u6e2c\u8a66\u4ee3\u78bc\u4e7e\u6de8\u5230\u50cf\u8a69\u4e00\u6a23\uff1a\u4e1f\u4e00\u500b <code>HomeUiIntent.Refresh<\/code> \u9032\u53bb\uff0c\u65b7\u8a00\u6700\u5f8c\u5410\u51fa\u4f86\u7684 <code>HomeUiState<\/code>\uff0c\u6536\u5de5\u3002<\/p>\n<hr>\n<h2>5. \u8e29\u5751\u4ee3\u50f9\u8207\u701f\u7051\u6536\u5de5<\/h2>\n<p>\u5f88\u591a\u5de5\u7a0b\u5e2b\u5728\u63a5\u89f8 MVI \u6642\uff0c\u7b2c\u4e00\u53cd\u61c9\u5f80\u5f80\u662f\uff1a\u300c\u5b9a\u7fa9\u90a3\u9ebc\u591a Intent\u3001State\u3001Effect\uff0c\u6a23\u677f\u4ee3\u78bc\u4e0d\u6703\u8b8a\u591a\u55ce\uff1f\u300d<\/p>\n<p>\u8aaa\u5be6\u8a71\uff0c\u6703\u591a\u4e00\u9ede\u9ede\u3002<\/p>\n<p>\u4f60\u554f\u591a\u5beb\u9019\u4e9b\u5bc6\u5c01\u4ecb\u9762\u7d2f\u4e0d\u7d2f\uff1f\u5ee2\u8a71\u7576\u7136\u7d2f\uff0c\u4f46\u6bd4\u8d77\u534a\u591c\u88ab\u7dda\u4e0a\u767d\u5c4f\u5ba2\u8a34\u53eb\u8d77\u4f86\u9664\u932f\uff0c\u5728\u51b7\u6c23\u623f\u88e1\u591a\u6253\u5e7e\u884c\u5bc6\u5c01\u4ecb\u9762\u7c21\u76f4\u662f\u5929\u5802\u3002<strong>\u96f6\u72c0\u614b\u6495\u88c2\u3001\u5fb9\u5e95\u675c\u7d55\u5168\u5c4f\u767d\u5c4f\u3001\u6c38\u9060\u4e0d\u91cd\u8907\u6d88\u8cbb\u7684\u526f\u4f5c\u7528\uff0c\u52a0\u4e0a\u55ae\u5143\u6e2c\u8a66\u79d2\u7d1a\u904e\u95dc<\/strong>\uff0c\u9019\u7b46\u4ea4\u6613\u5212\u7b97\u5230\u4e86\u6975\u9ede\u3002<\/p>\n<p>\u628a MVI \u7684\u5e95\u5c64\u7ba1\u7dda\u5fb9\u5e95\u592f\u5be6\u4e4b\u5f8c\uff0cFunny Vote \u7684\u9aa8\u67b6\u7e3d\u7b97\u5f9e\u300c\u6771\u62fc\u897f\u6e4a\u7684\u73a9\u5177\u300d\u9032\u5316\u6210\u4e86\u300c\u5177\u5099\u78ba\u5b9a\u6027\u7684\u73fe\u4ee3\u61c9\u7528\u300d\u3002<\/p>\n<p>\u4f46\u67b6\u69cb\u641e\u5b9a\u4e86\uff0c\u5f37\u8feb\u75c7\u5de5\u7a0b\u5e2b\u7684\u4e0b\u4e00\u500b\u81ea\u8650\u95dc\u5361\u53c8\u4f86\u4e86\uff1a<br \/>\n\u9019\u6642\u5019\u7684 App \u96d6\u7136\u67b6\u69cb\u73fe\u4ee3\uff0c\u4f46\u756b\u9762\u537b\u6b98\u7f3a\u4e0d\u5168\u2014\u2014\u5341\u5e74\u524d\u539f\u7248\u64c1\u6709\u7684 6 \u9801\u7d93\u5178\u5c0e\u89bd\u6559\u5b78\u3001\u81ea\u8a02\u793e\u7fa4\u5206\u4eab\u5f48\u7a97\u3001\u56db\u500b\u5c64\u7d1a\u7684\u95dc\u65bc\u9801\u9762\u4ee5\u53ca\u500b\u4eba\u4e2d\u5fc3\uff0c\u901a\u901a\u9084\u6c92\u88dc\u9f4a\u3002<\/p>\n<p>\u5728\u63a5\u4e0b\u4f86\u7684 <code>modern-android<\/code> \u5206\u652f\u88e1\uff0c\u6211\u5011\u5c07\u5c55\u958b\u4e00\u5834\u786c\u6838\u7684\u300c100% \u50cf\u7d20\u7d1a\u756b\u9762\u5fa9\u523b\u300d\u5927\u6230\uff0c\u770b\u6211\u5011\u600e\u9ebc\u7528\u7d14 Compose \u628a\u5341\u5e74\u524d\u7684\u9752\u6625\u7d30\u7bc0\u4e00\u500b\u4e0d\u6f0f\u642c\u9032 Material 3\u3002<\/p>\n<p>\u4ee5\u4e0a\u662f\u672c\u6b21\u5c0f\u5f1f\u7684\u611f\u60f3\uff0c\u6211\u771f\u7684\u61f6\u5f97\u8cbc\u843d\u843d\u9577\u7684\u5168\u5c08\u6848 CODE\uff0c\u5404\u4f4d\u771f\u7684\u60f3\u770b\u7576\u5e74\u5b8c\u6574\u7684\u63d0\u4ea4\u7d30\u7bc0\uff0c\u53bb GitHub \u7ffb <code>mvi-rewrite<\/code> \u5206\u652f\u5427\uff0c\u901a\u901a\u90fd\u653e\u5728\u90a3\uff0c\u4e0d\u6d6a\u8cbb\u7248\u9762\u3002<\/p>\n<p>\u611f\u8b1d\u89c0\u770b\uff0c\u6536\u5de5\u3002<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<div class=\"wp-block-group\" style=\"border:1px solid #e2e8f0;background:#ffffff;padding:18px 20px;margin-top:32px;margin-bottom:24px;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,0.05)\">\n<p style=\"margin:0 0 12px 0;font-size:0.9em;color:#888;font-weight:bold;text-transform:uppercase;letter-spacing:1px\">\u300aFunny Vote \u5341\u5e74\u6f14\u9032\u7cfb\u5217\u300b\u7ae0\u7bc0\u5c0e\u822a<\/p>\n<div style=\"display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:0.95em\">\n    <a href=\"https:\/\/boochlin.com\/?p=1288\" style=\"color:#C14420;text-decoration:none;font-weight:500\">\u2190 \u4e0a\u4e00\u7bc7\uff1a\u544a\u5225 XML \u8fce\u4f86 Compose\uff08\u56db\uff09<\/a><br \/>\n    <a href=\"https:\/\/boochlin.com\/?page_id=1319\" style=\"color:#666;text-decoration:none;font-size:0.85em;background:#edf2f7;padding:4px 10px;border-radius:4px\">\u7cfb\u5217\u76ee\u9304<\/a><br \/>\n    <a href=\"https:\/\/boochlin.com\/?p=1299\" style=\"color:#C14420;text-decoration:none;font-weight:500\">\u4e0b\u4e00\u7bc7\uff1a\u9752\u6625\u642c\u9032 Material 3\uff08\u516d\uff09 \u2192<\/a>\n  <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u70ba\u300aFunny Vote \u5341\u5e74\u6f14\u9032\u7cfb\u5217\u300b\u7b2c 5 \u7bc7\uff08\u5168\u7cfb\u5217\u5171 8 \u7bc7\uff09\uff5c\u67e5\u770b\u5168\u7cfb\u5217\u67b6\u69cb\u5c0e\u89bd \u63a5\u7e8c\u4e0a\u4e00\u7bc7\u7684\u6158 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1296,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86,169],"tags":[6,172,179,128],"_links":{"self":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1297"}],"collection":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1297"}],"version-history":[{"count":7,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1297\/revisions"}],"predecessor-version":[{"id":1492,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1297\/revisions\/1492"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/media\/1296"}],"wp:attachment":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}