{"id":577,"date":"2022-12-21T22:13:20","date_gmt":"2022-12-21T14:13:20","guid":{"rendered":"https:\/\/blog.osvlabs.com\/?p=577"},"modified":"2022-12-21T22:13:20","modified_gmt":"2022-12-21T14:13:20","slug":"flutter-%e6%97%a0%e9%9a%9c%e7%a2%8d%e5%bc%80%e5%8f%91","status":"publish","type":"post","link":"https:\/\/blog.osvlabs.com\/?p=577","title":{"rendered":"Flutter \u65e0\u969c\u788d\u5f00\u53d1"},"content":{"rendered":"<h2>\u4ecb\u7ecd<\/h2>\n<p>\u65e0\u969c\u788d\u670d\u52a1\u662f\u4e00\u79cd\u5e94\u7528\uff0c\u53ef\u63d0\u4f9b\u754c\u9762\u589e\u5f3a\u529f\u80fd\uff0c\u6765\u534f\u52a9\u6b8b\u969c\u7528\u6237\u6216\u53ef\u80fd\u6682\u65f6\u65e0\u6cd5\u4e0e\u8bbe\u5907\u8fdb\u884c\u5168\u9762\u4e92\u52a8\u7684\u7528\u6237\u5b8c\u6210\u64cd\u4f5c\u3002Android \u4f7f\u7528 TallBack \u6765\u8f85\u52a9\u65e0\u969c\u788d\u9605\u8bfb\uff0ciOS \u4f7f\u7528 Voice Over.<br \/>\n\u5728\u539f\u751f\u7cfb\u7edf\u91cc\u4e8c\u8005\u5bf9\u65e0\u969c\u788d\u670d\u52a1\u7684\u5f00\u53d1\u652f\u6301\u6bd4\u8f83\u5b8c\u5584\uff0c\u800c Flutter \u5bf9\u4e8e\u65e0\u969c\u788d\u5f00\u53d1\u7684\u652f\u6301\u8fd8\u53ea\u662f\u4e00\u4e9b\u57fa\u7840\u529f\u80fd(\u76ee\u524d\u5728 iOS16 \u4e0a\u6709\u5f88\u591a\u95ee\u9898), \u5bf9\u4e8e\u6717\u8bfb\u89e6\u53d1\u7126\u70b9\u7ba1\u7406\u662f\u4e0d\u652f\u6301\u7684\uff0c\u5b98\u65b9issue \u91cc\u7684\u8bf4\u6cd5\u662f\u6682\u65f6\u6ca1\u6709\u6253\u7b97\u652f\u6301\u3002<\/p>\n<p>\u4e0b\u9762\u4ecb\u7ecd\u4e0b\u5e38\u7528\u7684\u4e09\u4e2a\u7ec4\u4ef6\uff1a<br \/>\n<a href=\"https:\/\/api.flutter.dev\/flutter\/widgets\/Semantics-class.html\">Semantics<\/a> (\u4e3b\u8981\u7528\u8fd9\u4e2a)<br \/>\n<a href=\"https:\/\/api.flutter.dev\/flutter\/widgets\/MergeSemantics-class.html\">MergeSemantics<\/a> (checkbox \u8fd9\u79cd\u7ec4\u5408\u7684\u591a\u7528)<br \/>\n<a href=\"https:\/\/api.flutter.dev\/flutter\/widgets\/ExcludeSemantics-class.html\">ExcludeSemantics<\/a> (\u4e0d\u8bfb\u7684\u65f6\u5019\u7528)<\/p>\n<h2>Semantics \u5e38\u7528\u5c5e\u6027<\/h2>\n<p><code>label<\/code>: \u70b9\u51fb\u8bfb\u7684\u63d0\u793a<br \/>\n<code>image<\/code>: \u662f\u5426\u662f\u56fe\u7247\uff0c\u4ee5\u6b64\u7c7b\u63a8<br \/>\n<code>explicitChildNodes<\/code>: \u662f\u5426\u5f3a\u5236\u663e\u793a\u5b50\u7ec4\u4ef6\u7684\u8bed\u4e49 (Row, Column\u4f7f\u7528\uff0c\u4e0d\u7136\u8bfb\u4e0d\u5230\u5b50\u7ec4\u4ef6)<br \/>\n<code>excludeSemantics<\/code>: \u662f\u5426\u6392\u9664\u5b50\u7ec4\u4ef6\u7684\u8bed\u4e49, \u8bbe\u7f6e\u4e3a <code>true<\/code> \u540e\u4e0d\u518d\u8bfb\u5b50\u7ec4\u4ef6\u3002<br \/>\n<code>container<\/code>: \u662f\u5426\u518d\u5f15\u5165\u4e00\u4e2a\u65b0\u7684\u8bed\u4e49\u8282\u70b9.<br \/>\n<code>enabled<\/code>: \u662f\u5426\u53ef\u7528<br \/>\n<code>checked<\/code>: CheckBox \u662f\u5426\u88ab\u52fe\u9009<br \/>\n<code>button<\/code>: \u662f\u5426\u662f\u4e00\u4e2a\u6309\u94ae<br \/>\n<code>slider<\/code>: \u662f\u5426\u662f\u4e2a slider<br \/>\n<code>link<\/code>: \u662f\u5426\u662f\u4e2alink<br \/>\n<code>header<\/code>: \u662f\u5426\u662f\u6807\u9898<br \/>\n<code>textField<\/code>: \u662f\u5426\u662ftextField<br \/>\n<code>readOnly<\/code>: \u662f\u5426\u53ea\u8bfb<br \/>\n<code>focusable<\/code>: \u662f\u5426\u53ef\u805a\u7126<br \/>\n<code>focused<\/code>: \u662f\u5426\u805a\u7126<br \/>\n<code>scopesRoute<\/code>: \u662f\u5426\u662f\u58f0\u660e\u8def\u7531\u540d<br \/>\n<code>namesRoute<\/code>: \u662f\u5426\u5305\u542b\u8def\u7531\u7684\u8bed\u4e49\u6807\u7b7e<br \/>\n<code>sortKey<\/code>\u6392\u5e8f, <code>sortKey: OrdinalSortKey(2),<\/code> <del>\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u8ba9\u9ed8\u8ba4\u53d1\u58f0\uff0c<\/del>(\u6709\u4e9b\u60c5\u51b5\u4f1a\u751f\u6548\uff0c\u5f88\u591a\u65f6\u5019\u4e0d\u751f\u6548\uff0c\u4e0d\u786e\u5b9a\u5177\u4f53\u539f\u56e0\uff0c\u5982\u679c\u6709\u4e86\u89e3\u7684\u671b\u544a\u77e5)<br \/>\n<code>...<\/code>: \u5269\u4f59\u7684\u4e00\u4e9b\u53ef\u4ee5\u53c2\u8003\u6e90\u7801\uff0c\u4e0d\u662f\u5f88\u5e38\u7528<br \/>\n<code>child<\/code>: \u5b50\u7ec4\u4ef6<\/p>\n<blockquote>\n<p><del>\u4f7f\u7528 <code>Focus()<\/code> \u548c <code>autofucos<\/code> \u662f\u6ca1\u6709\u529e\u6cd5\u81ea\u52a8\u53d1\u58f0\u7684<\/del>\uff0c\u8f93\u5165\u6846\u53ef\u4ee5\u7528 focusNode.<\/p>\n<\/blockquote>\n<h3>\u65e0\u969c\u788d\u7126\u70b9\u7ba1\u7406\u66ff\u4ee3\u529e\u6cd5<\/h3>\n<blockquote>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u4f1a\u51fa\u73b0\u4e0d\u5de5\u4f5c\u7684\u60c5\u51b5\uff0c\u800c\u4e14\u5728Android 13\u4e0a\u662f\u4e0d\u652f\u6301\u7684(\u53ea\u5728Android 13 \u4e0a\u6d4b\u8bd5\u8fc7),\u76ee\u524d\u770b\u6765 Flutter \u5bf9\u65e0\u969c\u788d\u7684\u652f\u6301\u53ea\u662f\u57fa\u7840\u7684\u6717\u8bfb\u5185\u5bb9<\/p>\n<pre><code>import &#039;package:flutter\/scheduler.dart&#039;;\nfinal FocusNode _tempNode = FocusNode();\nFocusScopeNode _focusScopeNode;\n@override\nvoid initState() {\nsuper.initState();\nSchedulerBinding.instance.addPostFrameCallback((_) {\n_focusScopeNode = FocusScope.of(context);\n_focusScopeNode.requestFocus(_tempNode);\n});\n}\n@override\nWidget build(BuildContext context) {\nFocus(\nchild: _widget,\nfocusNode: _tempNode,\n),\n}<\/code><\/pre>\n<\/blockquote>\n<h2>\u6700\u540e<\/h2>\n<p>\u8981\u5f00\u53d1\u65e0\u969c\u788d\uff0c\u9996\u5148\u8981\u4f7f\u7528\u65e0\u969c\u788d\u3002\u5728\u4f7f\u7528\u65e0\u969c\u788d\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4f53\u9a8c\u4e86\u4e0d\u540c\u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u6253\u5f00\u4e86\u53e6\u4e00\u79cd\u601d\u8def\uff0c\u4e5f\u53d1\u73b0\u4e86\u8bbe\u8ba1\u5bf9\u4e8e\u65e0\u969c\u788d\u4e5f\u662f\u6709\u9700\u6c42\u7684\uff1a<\/p>\n<ol>\n<li>\u786e\u4fdd\u6587\u5b57\u548c\u80cc\u666f\u7684\u989c\u8272\u6709\u8db3\u591f\u9ad8\u7684\u5bf9\u6bd4\u5ea6<br \/>\n(\u6839\u636e <a href=\"https:\/\/www.w3.org\/TR\/UNDERSTANDING-WCAG20\/visual-audio-contrast-contrast.html\">WCAG<\/a> \u6807\u51c6\uff0c\u6587\u5b57\u548c\u80cc\u666f\u8272\u7684\u5bf9\u6bd4\u5ea6\u81f3\u5c11\u662f 4.5:1\uff1b\u5982\u679c\u662f\u5927\u4e8e\u7b49\u4e8e 24 px\/ 19 px bold \u7684\u6587\u5b57\uff0c\u5bf9\u6bd4\u5ea6\u81f3\u5c11\u662f 3:1 )<\/li>\n<li>\u522b\u53ea\u4f9d\u9760\u989c\u8272\u4f20\u8fbe\u4fe1\u606f<br \/>\n(\u6bd4\u5982\uff1a\u540c\u65f6\u4f7f\u7528\u300c\u989c\u8272\u533a\u5206 + \u6807\u7b7e + \u8bf4\u660e\u300d\uff0c\u6765\u8868\u660e\u54ea\u4e2a\u662f\u9519\u8bef\u72b6\u6001\u3002)<\/li>\n<li>\u7b49\u7b49<\/li>\n<\/ol>\n<p>\u65e0\u8bba\u662f App \u5f00\u53d1\u8fd8\u662f Web \u5f00\u53d1\uff0c\u8fd8\u662f\u5e0c\u671b\u5927\u5bb6\u591a\u591a\u8003\u8651\u89c6\u89c9\u969c\u788d\u7528\u6237\uff0c\u591a\u591a\u652f\u6301\u65e0\u969c\u788d\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ecb\u7ecd \u65e0\u969c\u788d\u670d\u52a1\u662f\u4e00\u79cd\u5e94\u7528\uff0c\u53ef\u63d0\u4f9b\u754c\u9762\u589e\u5f3a\u529f\u80fd\uff0c\u6765\u534f\u52a9\u6b8b\u969c\u7528\u6237\u6216\u53ef\u80fd\u6682\u65f6\u65e0\u6cd5\u4e0e\u8bbe\u5907\u8fdb\u884c\u5168\u9762\u4e92\u52a8\u7684\u7528\u6237\u5b8c\u6210\u64cd\u4f5c\u3002Android \u4f7f\u7528 TallBack \u6765\u8f85\u52a9\u65e0\u969c\u788d\u9605\u8bfb\uff0ciOS \u4f7f\u7528 Voice Ove\u2026<\/p>\n","protected":false},"author":4,"featured_media":250,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":5}},"_links":{"self":[{"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/posts\/577"}],"collection":[{"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=577"}],"version-history":[{"count":2,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/posts\/577\/revisions"}],"predecessor-version":[{"id":579,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/posts\/577\/revisions\/579"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=\/wp\/v2\/media\/250"}],"wp:attachment":[{"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.osvlabs.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}