{"id":1153,"date":"2023-03-16T22:13:41","date_gmt":"2023-03-16T14:13:41","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1153"},"modified":"2023-03-16T22:14:28","modified_gmt":"2023-03-16T14:14:28","slug":"flutter-widget-radio","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/16\/flutter-widget-radio\/","title":{"rendered":"Flutter Widget\u4e4bRadio"},"content":{"rendered":"<p>Widget\uff1a<a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/flutter.io\/docs\/development\/ui\/widgets\">https:\/\/flutter.io\/docs\/development\/ui\/widgets<\/a><br \/>\nRadio\uff1a<a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/docs.flutter.io\/flutter\/material\/Radio-class.html\">https:\/\/docs.flutter.io\/flutter\/material\/Radio-class.html<\/a><br \/>\n\u00a0 \u00a0 \u00a0 <\/p>\n<p><!-- more --><\/p>\n<pre><code class=\"language-dart\">import &#039;package:flutter\/material.dart&#039;;\n\nclass RadioButtonDemoPage extends StatefulWidget {\n  @override\n  State&lt;StatefulWidget&gt; createState() {\n    return new _RadioButtonDemoPageState();\n  }\n}\n\nclass _RadioButtonDemoPageState extends State&lt;RadioButtonDemoPage&gt; {\n  int groupValue = 1;\n  String sGroupValue = &#039;&#039;;\n\n  @override\n  Widget build(BuildContext context) {\n    return new Scaffold(\n      appBar: AppBar(\n        title: Text(&#039;RadioButton Demo&#039;),\n      ),\n      body: new Column(\n        \/\/mainAxisAlignment: MainAxisAlignment.center,\n        children: &lt;Widget&gt;[\n          new Radio(value: 0, groupValue: 0, onChanged: null),\n          \/\/onChanged\u4e3anull\u8868\u793a\u6309\u94ae\u4e0d\u53ef\u7528\n          new Radio(\n              value: 1,\n              groupValue: groupValue, \/\/\u5f53value\u548cgroupValue\u4e00\u81f4\u7684\u65f6\u5019\u5219\u9009\u4e2d\n              activeColor: Colors.red,\n              onChanged: (T) {\n                updateGroupValue(T);\n              }),\n          new Radio(\n              value: 2,\n              groupValue: groupValue,\n              onChanged: (T) {\n                updateGroupValue(T);\n              }),\n          new Radio(\n              value: 3,\n              groupValue: groupValue,\n              onChanged: (T) {\n                updateGroupValue(T);\n              }),\n          new RadioListTile(\n              value: &#039;Joe.Ye&#039;,\n              groupValue: sGroupValue,\n              title: new Text(&#039;Joe.Ye&#039;),\n              onChanged: (T) {\n                updateStringGroupValue(T);\n              }),\n          new RadioListTile(\n              value: &#039;Android&#039;,\n              groupValue: sGroupValue,\n              title: new Text(&#039;Android&#039;),\n              secondary: const Icon(Icons.favorite),\n              onChanged: (T) {\n                updateStringGroupValue(T);\n              }),\n          new RadioListTile(\n              value: &#039;iOS&#039;,\n              groupValue: sGroupValue,\n              title: new Text(&#039;iOS&#039;),\n              onChanged: (T) {\n                updateStringGroupValue(T);\n              }),\n        ],\n      ),\n    );\n  }\n\n  void updateGroupValue(int v) {\n    setState(() {\n      groupValue = v;\n    });\n  }\n\n  void updateStringGroupValue(String v) {\n    setState(() {\n      sGroupValue = v;\n    });\n  }\n}<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/Flutter\/Flutter_Widget_Radio.png\" alt=\"Flutter Widget Radio\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Widget\uff1ahttps:\/\/flutter.io\/docs\/development\/ui\/widgets R [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[305],"class_list":["post-1153","post","type-post","status-publish","format-standard","hentry","category-flutter","tag-flutter-widget"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1153"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1153\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}