{"id":282,"date":"2024-05-08T19:42:50","date_gmt":"2024-05-08T11:42:50","guid":{"rendered":"https:\/\/www.ixriver.com\/?p=282"},"modified":"2024-05-08T20:06:41","modified_gmt":"2024-05-08T12:06:41","slug":"flutter-%e7%bb%a7%e6%89%bf%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.ai.ixriver.com\/?p=282","title":{"rendered":"Dart\u7c7b\u7ee7\u627f\u7528\u6cd5"},"content":{"rendered":"\n<p>\u4f7f\u7528extends \u6307\u5b9a\u8981\u7ee7\u627f\u7236\u7c7b\uff0c\u4f7f\u7528super\u5f15\u7528\u7236\u7c7b\u5bf9\u8c61<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Parent {\n  void show() {\n    print('Parent show');\n  }\n}\n\nclass Children extends Parent {\n  @override\n  void show() {\n    super.show();\n    print('Children show');\n  }\n\n  @override\n  void noSuchMethod(Invocation invocation) {\n    print('Children nosuchmethod ${invocation.memberName}');\n  }\n}\n\nfinal obj = Children();\nobj.show(); \n\/\/ \u8f93\u51fa\n\/\/ Parent Show\n\/\/ Children show<\/code><\/pre>\n\n\n\n<p>\u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199\u7236\u7c7b\u7684\u5b9e\u4f8b\u65b9\u6cd5\uff0cgetter\uff0csetter\u65b9\u6cd5\uff0c\u4f7f\u7528@override \u6ce8\u91ca\u8868\u660e\u8981\u91cd\u5199\u51fd\u6570\uff0c\u91cd\u5199\u51fd\u6570\u5fc5\u987b\u5b8c\u5168\u5339\u914d\u7236\u7c7b\u7684\u65b9\u6cd5\u5b9a\u4e49\uff0c\u5305\u62ec\u8fd4\u56de\u7c7b\u578b\uff0c\u53c2\u6570\u7c7b\u578b\uff0c\u53c2\u6570\u4e2a\u6570\u7b49<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">noSuchMethod<\/h2>\n\n\n\n<p>\u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199noSuchMethod\u6765\u68c0\u6d4b\u5bf9\u4e0d\u5b58\u5728\u65b9\u6cd5\u6216\u8005\u53d8\u91cf\u7684\u8bbf\u95ee\uff0c\u7528\u6cd5\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Children extends Parent {\n  @override\n  void noSuchMethod(Invocation invocation) {\n    print('Children nosuchmethod ${invocation.memberName}');\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u662f\u65e0\u6cd5\u76f4\u63a5\u8c03\u7528\u7c7b\u4e0d\u5b58\u5728\u7684\u65b9\u6cd5\u6216\u8005\u53d8\u91cf\u7684\uff0c\u9664\u975e\uff1a<\/p>\n\n\n\n<p>\u8c03\u7528\u5bf9\u8c61\u7684\u7c7b\u578b\u4e3adyanmic\uff0c\u7c7b\u4f3c\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dynamic obj = Children();\nobj.showName();\n\n\/\/ \u7531\u4e8echildren\u6ca1\u6709showName\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u6240\u4ee5\u4f1a\u89e6\u53d1noSuchMethod\u7684\u8c03\u7528<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528extends \u6307\u5b9a\u8981\u7ee7\u627f\u7236\u7c7b\uff0c\u4f7f\u7528super\u5f15\u7528\u7236\u7c7b\u5bf9\u8c61 \u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199\u7236\u7c7b\u7684\u5b9e\u4f8b\u65b9\u6cd5\uff0cgetter\uff0cse [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"blocksy_meta":[],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"post_excerpt_stackable":"<p>\u4f7f\u7528extends \u6307\u5b9a\u8981\u7ee7\u627f\u7236\u7c7b\uff0c\u4f7f\u7528super\u5f15\u7528\u7236\u7c7b\u5bf9\u8c61 class Parent { void show() { print(&#8216;Parent show&#8217;); } } class Childre&hellip;<\/p>\n","category_list":"<a href=\"https:\/\/www.ai.ixriver.com\/?cat=20\" rel=\"category\">Flutter<\/a>","author_info":{"name":"admin","url":"https:\/\/www.ai.ixriver.com\/?author=1"},"comments_num":"0 comments","_links":{"self":[{"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=\/wp\/v2\/posts\/282"}],"collection":[{"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=282"}],"version-history":[{"count":10,"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=\/wp\/v2\/posts\/282\/revisions"}],"predecessor-version":[{"id":298,"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=\/wp\/v2\/posts\/282\/revisions\/298"}],"wp:attachment":[{"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ai.ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}