{"id":2147,"date":"2021-07-16T07:38:13","date_gmt":"2021-07-16T07:38:13","guid":{"rendered":"https:\/\/www.bearloga.space\/?page_id=2147"},"modified":"2021-07-16T07:38:14","modified_gmt":"2021-07-16T07:38:14","slug":"urok-2-statelesswidget-i-statefulwidget","status":"publish","type":"page","link":"https:\/\/www.bearloga.space\/en\/urok-2-statelesswidget-i-statefulwidget\/","title":{"rendered":"\u0423\u0440\u043e\u043a 2. StatelessWidget \u0438 StatefulWidget"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-rich is-provider-\u0432\u0441\u0442\u0430\u0432\u0438\u0442\u044c-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a wp-block-embed-\u0432\u0441\u0442\u0430\u0432\u0438\u0442\u044c-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"jetpack-video-wrapper\"><iframe loading=\"lazy\" title=\"Flutter \u0423\u0440\u043e\u043a 2. StatelessWidget \u0438 StatefulWidget\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/econq3I_H9Y?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u043c \u0443\u0440\u043e\u043a\u0435 \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043b\u0438 \u043f\u0440\u0438\u043c\u0435\u0440 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432, \u0441\u043e\u0437\u0434\u0430\u043b\u0438 \u0441\u0432\u043e\u0439 \u0432\u0438\u0434\u0436\u0435\u0442 MyBody \u043d\u0430\u0441\u043b\u0435\u0434\u0443\u0435\u043c\u044b\u0439 \u043e\u0442 \u043a\u043b\u0430\u0441\u0441\u0430 StatelessWidget.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u0441\u0435 \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u043a\u043b\u0430\u0441\u0441\u044b-\u0432\u0438\u0434\u0436\u0435\u0442\u044b \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u043e\u0442 \u0434\u0432\u0443\u0445 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0445:&nbsp;<strong>StatelessWidget<\/strong>&nbsp;\u0438&nbsp;<strong>StatefulWidget<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u0447\u0430\u0441\u0442\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u0443\u0434\u043e\u0431\u043d\u043e \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u044f\u0442\u044c \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u0432\u0438\u0434\u0436\u0435\u0442\u044b, \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u044b\u0435 \u043e\u0442 \u044d\u0442\u0438\u0445 \u0434\u0432\u0443\u0445 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u043e\u0432, \u043d\u043e \u043a\u0430\u043a\u043e\u0439 \u0438\u0437 \u043d\u0438\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u2013 \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0432 \u044d\u0442\u043e\u043c \u0443\u0440\u043e\u043a\u0435.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"part1\">1. StatelessWidget<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>StatelessWidget<\/strong>&nbsp;\u2013 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432. \u042d\u0442\u043e \u0442\u0430\u043a\u0438\u0435 \u0432\u0438\u0434\u0436\u0435\u0442\u044b \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0435 \u0438\u043c\u0435\u044e\u0442 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0433\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f, \u0437\u0430\u0432\u0438\u0441\u044f\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0442 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 \u0438 \u043e\u0442 \u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u0438\u0434\u0436\u0435\u0442\u044b \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0430\u0441\u043b\u0435\u0434\u0443\u044e\u0442\u0441\u044f \u043e\u0442 StatelessWidget:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>class Text()<\/li><li>class FlatButton()<\/li><li>class Container()<\/li><li>\u0438 \u0434\u0440.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0430\u043c\u0430\u044f \u043f\u0440\u043e\u0441\u0442\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0436\u0435\u0442\u0430 \u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430 StatelessWidget:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class MyWidget extends StatelessWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Widget build(BuildContext context) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">return new Text(<em>&#8216;my text&#8217;<\/em>);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043e\u043f\u0443\u0441\u0442\u0438\u043c, \u0447\u0442\u043e \u043c\u044b \u0445\u043e\u0442\u0438\u043c \u0432\u044b\u0432\u043e\u0434\u0438\u0442\u044c \u0441\u043f\u0438\u0441\u043e\u043a \u0430\u043d\u043e\u043d\u0441\u043e\u0432 \u043d\u043e\u0432\u043e\u0441\u0442\u0435\u0439, \u043a\u0430\u0436\u0434\u0430\u044f \u043d\u043e\u0432\u043e\u0441\u0442\u044c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0438\u0437 \u0441\u0435\u0431\u044f \u0431\u043b\u043e\u043a \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0435\u0441\u0442\u044c: \u043a\u0430\u0440\u0442\u0438\u043d\u043a\u0430, \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a \u0438 \u0442\u0435\u043a\u0441\u0442.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0441\u043f\u0438\u0441\u043a\u0430 \u043d\u043e\u0432\u043e\u0441\u0442\u0435\u0439 \u0441 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u043f\u043e\u0437\u0436\u0435, \u0441\u0435\u0439\u0447\u0430\u0441 \u043d\u0430\u0441 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u0443\u0435\u0442 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u0430\u044f \u043d\u043e\u0432\u043e\u0441\u0442\u044c \u0438 \u0431\u043b\u043e\u043a \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0435\u0435 \u0431\u0443\u0434\u0435\u0442 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0442\u044c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432\u0441\u0435 \u0434\u0430\u043d\u043d\u044b\u0435 \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u0431\u043b\u043e\u043a\u0430 \u043d\u0430\u043c \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b \u0437\u0430\u0440\u0430\u043d\u0435\u0435 \u0438 \u043d\u0435 \u0431\u0443\u0434\u0443\u0442 \u0438\u0437\u043c\u0435\u043d\u044f\u0442\u0441\u044f, \u0442\u043e \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441 StatelessWidget \u043d\u0430\u043c \u043e\u0442\u043b\u0438\u0447\u043d\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u0437\u0434\u0430\u0434\u0438\u043c \u043a\u043b\u0430\u0441\u0441&nbsp;<strong>NewsBox<\/strong>&nbsp;\u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430&nbsp;<strong>StatelessWidget<\/strong>&nbsp;\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u043c \u0432 \u043d\u0435\u043c \u043f\u043e\u043b\u044f:<br><strong>_title<\/strong>&nbsp;\u2013 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a \u0430\u043d\u043e\u043d\u0441\u0430 \u043d\u043e\u0432\u043e\u0441\u0442\u0438,<br><strong>_text<\/strong>&nbsp;\u2013 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u043d\u043e\u0432\u043e\u0441\u0442\u043d\u043e\u0433\u043e \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f,<br><strong>_imageurl<\/strong>&nbsp;\u2013 \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBox extends StatelessWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final String _title;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final String _text;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">String _imageurl;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0430\u0437\u0431\u0435\u0440\u0435\u043c \u0441\u0442\u0440\u043e\u043a\u0443&nbsp;<strong>final String _title;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>title<\/strong>&nbsp;\u2013 \u043f\u043e\u043b\u0435 \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430, \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u0445\u0440\u0430\u043d\u0438\u0442\u044c \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a \u043d\u043e\u0432\u043e\u0441\u0442\u043d\u043e\u0433\u043e \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>_<\/strong>&nbsp;(\u043f\u043e\u0434\u0447\u0435\u0440\u043a\u0438\u0432\u0430\u043d\u0438\u0435 \u043f\u0435\u0440\u0435\u0434 \u0438\u043c\u0435\u043d\u0435\u043c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439) \u2013 \u0432 \u044f\u0437\u044b\u043a\u0435 Dart \u0433\u043e\u0432\u043e\u0440\u0438\u0442 \u043e \u0442\u043e\u043c \u0447\u0442\u043e \u0434\u0430\u043d\u043d\u0430\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0441\u043a\u0440\u044b\u0442\u0430 \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u043d\u0443\u0442\u0440\u0438 \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430 (\u0430\u043d\u0430\u043b\u043e\u0433 private \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>String<\/strong>&nbsp;\u2013 \u043d\u0430\u0448\u0430 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u043e\u0433\u043e \u0442\u0438\u043f\u0430<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>final<\/strong>&nbsp;\u2013 \u0434\u0430\u043d\u043d\u0430\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0434\u043e\u043b\u0436\u043d\u0430 \u0431\u044b\u0442\u044c \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u0430 \u043f\u0440\u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430 \u0438 \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0430<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041c\u043e\u0436\u043d\u043e \u0431\u044b\u043b\u043e \u0431\u044b \u043f\u0440\u043e\u0441\u0442\u043e \u043e\u0431\u044a\u044f\u0432\u0438\u0442\u044c \u043f\u043e\u043b\u0435 \u0432 \u043a\u043b\u0430\u0441\u0441\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e&nbsp;<strong>var title;<\/strong>&nbsp;\u0432 \u043f\u0435\u0440\u0441\u043f\u0435\u043a\u0442\u0438\u0432\u0435 \u044d\u0442\u043e \u043f\u043b\u043e\u0445\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u0432 \u043d\u0435\u043c \u043d\u0435\u0442 \u0442\u0438\u043f\u0438\u0437\u0430\u0446\u0438\u0438, \u0430 \u0437\u043d\u0430\u0447\u0438\u0442 \u043c\u043e\u0436\u043d\u043e \u043f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u0442\u0443\u0434\u0430 \u0447\u0438\u0441\u043b\u043e \u0438\u043b\u0438 \u043b\u044e\u0431\u043e\u0439 \u0434\u0440\u0443\u0433\u043e\u0439 \u043e\u0431\u044a\u0435\u043a\u0442 \u2013 \u0432 \u0431\u0443\u0434\u0443\u0449\u0435\u043c \u0442\u0430\u043a\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043c\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c;<\/li><li>\u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043f\u043e\u043b\u044e \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0432 \u0431\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u043e\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u043c\u043e\u0436\u0435\u0442 \u043d\u0435\u043e\u0436\u0438\u0434\u0430\u043d\u043d\u043e \u00ab\u0441\u043b\u043e\u043c\u0430\u0442\u044c\u00bb \u0440\u0430\u0431\u043e\u0442\u0443 \u0432\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430, \u0435\u0441\u043b\u0438 \u0412\u044b \u0431\u0443\u0434\u0435\u0442\u0435 \u043c\u0435\u043d\u044f\u0442\u044c \u0435\u0433\u043e \u0438\u0437 \u0432\u043d\u0435 \u0438 \u043e\u043d \u0431\u0443\u0434\u0435\u0442 \u043d\u0435 final, \u0438\u043b\u0438 \u0436\u0435 \u0435\u0441\u043b\u0438 \u043d\u0443\u0436\u043d\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u0432\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f;<\/li><li>\u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435 final \u0442\u0430\u043c \u0433\u0434\u0435 \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u043e\u0431\u044a\u0435\u043a\u0442\u0435 \u043d\u0435 \u043c\u0435\u043d\u044f\u044e\u0442\u0441\u044f \u2013 \u043c\u043e\u0436\u0435\u0442 \u0441\u043c\u0443\u0442\u0438\u0442\u044c \u0434\u0440\u0443\u0433\u043e\u0433\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430, \u0438\u043b\u0438 \u0434\u0430\u0436\u0435 \u0412\u0430\u0441 \u0441\u0430\u043c\u0438\u0445 \u043a\u043e\u0433\u0434\u0430 \u043d\u0430\u0447\u043d\u0435\u0442\u0435 \u0437\u0430\u0431\u044b\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434, \u0442\u0430\u043a \u0436\u0435 \u0440\u0435\u0434\u0430\u043a\u0442\u043e\u0440 Android \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442 \u0447\u0442\u043e\u0431\u044b \u0432\u0441\u0435 \u043f\u043e\u043b\u044f \u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430 StatelessWidget \u0431\u044b\u043b\u0438 final.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043e\u0431\u0430\u0432\u0438\u043c \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440 \u0432 \u043d\u0430\u0448 \u043a\u043b\u0430\u0441\u0441:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBox(this._title, this._text, {String imageurl}) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">_imageurl = imageurl;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>NewsBox<\/strong>&nbsp;\u2013 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440\u0430 \u0434\u043e\u043b\u0436\u043d\u043e \u0441\u043e\u0432\u043f\u0430\u0434\u0430\u0442\u044c \u0441 \u0438\u043c\u0435\u043d\u0435\u043c \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043a\u0440\u0443\u0433\u043b\u044b\u0445 \u0441\u043a\u043e\u0431\u043a\u0430\u0445&nbsp;<strong>()<\/strong>&nbsp;\u043c\u044b \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f \u0434\u0432\u0430 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u043e \u0441\u043a\u0440\u044b\u0442\u044b\u043c \u043f\u043e\u043b\u044f\u043c&nbsp;<strong>_title<\/strong>&nbsp;\u0438&nbsp;<strong>_text<\/strong>&nbsp;\u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u0444\u0438\u0433\u0443\u0440\u043d\u044b\u0445 \u0441\u043a\u043e\u0431\u043a\u0430\u0445&nbsp;<strong>{}<\/strong>&nbsp;\u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0432 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440\u0435 \u043c\u043e\u0436\u043d\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440&nbsp;<strong>imageurl<\/strong>&nbsp;\u0441\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u043c \u0442\u0438\u043f\u0430&nbsp;<strong>String<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0422.\u0435. \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440 \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430 \u0434\u0432\u0443\u043c\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u0430\u043c\u0438:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>new NewsBox(&#8216;\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a&#8217;, &#8216;\u0441\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u043d\u043e\u0432\u043e\u0441\u0442\u0438&#8217;, imageurl: &#8216;http:\/\/url\/image.jpg&#8217;)<\/strong>&nbsp;\/\/ \u0441 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c imageurl<\/li><li><strong>new NewsBox(&#8216;\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a&#8217;, &#8216;\u0441\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u043d\u043e\u0432\u043e\u0441\u0442\u0438&#8217;)<\/strong>&nbsp;\/\/ \u0431\u0435\u0437 imageurl<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u0410 \u0432\u043e\u0442 \u0442\u0430\u043a \u0432\u044b\u0437\u044b\u0432\u0430\u0442\u044c \u043d\u0430\u0448 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440 \u043d\u0435\u043b\u044c\u0437\u044f:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><em>new NewsBox()<\/em>&nbsp;\/\/ \u0431\u0435\u0437 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432<\/li><li><em>new NewsBox(&#8216;\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a&#8217;)<\/em>&nbsp;\/\/ \u0442\u043e\u043b\u044c\u043a\u043e \u0441 \u043e\u0434\u043d\u0438\u043c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c<\/li><li><em>new NewsBox(&#8216;\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a&#8217;, imageurl: &#8216;http:\/\/url\/image.jpg&#8217;, &#8216;\u0441\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u043d\u043e\u0432\u043e\u0441\u0442\u0438&#8217;)<\/em>&nbsp;\/\/ \u043c\u0435\u043d\u044f\u0442\u044c \u043c\u0435\u0441\u0442\u0430\u043c\u0438 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438 \u043d\u0435 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u043f\u043e \u043a\u043b\u044e\u0447\u0443<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438\u0432\u0435\u0434\u0435\u043c \u043a\u0440\u0430\u0442\u043a\u0443\u044e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443, \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043c\u044b \u0445\u043e\u0442\u0438\u043c \u0432\u044b\u0432\u0435\u0441\u0442\u0438:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u0415\u0441\u043b\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u0437\u0430\u0434\u0430\u043d\u043e \u0447\u0435\u0440\u0435\u0437 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440&nbsp;<strong>imageurl<\/strong>&nbsp;\u0442\u043e \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0438&nbsp;<strong>build<\/strong>&nbsp;\u043c\u044b \u0432\u044b\u0432\u0435\u0434\u0438\u043c \u0442\u0430\u043a\u0443\u044e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443:if (_imageurl != null) return new Container(<br>child: new Row(<br>children: [<br>new Image.network(_imageurl),<br>new Column(children: [new Text(_title),new Text(_text)])<br>])<br>)<\/li><li>\u0415\u0441\u043b\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043d\u0435\u0442, \u0442\u043e \u0432\u044b\u0432\u0435\u0434\u0435\u043c \u0431\u0435\u0437 \u043d\u0435\u0433\u043e:return new Container(<br>child: new Row(<br>children: [<br>new Column(children: [new Text(_title),new Text(_text)])<br>])<br>)<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"part1_1\">\u041b\u0438\u0441\u0442\u0438\u043d\u0433 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">import <em>&#8216;package:flutter\/material.dart&#8217;<\/em>;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBox extends StatelessWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final String _title;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final String _text;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">String _imageurl;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBox(this._title, this._text, {String imageurl}) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">_imageurl = imageurl;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Widget build(BuildContext context) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">if (_imageurl != null &amp;&amp; _imageurl != <em>&#8221;<\/em>) return new Container(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">color: Colors.black12,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">height: 100.0,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">child: new Row(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Image.network(_imageurl, width: 100.0, height: 100.0, fit: BoxFit.cover,),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child: new Container(padding: new EdgeInsets.all(5.0), child: new Column(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Text(_title, style: new TextStyle(fontSize: 20.0), overflow: TextOverflow.ellipsis),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child:new Text(_text, softWrap: true, textAlign: TextAlign.justify,))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">])<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">return new Container(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">color: Colors.black12,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">height: 100.0,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">child: new Row(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child: new Container(padding: new EdgeInsets.all(5.0), child: new Column(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Text(_title, style: new TextStyle(fontSize: 20.0), overflow: TextOverflow.ellipsis),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child:new Text(_text, softWrap: true, textAlign: TextAlign.justify,))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">])<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void main() =&gt; runApp(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new MaterialApp(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">debugShowCheckedModeBanner: false,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">home: new Scaffold(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">appBar: new AppBar(),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">body: new NewsBox(<em>&#8216;\u041d\u043e\u0432\u044b\u0439 \u0443\u0440\u043e\u043a \u043f\u043e Flutter&#8217;<\/em>, <em>&#8221;<\/em><em>&#8216;\u0412 \u043d\u043e\u0432\u043e\u043c \u0443\u0440\u043e\u043a\u0435 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0432 \u043a\u0430\u043a\u0438\u0445 \u0441\u043b\u0443\u0447\u0430\u044f\u0445 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c \u043a\u043b\u0430\u0441\u0441 StatelessWidget \u0438 StatefulWidget. \u041f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u044b \u043f\u0440\u0438\u043c\u0435\u0440\u044b \u0438\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f.&#8217;<\/em><em>&#8221;<\/em>,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">imageurl: <em>&#8216;https:\/\/flutter.su\/favicon.png&#8217;<\/em>)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043f\u043e\u043b\u043d\u043e\u043c \u043b\u0438\u0441\u0442\u0438\u043d\u0433\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u043c\u044b \u0443\u0441\u043b\u043e\u0436\u043d\u0438\u043b\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u044e build \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043e\u0436\u0438\u0434\u0430\u0435\u043c\u044b\u0439 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>if (_imageurl != null &amp;&amp; _imageurl != &#8221;)<\/strong>&nbsp;\u2013 \u0432 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u043c\u044b \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430 \u0442\u043e \u0447\u0442\u043e \u0430\u0434\u0440\u0435\u0441 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d, \u043d\u043e \u0438 \u0447\u0442\u043e \u043e\u043d \u043d\u0435 \u043f\u0443\u0441\u0442\u043e\u0439<\/li><li><strong>new Container(color: Colors.black12, height: 100.0,<\/strong>&nbsp;\u2013 \u0432 \u0432\u0438\u0434\u0436\u0435\u0442\u0435 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430 \u043c\u044b \u0443\u043a\u0430\u0437\u0430\u043b\u0438 \u0446\u0432\u0435\u0442 \u0444\u043e\u043d\u0430 \u0431\u043b\u043e\u043a\u0430 \u0438 \u0435\u0433\u043e \u0432\u044b\u0441\u043e\u0442\u0443. \u0412\u041d\u0418\u041c\u0410\u041d\u0418\u0415: \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440&nbsp;<strong>height<\/strong>&nbsp;\u043e\u0436\u0438\u0434\u0430\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0442\u0438\u043f\u0430&nbsp;<strong>double<\/strong>&nbsp;\u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0441\u0442\u043e\u0438\u0442 100.0 \u0430 \u043d\u0435 100<\/li><li><strong>new Image.network(_imageurl, width: 100.0, height: 100.0, fit: BoxFit.cover,)<\/strong>&nbsp;\u2013 \u0434\u043b\u044f \u0432\u0438\u0434\u0436\u0435\u0442\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043c\u044b \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0432\u044b\u0441\u043e\u0442\u044b \u0438 \u0448\u0438\u0440\u0438\u043d\u044b, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0443\u043a\u0430\u0437\u0430\u043b\u0438 \u0441\u043f\u043e\u0441\u043e\u0431 \u043a\u0430\u0434\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u0437\u0430\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f<\/li><li><strong>new Expanded(child: new Container(padding: new EdgeInsets.all(5.0), child: new Column(children:<\/strong>&nbsp;\u2013 \u0432\u0438\u0434\u0436\u0435\u0442 Column, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u0434\u0432\u0430 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u0430, \u043c\u044b \u043e\u0431\u0435\u0440\u043d\u0443\u043b\u0438 \u0434\u0432\u0443\u043c\u044f \u0432\u0438\u0434\u0436\u0435\u0442\u0430\u043c\u0438:<ol><li><strong>new Expanded<\/strong>&nbsp;\u2013 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u0432 \u0434\u043e\u0447\u0435\u0440\u043d\u0438\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432, \u0431\u0435\u0437 \u043d\u0435\u0433\u043e \u0432\u0438\u0434\u0436\u0435\u0442 Column \u043c\u043e\u0436\u0435\u0442 \u0438\u043c\u0435\u0442\u044c \u0431\u0435\u0437\u0433\u0440\u0430\u043d\u0438\u0447\u043d\u044b\u0435 \u0440\u0430\u0437\u043c\u0435\u0440\u044b \u0438 \u0432\u044b\u0445\u043e\u0434\u0438\u0442\u044c \u0437\u0430 \u043a\u0440\u0430\u044f \u044d\u043a\u0440\u0430\u043d\u0430.<\/li><li><strong>new Container<\/strong>&nbsp;\u2013 \u0441\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e\u043c padding \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u0432\u043d\u0443\u0442\u0440\u0438 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430 \u043e\u0442\u0441\u0442\u0443\u043f\u044b, \u0442\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0442\u0435\u043a\u0441\u0442 \u043d\u0435 \u0431\u0443\u0434\u0435\u0442 \u0432\u043f\u0440\u0438\u0442\u044b\u043a \u043a \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044e \u0438\u043b\u0438 \u043a\u0440\u0430\u044f\u043c \u044d\u043a\u0440\u0430\u043d\u0430.<\/li><\/ol><\/li><li><strong>new Text(_title, style: new TextStyle(fontSize: 20.0), overflow: TextOverflow.ellipsis)<\/strong>&nbsp;\u2013 \u0434\u043b\u044f \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430 \u043d\u043e\u0432\u043e\u0441\u0442\u0438 \u043c\u044b \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043b\u0438 \u0441\u0442\u0438\u043b\u044c \u0441 \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u043d\u044b\u043c \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u0438 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e overflow \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0431\u0440\u0435\u0437\u0430\u0442\u044c \u0441\u043b\u0438\u0448\u043a\u043e\u043c \u0434\u043b\u0438\u043d\u043d\u044b\u0439 \u0442\u0435\u043a\u0441\u0442<\/li><li><strong>new Expanded(child:new Text(_text, softWrap: true, textAlign: TextAlign.justify))<\/strong>&nbsp;\u2013 \u043a \u0432\u0438\u0434\u0436\u0435\u0442\u0443 \u0442\u0435\u043a\u0441\u0442\u0430 \u043c\u044b \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441 \u0442\u0435\u043a\u0441\u0442\u0430 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 softWrap, \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u0438 \u0432\u044b\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u043d\u0438\u0435 \u0442\u0435\u043a\u0441\u0442\u0430 \u043f\u043e \u0448\u0438\u0440\u0438\u043d\u0435, \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441\u043b\u0438\u0448\u043a\u043e\u043c \u0434\u043b\u0438\u043d\u043d\u043e\u0433\u043e \u0442\u0435\u043a\u0441\u0442\u0430, \u0432\u0438\u0434\u0436\u0435\u0442 Expanded \u043e\u0431\u0440\u0435\u0436\u0435\u0442 \u0432\u0441\u0435 \u0442\u043e \u0447\u0442\u043e \u043d\u0435 \u0432\u043e\u0439\u0434\u0435\u0442 \u043f\u043e \u0432\u044b\u0441\u043e\u0442\u0435.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"part1_2\">\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBox<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u0415\u0441\u043b\u0438 \u0437\u0430\u0434\u0430\u043d \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 imageurl<\/h4>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/flutter.su\/data\/d630c3a0de4f09a6296d50af67753330.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/flutter.su\/data\/d630c3a0de4f09a6296d50af67753330.png\" alt=\"\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBox \u0415\u0441\u043b\u0438 \u0437\u0430\u0434\u0430\u043d \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 imageurl\"\/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/flutter.su\/data\/a5761032c81ba7b572f109df44e62de9.png\" alt=\"\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBox \u0415\u0441\u043b\u0438 \u0437\u0430\u0434\u0430\u043d \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 imageurl\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u0415\u0441\u043b\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 imageurl \u043d\u0435 \u0437\u0430\u0434\u0430\u043d<\/h4>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/flutter.su\/data\/47cdbfc00902727d377f9321eebc8654.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/flutter.su\/data\/47cdbfc00902727d377f9321eebc8654.png\" alt=\"\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBox \u0415\u0441\u043b\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 imageurl \u043d\u0435 \u0437\u0430\u0434\u0430\u043d\"\/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/flutter.su\/data\/a8f3f8784ad5818045b2c4a4996f2636.png\" alt=\"\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBox \u0415\u0441\u043b\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 imageurl \u043d\u0435 \u0437\u0430\u0434\u0430\u043d\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"part2\">2. StatefulWidget<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>StatefulWidget<\/strong>&nbsp;\u2013 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432, \u0441 \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u043c \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0438\u043c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c.<br>\u0412 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u0432\u044b\u0448\u0435 \u043c\u044b \u0441\u043e\u0437\u0434\u0430\u043b\u0438 \u043a\u043b\u0430\u0441\u0441, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0435\u0442\u044c \u043f\u043e \u0440\u0430\u0437\u043d\u043e\u043c\u0443 \u0435\u0441\u043b\u0438 \u0432 \u043d\u0435\u043c \u0435\u0441\u0442\u044c \u0438\u043b\u0438 \u043d\u0435\u0442 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f, \u043e \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e \u043f\u0440\u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u0434 \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u043c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c \u043f\u043e\u043d\u0438\u043c\u0430\u0435\u0442\u0441\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0433\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u043a\u0430\u043a\u043e\u0433\u043e-\u0442\u043e \u0441\u043e\u0431\u044b\u0442\u0438\u044f (\u043f\u043e \u043d\u0430\u0436\u0430\u0442\u0438\u044e, \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0438 \u043f\u0440.) \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u043d\u0443\u0436\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u0432\u0438\u0434\u0436\u0435\u0442 \u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430 StatefulWidget.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u0438\u0434\u0436\u0435\u0442\u044b, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0430\u0441\u043b\u0435\u0434\u0443\u044e\u0442\u0441\u044f \u043e\u0442 StatefulWidget:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>class Image()<\/li><li>class Form()<\/li><li>\u0438 \u0434\u0440.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0430\u043c\u0430\u044f \u043f\u0440\u043e\u0441\u0442\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0436\u0435\u0442\u0430 \u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430 StatefulWidget:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class MyWidget extends StatefulWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">createState() =&gt; new MyWidgetState();<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class MyWidgetState extends State&lt;MyWidget&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Widget build(BuildContext context) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">return new Text(<em>&#8216;my text&#8217;<\/em>);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0432\u0438\u0434\u0436\u0435\u0442\u0430 \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0442 \u0442\u043e\u0439 \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043c\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043b\u0438 \u0440\u0430\u043d\u044c\u0448\u0435:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>MyWidget<\/strong>&nbsp;\u2013 \u043d\u0430\u0448 \u043a\u043b\u0430\u0441\u0441 \u0434\u043e\u043b\u0436\u0435\u043d \u0438\u043c\u0435\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0438&nbsp;<strong>createState()<\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0434\u043e\u043b\u0436\u043d\u0430 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0442\u044c \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440 \u043a\u043b\u0430\u0441\u0441\u0430 \u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430&nbsp;<strong>State<\/strong><\/li><li><strong>@override<\/strong>&nbsp;\u2013 \u0430\u043d\u043d\u043e\u0442\u0430\u0446\u0438\u044f \u043f\u0435\u0440\u0435\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u043d\u0430 \u0442\u043e, \u0447\u0442\u043e \u043f\u043e\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0435 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u0442 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430 \u043e\u0442 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0438\u0434\u0435\u0442 \u043d\u0430\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435.<br>\u041d\u0435\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u043e\u0439 \u0430\u043d\u043d\u043e\u0442\u0430\u0446\u0438\u0438 \u043d\u0435 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043e\u0448\u0438\u0431\u043a\u0430\u043c, \u043d\u043e \u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e \u0434\u043b\u044f \u043f\u043e\u043d\u0438\u043c\u0430\u043d\u0438\u044f \u043a\u043e\u0434\u0430<\/li><li><strong>createState() =&gt; new MyWidgetState();<\/strong>&nbsp;\u2013 \u044d\u0442\u043e \u043a\u0440\u0430\u0442\u043a\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c<br><strong>createState() {return new MyWidgetState();}<\/strong>&nbsp;\u2013 \u0442\u0430\u043a \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u043f\u0440\u0438\u0432\u044b\u0447\u043d\u0430\u044f \u0434\u043b\u044f \u043c\u043d\u043e\u0433\u0438\u0445 \u043f\u043e\u043b\u043d\u0430\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u0438 (\u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0438 \u0435\u0435).<\/li><li><strong>MyWidgetState<\/strong>&nbsp;\u2013 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u0437\u043d\u0430\u043a\u043e\u043c\u0443\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u044e&nbsp;<strong>build<\/strong>&nbsp;\u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u0430 \u0442\u043e\u043c\u0443 \u043a\u0430\u043a \u043c\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043b\u0438 \u0440\u0430\u043d\u044c\u0448\u0435 \u0432 \u0432\u0438\u0434\u0436\u0435\u0442\u0435 \u043e\u0442 \u0441\u0443\u043f\u0435\u0440\u043a\u043b\u0430\u0441\u0441\u0430 StatelessWidget<\/li><li><strong>setState(() {});<\/strong>&nbsp;\u2013 \u0442\u0435\u043f\u0435\u0440\u044c \u0432\u044b\u0437\u044b\u0432\u0430\u044f \u0442\u0430\u043a\u0443\u044e \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044e \u043f\u0440\u0438 \u0441\u043e\u0431\u044b\u0442\u0438\u0438 \u0432 \u043d\u0430\u0448\u0435\u043c \u0432\u0438\u0434\u0436\u0435\u0442\u0435 \u0438\u043b\u0438 \u0434\u043e\u0447\u0435\u0440\u043d\u0438\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u0445, \u043c\u044b \u0441\u043c\u043e\u0436\u0435\u043c \u0432\u044b\u0437\u044b\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0435 \u043d\u0430\u0448\u0435\u0433\u043e \u0432\u0438\u0434\u0436\u0435\u0442\u0430<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0437\u044c\u043c\u0435\u043c \u043d\u0430\u0448 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0439 \u0432\u0438\u0434\u0436\u0435\u0442 \u0434\u043b\u044f \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043d\u043e\u0432\u043e\u0441\u0442\u043d\u044b\u0445 \u0430\u043d\u043e\u043d\u0441\u043e\u0432 \u0438 \u0434\u043e\u0431\u0430\u0432\u0438\u043c \u0432 \u043d\u0435\u0433\u043e \u043a\u043d\u043e\u043f\u043a\u0443 \u00ab\u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435\u00bb \u0438 \u0441\u0447\u0435\u0442\u0447\u0438\u043a \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u0443\u0434\u0435\u0442 \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043b\u044e\u0434\u0435\u0439 \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u043e \u043d\u043e\u0432\u043e\u0441\u0442\u044c \u0432 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435. \u0422.\u0435. \u0443 \u043d\u0430\u0441 \u0431\u0443\u0434\u0435\u0442 \u0434\u0432\u0430 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f: \u00ab\u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435\u00bb \u0438 \u00ab\u043d\u0435 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435\u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0438\u0437\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0431\u0443\u0434\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043a\u043d\u043e\u043f\u043a\u0430 \u0438 \u0441\u0447\u0435\u0442\u0447\u0438\u043a, \u0442\u043e \u043c\u044b \u0438 \u043e\u0431\u0435\u0440\u043d\u0435\u043c \u0438\u0445 \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0432\u0438\u0434\u0436\u0435\u0442&nbsp;<strong>class NewsBoxFavourit extends StatefulWidget<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBoxFavourit extends StatefulWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final int _num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final bool _like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBoxFavourit(this._num, this._like);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">createState() =&gt; new NewsBoxFavouritState(_num, _like);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBoxFavouritState extends State&lt;NewsBoxFavourit&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bool like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBoxFavouritState(this.num, this.like);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void pressButton() {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">setState(() {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">like = !like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">if(like) num++;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">else num&#8211;;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Widget build(BuildContext context) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">return new Column(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Text(<em>&#8216;\u0412 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u043c<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>$num&#8217;<\/em>, textAlign: TextAlign.center),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new IconButton(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">icon: new Icon(like ? Icons.star : Icons.star_border, size: 30.0, color: Colors.blue[500]),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">onPressed: pressButton<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">]);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043d\u0430\u0448\u0435\u043c \u043a\u043b\u0430\u0441\u0441\u0435&nbsp;<strong>NewsBoxFavourit<\/strong>&nbsp;\u043c\u044b \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u0434\u0432\u0430 \u0441\u043a\u0440\u044b\u0442\u044b\u0445 \u043f\u043e\u043b\u044f&nbsp;<strong>_num<\/strong>&nbsp;\u0438&nbsp;<strong>_like<\/strong>, \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440&nbsp;<strong>NewsBoxFavourit(this._num, this._like)<\/strong>, \u043f\u043e\u0441\u043b\u0435 \u043e\u043d\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0435\u0442\u0441\u044f \u0432 \u043a\u043b\u0430\u0441\u0441 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u00ab\u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435\u00bb&nbsp;<strong>createState() =&gt; new NewsBoxFavouritState(_num, _like)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043a\u043b\u0430\u0441\u0441\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f&nbsp;<strong>class NewsBoxFavouritState extends State<\/strong>&nbsp;\u043c\u044b \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u043e\u0434\u043d\u043e\u0438\u043c\u0435\u043d\u043d\u044b\u0435 \u043f\u043e\u043b\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0443\u0442 \u043e\u043d\u0438 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u044b\u0435 \u0438 \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u043b\u044f&nbsp;<strong>num<\/strong>&nbsp;\u0438&nbsp;<strong>like<\/strong>&nbsp;\u0432 \u043a\u043b\u0430\u0441\u0441\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u043c\u043e\u0436\u043d\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u044b\u043c\u0438, \u043d\u043e \u043c\u044b \u0442\u0430\u043a \u0441\u0434\u0435\u043b\u0430\u043b\u0438 \u043d\u0430\u043c\u0435\u0440\u0435\u043d\u043d\u043e, \u0447\u0442\u043e\u0431\u044b \u043d\u0430 \u043c\u043e\u043c\u0435\u043d\u0442 \u0438\u0437\u0443\u0447\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u043e\u0433\u043e \u0443\u0440\u043e\u043a\u0430 \u043d\u0435 \u0431\u044b\u043b\u043e \u043f\u0443\u0442\u0430\u043d\u0438\u0446\u044b \u2013 \u043a\u0430\u043a\u0438\u0435 \u0438\u0437 \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u043c\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f (\u0442\u0435 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u044b\u0435, \u0432 \u043a\u043b\u0430\u0441\u0441\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440&nbsp;<strong>NewsBoxFavouritState(this.num, this.like)<\/strong>&nbsp;\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u0442 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435 \u0432 \u043a\u043b\u0430\u0441\u0441\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u041f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0438\u0437 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 \u0431\u0435\u0437 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440\u0430 \u043c\u043e\u0436\u043d\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 widget<\/strong>, \u0434\u043b\u044f \u043d\u0430\u0448\u0435\u0433\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u0430:&nbsp;<strong>widget._num<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0422\u0430\u043a \u043a\u0430\u043a \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435&nbsp;<strong>_num<\/strong>&nbsp;\u0438&nbsp;<strong>_like<\/strong>&nbsp;\u0432 \u0432\u0438\u0434\u0436\u0435\u0442\u0435&nbsp;<strong>NewsBoxFavourit<\/strong>&nbsp;\u043d\u0435 \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0435, \u043c\u044b \u043d\u0435 \u043c\u043e\u0436\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0438\u0445 \u043d\u0430\u043f\u0440\u044f\u043c\u0443\u044e, \u0438 \u0434\u043e\u043b\u0436\u043d\u044b \u043f\u0435\u0440\u0435\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0432&nbsp;<strong>NewsBoxFavouritState<\/strong>&nbsp;\u0442\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBoxFavouritState extends State&lt;NewsBoxFavourit&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bool like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void initState() {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">num = widget._num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">like = widget._like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">super.initState();<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<strong>\/\/&#8230;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>void pressButton() {<\/strong>&nbsp;\u2013 \u043c\u044b \u0432\u044b\u043d\u0435\u0441\u043b\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043d\u0430\u0436\u0430\u0442\u0438\u044f \u043d\u0430 \u043a\u043d\u043e\u043f\u043a\u0443 \u0432 \u043a\u043b\u0430\u0441\u0441, \u0447\u0442\u043e\u0431\u044b \u0432\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u043e \u0440\u0430\u0437\u0433\u0440\u0443\u0437\u0438\u0442\u044c \u043a\u043e\u0434 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b, \u0442\u0430\u043a\u0436\u0435 \u044d\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0434\u043d\u0443 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0432 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u0430\u0445 \u0438\u043b\u0438 \u043f\u0440\u0438 \u0440\u0430\u0437\u043d\u044b\u0445 \u0441\u043e\u0431\u044b\u0442\u0438\u044f\u0445.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>setState()<\/strong>&nbsp;\u2013 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u0442 \u0444\u0443\u043d\u043a\u0446\u0438\u044e, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043c\u044b \u0441\u0434\u0435\u043b\u0430\u043b\u0438 \u0441\u043c\u0435\u043d\u0443 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f, \u043f\u043e\u0441\u043b\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u043d\u043d\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438&nbsp;<strong>setState<\/strong>&nbsp;\u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0435 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 \u0447\u0435\u0440\u0435\u0437 \u0444\u0443\u043d\u043a\u0446\u0438\u044e&nbsp;<strong>build()<\/strong>&nbsp;\u0432 \u043a\u043b\u0430\u0441\u0441\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0415\u0449\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u043d\u0430\u0448\u0435\u0439 \u043a\u043d\u043e\u043f\u043a\u0438 \u043c\u043e\u0436\u043d\u043e \u0431\u044b\u043b\u043e \u043e\u043f\u0438\u0441\u0430\u0442\u044c \u0442\u0430\u043a:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void pressButton() {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">like = !like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">if(like) num++;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">else num&#8211;;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">setState(() {});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0440\u0430\u0431\u043e\u0442\u044b \u0431\u044b\u043b \u0431\u044b \u0442\u0430\u043a\u0438\u043c \u0436\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>like = !like<\/strong>&nbsp;\u2013 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442 \u0441\u043c\u0435\u043d\u0443 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f, \u0435\u0441\u043b\u0438 \u0443 \u043d\u0430\u0441 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0431\u044b\u043b\u043e false \u2013 \u0442\u043e \u0441\u0442\u0430\u043d\u0435\u0442 \u043f\u0440\u043e\u0442\u0438\u0432\u043e\u043f\u043e\u043b\u043e\u0436\u043d\u044b\u043c \u2013 true, \u0438 \u043d\u0430\u043e\u0431\u043e\u0440\u043e\u0442 \u0441 true.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>if(like) num++; else num&#8211;;<\/strong>&nbsp;\u2013 \u0443 \u043d\u0430\u0441 \u0441\u043c\u0435\u043d\u0438\u043b\u043e\u0441\u044c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0438 \u0442\u0435\u043f\u0435\u0440\u044c \u0435\u0441\u043b\u0438 \u043c\u044b \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u0438 \u043d\u043e\u0432\u043e\u0441\u0442\u044c \u0432 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435 \u0442\u043e \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0442\u043e\u0447\u043d\u043e \u0443\u0432\u0435\u043b\u0438\u0447\u0438\u0442\u0441\u044f \u043d\u0430 \u043e\u0434\u0438\u043d, \u043f\u043e \u044d\u0442\u043e\u043c\u0443 \u043c\u044b \u043f\u0440\u0438\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u043a \u0441\u0447\u0435\u0442\u0447\u0438\u043a\u0443 \u0435\u0434\u0438\u043d\u0438\u0446\u0443. \u0418 \u043d\u0430 \u043e\u0431\u043e\u0440\u043e\u0442, \u0435\u0441\u043b\u0438 \u043c\u044b \u043a\u043e\u0433\u0434\u0430-\u0442\u043e \u0443\u0436\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u043b\u0438 \u0432 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u0435, \u0430 \u0442\u0435\u043f\u0435\u0440\u044c \u0443\u0431\u0438\u0440\u0430\u0435\u043c \u0441\u0432\u043e\u0439 \u0432\u044b\u0431\u043e\u0440 \u2013 \u043c\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u043e\u0442\u043d\u044f\u0442\u044c \u0435\u0434\u0438\u043d\u0438\u0446\u0443 \u0432 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439&nbsp;<strong>num<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u0444\u0443\u043d\u043a\u0446\u0438\u0438&nbsp;<strong>build<\/strong>&nbsp;\u043a\u043b\u0430\u0441\u0441\u0430&nbsp;<strong>NewsBoxFavouritState<\/strong>&nbsp;\u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0432\u044b\u0432\u043e\u0434 \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432 \u0441 \u0443\u0447\u0435\u0442\u043e\u043c \u043d\u0430\u0448\u0438\u0445 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445&nbsp;<strong>num<\/strong>&nbsp;\u0438&nbsp;<strong>like<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>new Text(&#8216;\u0412 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u043c $num&#8217;, textAlign: TextAlign.center)<\/strong>&nbsp;\u2013 \u0432\u0438\u0434\u0436\u0435\u0442 \u0442\u0435\u043a\u0441\u0442\u0430 \u0432\u044b\u0432\u043e\u0434\u0438\u0442 \u0432 \u0434\u0432\u0435 \u0441\u0442\u0440\u043e\u043a\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 ( \u2013 \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u043f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0440\u043e\u043a\u0438)<br><strong>$num<\/strong>&nbsp;\u2013 \u044d\u0442\u043e \u0432\u044b\u0437\u043e\u0432 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u0441\u0447\u0435\u0442\u0447\u0438\u043a\u0430 \u0432 \u0441\u0442\u0440\u043e\u043a\u0435, \u043c\u043e\u0436\u043d\u043e \u0435\u0449\u0435 \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0442\u0430\u043a&nbsp;<strong>&#8216;\u0412 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u043c ${num}&#8217;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>IconButton<\/strong>&nbsp;\u2013 \u0432\u0438\u0434\u0436\u0435\u0442 \u043a\u043d\u043e\u043f\u043a\u0438 \u0441 \u0438\u043a\u043e\u043d\u043a\u043e\u0439, \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b&nbsp;<strong>icon<\/strong>&nbsp;\u0438&nbsp;<strong>onPressed<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>icon: new Icon(like ? Icons.star : Icons.star_border, size: 30.0, color: Colors.blue[500])<\/strong>&nbsp;\u2013 \u0432 \u0432\u0438\u0434\u0436\u0435\u0442\u0435 Icon \u043f\u0435\u0440\u0432\u044b\u043c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u043e\u0431\u044a\u0435\u043a\u0442 \u043a\u043b\u0430\u0441\u0441\u0430&nbsp;<strong>IconData<\/strong>,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>like ? Icons.star : Icons.star_border<\/strong>&nbsp;\u2013 \u044d\u0442\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442&nbsp;<strong>Icons.star<\/strong>&nbsp;\u0435\u0441\u043b\u0438&nbsp;<strong>like == true<\/strong>, \u043b\u0438\u0431\u043e&nbsp;<strong>Icons.star_border<\/strong>&nbsp;\u0435\u0441\u043b\u0438 l<strong>ike == false<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>size: 30.0<\/strong>&nbsp;\u2013 \u0447\u0435\u0440\u0435\u0437 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440&nbsp;<strong>size<\/strong>&nbsp;\u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0435\u043b\u0438\u0447\u0438\u0442\u044c \u0438\u043b\u0438 \u0443\u043c\u0435\u043d\u044c\u0448\u0438\u0442\u044c \u0440\u0430\u0437\u043c\u0435\u0440 \u0438\u043a\u043e\u043d\u043a\u0438<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>color: Colors.blue[500]<\/strong>&nbsp;\u2013 \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u0442 \u043e\u0442\u0442\u0435\u043d\u043e\u043a \u0441\u0438\u043d\u0435\u0433\u043e \u0446\u0432\u0435\u0442\u0430 \u0434\u043b\u044f \u0438\u043a\u043e\u043d\u043a\u0438<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>onPressed: pressButton<\/strong>&nbsp;\u2013 \u0432\u044b\u0437\u043e\u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 pressButton \u043f\u0440\u0438 \u043d\u0430\u0436\u0430\u0442\u0438\u0438 \u043d\u0430 \u043a\u043d\u043e\u043f\u043a\u0443 \u0438\u0437 \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430&nbsp;<strong>NewsBoxFavouritState<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"part2_1\">\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBoxFavourit<\/h3>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/flutter.su\/data\/d9fa1358c5d32945c64ffc2fc7752024.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/flutter.su\/data\/d9fa1358c5d32945c64ffc2fc7752024.png\" alt=\"\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0432\u0438\u0434\u0436\u0435\u0442\u0430 NewsBoxFavourit\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"part2_2\">\u041b\u0438\u0441\u0442\u0438\u043d\u0433 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">import <em>&#8216;package:flutter\/material.dart&#8217;<\/em>;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBoxFavourit extends StatefulWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final int _num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final bool _like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBoxFavourit(this._num, this._like);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">createState() =&gt; new NewsBoxFavouritState(_num, _like);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBoxFavouritState extends State&lt;NewsBoxFavourit&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bool like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBoxFavouritState(this.num, this.like);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void pressButton() {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">setState(() {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">like = !like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">if(like) num++;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">else num&#8211;;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Widget build(BuildContext context) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">return new Column(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Text(<em>&#8216;\u0412 \u0438\u0437\u0431\u0440\u0430\u043d\u043d\u043e\u043c<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>$num&#8217;<\/em>, textAlign: TextAlign.center),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new IconButton(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">icon: new Icon(like ? Icons.star : Icons.star_border, size: 30.0, color: Colors.blue[500]),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">onPressed: pressButton<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">]);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class NewsBox extends StatelessWidget {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final String _title;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">final String _text;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">String _imageurl;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int _num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bool _like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NewsBox(this._title, this._text, {String imageurl, int num = 0, bool like = false}) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">_imageurl = imageurl;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">_num = num;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">_like = like;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@override<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Widget build(BuildContext context) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">if (_imageurl != null &amp;&amp; _imageurl != <em>&#8221;<\/em>) return new Container(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">color: Colors.black12,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">height: 100.0,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">child: new Row(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Image.network(_imageurl, width: 100.0, height: 100.0, fit: BoxFit.cover,),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child: new Container(padding: new EdgeInsets.all(5.0), child: new Column(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Text(_title, style: new TextStyle(fontSize: 20.0), overflow: TextOverflow.ellipsis),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child:new Text(_text, softWrap: true, textAlign: TextAlign.justify,))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">), new NewsBoxFavourit(_num, _like)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">])<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">return new Container(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">color: Colors.black12,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">height: 100.0,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">child: new Row(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child: new Container(padding: new EdgeInsets.all(5.0), child: new Column(children: [<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Text(_title, style: new TextStyle(fontSize: 20.0), overflow: TextOverflow.ellipsis),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new Expanded(child:new Text(_text, softWrap: true, textAlign: TextAlign.justify,))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">), new NewsBoxFavourit(_num, _like)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">])<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void main() =&gt; runApp(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">new MaterialApp(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">debugShowCheckedModeBanner: false,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">home: new Scaffold(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">appBar: new AppBar(),<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">body: new NewsBox(<em>&#8216;\u041d\u043e\u0432\u044b\u0439 \u0443\u0440\u043e\u043a \u043f\u043e Flutter&#8217;<\/em>, <em>&#8221;<\/em><em>&#8216;\u0412 \u043d\u043e\u0432\u043e\u043c \u0443\u0440\u043e\u043a\u0435 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f, \u0432 \u043a\u0430\u043a\u0438\u0445 \u0441\u043b\u0443\u0447\u0430\u044f\u0445 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c \u043a\u043b\u0430\u0441\u0441 StatelessWidget \u0438 StatefulWidget. \u041f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u044b \u043f\u0440\u0438\u043c\u0435\u0440\u044b \u0438\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f.&#8217;<\/em><em>&#8221;<\/em>,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">imageurl: <em>&#8216;https:\/\/flutter.su\/favicon.png&#8217;<\/em>, num: 10)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">);<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"part3\">3. \u0418\u0442\u043e\u0433\u0438<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>StatelessWidget<\/strong>&nbsp;\u2013 \u043d\u0443\u0436\u0435\u043d \u0442\u0430\u043c \u0433\u0434\u0435 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u043e\u0434\u043d\u043e \u0438 \u043e\u043d\u043e \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043e \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c\u0438 \u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0430\u043c \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b \u0437\u0430\u0440\u0430\u043d\u0435\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>StatefulWidget<\/strong>&nbsp;\u2013 \u043d\u0443\u0436\u0435\u043d \u043a\u043e\u0433\u0434\u0430 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0438\u0445 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439 \u0431\u043e\u043b\u044c\u0448\u0435 \u043e\u0434\u043d\u043e\u0433\u043e \u0438 \u043e\u043d\u0438 \u043c\u043e\u0433\u0443\u0442 \u0441\u043c\u0435\u043d\u044f\u0442\u044c \u0434\u0440\u0443\u0433 \u0434\u0440\u0443\u0433\u0430.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u0438\u0434\u0436\u0435\u0442\u044b \u043e\u0442 StatelessWidget \u0438 StatefulWidget \u043c\u043e\u0433\u0443\u0442 \u0432\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0434\u0440\u0443\u0433 \u0434\u0440\u0443\u0433\u0430.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u0438 Flutter SDK \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u044e\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c StatelessWidget \u0432\u0435\u0437\u0434\u0435, \u0433\u0434\u0435 \u043c\u043e\u0436\u043d\u043e \u043e\u0431\u043e\u0439\u0442\u0438\u0441\u044c \u0431\u0435\u0437 StatefulWidget \u2013 \u0441\u0432\u044f\u0437\u0430\u043d\u043e \u044d\u0442\u043e \u0441 \u0442\u0435\u043c \u0447\u0442\u043e \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0435 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u0441\u0442\u043e\u0438\u0442 \u043d\u0430\u043c\u043d\u043e\u0433\u043e \u0434\u043e\u0440\u043e\u0436\u0435. \u0422\u0430\u043a \u0436\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0441\u0432\u043e\u0434\u0438\u0442\u044c \u043a \u043c\u0438\u043d\u0438\u043c\u0443 \u0434\u043e\u0447\u0435\u0440\u043d\u0438\u0445 \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432 \u0432 StatefulWidget.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u043c \u0443\u0440\u043e\u043a\u0435 \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043b\u0438 \u043f\u0440\u0438\u043c\u0435\u0440 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0432\u0438\u0434\u0436\u0435\u0442\u043e\u0432, \u0441\u043e\u0437\u0434\u0430\u043b\u0438 \u0441\u0432\u043e\u0439 \u0432\u0438\u0434\u0436\u0435\u0442 MyBody \u043d\u0430\u0441\u043b\u0435\u0434\u0443\u0435\u043c\u044b\u0439 \u043e\u0442 \u043a\u043b\u0430\u0441\u0441\u0430 StatelessWidget. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[87],"tags":[],"class_list":["post-2147","page","type-page","status-publish","hentry","category-flutter"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/2147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/comments?post=2147"}],"version-history":[{"count":0,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/2147\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/media?parent=2147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/categories?post=2147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/tags?post=2147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}