{"id":2437,"date":"2020-04-11T00:34:29","date_gmt":"2020-04-10T16:34:29","guid":{"rendered":"https:\/\/www.csslayer.info\/wordpress\/?p=2437"},"modified":"2020-04-11T00:34:29","modified_gmt":"2020-04-10T16:34:29","slug":"qml-%e7%9a%84-repeater-%e5%92%8c-loader-%e7%bb%84%e5%90%88%e4%bd%bf%e7%94%a8%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/www.csslayer.info\/wordpress\/linux\/qt-linux\/qml-%e7%9a%84-repeater-%e5%92%8c-loader-%e7%bb%84%e5%90%88%e4%bd%bf%e7%94%a8%e9%97%ae%e9%a2%98\/","title":{"rendered":"QML \u7684 Repeater \u548c Loader \u7ec4\u5408\u4f7f\u7528\u95ee\u9898"},"content":{"rendered":"\n<p>Repeater\uff0c\u5728\u5bf9\u4e8e\u9700\u8981\u751f\u6210\u591a\u4e2a Item\uff0c\u4f46\u53c8\u4e0d\u9002\u5408 ListView \u7684\u60c5\u51b5\u662f\u5f88\u9002\u7528\u7684\u3002\u5bf9\u4e8e Repeater \u9700\u8981\u5d4c\u5957\u4e0d\u540c\u79cd\u7c7b\u7684 Delegate \u7684\u60c5\u51b5\uff0c\u6709\u4e00\u4e9b\u4e0d\u540c\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u4f60\u9488\u5bf9\u4e0d\u540c\u7684\u6570\u636e\u9700\u8981\u751f\u6210\u4e0d\u540c\u7684 Item A \u6216\u8005 Item B\uff0c\u90a3\u4e48\u4e00\u79cd\u9009\u62e9\u5c31\u662f\u628a\u4ed6\u4eec\u90fd\u4f5c\u4e3a\u5b50 Item \u653e\u5230 Delegate \u91cc\u9762\uff0c\u7136\u540e\u9009\u62e9\u6027\u7684\u8fdb\u884c visible \u7684\u8bbe\u7f6e\uff0c\u6765\u8fbe\u5230\u53ea\u73b0\u5b9e\u4e00\u4e2a\u7684\u76ee\u7684\u3002\u8fd9\u6837\u5e26\u6765\u7684\u7f3a\u70b9\u4e5f\u662f\u663e\u800c\u6613\u89c1\u7684\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u9700\u8981\u771f\u7684\u5b9e\u9645\u521b\u5efa\u591a\u4e2a\u5e76\u4e0d\u4f7f\u7528\u7684 Item<\/li><li>\u5bf9\u4e0d\u540c\u7684 Item \u8bbe\u7f6e\u503c\u7684\u65f6\u5019\uff0c\u53ef\u80fd\u5e76\u4e0d\u4e00\u5b9a\u4f1a\u6709\u9002\u5408\u5f53\u524d\u4e0d\u663e\u793a\u7684\u8fd9\u4e2a Item \u7684\u503c\u3002\u4f8b\u5982\uff0c\u67d0\u9879\u5c5e\u6027\u5e76\u4e0d\u89c1\u4e8e Type B\u4e2d\uff0c\u5728\u5b9e\u73b0\u7684\u65f6\u5019\u5374\u4e0d\u5f97\u4e0d\u653e\u8fdb\u4e00\u4e2a dummy value \u6765\u907f\u514d\u7a0b\u5e8f\u9519\u8bef\u3002<\/li><\/ul>\n\n\n\n<p>\u800c\u53e6\u4e00\u79cd\u9009\u62e9\u5c31\u662f\uff0c\u4f1a\u9009\u62e9 Repeater \u5d4c\u5957\u4e00\u4e2a Loader \uff0c\u7528 loader \u6765\u52a8\u6001\u7684\u9009\u62e9\u52a0\u8f7d\u67d0\u4e2a\u6e90\u6587\u4ef6\uff0c\u6216\u8005 Component\uff0c\u901a\u8fc7\u4f7f\u7528 Loader \u7684 source \/ setSource \/ sourceComponent \u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u5982\u679c\u4f60\u8981\u8fdb\u884c\u591a\u5c42\u6b21\u7684\u5d4c\u5957\uff0c\u4e5f\u5373\u5728 Loader \u91cc\u9762\u518d\u5957\u4e00\u4e2a Repeater\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e00\u4e2a\u5947\u5999\u7684\u73b0\u8c61\u3002<\/p>\n\n\n\n<p>\u4e3e\u4e24\u4e2a\u4f8b\u5b50\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import QtQuick 2.2\nimport QtQuick.Layouts 1.1\nimport QtQuick.Controls 2.10\n\nGridLayout {\n    columns: 2\n\n    Repeater {\n        model: &#91;&#91;1], &#91;2], &#91;3, 4, 5], &#91;4], &#91;5, 6]]\n        delegate: Component {\n            id: comp\n            Repeater {\n                model: modelData\n                Label {\n                    text: modelData\n                }\n            }\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u662f\u4e00\u4e2a\u4e0d\u4f7f\u7528 Loader \u7684\u5d4c\u5957 Repeater\uff0c\u4e0b\u9762\u5219\u662f\u4e00\u4e2a\u4f7f\u7528 Loader \u7684\u5d4c\u5957 Repeater\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import QtQuick 2.2\nimport QtQuick.Layouts 1.1\nimport QtQuick.Controls 2.10\n\nGridLayout {\n    columns: 2\n\n    Repeater {\n        model: &#91;&#91;1], &#91;2], &#91;3, 4, 5], &#91;4], &#91;5, 6]]\n        delegate: Loader {\n            id: loader\n            sourceComponent: comp\n            Component {\n                id: comp\n                Repeater {\n                    model: modelData\n                    Label {\n                        text: modelData\n                    }\n                }\n           }\n       }\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e24\u4e2a\u4ee3\u7801\u6700\u7ec8\u7684\u663e\u793a\u6548\u679c\uff0c\u662f\u4e0d\u4e00\u6837\u7684\u3002\u524d\u8005\u53ef\u4ee5\u6b63\u5e38\u663e\u793a\u8868\u683c\uff0c\u5c31\u4eff\u4f5b\u5185\u5c42\u7684Repeater \u7684\u5143\u7d20\u5c31\u662f\u5728 GridLayout \u91cc\u4e00\u6837\u3002<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"72\" height=\"233\" src=\"https:\/\/www.csslayer.info\/wordpress\/wp-content\/uploads\/2020\/04\/\u56fe\u7247.png\" alt=\"\" class=\"wp-image-2438\"\/><\/figure>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>\u800c\u540e\u8005\u6240\u6709\u7684\u5143\u7d20\u90fd\u6324\u5728\u4e86\u4e00\u8d77\u3002<\/p>\n\n\n\n<div class=\"wp-block-group alignwide\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group alignwide\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"249\" src=\"https:\/\/www.csslayer.info\/wordpress\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-5.png\" alt=\"\" class=\"wp-image-2443\"\/><\/figure>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>\u539f\u56e0\u5927\u6982\u662f\u56e0\u4e3a\u4f7f\u7528\u4e86 Loader \u7684\u60c5\u5f62\u4e0b\uff0cLoader \u672c\u8eab\u5728\u5c42\u6b21\u5173\u7cfb\u4e2d\u5360\u6709\u4e86\u4e00\u5c42\uff0c\u5c31\u50cf \u4e00\u4e2a\u666e\u901a\u7684 Item\u3002Loader \u5185\u90e8\u7684 Repeater \u5e76\u4e0d\u80fd\u8de8\u8d8a Loader \u672c\u8eab\u628a\u5185\u90e8\u7684 Item \u6dfb\u52a0\u7ed9 GridLayout\u3002\u4e8b\u5b9e\u4e0a\uff0c\u5982\u679c\u4f60\u5728\u4ee3\u7801\u4e2d\u628a Loader \u76f4\u63a5\u6539\u6210 Item \u5c31\u53ef\u4ee5\u83b7\u5f97\u540e\u56fe\u4e00\u6837\u7684\u6548\u679c\uff0c\u53ef\u4ee5\u5370\u8bc1\u8fd9\u4e00\u70b9\u3002<\/p>\n\n\n\n<p>\u53ea\u80fd\u8bf4\u5e76\u6ca1\u6709\u4e00\u4e2a\u597d\u529e\u6cd5\u80fd\u591f\u89e3\u51b3\u8fd9\u6837\u7684\u95ee\u9898\uff0c\u6700\u597d\u7684\u89e3\u51b3\u529e\u6cd5\uff0c\u8fd8\u662f\u76f4\u63a5\u628a Model \u6241\u5e73\u5316\u53ea\u4f7f\u7528\u4e00\u5c42 Repeater \u548c Loader \u7684\u7ec4\u5408\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Repeater\uff0c\u5728\u5bf9\u4e8e\u9700\u8981\u751f\u6210\u591a\u4e2a Item\uff0c\u4f46\u53c8\u4e0d\u9002\u5408 ListView \u7684\u60c5\u51b5\u662f\u5f88\u9002\u7528\u7684\u3002\u5bf9\u4e8e Repeater \u9700\u8981\u5d4c\u5957\u4e0d\u540c\u79cd\u7c7b\u7684 Delegate \u7684\u60c5\u51b5\uff0c\u6709\u4e00\u4e9b\u4e0d\u540c\u7684\u89e3\u51b3\u65b9\u6848\u3002 \u4f8b\u5982\uff0c\u4f60\u9488\u5bf9\u4e0d\u540c\u7684\u6570\u636e\u9700\u8981\u751f\u6210\u4e0d\u540c\u7684 Item A \u6216\u8005 Item B\uff0c\u90a3\u4e48\u4e00\u79cd\u9009\u62e9\u5c31\u662f\u628a\u4ed6\u4eec\u90fd\u4f5c\u4e3a\u5b50 Item \u653e\u5230 Delegate \u91cc\u9762\uff0c\u7136\u540e\u9009\u62e9\u6027\u7684\u8fdb\u884c visible \u7684\u8bbe\u7f6e\uff0c\u6765\u8fbe\u5230\u53ea\u73b0\u5b9e\u4e00\u4e2a\u7684\u76ee\u7684\u3002\u8fd9\u6837\u5e26\u6765\u7684\u7f3a\u70b9\u4e5f\u662f\u663e\u800c\u6613\u89c1\u7684\uff1a \u9700\u8981\u771f\u7684\u5b9e\u9645\u521b\u5efa\u591a\u4e2a\u5e76\u4e0d\u4f7f\u7528\u7684 Item \u5bf9\u4e0d\u540c\u7684 Item \u8bbe\u7f6e\u503c\u7684\u65f6\u5019\uff0c\u53ef\u80fd\u5e76\u4e0d\u4e00\u5b9a\u4f1a\u6709\u9002\u5408\u5f53\u524d\u4e0d\u663e\u793a\u7684\u8fd9\u4e2a Item \u7684\u503c\u3002\u4f8b\u5982\uff0c\u67d0\u9879\u5c5e\u6027\u5e76\u4e0d\u89c1\u4e8e Type B\u4e2d\uff0c\u5728\u5b9e\u73b0\u7684\u65f6\u5019\u5374\u4e0d\u5f97\u4e0d\u653e\u8fdb\u4e00\u4e2a dummy value \u6765\u907f\u514d\u7a0b\u5e8f\u9519\u8bef\u3002 \u800c\u53e6\u4e00\u79cd\u9009\u62e9\u5c31\u662f\uff0c\u4f1a\u9009\u62e9 Repeater \u5d4c\u5957\u4e00\u4e2a Loader \uff0c\u7528 loader \u6765\u52a8\u6001\u7684\u9009\u62e9\u52a0\u8f7d\u67d0\u4e2a\u6e90\u6587\u4ef6\uff0c\u6216\u8005 Component\uff0c\u901a\u8fc7\u4f7f\u7528 &hellip; <a href=\"https:\/\/www.csslayer.info\/wordpress\/linux\/qt-linux\/qml-%e7%9a%84-repeater-%e5%92%8c-loader-%e7%bb%84%e5%90%88%e4%bd%bf%e7%94%a8%e9%97%ae%e9%a2%98\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[91],"tags":[247],"class_list":["post-2437","post","type-post","status-publish","format-standard","hentry","category-qt-linux","tag-qml"],"_links":{"self":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/2437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/comments?post=2437"}],"version-history":[{"count":2,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/2437\/revisions"}],"predecessor-version":[{"id":2445,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/2437\/revisions\/2445"}],"wp:attachment":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/media?parent=2437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/categories?post=2437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/tags?post=2437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}