{"id":1275,"date":"2022-10-03T20:55:49","date_gmt":"2022-10-03T12:55:49","guid":{"rendered":"https:\/\/fireinsect.top\/?p=1275"},"modified":"2024-03-21T17:03:46","modified_gmt":"2024-03-21T09:03:46","slug":"kotlin%e5%ae%89%e5%8d%93%e5%bc%80%e5%8f%91%e5%ad%a6%e4%b9%a05","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2022\/10\/03\/kotlin%e5%ae%89%e5%8d%93%e5%bc%80%e5%8f%91%e5%ad%a6%e4%b9%a05\/","title":{"rendered":"Kotlin\u5b89\u5353\u5f00\u53d1\u5b66\u4e60(5)"},"content":{"rendered":"\n<p class=\"has-large-font-size\">\u5728Activity\u4e2d\u4f7f\u7528Menu<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>\u60f3\u8981\u5728activity\u5185\u4f7f\u7528\u83dc\u5355\uff0c\u9700\u8981\u4e13\u95e8\u53bb\u521b\u5efa\u83dc\u5355\u5e03\u5c40\uff0c\u83dc\u5355\u5e03\u5c40\u88ab\u7edf\u4e00\u653e\u5728menu\u8d44\u6e90\u6587\u4ef6\u5939\u4e0b\uff0c\u901a\u8fc7\u521b\u5efaMenu resource \ufb01le\u6765\u521b\u5efa\u83dc\u5355\u5e03\u5c40\u3002<\/p>\n\n\n\n<p>\u5185\u90e8\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"xml\" class=\"language-xml\">&lt;menu xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"&gt;\n &lt;item\n   android:id=\"@+id\/add_item\"\n   android:title=\"Add\"\/&gt;\n &lt;item\n   android:id=\"@+id\/remove_item\"\n   android:title=\"Remove\"\/&gt;\n&lt;\/menu&gt;<\/code><\/pre>\n\n\n\n<p>item\u8868\u793a\u83dc\u5355\u5185\u90e8\u83dc\u5355\u9879\uff0c\u9700\u8981\u6307\u5b9aid\u548c\u5185\u5bb9title<\/p>\n\n\n\n<p class=\"has-large-font-size\">\u4f7f\u7528\u83dc\u5355\u5e03\u5c40<\/p>\n\n\n\n<p>\u5728activity\u5185\u91cd\u5199onCreateOptionsMenu()\u65b9\u6cd5\u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin\">override fun onCreateOptionsMenu(menu: Menu?): Boolean {\n   menuInflater.inflate(R.menu.main, menu)\n   return true\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684menuInflater\u5b9e\u9645\u4e0a\u662f\u8c03\u7528\u4e86\u7236\u7c7b\u7684getMenuInflater()\u65b9\u6cd5\u5f97\u5230\u4e86\u5bf9\u8c61\uff0c\u5728\u8c03\u7528\u5b83\u7684inflate()\u65b9\u6cd5\uff0c\u5176\u4f20\u5165\u4e24\u4e2a\u53c2\u6570\u7b2c\u4e00\u4e2a\u53c2\u6570\u7528\u4e8e\u6307\u5b9a\u6211\u4eec\u901a\u8fc7\u54ea\u4e00\u4e2a\u8d44\u6e90\u6587\u4ef6\u6765\u521b\u5efa\u83dc\u5355\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7528\u4e8e\u6307\u5b9a\u6211\u4eec\u7684\u83dc\u5355\u9879\u5c06\u6dfb\u52a0\u5230\u54ea\u4e00\u4e2aMenu\u5bf9\u8c61\u5f53\u4e2d\u3002\u6700\u540e\u7ed9\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56detrue\uff0c\u8868\u793a\u5141\u8bb8\u521b\u5efa\u7684\u83dc\u5355\u663e\u793a\u51fa\u6765\uff0c\u5982\u679c\u8fd4\u56de\u4e86false\uff0c\u521b\u5efa\u7684\u83dc\u5355\u5c06\u65e0\u6cd5\u663e\u793a\u3002<\/p>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u5f53\u7136\uff0c\u5149\u521b\u5efa\u51fa\u83dc\u5355\u4e0d\u884c\uff0c\u6211\u4eec\u4e5f\u5f97\u7ed9\u83dc\u5355\u6dfb\u52a0\u70b9\u51fb\u4e8b\u4ef6\uff0c\u91cd\u5199onOptionsItemSelected()\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin\">override fun onOptionsItemSelected(item: MenuItem): Boolean {\n   when (item.itemId) {\n      R.id.add_item -&gt; Toast.makeText(this, \"You clicked Add\",\n                                 Toast.LENGTH_SHORT).show()\n      R.id.remove_item -&gt; Toast.makeText(this, \"You clicked Remove\",\n                                 Toast.LENGTH_SHORT).show()\n   }\n     return true\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u901a\u8fc7itemid\u6765\u5224\u65ad\u54ea\u4e2a\u83dc\u5355\u9879\u88ab\u9009\u62e9\u4e86\u3002\u6548\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"455\" height=\"790\" src=\"https:\/\/i0.wp.com\/fireinsect.top\/wp-content\/uploads\/2022\/10\/image.png?resize=455%2C790&#038;ssl=1\" alt=\"\" class=\"wp-image-1276\" srcset=\"https:\/\/i0.wp.com\/fireinsect.top\/wp-content\/uploads\/2022\/10\/image.png?w=455&amp;ssl=1 455w, https:\/\/i0.wp.com\/fireinsect.top\/wp-content\/uploads\/2022\/10\/image.png?resize=173%2C300&amp;ssl=1 173w\" sizes=\"(max-width: 455px) 100vw, 455px\" data-recalc-dims=\"1\" \/><\/figure>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-large-font-size\">\u66f4\u591a\u7684\u83dc\u5355<\/p>\n\n\n\n<p>\u4e0a\u9762\u7684\u83dc\u5355\u53ea\u9002\u914d\u4e8eactivity\uff0c\u5728\u53f3\u4e0a\u89d2\u663e\u793a\u83dc\u5355\uff0c\u4f46\u5b9e\u9645\u4f7f\u7528\u4e2d\u6211\u4eec\u53ef\u80fd\u4f1a\u9047\u4e0a\u957f\u6309\u67d0\u5757\u533a\u57df\u540e\uff0c\u5728\u5176\u65c1\u8fb9\u663e\u793a\u83dc\u5355\u9879\u3002\u8fd9\u91cc\u6211\u4eec\u5c31\u9700\u8981\u4f7f\u7528PopupMenu<\/p>\n\n\n\n<p>\u9996\u5148\uff0c\u9700\u8981\u5b8c\u6210\u4e0a\u8bc9\u64cd\u4f5c\uff0c\u6211\u4eec\u9700\u8981\u8bbe\u7f6e\u957f\u6309\u4e8b\u4ef6\uff08\u5e9f\u8bdd\uff09\u3002\u5728\u957f\u6309\u4e8b\u4ef6\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efaPopupMenu\u5e76\u8bbe\u7f6e\u5176inflate\u548cOnMenuItemClickListener\uff0c\u6765\u5b9e\u73b0\u6548\u679c\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin\">var popupMenu = PopupMenu(this, v)\n        popupMenu.menuInflater.inflate(R.menu.menu, popupMenu.menu)\n        popupMenu.setOnMenuItemClickListener { menuItem -&gt;\n            when (menuItem.itemId) {\n                R.id.edit -&gt; makeEdit(v)\n                R.id.delete -&gt; makeDelete(v)\n                else -&gt; true\n            }\n        }\npopupMenu.show()<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u6700\u540e\u4f7f\u7528show()\u65b9\u6cd5\u6765\u663e\u793a\u83dc\u5355\u3002\u522b\u7684\u8bbe\u7f6e\u65b9\u6cd5\u4e0e\u4e4b\u524d\u7684\u83dc\u5355\u57fa\u672c\u76f8\u540c<\/p>\n\n\n\n<div style=\"height:6px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-large-font-size\">\u9500\u6bc1\u4e00\u4e2aActivity<\/p>\n\n\n\n<p>\u4f7f\u7528finish()\u65b9\u6cd5\u53ef\u4ee5\u9500\u6bc1\u4e00\u4e2aActivity<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Activity\u4e2d\u4f7f\u7528Menu<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[1,16],"tags":[],"class_list":["post-1275","post","type-post","status-publish","format-standard","hentry","category-wcd","category-16"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1275"}],"collection":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/comments?post=1275"}],"version-history":[{"count":3,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1275\/revisions"}],"predecessor-version":[{"id":1291,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1275\/revisions\/1291"}],"wp:attachment":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/media?parent=1275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/categories?post=1275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/tags?post=1275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}