{"id":920,"date":"2015-06-06T12:51:36","date_gmt":"2015-06-06T04:51:36","guid":{"rendered":"https:\/\/www.ray650128.com\/wordpress\/?p=920"},"modified":"2021-05-19T17:25:49","modified_gmt":"2021-05-19T09:25:49","slug":"android%e5%9b%9b%e5%a4%a7%e5%85%83%e4%bb%b6%e4%b9%8bactivity","status":"publish","type":"post","link":"https:\/\/blog.ray650128.com\/?p=920","title":{"rendered":"[Android]\u56db\u5927\u5143\u4ef6\u4e4bActivity"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5148\u524d\u5728<a href=\"https:\/\/www.ray650128.com\/wordpress\/?p=882\">[Android]\u56db\u5927\u5143\u4ef6\u7c21\u4ecb<\/a>\u4e2d\u6709\u7c21\u55ae\u4ecb\u7d39\u904e\uff0cActivity\u5728\u61c9\u7528\u7a0b\u5f0f\u4e2d\u662f\u8ca0\u8cac\u8207\u4f7f\u7528\u8005\u4ea4\u4e92\u7684\u90e8\u5206\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u500bActivity\u4ee3\u8868\u4e86\u61c9\u7528\u7a0b\u5f0f\u4e2d\u7684\u4e00\u500b\u9801\u9762\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u95dc\u65bcActivity<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Android\u958b\u767c\u5718\u968a\u70ba\u4e86\u65b9\u4fbf\u958b\u767c\u8005\u80fd\u5920\u5feb\u901f\u958b\u767c\u756b\u9762\uff0c\u56e0\u6b64\u5728Activity\u4e2d\u8a2d\u8a08\u4e86\u8a31\u591a\u751f\u547d\u9031\u671f\uff0c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Activity\u5f9e\u751f\u6210\u3001\u6d3b\u52d5\u4e2d\u3001\u505c\u6b62\u6d3b\u52d5\u5230\u92b7\u6bc0\uff0c\u90fd\u6709\u5c0d\u61c9\u7684\u751f\u547d\u9031\u671f\u4f86\u505a\u76f8\u5c0d\u61c9\u7684\u4e8b\u4ef6\u8655\u7406\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u7c21\u55ae\u4ecb\u7d39\u524d\uff0c\u9019\u88e1\u4e0d\u514d\u4fd7\u7684\u5148\u653e\u4e00\u5f35Activity\u7684\u751f\u547d\u9031\u671f\u6d41\u7a0b\u5716\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/encorex32268.gitbooks.io\/developnote\/content\/assets\/activity_lifecycle.png\" alt=\"\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u751f\u547d\u9031\u671f\u7c21\u4ecb<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">onCreate() &amp; onDestroy()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>onCreate()<\/strong>\u662fActivity\u525b\u555f\u52d5\u6642\u7684\u7b2c\u4e00\u500bcallback\uff0c\u901a\u5e38\u6211\u5011\u6703\u5728\u9019\u88e1\u9032\u884c\u4e00\u4e9b\u521d\u59cb\u5316\u7684\u52d5\u4f5c\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>setContentView(R.layout.activity_main);<\/code>\u6216\u662f<br><code>TextView text1 = (TextView) findViewById(R.id.textView1);<\/code>\u7b49\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>onDestroy()<\/strong>\u5247\u662f\u7576Activity\u88ab\u7d50\u675f\u6389\u6642\uff0c\u6703\u88ab\u547c\u53eb\u7684callback\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a3b\uff1aonCreate()\u548conDestroy()\u9019\u5169\u500b\u65b9\u6cd5\u53ea\u6703\u5728Activity\u88ab\u5efa\u7acb\u6216\u662f\u88ab\u92b7\u6bc0\u6642\u624d\u6703\u547c\u53eb\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">onStart() &amp; onStop()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576onCreate()\u5df2\u7d93\u57f7\u884c\u5b8c\u7562\uff0c\u4e14\u4f7f\u7528\u8005\u5df2\u7d93\u770b\u5230\u756b\u9762\u6642\uff0c\u6703\u547c\u53ebonStart()\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u4f7f\u7528\u8005\u555f\u52d5\u5176\u4ed6Activity\u6642\uff0c\u539f\u672c\u7684Activity\u5247\u6703\u547c\u53ebonStop()\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">onPause() &amp; onResume()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576Activity\u7684\u756b\u9762\u6709\u90e8\u5206\u88ab\u906e\u4f4f\u6642\uff0c\u4f8b\u5982\u6709\u4e00\u500bDialog\u5143\u4ef6\u84cb\u5728\u4e0a\u65b9\u6642\uff0c\u6703\u547c\u53ebonPause()\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576Dialog\u95dc\u9589\uff0c\u4e26\u56de\u5230\u9019\u500bActivity\u6642\uff0c\u5247\u6703\u547c\u53ebonResume()\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Activity\u7684\u555f\u52d5\u6a21\u5f0f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7c21\u4ecb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u61c9\u7528\u7a0b\u5f0f\u5728\u57f7\u884c\u6642\uff0cActivity\u6703\u4ee5\u5806\u758a\u7684\u5f62\u5f0f\u653e\u5165Task\u4e2d\uff0c\u901a\u5e38\u4e00\u500b\u61c9\u7528\u7a0b\u5f0f\u53ea\u6703\u6709\u4e00\u500bTask\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u800c\u61c9\u7528\u7a0b\u5f0f\u88e1\u7684Activities\u5247\u6703\u900f\u904e\u555f\u52d5\u6a21\u5f0f\u4f86\u5f71\u97ffActivity\u5728Task\u7684\u5806\u758a\u4e2d\u9032\u51fa\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5177\u9ad4\u800c\u8a00\uff0cActivity\u5177\u6709\u56db\u7a2e\u555f\u52d5\u6a21\u5f0f\uff0c\u5206\u5225\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>standard \u4e00\u822c\u9810\u8a2d\u7684\u555f\u52d5\u6a21\u5f0f\u3002\u6bcf\u6b21\u555f\u52d5Activity\u6642\u90fd\u6703\u65b0\u5efa\u4e00\u500b\u5be6\u4f8b\u3002<\/li><li>singleTop \u5982\u679cActivity\u5728Task\u7684\u5806\u758a\u4e2d\u5df2\u7d93\u88ab\u555f\u52d5\uff0c\u90a3\u9ebc\u5c31\u76f4\u63a5\u547c\u53eb\u9019\u500bActivity\uff0c\u53cd\u4e4b\u5247\u65b0\u5efa\u4e00\u500b\u5be6\u4f8b\uff0c\u4e26\u628a\u9019\u500bActivity\u653e\u5230Task\u5806\u758a\u7684\u6700\u4e0a\u5c64\u3002<\/li><li>singleTask \u5982\u679c\u8981\u555f\u52d5\u7684Activity\u5df2\u7d93\u5b58\u5728\u65bc\u67d0\u500bTask\u4e2d\uff0c\u5247\u6703\u900f\u904eonNewIntent()\u65b9\u6cd5\u76f4\u63a5\u555f\u52d5\u8a72Activity\u3002\u800c\u4e14\u6703\u7d50\u675f\u6389\u8a72Activity\u4e0a\u5c64\u6240\u6709\u7684Activity\uff0c\u4f7f\u76ee\u524d\u547c\u53eb\u7684Activity\u8655\u65bc\u6700\u4e0a\u5c64\u3002<\/li><li>singleInstance \u555f\u52d5Activity\u6642\uff0c\u6703\u5efa\u7acb\u65b0\u7684Task\u3002\u4e26\u4e14\u8a72Task\u4e2d\u53ea\u6703\u57f7\u884c\u8a72Activity\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fee\u6539\u555f\u52d5\u6a21\u5f0f\u7684\u65b9\u5f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728android_manifest.xml\u4e2d\uff0c\u5c0dactivity\u6a19\u7c64\u4e2d\u52a0\u5165android:launchMode\u53c3\u6578\u5373\u53ef\uff0c\u4f8b\u5982\uff1a<code class=\"hljs xml\"><\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"xml\" class=\"language-xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">activity<\/span> <\/span>\n\u00a0   <span class=\"hljs-tag\"><span class=\"hljs-attr\">android:name<\/span>=<span class=\"hljs-string\">\".MainActivity\"<\/span><\/span>\n\u00a0\u00a0\u00a0<span class=\"hljs-tag\"> <span class=\"hljs-attr\">android:launchMode<\/span>=<span class=\"hljs-string\">\"singleTask\"<\/span> \/><\/span><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2019\u88dc\u5145\uff1a\u8a73\u7d30\u4ecb\u7d39\u53ef\u4ee5\u53c3\u8003IT\u5e6b\u5e6b\u5fd9\u7684<a href=\"https:\/\/ithelp.ithome.com.tw\/articles\/10205730?sc=iThelpR\">Android &#8211; Activity \u555f\u52d5\u6a21\u5f0f<\/a>\u4e00\u6587<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u524d\u5728[Android]\u56db\u5927\u5143\u4ef6\u7c21\u4ecb\u4e2d\u6709\u7c21\u55ae\u4ecb\u7d39\u904e\uff0cActivity\u5728\u61c9\u7528\u7a0b\u5f0f\u4e2d\u662f\u8ca0\u8cac\u8207\u4f7f\u7528\u8005\u4ea4\u4e92\u7684\u90e8\u5206\u3002 \u4e00 &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-920","post","type-post","status-publish","format-standard","hentry","category-2"],"_links":{"self":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=920"}],"version-history":[{"count":4,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/920\/revisions"}],"predecessor-version":[{"id":965,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/920\/revisions\/965"}],"wp:attachment":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}