{"id":255425,"date":"2016-03-14T17:23:48","date_gmt":"2016-03-14T09:23:48","guid":{"rendered":"http:\/\/blog.zhenglei.net\/?p=255425"},"modified":"2016-03-14T17:23:48","modified_gmt":"2016-03-14T09:23:48","slug":"android-activity-launch-mode","status":"publish","type":"post","link":"https:\/\/blog.zhenglei.net\/?p=255425","title":{"rendered":"Android Activity Launch Mode"},"content":{"rendered":"<h1>Activity\u7684launchMode\uff1asingleTop\uff0csingleTask\u4e0esingleInstance<\/h1>\n<p>&nbsp;<\/p>\n<div>\n<p>\u76f8\u5173\u5185\u5bb9\uff0c\u53ef\u4ee5\u53c2\u89c1\u5b98\u65b9\u7f51\u5740\uff1a<a href=\"http:\/\/developer.android.com\/guide\/components\/tasks-and-back-stack.html\" target=\"_blank\">http:\/\/developer.android.com\/guide\/components\/tasks-and-back-stack.html<\/a><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.blog.csdn.net\/20131218122627640\" alt=\"\" \/><\/p>\n<p>\u5982\u56fe\u6240\u793a\uff0c\u5982\u679cABC\u4e09\u4e2aActivity\u7684launchMode\u90fd\u662f<strong>standard<\/strong>\uff0c\u90a3\u4e48\u6309\u7167\u56fe\u793a\u987a\u5e8f\u8c03\u7528\u540e\uff0c\u5806\u6808\u4e3aABCBB\uff1b<br \/>\n\u800c\u5982\u679c\u754c\u9762ActivityB\u7684launchMode\u4e3a<strong>singleTop<\/strong>\uff0c\u540c\u6837\u7684\u8c03\u7528\u5173\u7cfb\u4e0b\uff0c\u5806\u6808\u4e3aABCB\uff0c\u6808\u9876\u7684B\uff0c\u88ab\u590d\u7528\u4e86\u3002<\/p>\n<p>singleTop\u6a21\u5f0f\uff0c\u9002\u5408\u4e8e\u4e0e\u7528\u6237\u4ea4\u4e92\u65f6\u4fdd\u6301\u4fe1\u5fc3\u66f4\u65b0\u7684\u754c\u9762Activity\uff0c\u6bd4\u5982\u8054\u7cfb\u4eba\u7684\u641c\u7d22\u754c\u9762\u754c\u9762\u7b49\uff1b<\/p>\n<p>singleTop\u4ec5\u4f5c\u4e3a\u6808\u9876Activity\u65f6\u624d\u53ef\u80fd\u88ab\u590d\u7528\uff0c\u540c\u4e00\u4e2aActivity\u5728\u7cfb\u7edf\u4e2d\uff0c\u8fd8\u662f\u4f1a\u5b58\u5728\u591a\u4e2a\u7684\u73b0\u8c61\u3002<br \/>\n\u800c<strong>singleTask<\/strong>\u548c<strong>singleInstance<\/strong>\uff0c\u5728\u6574\u4e2a\u7cfb\u7edf\u4e2d\uff0c\u4ec5\u4f1a\u6709\u4e00\u4e2a\u5bf9\u8c61\u5b58\u5728\uff0c\u4ee5\u8282\u7701\u5185\u5b58\u5f00\u9500\u3002<br \/>\n\u5982\u679c\u8fd0\u884c\u6a21\u5f0f\u4e0d\u662f\u9ed8\u8ba4\u7684standard\u6a21\u5f0f\uff0c\u90a3\u4e48\uff0c\u8be5Activity\u9700\u8981\u91cd\u8f7donNewIntent\u7684\u51fd\u6570\u3002<br \/>\nstandard\u548csingleTop\uff0c\u5bf9\u5b83\u7684\u8c03\u7528\uff0c\u4e0d\u4f1a\u5f15\u8d77\u4efb\u52a1\u5207\u6362\uff1b\u800csingleTask\u548csingleInstance\uff0c\u5219\u76f8\u53cd\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u800csingleTask\u548csingleInstance\uff0c\u5176Activity\u7684\u5bf9\u8c61\uff0c\u4ec5\u53ef\u4f5c\u4e3a\u4efb\u52a1\u7684\u6839Activity\u800c\u5b58\u5728\uff0c<br \/>\n\u800cstandard\u548csingleTop,\u5176Activity\u7684\u5bf9\u8c61\uff0c\u5219\u53ef\u80fd\u5b58\u5728Activity\u5806\u6808\u7684\u4efb\u4f55\u4f4d\u7f6e\u3002<\/p>\n<p>\u5982\u56fe\u6240\u793a\uff0c\u5f53B\u7684\u8fd0\u884c\u6a21\u5f0f\u4e3asingleTask\u548csingleInstance\u65f6\uff0c\u6240\u6709\u5bf9B\u7684\u8c03\u7528\uff0c<br \/>\n\u90fd\u4f1a\u8df3\u8f6c\u5230\u4ee5B\u4e3a\u6839\u7684\u4efb\u52a1\u4e2d\u8fdb\u884c\uff0c\u800c\u4e0e\u8c03\u7528Activity\u6240\u5728\u7684\u4efb\u52a1\uff0c\u6beb\u65e0\u5173\u8054\u3002<\/p>\n<p>singleTask\u548csingleInstance\u552f\u4e00\u7684\u533a\u522b\u662f\uff1a<br \/>\nsingleInstance\uff0c\u5176\u6240\u5728\u7684\u4efb\u52a1\u4e2d\uff0c\u5305\u542b\u4e14\u53ea\u5305\u542b\u4e00\u4e2a\u8be5Activity\u7684\u5bf9\u8c61\uff0c\u4e0d\u4f1a\u518d\u6709\u5176\u4ed6\u7684Activity\u5bf9\u8c61\uff1b<br \/>\n\u800csingleTask\uff0c\u5176\u4efb\u52a1\u4e2d\uff0c\u5219\u53ef\u80fd\u5305\u542b\u591a\u4e2a\u5176\u4ed6\u76f8\u5173\u7684Activity\u5bf9\u8c61\u3002<\/p>\n<p>singleTask\u548csingleInstance\u9002\u7528\u4e8e\u6d88\u8017\u5185\u5b58\u8f83\u591a\u7684\u5355\u5b9e\u4f8b\u754c\u9762\uff0c\u6bd4\u5982\u6d4f\u89c8\u5668\u548c\u97f3\u4e50\u64ad\u653e\u5668\u7b49\u3002<\/p>\n<p>\u6458\u81ea\u300aAndroid\u5f00\u53d1\u7cbe\u8981\u300b<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Activity\u7684launchMode\uff1asingleTop\uff0csingleTask &hellip; 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