{"id":9,"date":"2021-09-16T14:58:17","date_gmt":"2021-09-16T06:58:17","guid":{"rendered":"http:\/\/blog.pbin.xin\/?p=9"},"modified":"2026-03-03T21:03:58","modified_gmt":"2026-03-03T13:03:58","slug":"%e3%80%90android%e3%80%91activity%e5%90%af%e5%8a%a8%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"http:\/\/blog.percy.homes\/index.php\/2021\/09\/16\/%e3%80%90android%e3%80%91activity%e5%90%af%e5%8a%a8%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"\u3010Android\u3011Activity\u542f\u52a8\u6a21\u5f0f"},"content":{"rendered":"<h1>\u3010\u7b14\u8bb0\u3011\u3010Android\u3011Activity\u542f\u52a8\u6a21\u5f0f<\/h1>\n<h2>\u57fa\u672c\u6982\u5ff5<\/h2>\n<h3>1. Task<\/h3>\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b\u4e00\u4e2aApp\u53ea\u6709\u4e00\u4e2a <code>Task<\/code>\uff0c\u540d\u5b57\u4e3a\u8be5App\u7684\u5305\u540d\u3002\u5728\u624b\u673a\u7684\u6700\u8fd1\u5f00\u542f\u7684App\u5217\u8868\u4e2d\uff0c\u6bcf\u4e00\u4e2a <code>Task<\/code> \u5c31\u5360\u636e\u4e00\u4e2a\u4f4d\u7f6e\u3002\u5373\u5207\u6362\u5e94\u7528\u7684\u57fa\u672c\u8c03\u5ea6\u5355\u4f4d\u4e3a <code>Task<\/code>\u3002<\/p>\n<p>\u4e00\u4e2a <code>Task<\/code> \u4e0b\u5305\u542b\u4e86\u4e00\u4e2a <code>Activity\u6808<\/code>\u3002<\/p>\n<h3>2. Activity\u6808<\/h3>\n<p>\u8868\u793a\u4e00\u7cfb\u5217\u7684 <code>Activity<\/code>\uff0c\u9075\u5faa\u5148\u8fdb\u540e\u51fa\uff0c\u540e\u8fdb\u5148\u51fa\u7684\u539f\u5219\u3002<\/p>\n<h3>3. \u56fe\u50cf\u63cf\u8ff0<\/h3>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/43.138.204.135:7507\/images\/Activity.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" style=\"zoom: 50%;\" data-original=\"http:\/\/43.138.204.135:7507\/images\/Activity.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u56fe\u7247\u63cf\u8ff0\" \/><\/div><\/p>\n<h2>\u542f\u52a8\u6a21\u5f0f<\/h2>\n<h3>AppA<\/h3>\n<p>com.bin.appa<\/p>\n<h3>AppB<\/h3>\n<p>com.bin.appb<\/p>\n<hr \/>\n<h3>\u5404\u79cdActivity\u7684\u5c5e\u6027<\/h3>\n<h4>StandardActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1astandard<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u662f<\/p>\n<p>\u6307\u5b9aTask\uff1a\u9ed8\u8ba4\u5305\u540d<\/p>\n<h4>SingleTopActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1asingleTop<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u662f<\/p>\n<p>\u6307\u5b9aTask\uff1a\u9ed8\u8ba4\u5305\u540d<\/p>\n<h4>SingleTaskActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1asingleTask<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u662f<\/p>\n<p>\u6307\u5b9aTask\uff1a\u9ed8\u8ba4\u5305\u540d<\/p>\n<h4>SingleInstanceActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1asingleInstance<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u662f<\/p>\n<p>\u6307\u5b9aTask\uff1a\u9ed8\u8ba4\u5305\u540d<\/p>\n<h4>TaskSingleInstanceActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1asingleInstance<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u5426<\/p>\n<p>\u6307\u5b9aTask\uff1abin.test.task<\/p>\n<h4>TaskSingleTaskActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1asingleTask<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u5426<\/p>\n<p>\u6307\u5b9aTask\uff1abin.test.task<\/p>\n<h4>TaskSingleTopActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1asingleTop<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u5426<\/p>\n<p>\u6307\u5b9aTask\uff1abin.test.task<\/p>\n<h4>TaskStandardActivity<\/h4>\n<p>\u542f\u52a8\u6a21\u5f0f\uff1astandard<\/p>\n<p>\u662f\u5426\u53ef\u8de8\u8fdb\u7a0b\u6253\u5f00\uff1a\u5426<\/p>\n<p>\u6307\u5b9aTask\uff1abin.test.task<\/p>\n<h3>1. Standard<\/h3>\n<p>\u9ed8\u8ba4\u7684\u542f\u52a8\u65b9\u5f0f\uff0c\u6bcf\u6b21\u542f\u52a8\u8be5\u6a21\u5f0f\u7684Activity\u65f6\uff0c\u90fd\u4f1a\u65b0\u5efa\u4e00\u4e2a\u5b9e\u4f8b\u5e76\u52a0\u5165\u5230\u5f53\u524dTask\u7684Activity\u6808\u9876\u3002\u5982\u679c\u662f\u5728\u542f\u52a8\u6a21\u5f0f\u4e3a <code>singleInstance<\/code> \u7684Activity\u4e2d\u542f\u52a8\uff0c\u90a3\u4e48\u5206\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n<ol>\n<li>\u5f53\u524dApp\u5185\u5b58\u5728\u6307\u5b9a\u7684Task\uff0c\u5219\u76f4\u63a5\u5c06\u8be5Activity\u653e\u5230Task\u3002<\/li>\n<li>\u5f53\u524dApp\u5185\u4e0d\u5b58\u5728\u6307\u5b9a\u7684Task\uff0c\u5219\u65b0\u5efa\u4e00\u4e2aTask\u518d\u653e\u5165\u3002<\/li>\n<\/ol>\n<p>\u5c31\u7c7b\u4f3c\u4e8e\u8bbe\u7f6e\u4e86 <code>FLAG_ACTIVITY_NEW_TASK<\/code>\u3002<\/p>\n<h4>\u4f7f\u7528\u573a\u666f<\/h4>\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b\u90fd\u4f7f\u7528\u8be5\u6a21\u5f0f\u542f\u52a8\u6d3b\u52a8\u3002<\/p>\n<h4>adb\u547d\u4ee4\u89c2\u5bdf<\/h4>\n<p>\u52a8\u4f5c\uff1a\u6253\u5f00AppA\uff0c\u6253\u5f00AppB\u3002<strong>AppA<\/strong> \u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u6253\u5f00 <strong>AppB<\/strong> \u7684 <code>StandardActivity<\/code>\u3002<\/p>\n<p>\u9884\u8ba1\u7ed3\u679c\u4e3a\uff1aAppA\u4e2d\u53ea\u6709\u4e00\u4e2aTask\uff0cTask\u4e2d\u7684Activity\u6808\u9876\u7684Activity\u4e3a <strong>AppB<\/strong> \u7684 <code>StandardActivity<\/code>\u3002AppB\u4e2d\u53ea\u6709\u4e00\u4e2aTask\uff0cTask\u4e2d\u7684Activity\u6808\u53ea\u6709\u4e00\u4e2a <code>MainActivity<\/code>\u3002<\/p>\n<p>\u4f7f\u7528<sup id=\"fnref--adb\u547d\u4ee4\" class=\"footnote-ref\"><a href=\"#fn--adb\u547d\u4ee4\">1<\/a><\/sup>\u89c2\u5bdf\uff1a<\/p>\n<pre><code class=\"java\">Running activities (most recent first):\n      TaskRecord{4971b86 #169 A=com.bin.appa U=0 sz=4}\/\/APP A\n        Run #10: ActivityRecord{285089f3 u0 com.bin.appb\/.StandardActivity t169}\/\/\u5305\u540d\u4e3aAPP B\n        Run #9: ActivityRecord{1fe06e75 u0 com.bin.appa\/.StandardActivity t169}\n        Run #8: ActivityRecord{a50fe67 u0 com.bin.appa\/.StandardActivity t169}\n        Run #7: ActivityRecord{3080b171 u0 com.bin.appa\/.MainActivity t169}\n      TaskRecord{14396a12 #171 A=com.bin.appb U=0 sz=1}\/\/APP B\n        Run #6: ActivityRecord{2d90525 u0 com.bin.appb\/.MainActivity t171}\n<\/code><\/pre>\n<h3>2. SingleTop<\/h3>\n<p>Activity\u6808\u9876\u6a21\u5f0f\uff0c\u542f\u52a8\u8be5\u6a21\u5f0fActivity\u65f6\uff0c\u4f1a\u5148\u68c0\u6d4b<strong>\u5f53\u524dTask<\/strong> \u4e2d\u7684Activity\u6808\u7684\u6808\u9876\u662f\u5426\u4e3a\u8be5\u6d3b\u52a8\u3002\u5982\u679c\u662f\uff0c\u5219\u590d\u7528\u8be5\u6d3b\u52a8\uff0c\u4f1a\u56de\u8c03 <code>onNewIntent()<\/code> \u8fd9\u4e2a\u751f\u547d\u5468\u671f\uff1b\u5982\u679c\u4e0d\u662f\uff0c\u5219\u65b0\u5efa\u4e00\u4e2a\u8be5Activity\u653e\u5165\u5f53\u524dTask\u7684Activity\u6808\u9876\u3002<\/p>\n<h4>\u4f7f\u7528\u573a\u666f<\/h4>\n<p>\u9700\u8981\u5148\u767b\u5f55\u624d\u80fd\u4f7f\u7528\u7684App\uff0c\u5e76\u4e14\u4e0d\u5141\u8bb8\u8d26\u53f7\u540c\u65f6\u5728\u7ebf\u3002\u6b64\u65f6\u53ef\u4ee5\u5c06\u767b\u5f55\u6d3b\u52a8\u7684\u542f\u52a8\u6a21\u5f0f\u8bbe\u7f6e\u4e3a <code>singleTop<\/code>\u3002\u8fd9\u6837\u5f53\u8d26\u53f7\u5728\u5176\u4ed6\u8bbe\u5907\u767b\u5f55\u65f6\uff0c\u76f4\u63a5\u542f\u52a8\u767b\u5f55\u6d3b\u52a8\u5373\u53ef\u3002\u65e0\u9700\u62c5\u5fc3\u7528\u6237\u4f7f\u7528\u201c\u56de\u9000\u952e\u201d\u8df3\u8fc7\u767b\u5f55\u3002<\/p>\n<h4>adb\u547d\u4ee4\u89c2\u5bdf<\/h4>\n<ol>\n<li>\u52a8\u4f5c\uff1a\u6253\u5f00AppA\u3002\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleTopActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleTopActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleTopActivity<\/code>\u3002<\/li>\n<\/ol>\n<p>\u9884\u8ba1\u7ed3\u679c\uff1aAppA\u4e2d\u53ea\u6709\u4e00\u4e2aTask\uff0cTask\u4e2d\u7684Activity\u6808\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>|SingleTopActivity|<\/p>\n<p>|StandardActivity |<\/p>\n<p>|SingleTopActivity|<\/p>\n<p>|StandardActivity |<\/p>\n<p>| MainActivity |<\/p><\/blockquote>\n<p>\u4f7f\u7528<sup id=\"fnref--adb\u547d\u4ee4\" class=\"footnote-ref\"><a href=\"#fn--adb\u547d\u4ee4\">2<\/a><\/sup>\u89c2\u5bdf\uff1a<\/p>\n<pre><code class=\"java\">Running activities (most recent first):\n      TaskRecord{13b3903 #172 A=com.bin.appa U=0 sz=5}\n        Run #10: ActivityRecord{4b96105 u0 com.bin.appa\/.SingleTopActivity t172}\n        Run #9: ActivityRecord{38b93877 u0 com.bin.appa\/.StandardActivity t172}\n        Run #8: ActivityRecord{a1de7d9 u0 com.bin.appa\/.SingleTopActivity t172}\n        Run #7: ActivityRecord{3fe333ab u0 com.bin.appa\/.StandardActivity t172}\n        Run #6: ActivityRecord{759b942 u0 com.bin.appa\/.MainActivity t172}\n<\/code><\/pre>\n<ol>\n<li>\u52a8\u4f5c\uff1a\u6253\u5f00AppA\u3002\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleTopActivity<\/code>\u2192\u4f7f\u7528 <code>FLAG_ACTIVITY_NEW_TASK<\/code> \u521b\u5efa\u4e00\u4e2a <code>TaskStandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleTopActivity<\/code><\/li>\n<\/ol>\n<p>\u9884\u8ba1\u7ed3\u679c\uff1aAppA\u4e2d\u6709\u4e24\u4e2aTask\uff0c\u5206\u522b\u4e3a\u9ed8\u8ba4\u540d\u79f0\u4e3a\u5305\u540d\u7684Task\u548c\u81ea\u5b9a\u4e49\u7684Task\u3002<\/p>\n<p>\u5305\u540dTask\u4e2d\u7684Activity\u6808\u5185\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>|SingleTopActivity|<\/p>\n<p>|StandardActivity |<\/p>\n<p>| MainActivity |<\/p><\/blockquote>\n<p>\u81ea\u5b9a\u4e49Task\u4e2d\u7684Activity\u6808\u5185\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>| SingleTopActivity |<\/p>\n<p>|TaskStandardActivity|<\/p><\/blockquote>\n<pre><code class=\"java\"> Running activities (most recent first):\n      TaskRecord{32dad336 #180 A=bin.test.task U=0 sz=2}\/\/\u81ea\u5b9a\u4e49task\n        Run #10: ActivityRecord{213784e0 u0 com.bin.appa\/.SingleTopActivity t180}\n        Run #9: ActivityRecord{2e381c57 u0 com.bin.appa\/.TaskStandardActivity t180}\n      TaskRecord{26d733a4 #179 A=com.bin.appa U=0 sz=3}\/\/APP A\u9ed8\u8ba4task\n        Run #8: ActivityRecord{12fdb4b9 u0 com.bin.appa\/.SingleTopActivity t179}\n        Run #7: ActivityRecord{241a618b u0 com.bin.appa\/.StandardActivity t179}\n        Run #6: ActivityRecord{113c59c6 u0 com.bin.appa\/.MainActivity t179}\n<\/code><\/pre>\n<h3>3. SingleTask<\/h3>\n<p>\u6bcf\u6b21\u542f\u52a8\u8be5\u6a21\u5f0f\u7684Activity\u65f6\uff0c\u4f1a\u5148\u5bfb\u627e\u662f\u5426\u6709\u8be5Activity\u6307\u5b9a\u7684Task\uff0c\u9ed8\u8ba4Task\u4e3a\u5305\u540d\uff0c\u53ef\u901a\u8fc7 <code>taskAffiny<\/code> \u6307\u5b9a\u540d\u79f0\u3002\u5982\u679c\u4e0d\u5b58\u5728\u6307\u5b9a\u7684Task\uff0c\u5219\u65b0\u5efa\u4e00\u4e2aTask\u5e76\u5c06\u8be5Activity\u653e\u5165\u3002\u5982\u679c\u5b58\u5728\u6307\u5b9a\u7684Task\uff0c\u5219\u68c0\u67e5\u5176\u4e2d\u662f\u5426\u6709\u8be5Activity\u3002\u5982\u679c\u6709\uff0c\u5219<strong>\u79fb\u9664\u5b83\u4e0a\u9762\u7684\u6240\u6709Activity<\/strong>\uff1b\u5982\u679c\u6ca1\u6709\uff0c\u5219\u5c06\u8be5Activity\u653e\u5165\u6808\u9876\u3002<\/p>\n<p>\u8be5\u542f\u52a8\u6a21\u5f0f\u7684Activity\u6240\u5904\u7684Activity\u6808\u5185\uff0c\u53ea\u5b58\u5728\u4e00\u4e2a\u8be5Activity\u3002<\/p>\n<h4>\u4f7f\u7528\u573a\u666f<\/h4>\n<p>\u5982\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\uff0c\u9700\u8981\u5728\u6700\u8fd1\u4efb\u52a1\u5217\u8868\u4e2d\u663e\u793a\u5c0f\u7a0b\u5e8f\u548c\u5fae\u4fe1\u4e24\u4e2a\u5361\u7247\u3002\u5e76\u4e14\u5c0f\u7a0b\u5e8f\u4e2d\u6709\u81ea\u5df1\u7684\u4e00\u5957Activity\u6808\u3002<\/p>\n<p>\u8fd9\u4e2a\u53ea\u662f\u6211\u7684\u5047\u8bbe\uff0c\u4e0d\u4e00\u5b9a\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5c31\u662f\u8fd9\u4e48\u5b9e\u73b0\u7684\u3002<\/p>\n<h4>adb\u547d\u4ee4\u89c2\u5bdf<\/h4>\n<ol>\n<li>\u52a8\u4f5c\uff1a\u6253\u5f00AppA\u3002\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u901a\u8fc7 <code>FLAG_ACTIVITY_NEW_TASK<\/code> \u521b\u5efa\u4e00\u4e2a <code>TaskStandardActivityt<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>TaskSingleTaskActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u901a\u8fc7\u6700\u8fd1\u4efb\u52a1\u5217\u8868\u8fd4\u56de\u7b2c\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>TaskSingleTaskActivity<\/code><\/li>\n<\/ol>\n<p>\u9884\u8ba1\u7ed3\u679c\uff1aAppA\u67092\u4e2aTask\uff0c\u4e00\u4e2a\u540d\u79f0\u4e3a\u5305\u540d\uff0c\u4e00\u4e2a\u7684\u540d\u79f0\u4e3a <code>bin.test.task<\/code>\u3002<\/p>\n<p>\u5305\u540dTask\u4e2d\u7684Activity\u6808\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>| StandardActivity |<\/p>\n<p>| MainActivity |<\/p><\/blockquote>\n<p>\u81ea\u5b9a\u4e49Task\u4e2d\u7684Activity\u6808\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>|TaskSingleTaskActivity|<\/p>\n<p>| TaskStandardActivity |<\/p><\/blockquote>\n<pre><code class=\"java\">  Running activities (most recent first):\n      TaskRecord{1314e94e #190 A=bin.test.task U=0 sz=2}\n        Run #9: ActivityRecord{1e82e908 u0 com.bin.appa\/.TaskSingleTaskActivity t190}\n        Run #8: ActivityRecord{31e6273e u0 com.bin.appa\/.TaskStandardActivity t190}\n      TaskRecord{3b24b37c #189 A=com.bin.appa U=0 sz=2}\n        Run #7: ActivityRecord{3166f6a8 u0 com.bin.appa\/.StandardActivity t189}\n        Run #6: ActivityRecord{17c5806 u0 com.bin.appa\/.MainActivity t189}\n<\/code><\/pre>\n<h3>4. SingleInstance<\/h3>\n<p>\u542f\u52a8\u8be5\u6a21\u5f0f\u7684Activity\u65f6\uff0c\u68c0\u6d4b\u6240\u6709Task\u5185\u662f\u5426\u5b58\u5728\u8be5Activity\u3002\u5982\u679c\u6709\uff0c\u5219\u56de\u8c03 <code>onNewIntent()<\/code>\uff0c\u5e76\u5c06\u8be5Task\u79fb\u52a8\u5230\u524d\u53f0\uff1b\u5982\u679c\u6ca1\u6709\uff0c\u5219\u65b0\u5efa\u4e00\u4e2aTask\u5e76\u5c06\u8be5Activity\u653e\u5165\u6808\u4e2d\u3002<\/p>\n<p>\u8be5\u6a21\u5f0f\u7684Activity\u72ec\u4eab\u4e00\u4e2aTask\u3002<\/p>\n<h4>\u4f7f\u7528\u573a\u666f<\/h4>\n<p>\u5982\u5730\u56fe\u7c7b\u5e94\u7528\uff0c\u9700\u8981\u63d0\u4f9b\u7ed9\u7b2c\u4e09\u65b9App\u8c03\u8d77\u5730\u56fe\u3002<\/p>\n<h4>adb\u547d\u4ee4\u89c2\u5bdf<\/h4>\n<p>\u52a8\u4f5c\uff1a\u6253\u5f00AppA\u3002\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleInstanceActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>StandardActivity<\/code>\u2192\u521b\u5efa\u4e00\u4e2a <code>SingleInstanceActivity<\/code>\u3002<\/p>\n<p>\u9884\u8ba1\u7ed3\u679c\uff1aAppA\u4e2d\u5b58\u5728\u4e24\u4e2aTask\uff0c\u4e24\u4e2aTask\u7684\u540d\u79f0\u4e00\u81f4\u3002<\/p>\n<p>\u7b2c\u4e00\u4e2aTask\u4e2d\u7684Activity\u6808\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>|SingleInstanceActivity|<\/p><\/blockquote>\n<p>\u7b2c\u4e8c\u4e2aTask\u4e2d\u7684Activity\u6808\u7531\u4e0a\u5230\u4e0b\u4e3a\uff1a<\/p>\n<blockquote><p>|StandardActivity|<\/p>\n<p>|StandardActivity|<\/p>\n<p>| MainActivity |<\/p><\/blockquote>\n<pre><code class=\"java\"> Running activities (most recent first):\n      TaskRecord{2754349 #193 A=com.bin.appa U=0 sz=1}\n        Run #9: ActivityRecord{39dd2b16 u0 com.bin.appa\/.SingleInstanceActivity t193}\n      TaskRecord{6a0996f #191 A=com.bin.appa U=0 sz=3}\n        Run #8: ActivityRecord{39b42723 u0 com.bin.appa\/.StandardActivity t191}\n        Run #7: ActivityRecord{50225c0 u0 com.bin.appa\/.StandardActivity t191}\n        Run #6: ActivityRecord{14dedf63 u0 com.bin.appa\/.MainActivity t191}\n<\/code><\/pre>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u56db\u4e2a\u542f\u52a8\u6a21\u5f0f\u53ef\u4ee5\u5206\u6210\u4e24\u7c7b\uff0c\u7b2c\u4e00\u7c7b\u662f <code>standard<\/code> \u548c <code>singleTop<\/code>\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u5b58\u5728\u591a\u4e2a\u5b9e\u4f8b\uff1b\u7b2c\u4e8c\u7c7b\u662f <code>singleTask<\/code> \u548c <code>singleInstance<\/code>\uff0c\u5b83\u4eec\u53ea\u4f1a\u5b58\u5728\u4e00\u4e2a\u5b9e\u4f8b\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"center\">\u591a\u5b9e\u4f8b<\/th>\n<th align=\"center\">\u5355\u5b9e\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"center\">stadard<\/td>\n<td align=\"center\">singleTask<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">singleTop<\/td>\n<td align=\"center\">singleInstance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e3a\u4ec0\u4e48\u6709\u4e86Activity\u6808\u540e\u8fd8\u8981\u6709Task\u5b58\u5728<\/h2>\n<p>\u4e3b\u8981\u662f\u4e3a\u4e86\u65b9\u4fbf\u591a\u4e2aApp\u4e4b\u95f4\u4e92\u76f8\u8c03\u7528\u65f6\uff0c\u6709\u65e0\u7f1d\u7684\u4f53\u9a8c\u611f\u3002\u6bd4\u5982\u5728\u5199\u65e5\u8bb0\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u8c03\u8d77\u7cfb\u7edf\u76f8\u673a\u8fdb\u884c\u62cd\u7167\uff0c\u62cd\u5b8c\u4e4b\u540e\u8fd8\u80fd\u8fdb\u5165\u76f8\u518c\u9009\u7167\u7247\u3002\u8fd9\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c\uff0c\u90fd\u5982\u540c\u5728\u4e00\u4e2a\u65e5\u8bb0App\u5185\u5b8c\u6210\u7684\u4e00\u6837\u3002\u8fd9\u5c31\u662fTask\u5b58\u5728\u7684\u76ee\u7684\u3002<\/p>\n<div class=\"footnotes\">\n<hr \/>\n<ol>\n<li id=\"fn--adb\u547d\u4ee4\">adb shell dumpsys activity activities\u00a0<a class=\"footnoteBackLink\" title=\"Jump back to footnote 1 in the text.\" href=\"#fnref--adb\u547d\u4ee4\">\u21a9<\/a><\/li>\n<li id=\"fn--adb\u547d\u4ee4\">adb shell dumpsys activity activities\u00a0<a class=\"footnoteBackLink\" title=\"Jump back to footnote 2 in the text.\" href=\"#fnref--adb\u547d\u4ee4\">\u21a9<\/a><\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u7b14\u8bb0\u3011\u3010Android\u3011Activity\u542f\u52a8\u6a21\u5f0f \u57fa\u672c\u6982\u5ff5 1. Task \u4e00\u822c\u60c5\u51b5\u4e0b\u4e00\u4e2aApp\u53ea\u6709\u4e00\u4e2a T [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/posts\/9"}],"collection":[{"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/comments?post=9"}],"version-history":[{"count":1,"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/posts\/9\/revisions"}],"predecessor-version":[{"id":98,"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/posts\/9\/revisions\/98"}],"wp:attachment":[{"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/media?parent=9"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/categories?post=9"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.percy.homes\/index.php\/wp-json\/wp\/v2\/tags?post=9"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}