{"id":806,"date":"2015-06-24T11:38:26","date_gmt":"2015-06-24T03:38:26","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=806"},"modified":"2026-08-18T12:58:42","modified_gmt":"2026-08-18T04:58:42","slug":"activity%e7%9a%84%e5%9b%9b%e7%a7%8dlaunchmode","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=806","title":{"rendered":"Activity\u7684\u56db\u79cdlaunchMode"},"content":{"rendered":"<section id=\"wenyan\" style=\"font-family: system-ui, 'Apple Color Emoji', 'Segoe UI', 'Segoe UI Symbol', 'Noto Sans', Roboto, sans-serif; line-height: 1.75; font-size: 16px; color: #000000; caret-color: #000000;\" data-provider=\"WenYan\">\n<blockquote style=\"margin: 20px 0px; display: block; font-size: 0.9em; overflow: auto; border-left: 3px solid #ef7060; color: #6a737d; padding: 10px 10px 10px 20px; background: #fff9f9;\">\n<p style=\"margin: 1em 0px;\">\u4eca\u5929\u8981\u8bb2\u7684\u662f Activity \u7684\u56db\u79cd launchMode\u3002launchMode \u5728\u591a\u4e2a Activity \u8df3\u8f6c\u8fc7\u7a0b\u4e2d\u5f88\u91cd\u8981\uff1a\u662f\u5426\u751f\u6210\u65b0\u5b9e\u4f8b\u3001\u662f\u5426\u91cd\u7528\u5df2\u5b58\u5728\u5b9e\u4f8b\u3001\u662f\u5426\u548c\u5176\u4ed6\u5b9e\u4f8b\u5171\u7528\u4e00\u4e2a task\u3002task \u662f\u5177\u6709\u6808\u7ed3\u6784\u7684\u5bf9\u8c61\uff0c\u4e00\u4e2a task \u53ef\u4ee5\u7ba1\u7406\u591a\u4e2a Activity\uff1b\u542f\u52a8\u4e00\u4e2a\u5e94\u7528\uff0c\u4e5f\u5c31\u521b\u5efa\u4e0e\u4e4b\u5bf9\u5e94\u7684 task\u3002<\/p>\n<\/blockquote>\n<p style=\"margin: 1em 0px;\"><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2024\/05\/image.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-3498\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2024\/05\/image.png\" alt=\"\" width=\"2151\" height=\"1105\" srcset=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2024\/05\/image.png 2151w, https:\/\/ai.zhousir.top\/wp-content\/uploads\/2024\/05\/image-768x395.png 768w, https:\/\/ai.zhousir.top\/wp-content\/uploads\/2024\/05\/image-1536x789.png 1536w, https:\/\/ai.zhousir.top\/wp-content\/uploads\/2024\/05\/image-2048x1052.png 2048w\" sizes=\"(max-width: 2151px) 100vw, 2151px\" \/><\/a><\/p>\n<p style=\"margin: 1em 0px;\">Activity \u4e00\u5171\u6709\u4ee5\u4e0b\u56db\u79cd launchMode\uff1a<\/p>\n<ul style=\"padding-left: 1rem; margin-left: 1rem; font-size: 0.9rem; list-style-type: disc;\">\n<li>\n<section><code style=\"font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; font-size: 0.9em; overflow-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0px 2px; color: #ef7060; background-color: rgba(27, 31, 35, 0.05); word-break: break-all;\">standard<\/code><\/section>\n<\/li>\n<li>\n<section><code style=\"font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; font-size: 0.9em; overflow-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0px 2px; color: #ef7060; background-color: rgba(27, 31, 35, 0.05); word-break: break-all;\">singleTop<\/code><\/section>\n<\/li>\n<li>\n<section><code style=\"font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; font-size: 0.9em; overflow-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0px 2px; color: #ef7060; background-color: rgba(27, 31, 35, 0.05); word-break: break-all;\">singleTask<\/code><\/section>\n<\/li>\n<li>\n<section><code style=\"font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; font-size: 0.9em; overflow-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0px 2px; color: #ef7060; background-color: rgba(27, 31, 35, 0.05); word-break: break-all;\">singleInstance<\/code><\/section>\n<\/li>\n<\/ul>\n<p style=\"margin: 1em 0px;\">\u5728 AndroidManifest.xml \u91cc\u628a android:launchMode \u914d\u6210\u4ee5\u4e0a\u56db\u79cd\u4e4b\u4e00\u5373\u53ef\u3002\u4e0b\u9762\u7ed3\u5408\u5b9e\u4f8b\u4e00\u4e00\u4ecb\u7ecd\u3002<\/p>\n<hr>\n<h2 style=\"margin: 1.2em 0px 1em; padding: 0px; font-weight: bold; font-size: 1.3em; border-bottom: 2px solid #ef7060; display: flex;\"><span style=\"display: inline-block; font-weight: bold; background: #ef7060; color: #ffffff; padding: 3px 10px 1px; border-top-right-radius: 3px; border-top-left-radius: 3px; margin-right: 3px;\">\u4e00\u3001standard<\/span><\/h2>\n<p style=\"margin: 1em 0px;\">standard \u662f\u9ed8\u8ba4\u542f\u52a8\u6a21\u5f0f\uff0c\u53ef\u4ee5\u4e0d\u914d android:launchMode\uff0c\u4e5f\u53ef\u4ee5\u663e\u5f0f\u6307\u5b9a\u4e3a standard\u3002\u7528\u540d\u4e3a FirstActivity \u7684 Activity \u6f14\u793a\u3002\u754c\u9762\u91cc\u7684 TextView \u663e\u793a\u5f53\u524d\u5b9e\u4f8b\u5e8f\u5217\u53f7\uff0cButton \u8df3\u8f6c\u5230\u4e0b\u4e00\u4e2a FirstActivity\uff1a<\/p>\n<pre style=\"overflow: auto hidden; word-break: normal; white-space: pre; tab-size: 2; border-radius: 5px; line-height: 2; margin: 1em 0.5em; padding: 0.5em; box-shadow: rgba(0, 0, 0, 0.55) 0px 1px 5px; font-size: 10px; background: #002b36; max-width: 100%; overflow-wrap: normal;\"><code class=\"hljs\" style=\"word-break: normal; white-space: nowrap; tab-size: 2; font-size: 10px; font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; display: block; margin: 0.5em; padding: 3px 5px; overflow-x: auto; color: #93a1a1; background: #002b36; overflow-wrap: normal;\">package com.scott.launchmode;\n\nimport android.app.Activity;\nimport android.content.Intent;\nimport android.os.Bundle;\nimport android.view.View;\nimport android.widget.Button;\nimport android.widget.TextView;\n\npublic class FirstActivity extends Activity {\n    @Override\n    public void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.first);\n        TextView textView = (TextView) findViewById(R.id.textView);\n        textView.setText(this.toString());\n        Button button = (Button) findViewById(R.id.button);\n        button.setOnClickListener(new View.OnClickListener() {\n            @Override\n            public void onClick(View v) {\n                Intent intent = new Intent(FirstActivity.this, FirstActivity.class);\n                startActivity(intent);\n            }\n        });\n    }\n}<\/code><\/pre>\n<p style=\"margin: 1em 0px;\">\u8fde\u7eed\u70b9\u51fb\u51e0\u6b21\u6309\u94ae\uff0c\u4f1a\u51fa\u73b0\u4e0b\u9762\u7684\u73b0\u8c61\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_13153042719kND.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304283KBj5.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304310KX5N.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u90fd\u662f FirstActivity \u7684\u5b9e\u4f8b\uff0c\u4f46\u5e8f\u5217\u53f7\u4e0d\u540c\uff1b\u9700\u8981\u8fde\u7eed\u6309\u540e\u9000\u952e\u4e24\u6b21\uff0c\u624d\u80fd\u56de\u5230\u7b2c\u4e00\u4e2a FirstActivity\u3002standard \u6a21\u5f0f\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304369PTDP.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u6bcf\u6b21\u8df3\u8f6c\u7cfb\u7edf\u90fd\u4f1a\u5728 task \u4e2d\u751f\u6210\u4e00\u4e2a\u65b0\u7684 FirstActivity \u5b9e\u4f8b\uff0c\u653e\u5728\u6808\u9876\uff1b\u6309\u540e\u9000\u624d\u80fd\u770b\u5230\u539f\u6765\u7684\u5b9e\u4f8b\u3002\u8fd9\u5c31\u662f standard\uff1a\u4e0d\u7ba1\u6709\u6ca1\u6709\u5df2\u5b58\u5728\u7684\u5b9e\u4f8b\uff0c\u90fd\u751f\u6210\u65b0\u7684\u5b9e\u4f8b\u3002<\/p>\n<hr>\n<h2 style=\"margin: 1.2em 0px 1em; padding: 0px; font-weight: bold; font-size: 1.3em; border-bottom: 2px solid #ef7060; display: flex;\"><span style=\"display: inline-block; font-weight: bold; background: #ef7060; color: #ffffff; padding: 3px 10px 1px; border-top-right-radius: 3px; border-top-left-radius: 3px; margin-right: 3px;\">\u4e8c\u3001singleTop<\/span><\/h2>\n<p style=\"margin: 1em 0px;\">\u5728\u4e0a\u9762\u57fa\u7840\u4e0a\u4e3a FirstActivity \u6307\u5b9a android:launchMode=&#8221;singleTop&#8221;\uff0c\u7cfb\u7edf\u5c31\u4f1a\u6309 singleTop \u5904\u7406\u8df3\u8f6c\u3002\u91cd\u590d\u4e0a\u9762\u51e0\u4e2a\u52a8\u4f5c\uff0c\u73b0\u8c61\u5982\u4e0b\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304635SODU.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304635SODU.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304635SODU.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u7ed3\u679c\u548c standard \u4e0d\u540c\uff1a\u4e09\u4e2a\u5e8f\u5217\u53f7\u76f8\u540c\uff0c\u7528\u7684\u662f\u540c\u4e00\u4e2a FirstActivity \u5b9e\u4f8b\uff1b\u6309\u4e00\u4e0b\u540e\u9000\u7a0b\u5e8f\u7acb\u5373\u9000\u51fa\uff0c\u8bf4\u660e\u6808\u91cc\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\u3002singleTop \u539f\u7406\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315304722GN59.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u8df3\u8f6c\u65f6\u7cfb\u7edf\u5148\u770b\u6808\u9876\u662f\u5426\u5df2\u6709 FirstActivity \u5b9e\u4f8b\uff0c\u6709\u5219\u4e0d\u518d\u751f\u6210\u65b0\u7684\uff0c\u76f4\u63a5\u4f7f\u7528\u3002\u5982\u679c\u6808\u91cc\u6709\u591a\u4e2a Activity\u3001\u76ee\u6807\u4e0d\u5728\u6808\u9876\u4f1a\u600e\u6837\uff1f\u518d\u65b0\u5efa SecondActivity\uff1a<\/p>\n<pre style=\"overflow: auto hidden; word-break: normal; white-space: pre; tab-size: 2; border-radius: 5px; line-height: 2; margin: 1em 0.5em; padding: 0.5em; box-shadow: rgba(0, 0, 0, 0.55) 0px 1px 5px; font-size: 10px; background: #002b36; max-width: 100%; overflow-wrap: normal;\"><code class=\"hljs\" style=\"word-break: normal; white-space: nowrap; tab-size: 2; font-size: 10px; font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; display: block; margin: 0.5em; padding: 3px 5px; overflow-x: auto; color: #93a1a1; background: #002b36; overflow-wrap: normal;\">package com.scott.launchmode;\n\nimport android.app.Activity;\nimport android.content.Intent;\nimport android.os.Bundle;\nimport android.view.View;\nimport android.widget.Button;\nimport android.widget.TextView;\n\npublic class SecondActivity extends Activity {\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.second);\n        TextView textView = (TextView) findViewById(R.id.textView);\n        textView.setText(this.toString());\n        Button button = (Button) findViewById(R.id.button);\n        button.setOnClickListener(new View.OnClickListener() {\n            @Override\n            public void onClick(View v) {\n                Intent intent = new Intent(SecondActivity.this, FirstActivity.class);\n                startActivity(intent);\n            }\n        });\n    }\n}<\/code><\/pre>\n<p style=\"margin: 1em 0px;\">\u628a\u4e4b\u524d FirstActivity \u7684\u8df3\u8f6c\u6539\u6210\uff1a<\/p>\n<pre style=\"overflow: auto hidden; word-break: normal; white-space: pre; tab-size: 2; border-radius: 5px; line-height: 2; margin: 1em 0.5em; padding: 0.5em; box-shadow: rgba(0, 0, 0, 0.55) 0px 1px 5px; font-size: 10px; background: #002b36; max-width: 100%; overflow-wrap: normal;\"><code class=\"hljs\" style=\"word-break: normal; white-space: nowrap; tab-size: 2; font-size: 10px; font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; display: block; margin: 0.5em; padding: 3px 5px; overflow-x: auto; color: #93a1a1; background: #002b36; overflow-wrap: normal;\">Intent intent = new Intent(FirstActivity.this, SecondActivity.class);\nstartActivity(intent);<\/code><\/pre>\n<p style=\"margin: 1em 0px;\">FirstActivity \u8df3\u5230 SecondActivity\uff0cSecondActivity \u518d\u8df3\u56de FirstActivity\u3002\u6f14\u793a\u7ed3\u679c\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305178OON8.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305190qw5S.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305202EAMP.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u4e24\u4e2a FirstActivity \u7684\u5e8f\u5217\u53f7\u4e0d\u540c\uff0c\u8bc1\u660e\u4ece SecondActivity \u8df3\u56de FirstActivity \u65f6\u751f\u6210\u4e86\u65b0\u5b9e\u4f8b\u3002\u539f\u7406\u56fe\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305257ZGPW.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u4ece SecondActivity \u8df3\u5230 FirstActivity \u65f6\uff0c\u7cfb\u7edf\u53d1\u73b0\u5b58\u5728 FirstActivity \u5b9e\u4f8b\uff0c\u4f46\u4e0d\u5728\u6808\u9876\uff0c\u4e8e\u662f\u91cd\u65b0\u751f\u6210\u4e00\u4e2a\u3002\u8fd9\u5c31\u662f singleTop\uff1a\u5982\u679c\u5bf9\u5e94 Activity \u5b9e\u4f8b\u6b63\u4f4d\u4e8e\u6808\u9876\uff0c\u5219\u590d\u7528\uff0c\u4e0d\u518d\u751f\u6210\u65b0\u5b9e\u4f8b\u3002<\/p>\n<hr>\n<h2 style=\"margin: 1.2em 0px 1em; padding: 0px; font-weight: bold; font-size: 1.3em; border-bottom: 2px solid #ef7060; display: flex;\"><span style=\"display: inline-block; font-weight: bold; background: #ef7060; color: #ffffff; padding: 3px 10px 1px; border-top-right-radius: 3px; border-top-left-radius: 3px; margin-right: 3px;\">\u4e09\u3001singleTask<\/span><\/h2>\n<p style=\"margin: 1em 0px;\">\u5728\u4e0a\u9762\u57fa\u7840\u4e0a\u628a FirstActivity \u6539\u6210 android:launchMode=&#8221;singleTask&#8221;\u3002\u6f14\u793a\u7ed3\u679c\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305647TnpP.gif\" alt=\"\" \/><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305658kkfG.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305668TUnn.gif\" alt=\"\" \/><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305678r9z5.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u8fc7\u7a0b\u4e2d FirstActivity \u7684\u5e8f\u5217\u53f7\u4e0d\u53d8\uff0cSecondActivity \u7684\u5e8f\u5217\u53f7\u5374\u4e0d\u552f\u4e00\uff1a\u4ece SecondActivity \u8df3\u5230 FirstActivity \u6ca1\u6709\u751f\u6210\u65b0\u5b9e\u4f8b\uff0c\u4ece FirstActivity \u8df3\u5230 SecondActivity \u5219\u751f\u6210\u4e86\u65b0\u5b9e\u4f8b\u3002singleTask \u539f\u7406\u56fe\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315305742176v.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u56fe\u4e0b\u534a\u90e8\u5206\u662f SecondActivity \u8df3\u5230 FirstActivity \u540e\u7684\u6808\u53d8\u5316\uff1aSecondActivity \u6d88\u5931\u4e86\u3002\u7cfb\u7edf\u53d1\u73b0\u5df2\u6709 FirstActivity \u5b9e\u4f8b\uff0c\u4e0d\u518d\u751f\u6210\u65b0\u7684\uff0c\u800c\u662f\u628a\u5176\u4e0a\u7684 Activity \u7edf\u7edf\u51fa\u6808\uff0c\u8ba9 FirstActivity \u53d8\u6210\u6808\u9876\u3001\u663e\u793a\u5230\u5e55\u524d\u3002<\/p>\n<p style=\"margin: 1em 0px;\">\u5982\u679c\u628a SecondActivity \u4e5f\u8bbe\u4e3a singleTask\uff0c\u5728\u672c\u793a\u4f8b\u4e2d\u5176\u5b9e\u65e0\u6cd5\u4fdd\u8bc1\u5b83\u552f\u4e00\uff1a\u6bcf\u6b21\u4ece SecondActivity \u8df3\u5230 FirstActivity\uff0cSecondActivity \u90fd\u88ab\u8feb\u51fa\u6808\uff1b\u4e0b\u6b21 FirstActivity \u518d\u8df3\u8fc7\u6765\u65f6\u627e\u4e0d\u5230\u5b58\u5728\u7684\u5b9e\u4f8b\uff0c\u5fc5\u987b\u751f\u6210\u65b0\u7684\u3002\u4f46\u5982\u679c\u6709 ThirdActivity\uff0c\u8ba9 SecondActivity \u548c ThirdActivity \u4e92\u76f8\u8df3\u8f6c\uff0cSecondActivity \u5c31\u53ef\u4ee5\u4fdd\u8bc1\u552f\u4e00\u3002<\/p>\n<p style=\"margin: 1em 0px;\">\u8fd9\u5c31\u662f singleTask\uff1a\u5982\u679c\u53d1\u73b0\u6709\u5bf9\u5e94 Activity \u5b9e\u4f8b\uff0c\u5219\u4f7f\u6b64\u5b9e\u4f8b\u4e4b\u4e0a\u7684\u5176\u4ed6\u5b9e\u4f8b\u7edf\u7edf\u51fa\u6808\uff0c\u4f7f\u5b83\u6210\u4e3a\u6808\u9876\u5e76\u663e\u793a\u5230\u5e55\u524d\u3002<\/p>\n<hr>\n<h2 style=\"margin: 1.2em 0px 1em; padding: 0px; font-weight: bold; font-size: 1.3em; border-bottom: 2px solid #ef7060; display: flex;\"><span style=\"display: inline-block; font-weight: bold; background: #ef7060; color: #ffffff; padding: 3px 10px 1px; border-top-right-radius: 3px; border-top-left-radius: 3px; margin-right: 3px;\">\u56db\u3001singleInstance<\/span><\/h2>\n<p style=\"margin: 1em 0px;\">\u8fd9\u79cd\u6a21\u5f0f\u6bd4\u8f83\u7279\u6b8a\uff1a\u4f1a\u542f\u7528\u4e00\u4e2a\u65b0\u7684\u6808\u7ed3\u6784\uff0c\u628a Activity \u653e\u8fdb\u53bb\uff0c\u5e76\u4fdd\u8bc1\u4e0d\u518d\u6709\u5176\u4ed6 Activity \u5b9e\u4f8b\u8fdb\u5165\u3002\u628a FirstActivity \u6539\u56de launchMode=&#8221;standard&#8221;\uff0cSecondActivity \u8bbe\u4e3a singleInstance\u3002\u56e0\u4e3a\u6d89\u53ca\u591a\u4e2a\u6808\uff0c\u9700\u8981\u5728\u6bcf\u4e2a Activity \u91cc\u663e\u793a\u5f53\u524d\u6808 id\uff1a<\/p>\n<pre style=\"overflow: auto hidden; word-break: normal; white-space: pre; tab-size: 2; border-radius: 5px; line-height: 2; margin: 1em 0.5em; padding: 0.5em; box-shadow: rgba(0, 0, 0, 0.55) 0px 1px 5px; font-size: 10px; background: #002b36; max-width: 100%; overflow-wrap: normal;\"><code class=\"hljs\" style=\"word-break: normal; white-space: nowrap; tab-size: 2; font-size: 10px; font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; display: block; margin: 0.5em; padding: 3px 5px; overflow-x: auto; color: #93a1a1; background: #002b36; overflow-wrap: normal;\">TextView taskIdView = (TextView) findViewById(R.id.taskIdView);\ntaskIdView.setText(&quot;current task id: &quot; + this.getTaskId());<\/code><\/pre>\n<p style=\"margin: 1em 0px;\">\u518d\u6f14\u793a\u8fd9\u4e2a\u6d41\u7a0b\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315306123p7J7.gif\" alt=\"\" \/><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_13153061574zAi.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u8fd9\u4e24\u4e2a Activity \u5b9e\u4f8b\u5206\u522b\u88ab\u653e\u5728\u4e0d\u540c\u7684\u6808\u7ed3\u6784\u4e2d\u3002singleInstance \u539f\u7406\u56fe\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315306406qQQp.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u4ece FirstActivity \u8df3\u5230 SecondActivity \u65f6\uff0c\u91cd\u65b0\u542f\u7528\u4e00\u4e2a\u65b0\u6808\u6765\u653e SecondActivity\uff1b\u6309\u540e\u9000\u56de\u5230\u539f\u59cb\u6808\u3002\u56fe\u4e0b\u534a\u90e8\u5206\uff1a\u5728 SecondActivity \u91cc\u518d\u8df3\u5230 FirstActivity\uff0c\u7cfb\u7edf\u4f1a\u5728\u539f\u59cb\u6808\u91cc\u751f\u6210\u4e00\u4e2a FirstActivity \u5b9e\u4f8b\uff1b\u7136\u540e\u56de\u9000\u4e24\u6b21\u5e76\u6ca1\u6709\u9000\u51fa\uff0c\u800c\u662f\u56de\u5230\u4e86 SecondActivity\u2014\u2014\u56e0\u4e3a\u4ece SecondActivity \u8df3\u51fa\u53bb\u65f6\uff0c\u8d77\u70b9\u53d8\u6210\u4e86 SecondActivity \u6240\u5728\u7684\u6808\uff0c\u9700\u8981\u300c\u56de\u5f52\u300d\u5230\u8fd9\u4e2a\u6808\u3002<\/p>\n<p style=\"margin: 1em 0px;\">\u5982\u679c\u628a FirstActivity \u7684 launchMode \u6539\u6210 singleTop\u3001singleTask\u3001singleInstance \u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\uff0c\u6d41\u7a0b\u5c06\u5982\u56fe\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315306535b7oF.gif\" alt=\"\" \/><\/p>\n<p style=\"margin: 1em 0px;\">\u4e3e\u4e2a\u4f8b\u5b50\u5e2e\u52a9\u7406\u89e3\uff1a\u5047\u5982\u6709\u4e00\u4e2a share \u5e94\u7528\uff0cShareActivity \u662f\u5165\u53e3\u3001\u4e5f\u662f\u53ef\u4f9b\u5176\u4ed6\u5e94\u7528\u8c03\u7528\u7684 Activity\uff0c\u628a\u5b83\u8bbe\u4e3a singleInstance\uff0c\u7136\u540e\u5728\u5176\u4ed6\u5e94\u7528\u4e2d\u8c03\u7528\u3002\u914d\u7f6e\uff1a<\/p>\n<pre style=\"overflow: auto hidden; word-break: normal; white-space: pre; tab-size: 2; border-radius: 5px; line-height: 2; margin: 1em 0.5em; padding: 0.5em; box-shadow: rgba(0, 0, 0, 0.55) 0px 1px 5px; font-size: 10px; background: #002b36; max-width: 100%; overflow-wrap: normal;\"><code class=\"hljs\" style=\"word-break: normal; white-space: nowrap; tab-size: 2; font-size: 10px; font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; display: block; margin: 0.5em; padding: 3px 5px; overflow-x: auto; color: #93a1a1; background: #002b36; overflow-wrap: normal;\">&lt;activity android:name=&quot;.ShareActivity&quot; android:launchMode=&quot;singleInstance&quot;&gt;\n    &lt;intent-filter&gt;\n        &lt;action android:name=&quot;android.intent.action.MAIN&quot; \/&gt;\n        &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; \/&gt;\n    &lt;\/intent-filter&gt;\n    &lt;intent-filter&gt;\n        &lt;action android:name=&quot;android.intent.action.SINGLE_INSTANCE_SHARE&quot; \/&gt;\n        &lt;category android:name=&quot;android.intent.category.DEFAULT&quot; \/&gt;\n    &lt;\/intent-filter&gt;\n&lt;\/activity&gt;<\/code><\/pre>\n<p style=\"margin: 1em 0px;\">\u5176\u4ed6\u5e94\u7528\u8fd9\u6837\u542f\u52a8\uff1a<\/p>\n<pre style=\"overflow: auto hidden; word-break: normal; white-space: pre; tab-size: 2; border-radius: 5px; line-height: 2; margin: 1em 0.5em; padding: 0.5em; box-shadow: rgba(0, 0, 0, 0.55) 0px 1px 5px; font-size: 10px; background: #002b36; max-width: 100%; overflow-wrap: normal;\"><code class=\"hljs\" style=\"word-break: normal; white-space: nowrap; tab-size: 2; font-size: 10px; font-family: Menlo, Monaco, Consolas, 'Liberation Mono', 'Roboto Mono', 'Courier New', 'Microsoft YaHei', monospace; display: block; margin: 0.5em; padding: 3px 5px; overflow-x: auto; color: #93a1a1; background: #002b36; overflow-wrap: normal;\">Intent intent = new Intent(&quot;android.intent.action.SINGLE_INSTANCE_SHARE&quot;);\nstartActivity(intent);<\/code><\/pre>\n<p style=\"margin: 1em 0px;\">\u6253\u5f00 ShareActivity \u540e\u518d\u6309\u540e\u9000\u56de\u5230\u539f\u6765\u754c\u9762\u65f6\uff0cShareActivity \u4f5c\u4e3a\u4e00\u4e2a\u72ec\u7acb\u4e2a\u4f53\u5b58\u5728\uff1b\u8fd9\u65f6\u518d\u6253\u5f00 share \u5e94\u7528\uff0c\u65e0\u9700\u521b\u5efa\u65b0\u5b9e\u4f8b\u5373\u53ef\u770b\u5230\u7ed3\u679c\uff0c\u56e0\u4e3a\u7cfb\u7edf\u4f1a\u67e5\u627e\uff0c\u5b58\u5728\u5219\u76f4\u63a5\u5229\u7528\u3002\u53ef\u4ee5\u5728 ShareActivity \u91cc\u6253\u5370 taskId \u770b\u6548\u679c\u3002\u8fc7\u7a0b\u539f\u7406\u56fe\uff1a<\/p>\n<p style=\"margin: 1em 0px;\"><img decoding=\"async\" src=\"http:\/\/hi.csdn.net\/attachment\/201109\/6\/0_1315307904Gapg.gif\" alt=\"\" \/><\/p>\n<table style=\"border-collapse: collapse; margin: 1.4em auto; max-width: 100%; table-layout: fixed; text-align: left; overflow: auto; display: table; overflow-wrap: break-word; word-break: break-all;\" width=\"817\">\n<thead>\n<tr>\n<th style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top; font-weight: bold; background-color: #fff9f9; color: #ef7060;\">launchMode<\/th>\n<th style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top; font-weight: bold; background-color: #fff9f9; color: #ef7060;\">\u662f\u5426\u65b0\u5efa\u5b9e\u4f8b<\/th>\n<th style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top; font-weight: bold; background-color: #fff9f9; color: #ef7060;\">\u6808\u884c\u4e3a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">standard<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u6bcf\u6b21\u90fd\u65b0\u5efa<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u65b0\u5b9e\u4f8b\u5165\u6808\u9876<\/td>\n<\/tr>\n<tr>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">singleTop<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u6808\u9876\u5df2\u6709\u5219\u590d\u7528<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u4e0d\u5728\u6808\u9876\u5219\u4ecd\u65b0\u5efa<\/td>\n<\/tr>\n<tr>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">singleTask<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u4efb\u52a1\u6808\u91cc\u6709\u5219\u590d\u7528<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u5176\u4e0a\u5b9e\u4f8b\u5168\u90e8\u51fa\u6808\uff0c\u4f7f\u5176\u5230\u6808\u9876<\/td>\n<\/tr>\n<tr>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">singleInstance<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u5355\u72ec\u5360\u7528\u4e00\u4e2a\u6808<\/td>\n<td style=\"font-size: 0.75em; padding: 9px 12px; line-height: 22px; border: 1px solid #ef7060; vertical-align: top;\">\u8be5\u6808\u91cc\u4e0d\u5141\u8bb8\u518d\u8fdb\u5176\u4ed6 Activity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin: 1em 0px;\">\u539f\u6587\u51fa\u5904\uff1a<a href=\"http:\/\/blog.csdn.net\/liuhe688\/article\/details\/6754323\">Activity \u7684\u56db\u79cd launchMode<\/a>\u3002<\/p>\n<blockquote style=\"margin: 20px 0px; display: block; font-size: 0.9em; overflow: auto; border-left: 3px solid #ef7060; color: #6a737d; padding: 10px 10px 10px 20px; background: #fff9f9;\">\n<p style=\"margin: 1em 0px;\"><strong>\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1astandard \u603b\u662f\u65b0\u5efa\uff1bsingleTop \u53ea\u590d\u7528\u6808\u9876\uff1bsingleTask \u590d\u7528\u6808\u5185\u5b9e\u4f8b\u5e76\u6e05\u6389\u5b83\u4e0a\u9762\u7684\u9875\u9762\uff1bsingleInstance \u72ec\u5360\u4e00\u4e2a\u65b0\u6808\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u8981\u8bb2\u7684\u662f Activity \u7684\u56db\u79cd launchMode\u3002launchMode \u5728\u591a\u4e2a Activity  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[195],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/806"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=806"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/806\/revisions"}],"predecessor-version":[{"id":3541,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/806\/revisions\/3541"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}