{"id":54,"date":"2010-05-12T10:06:13","date_gmt":"2010-05-12T02:06:13","guid":{"rendered":"http:\/\/www.myvoipapp.com\/blogs\/yxh\/?p=54"},"modified":"2019-02-12T20:11:57","modified_gmt":"2019-02-12T12:11:57","slug":"android%e5%bc%80%e5%8f%91%e6%8c%87%e5%af%bc%e9%9a%8f%e8%af%912-%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%865","status":"publish","type":"post","link":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2010\/05\/12\/android%e5%bc%80%e5%8f%91%e6%8c%87%e5%af%bc%e9%9a%8f%e8%af%912-%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%865\/","title":{"rendered":"Android\u5f00\u53d1\u6307\u5bfc\u968f\u8bd1(2) \u2014 \u5e94\u7528\u7a0b\u5e8f\u57fa\u672c\u539f\u7406(5)"},"content":{"rendered":"<p><strong>Activities\u4e0eTasks(\u4efb\u52a1)<\/strong><\/p>\n<p>\u4e00\u4e2aActivity\u53ef\u4ee5\u542f\u52a8\u53e6\u4e00\u4e2aActivity, \u5373\u4f7f\u8be5Activity\u5b9a\u4e49\u5728\u53e6\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e2d. \u7528\u6237\u65e0\u6cd5\u533a\u5206\u51fa\u8fd9\u4e24\u4e2aActivity\u6709\u53ef\u80fd\u662f\u5b9a\u4e49\u5e76\u8fd0\u884c\u5728\u4e0d\u540c\u7684\u5e94\u7528\u7a0b\u5e8f\u8fdb\u7a0b\u4e2d.<\/p>\n<p>Android\u5728\u540c\u4e00\u4e2aTask\u4e2d\u7ef4\u6301\u8fd9\u4e24\u4e2aActivity, \u4ee5\u4fdd\u6301\u7528\u6237\u7684\u4f53\u9a8c. \u7b80\u5355\u800c\u8a00, \u5bf9\u7528\u6237\u4f53\u9a8c\u6765\u8bf4, \u4e00\u4e2aTask\u5c31\u662f\u4e00\u4e2a&#8221;\u5e94\u7528\u7a0b\u5e8f&#8221;. \u5b83\u662f\u4e00\u7ec4\u76f8\u5173\u7684activity,\u5e76\u7ec4\u7ec7\u5728\u540c\u4e00\u4e2a\u5806\u6808\u4e2d. \u5806\u6808\u4e2d\u6839activity(root activity)\u5c31\u662f\u542f\u52a8\u5f53\u524dtask\u7684activity. \u5806\u6808\u6700\u9876\u90e8\u7684activity\u5c31\u662f\u5f53\u524d\u6b63\u5728\u8fd0\u884c\u7684activity. \u5f53\u4e00\u4e2aactivity\u542f\u52a8\u53e6\u4e00\u4e2aactiviey, \u65b0\u7684activity\u5c31\u63a8\u5165\u5806\u6808, \u79f0\u4e3a\u5f53\u524d\u8fd0\u884c\u7684activity. \u4ee5\u524d\u7684activity\u4fdd\u7559\u5728\u6808\u4e2d. \u5f53\u7528\u6237\u6309\u4e0bBACK\u952e, \u5f53\u524dactivity\u5c31\u4ece\u5806\u6808\u4e2d\u5f39\u51fa, \u4ee5\u524d\u7684activity\u6062\u590d\u4e3a\u5f53\u524d\u8fd0\u884c\u7684activity.<\/p>\n<p>\u5806\u6808\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u5bf9\u8c61. \u5982\u679c\u4e00\u4e2atask\u5305\u542b\u540c\u4e00\u4e2aactivity\u7684\u591a\u4e2a\u5b9e\u4f8b, \u5806\u6808\u5bf9\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u6709\u4e00\u4e2a\u72ec\u7acb\u7684\u5165\u53e3(entry). \u6808\u4e2d\u7684activity\u6c38\u8fdc\u4e0d\u4f1a\u91cd\u65b0\u8fdb\u884c\u8c03\u6574, \u53ea\u6709\u63a8\u8fdb(Push)\u548c\u5f39\u51fa(Pop).<\/p>\n<p>task\u5c31\u662factivities\u7684\u6808. \u6ca1\u6709\u529e\u6cd5\u5bf9task\u4e2d\u6240\u6709\u7684activities\u72ec\u7acb\u8bbe\u7f6e\u503c(<span style=\"color: #0000ff;\">\u7b14\u6ce8: \u662f\u6307\u53d8\u91cf\u503c\u5417?<\/span>). task\u7684\u503c\u53ea\u80fd\u8bbe\u7f6e\u5728\u6839activity\u4e2d.<\/p>\n<p>task\u4e2d\u7684\u6240\u6709activities\u4f5c\u4e3a\u4e00\u4e2a\u5355\u5143\u5171\u540c\u8fdb\u884c\u79fb\u52a8. \u6574\u4e2atask\u53ef\u4ee5\u8bbe\u7f6e\u5230\u524d\u53f0\u8fd0\u884c, \u4e5f\u53ef\u4ee5\u9001\u5230\u540e\u53f0\u8fd0\u884c.<br \/>\n<strong><br \/>\n\u4eb2\u548c(Affinities)\u4e0e\u65b0task<\/strong><br \/>\n\u7f3a\u7701\u60c5\u51b5\u4e0b, \u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u6240\u6709Activities\u5171\u6709\u4e00\u4e2aaffinity. \u6bcf\u4e2aactivity\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u72ec\u7acb\u7684affinity. \u5b9a\u4e49\u5728\u4e0d\u540c\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684activities\u53ef\u4ee5\u5171\u4eab\u540c\u4e00\u4e2aaffinity. \u5728\u540c\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684activities\u53ef\u4ee5\u5206\u914d\u4e0d\u540c\u7684affinities.<\/p>\n<p>FLAG_ACTIVITY_NEW_TASK\u6807\u8bc6<br \/>\n\u5982\u679c\u4f20\u9012\u7ed9startActivity()\u7684Intent\u5305\u542bFLAG_ACTIVITY_NEW_TASK\u6807\u8bc6, \u7cfb\u7edf\u4f1a\u67e5\u627e\u4e0d\u540c\u7684task\u6765\u627f\u8f7d\u5f53\u524d\u7684activity. \u901a\u5e38, \u8fd9\u4f1a\u662f\u4e2a\u65b0task. \u5982\u679c\u5df2\u7ecf\u6709\u4e00\u4e2atask\u5177\u6709\u4e0e\u5f53\u524dactivity\u76f8\u540c\u7684affinity, \u5219\u5f53\u524d\u7684activity\u4f1a\u767b\u5f55\u8fdb\u8be5task.<\/p>\n<p>allowTaskReparenting\u5c5e\u6027<br \/>\n\u5982\u679callowTaskReparenting\u5c5e\u6027\u8bbe\u7f6e\u4e3atrue, activity\u53ef\u4ee5\u4ece\u542f\u52a8\u5b83\u7684task\u79fb\u5230\u53e6\u4e00\u4e2a\u5177\u6709\u76f8\u540caffinity\u7684task\u4e2d.<\/p>\n<p><strong>\u542f\u52a8\u6a21\u5f0f<\/strong><br \/>\nstandard (\u7f3a\u7701\u6a21\u5f0f)<br \/>\nsingleTop<br \/>\nsingleTask<br \/>\nsingleInstance<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Activities\u4e0eTasks(\u4efb\u52a1) \u4e00\u4e2aActivity\u53ef\u4ee5\u542f\u52a8\u53e6\u4e00\u4e2aActivity, \u5373\u4f7f\u8be5Activity\u5b9a\u4e49\u5728\u53e6\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e2d. \u7528\u6237\u65e0\u6cd5\u533a\u5206\u51fa\u8fd9&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2010\/05\/12\/android%e5%bc%80%e5%8f%91%e6%8c%87%e5%af%bc%e9%9a%8f%e8%af%912-%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%865\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-54","post","type-post","status-publish","format-standard","hentry","category-6"],"_links":{"self":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/54","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/comments?post=54"}],"version-history":[{"count":2,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/54\/revisions"}],"predecessor-version":[{"id":1969,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/54\/revisions\/1969"}],"wp:attachment":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/media?parent=54"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/categories?post=54"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/tags?post=54"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}