{"id":532,"date":"2011-05-24T07:19:34","date_gmt":"2011-05-23T23:19:34","guid":{"rendered":"http:\/\/leybreeze.com\/blog\/?p=532"},"modified":"2011-05-31T12:30:27","modified_gmt":"2011-05-31T04:30:27","slug":"%e8%bf%9b%e7%a8%8b%e5%92%8c%e7%ba%bf%e7%a8%8b","status":"publish","type":"post","link":"http:\/\/leybreeze.com\/blog\/?p=532","title":{"rendered":"\u8fdb\u7a0b\u548c\u7ebf\u7a0b"},"content":{"rendered":"<p>\u5728\u4e00\u4e2a\u7a0b\u5e8f\u7684\u4ec5\u6709\u7684\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7ec4\u4ef6\u542f\u52a8\u65f6\uff08\u9664\u6b64\u4e4b\u5916\u6ca1\u6709\u5176\u4ed6\u7ec4\u4ef6\u5728\u8fd0\u884c\uff09\uff0cAndroid\u7cfb\u7edf\u4f1a\u4e3a\u8be5\u7a0b\u5e8f\u5f00\u542f\u4e00\u4e2a\u5305\u542b\u4e00\u4e2a\u5355\u72ec\u6267\u884c\u7ebf\u7a0b\u7684\u65b0\u7684Linux\u8fdb\u7a0b\u3002\u9ed8\u8ba4\u6765\u8bf4\uff0c\u540c\u4e00\u4e2a\u7a0b\u5e8f\u7684\u6240\u6709\u7ec4\u4ef6\u90fd\u8fd0\u884c\u4e8e\u540c\u4e00\u4e2a\u8fdb\u7a0b\u7684\u540c\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\uff08\u88ab\u79f0\u4e3a\u201c\u4e3b\u201d\u7ebf\u7a0b\uff08main thread\uff09\uff09\u3002\u5982\u679c\u4e00\u4e2a\u7ec4\u4ef6\u5728\u542f\u52a8\u65f6\u8be5\u7a0b\u5e8f\u5df2\u7ecf\u6709\u4e00\u4e2a\u8fdb\u7a0b\u5b58\u5728\u7684\u8bdd\uff08\u8fd9\u662f\u56e0\u4e3a\u8be5\u7a0b\u5e8f\u5b58\u5728\u6709\u5176\u4ed6\u7684\u7ec4\u4ef6\uff09\uff0c\u90a3\u4e48\u7ec4\u4ef6\u5c06\u8fd0\u884c\u4e8e\u8fd9\u4e2a\u8fdb\u7a0b\u4e2d\u4e14\u5171\u7528\u7ebf\u7a0b\u3002\u4e0d\u8fc7\uff0c\u53ef\u4ee5\u5b89\u6392\u7a0b\u5e8f\u4e2d\u7684\u4e0d\u540c\u7ec4\u4ef6\u8fd0\u884c\u4e8e\u4e0d\u540c\u7684\u7ebf\u7a0b\uff0c\u4ee5\u53ca\u4e3a\u4efb\u4f55\u8fdb\u7a0b\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u3002<\/p>\n<p>\u672c\u6587\u6863\u5c06\u8ba8\u8bbaAndroid\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u8fdb\u7a0b\u548c\u7ebf\u7a0b\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002<\/p>\n<h2>\u8fdb\u7a0b<\/h2>\n<p>\u9ed8\u8ba4\u5730\uff0c\u540c\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684\u6240\u6709\u7ec4\u4ef6\u90fd\u8fd0\u884c\u4e8e\u540c\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u5927\u90e8\u5206\u7684\u7a0b\u5e8f\u4e0d\u5e94\u8be5\u6539\u53d8\u8fd9\u4e00\u70b9\u3002\u4e0d\u8fc7\uff0c\u5982\u679c\u8ba4\u4e3a\u6709\u5fc5\u8981\u63a7\u5236\u67d0\u4e2a\u7279\u5b9a\u7684\u7ec4\u4ef6\u6240\u5c5e\u7684\u8fdb\u7a0b\uff0c\u53ef\u4ee5\u5728manifest\u6587\u4ef6\u4e2d\u8fdb\u884c\u8bbe\u5b9a\u3002<\/p>\n<p>\u6bcf\u4e00\u79cd\u7c7b\u578b\u7684\u7ec4\u4ef6\u5143\u7d20\u2014\u2014&lt;activity&gt;\u3001&lt;service&gt;\u3001&lt;receiver&gt;\u548c&lt;provider&gt;\u7684manifest\u6761\u76ee\u90fd\u652f\u6301<span style=\"color: #008000;\">android:process<\/span>\u5c5e\u6027\u6765\u6307\u5b9a\u7ec4\u4ef6\u5e94\u5f53\u8fd0\u884c\u4e8e\u54ea\u4e00\u4e2a\u8fdb\u7a0b\u4e4b\u4e2d\u3002\u53ef\u4ee5\u8bbe\u7f6e\u8be5\u5c5e\u6027\u4ee5\u4f7f\u7ec4\u4ef6\u8fd0\u884c\u4e8e\u5176\u81ea\u6709\u7684\u8fdb\u7a0b\u6216\u8ba9\u4e00\u4e9b\u7ec4\u4ef6\u5171\u7528\u8fdb\u7a0b\u7684\u540c\u65f6\u53e6\u4e00\u4e9b\u4f7f\u7528\u72ec\u7acb\u8fdb\u7a0b\u3002\u8fd8\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e<span style=\"color: #008000;\">android:process<\/span>\u6765\u4e8b\u4e0d\u540c\u7a0b\u5e8f\u7684\u7ec4\u4ef6\u8fd0\u884c\u4e8e\u7edf\u4e00\u8fdb\u7a0b\u2014\u2014\u5047\u8bbe\u8fd9\u4e9b\u7a0b\u5e8f\u5171\u4eab\u540c\u6837\u7684Linux\u7528\u6237ID\u5e76\u88ab\u76f8\u540c\u7684\u6743\u9650\u6807\u8bb0\u3002<\/p>\n<p>&lt;application&gt;\u5143\u7d20\u4e5f\u6709<span style=\"color: #008000;\">android:process<\/span>\u5c5e\u6027\uff0c\u7528\u6765\u7ed9\u6240\u6709\u7684\u7ec4\u4ef6\u8bbe\u5b9a\u9ed8\u8ba4\u503c\u3002<\/p>\n<p>Android\u5728\u67d0\u4e9b\u65f6\u5019\uff08\u6bd4\u5982\u5185\u5b58\u4e0d\u8db3\u800c\u7528\u6237\u53c8\u9a6c\u4e0a\u9700\u8981\u66f4\u591a\u7684\u5185\u5b58\u6765\u8fd0\u884c\u5176\u4ed6\u7684\u8fdb\u7a0b\uff09\u4f1a\u505a\u51fa\u5173\u95ed\u67d0\u4e2a\u8fdb\u7a0b\u7684\u51b3\u5b9a\u3002\u8fd0\u884c\u4e8e\u8be5\u8fdb\u7a0b\u7684\u5e94\u7528\u7a0b\u5e8f\u7ec4\u4ef6\u4e5f\u5c31\u76f8\u5e94\u5730\u4f1a\u88ab\u9500\u6bc1\u3002\u5f53\u518d\u6b21\u9700\u8981\u5b83\u4eec\u65f6\u5c06\u4f1a\u91cd\u542f\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/p>\n<p>\u5728\u51b3\u5b9a\u7ec8\u6b62\u54ea\u4e00\u4e2a\u8fdb\u7a0b\u65f6\uff0cAndroid\u4f1a\u6743\u8861\u5b83\u4eec\u5bf9\u4e8e\u7528\u6237\u7684\u91cd\u8981\u6027\u3002\u6bd4\u5982\uff0c\u7cfb\u7edf\u66f4\u6709\u53ef\u80fd\u5173\u95ed\u4e00\u4e2a\u6d3b\u52a8\u5728\u5c4f\u5e55\u4e0a\u4e0d\u53ef\u89c1\u7684\u8fdb\u7a0b\u800c\u4e0d\u662f\u4e00\u4e2a\u6d3b\u52a8\u4ecd\u7136\u53ef\u89c1\u7684\u8fdb\u7a0b\u3002\u56e0\u6b64\uff0c\u662f\u5426\u7ec8\u6b62\u4e00\u4e2a\u8fdb\u7a0b\u53d6\u51b3\u4e8e\u8fdb\u7a0b\u4e2d\u7ec4\u4ef6\u7684\u8fd0\u884c\u72b6\u6001\u3002\u5177\u4f53\u51b3\u5b9a\u7ec8\u6b62\u54ea\u4e00\u4e2a\u8fdb\u7a0b\u7684\u89c4\u5219\u5c06\u5728\u4e4b\u540e\u8ba8\u8bba\u3002<\/p>\n<h2>\u8fdb\u7a0b\u751f\u547d\u5468\u671f<\/h2>\n<p>Android\u7cfb\u7edf\u603b\u662f\u8bd5\u56fe\u5c3d\u53ef\u80fd\u957f\u65f6\u95f4\u5730\u4fdd\u6301\u4e00\u4e2a\u7a0b\u5e8f\u8fdb\u7a0b\uff0c\u4e0d\u8fc7\u65e7\u7684\u8fdb\u7a0b\u6700\u7ec8\u5c06\u88ab\u79fb\u9664\u6765\u4e3a\u66f4\u4e3a\u91cd\u8981\u7684\u8fdb\u7a0b\u63d0\u4f9b\u5185\u5b58\u3002\u4e3a\u4e86\u51b3\u5b9a\u4fdd\u7559\u54ea\u4e2a\u8fdb\u7a0b\uff0c\u6740\u9664\u54ea\u4e2a\u8fdb\u7a0b\uff0c\u7cfb\u7edf\u5c06\u6bcf\u4e00\u4e2a\u8fdb\u7a0b\u7f6e\u4e8e\u4e00\u4e2a\u57fa\u4e8e\u8fdb\u7a0b\u5185\u8fd0\u884c\u7684\u7ec4\u4ef6\u53ca\u5176\u72b6\u6001\u7684\u201c\u91cd\u8981\u6027\u5c42\u7ea7\u201d\u4e4b\u4e2d\u3002\u6700\u4f4e\u91cd\u8981\u6027\u7684\u8fdb\u7a0b\u5c06\u88ab\u6700\u5148\u53bb\u9664\uff0c\u4e4b\u540e\u662f\u6b21\u4f4e\u91cd\u8981\u6027\u7684\uff0c\u4ee5\u6b64\u7c7b\u63a8\u76f4\u81f3\u80fd\u591f\u63d0\u4f9b\u8db3\u591f\u7684\u7cfb\u7edf\u8d44\u6e90\u3002<\/p>\n<p>\u91cd\u8981\u6027\u5c42\u7ea7\u4e2d\u6709\u4e94\u4e2a\u7b49\u7ea7\u3002\u4e0b\u9762\u6839\u636e\u91cd\u8981\u6027\u987a\u5e8f\u5217\u51fa\u4e86\u4e0d\u540c\u7c7b\u578b\u7684\u8fdb\u7a0b\uff08\u7b2c\u4e00\u79cd\u8fdb\u7a0b\u662f<em>\u6700\u4e3a\u91cd\u8981<\/em>\u7684\uff0c\u5c06\u88ab<em>\u6700\u540e\u6740\u9664<\/em>\uff09\uff1a<\/p>\n<p>1. <strong>\u524d\u53f0\u8fdb\u7a0b<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u4e00\u4e2a\u7528\u6237\u5f53\u524d\u6b63\u5728\u4f7f\u7528\u7684\u8fdb\u7a0b\u3002\u5982\u679c\u4ee5\u4e0b\u4efb\u4e00\u6761\u4ef6\u88ab\u6ee1\u8db3\uff0c\u8fdb\u7a0b\u5c31\u88ab\u5212\u5f52\u4e3a\u8be5\u7c7b\u578b\uff1a<\/p>\n<p><span style=\"font-size: small;\"> <\/span><\/p>\n<ul>\n<li><span style=\"font-size: small;\">\u5b83\u5305\u542b\u4e00\u4e2a\u7528\u6237\u6b63\u5728\u8fdb\u884c\u4ea4\u4e92\u64cd\u4f5c\u7684\u6d3b\u52a8\uff08\u8be5\u6d3b\u52a8\u7684onResume()\u65b9\u6cd5\u5df2\u88ab\u8fd4\u56de\uff09\u3002<\/span><\/li>\n<li><span style=\"font-size: small;\">\u5b83\u5305\u542b\u4e00\u4e2a\u4e0e\u7528\u6237\u6b63\u5728\u8fdb\u884c\u4ea4\u4e92\u64cd\u4f5c\u7684\u7684\u6d3b\u52a8\u76f8\u7ed1\u5b9a\u7684\u670d\u52a1\u3002<br \/>\n<\/span><\/li>\n<li><span style=\"font-size: small;\">\u5b83\u5305\u542b\u4e00\u4e2a\u201c\u5728\u524d\u53f0\u8fd0\u884c\u7684\u201d\u670d\u52a1\u2014\u2014\u670d\u52a1\u8c03\u7528\u4e86startForeground()\u3002<br \/>\n<\/span><\/li>\n<li><span style=\"font-size: small;\">\u5b83\u5305\u542b\u4e86\u4e00\u4e2a\u6b63\u5728\u6267\u884c\u5176\u751f\u547d\u5468\u671f\u56de\u9988\u65b9\u6cd5\u4e4b\u4e00\uff08onCreate()\uff0conStart()\u6216onDestroy()\uff09\u7684\u670d\u52a1\u3002<br \/>\n<\/span><\/li>\n<li><span style=\"font-size: small;\">\u5b83\u5305\u542b\u4e86\u4e00\u4e2a\u6b63\u5728\u6267\u884c\u5176onReceive()\u65b9\u6cd5\u7684\u5e7f\u64ad\u63a5\u6536\u8005\u3002<br \/>\n<\/span><\/li>\n<\/ul>\n<p style=\"padding-left: 30px;\">\u901a\u5e38\uff0c\u5728\u67d0\u4e00\u65f6\u523b\u53ea\u4f1a\u5b58\u5728\u5c11\u6570\u7684\u524d\u53f0\u8fdb\u7a0b\u3002\u5b83\u4eec\u5c06\u88ab\u6700\u540e\u6740\u9664\u2014\u2014\u5728\u5185\u5b58\u6781\u7aef\u4e0d\u8db3\u7684\u60c5\u51b5\u4e0b\u3002\u901a\u5e38\u6b64\u65f6\u8bbe\u5907\u5904\u4e8e\u5185\u5b58\u5206\u9875\u72b6\u6001\uff0c\u9700\u8981\u6740\u9664\u524d\u53f0\u8fdb\u7a0b\u6765\u4fdd\u6301\u7528\u6237\u754c\u9762\u54cd\u5e94\u3002<\/p>\n<p>2. <strong>\u53ef\u89c1\u8fdb\u7a0b<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u8fd9\u7c7b\u8fdb\u7a0b\u6ca1\u6709\u4efb\u4f55\u524d\u53f0\u7ec4\u4ef6\uff0c\u4f46\u662f\u53ef\u4ee5\u5f71\u54cd\u7528\u6237\u5728\u5c4f\u5e55\u4e0a\u770b\u5230\u7684\u5185\u5bb9\u3002\u5982\u679c\u4ee5\u4e0b\u4efb\u4e00\u6761\u4ef6\u88ab\u6ee1\u8db3\uff0c\u8fdb\u7a0b\u5c31\u88ab\u5212\u5f52\u4e3a\u53ef\u89c1\uff1a<\/p>\n<ul>\n<li>\u5b83\u5305\u542b\u4e00\u4e2a\u4e0d\u5728\u524d\u53f0\u4f46\u662f\u5bf9\u7528\u6237\u53ef\u89c1\u7684\u6d3b\u52a8\uff08\u5176onPause()\u65b9\u6cd5\u5df2\u88ab\u8c03\u7528\uff09\u3002\u6bd4\u5982\uff0c\u524d\u53f0\u6d3b\u52a8\u662f\u4e00\u4e2a\u5bf9\u8bdd\u6846\uff0c\u800c\u524d\u4e00\u4e2a\u6d3b\u52a8\u4ecd\u53ef\u4ee5\u88ab\u770b\u5230\u5b58\u5728\u4e8e\u5176\u540e\u65b9\u7684\u60c5\u51b5\u3002<\/li>\n<li>\u5b83\u5305\u542b\u4e00\u4e2a\u4e0e\u53ef\u89c1\u6d3b\u52a8\uff08\u6216\u524d\u53f0\u6d3b\u52a8\uff09\u76f8\u7ed1\u5b9a\u7684\u670d\u52a1\u3002<\/li>\n<\/ul>\n<p>3. <strong>\u670d\u52a1\u8fdb\u7a0b<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u8fd9\u662f\u4e00\u7c7b\u8fd0\u884c\u7740\u7531startService()\u65b9\u6cd5\u542f\u52a8\u7684\u670d\u52a1\u4f46\u4e0d\u5c5e\u4e8e\u524d\u4e24\u79cd\u8fdb\u7a0b\u7684\u8fdb\u7a0b\u3002\u5c3d\u7ba1\u670d\u52a1\u8fdb\u7a0b\u4e0d\u4e0e\u4efb\u4f55\u7528\u6237\u76f4\u63a5\u770b\u5230\u7684\u5185\u5bb9\u7ed1\u5b9a\uff0c\u5b83\u4eec\u786e\u5b9e\u5728\u6267\u884c\u7528\u6237\u6240\u5e0c\u671b\u7684\u5de5\u4f5c\uff08\u6bd4\u5982\u80cc\u666f\u64ad\u653emp3\u6216\u662f\u4ece\u7f51\u7edc\u4e0b\u8f7d\u6570\u636e\uff09\uff0c\u56e0\u6b64\u7cfb\u7edf\u53ea\u6709\u5728\u4e9f\u9700\u5185\u5b58\u7ef4\u6301\u6240\u6709\u7684\u524d\u53f0\u548c\u53ef\u89c1\u8fdb\u7a0b\u65f6\u624d\u4f1a\u6740\u9664\u4ed6\u4eec\u3002<\/p>\n<p>4. <strong>\u540e\u53f0\u8fdb\u7a0b<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u8fd9\u662f\u4e00\u7c7b\u5305\u542b\u4e00\u4e2a\u5f53\u524d\u4e0d\u5bf9\u7528\u6237\u53ef\u89c1\u7684\u6d3b\u52a8\uff08\u6d3b\u52a8\u7684onStop()\u65b9\u6cd5\u5df2\u88ab\u8c03\u7528\uff09\u3002\u8fd9\u4e9b\u8fdb\u7a0b\u5bf9\u7528\u6237\u4f53\u9a8c\u6ca1\u6709\u76f4\u63a5\u5f71\u54cd\uff0c\u5f53\u524d\u53f0\u3001\u53ef\u89c1\u6216\u670d\u52a1\u8fdb\u7a0b\u9700\u8981\u5185\u5b58\u65f6\u5b83\u4eec\u4f1a\u88ab\u968f\u65f6\u6740\u9664\u3002\u901a\u5e38\u6709\u7740\u5927\u91cf\u7684\u540e\u53f0\u8fdb\u7a0b\u5728\u8fd0\u884c\uff0c\u5b83\u4eec\u88ab\u4fdd\u5b58\u5728\u4e00\u4e2aLRU\uff08Least recently used\uff09\u8868\u4e2d\u4ee5\u786e\u4fdd\u6700\u540e\u770b\u5230\u7684\u6d3b\u52a8\u6240\u5728\u7684\u8fdb\u7a0b\u4f1a\u88ab\u6700\u540e\u6740\u9664\u3002\u5982\u679c\u4e00\u4e2a\u6d3b\u52a8\u6b63\u786e\u5730\u6267\u884c\u5176\u751f\u547d\u5468\u671f\u65b9\u6cd5\u5e76\u4fdd\u5b58\u5176\u72b6\u6001\uff0c\u6740\u6b7b\u5b83\u7684\u8fdb\u7a0b\u4e0d\u4f1a\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3002\u8fd9\u662f\u56e0\u4e3a\u5f53\u7528\u6237\u8fd4\u56de\u6d3b\u52a8\u65f6\uff0c\u6240\u6709\u7684\u53ef\u89c1\u72b6\u6001\u5c06\u88ab\u6062\u590d\u3002\u53c2\u89c1\u201c\u6d3b\u52a8\uff08Activities\uff09\u201d\u6587\u6863\u4ee5\u4e86\u89e3\u5173\u4e8e\u4fdd\u5b58\u4e0e\u6062\u590d\u72b6\u6001\u7684\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n<p>5. <strong>\u7a7a\u8fdb\u7a0b<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u8fd9\u662f\u4e00\u7c7b\u6ca1\u6709\u4efb\u4f55\u6d3b\u52a8\u7684\uff08active\uff09\u5e94\u7528\u7a0b\u5e8f\u7ec4\u4ef6\u7684\u8fdb\u7a0b\u3002\u4fdd\u6301\u8fd9\u6837\u4e00\u4e2a\u8fdb\u7a0b\u7684\u552f\u4e00\u7406\u7531\u662f\u4f5c\u4e3a\u7f13\u5b58\u6765\u63d0\u9ad8\u4e0b\u4e00\u6b21\u6709\u7ec4\u4ef6\u8981\u5728\u5176\u5185\u8fd0\u884c\u65f6\u7684\u542f\u52a8\u901f\u5ea6\u3002\u7cfb\u7edf\u4e3a\u4e86\u5728\u8fdb\u7a0b\u7f13\u5b58\u548c\u5e95\u5c42\u6838\u5fc3\u7f13\u5b58\u95f4\u5e73\u8861\u6574\u4f53\u7cfb\u7edf\u8d44\u6e90\u800c\u5e38\u5e38\u6740\u9664\u8fd9\u4e9b\u7a7a\u8fdb\u7a0b\u3002<\/p>\n<p>Android\u6839\u636e\u8fdb\u7a0b\u4e2d\u5f53\u524d\u6d3b\u52a8\u7740\u7684\u7ec4\u4ef6\u7684\u91cd\u8981\u6027\u6765\u5c3d\u53ef\u80fd\u9ad8\u5730\u7ed9\u4e00\u4e2a\u8fdb\u7a0b\u5b9a\u7ea7\u522b\u3002\u6bd4\u5982\uff0c\u5982\u679c\u4e00\u4e2a\u8fdb\u7a0b\u5305\u542b\u4e00\u4e2a\u670d\u52a1\u548c\u4e00\u4e2a\u53ef\u89c1\u6d3b\u52a8\uff0c\u90a3\u4e48\u8fdb\u7a0b\u4f1a\u88ab\u5206\u7ea7\u4e3a\u53ef\u89c1\u8fdb\u7a0b\u800c\u4e0d\u662f\u670d\u52a1\u8fdb\u7a0b\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u8fdb\u7a0b\u7684\u5c42\u7ea7\u53ef\u80fd\u4f1a\u56e0\u4e3a\u5176\u4ed6\u8fdb\u7a0b\u4f9d\u8d56\u4e8e\u5b83\u800c\u88ab\u63d0\u5347\u3002\u670d\u52a1\u4e8e\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u7684\u8fdb\u7a0b\u4e0d\u53ef\u80fd\u6bd4\u90a3\u4e2a\u8fdb\u7a0b\u7684\u5c42\u7ea7\u4f4e\u3002\u6bd4\u5982\uff0c\u8fdb\u7a0bA\u4e2d\u7684\u4e00\u4e2a\u5185\u5bb9\u63d0\u4f9b\u8005\u670d\u52a1\u4e8e\u8fdb\u7a0bB\u4e2d\u7684\u4e00\u4e2a\u5ba2\u6237\u7aef\uff0c\u53c8\u6216\u662f\u8fdb\u7a0bA\u4e2d\u7684\u4e00\u4e2a\u670d\u52a1\u4e0e\u8fdb\u7a0bB\u4e2d\u7684\u4e00\u4e2a\u7ec4\u4ef6\u7ed1\u5b9a\uff0c\u90a3\u4e48\u8fdb\u7a0bA\u88ab\u8ba4\u4e3a\u81f3\u5c11\u8981\u548c\u8fdb\u7a0bB\u540c\u6837\u91cd\u8981\u3002<\/p>\n<p>\u7531\u4e8e\u8fd0\u884c\u670d\u52a1\u7684\u8fdb\u7a0b\u6bd4\u8fd0\u884c\u540e\u53f0\u6d3b\u52a8\u7684\u8fdb\u7a0b\u5c42\u7ea7\u9ad8\uff0c\u4e00\u4e2a\u6267\u884c\u957f\u65f6\u95f4\u64cd\u4f5c\u7684\u6d3b\u52a8\u5e94\u8be5\u5f00\u542f\u4e00\u4e2a\u670d\u52a1\u6765\u5904\u7406\u8be5\u5de5\u4f5c\u800c\u4e0d\u662f\u7b80\u5355\u5730\u521b\u5efa\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u2014\u2014\u7279\u522b\u662f\u8be5\u64cd\u4f5c\u53ef\u80fd\u6bd4\u6d3b\u52a8\u672c\u8eab\u6301\u7eed\u66f4\u4e45\u65f6\u3002\u8fd9\u6837\u7684\u4f8b\u5b50\u6709\u4e2a\u540e\u53f0\u64ad\u653e\u97f3\u4e50\u6216\u662f\u4e0a\u4f20\u4e00\u5f20\u62cd\u6444\u7684\u7167\u7247\u5230\u7f51\u4e0a\u3002\u4f7f\u7528\u670d\u52a1\u81f3\u5c11\u53ef\u4ee5\u786e\u4fdd\u8be5\u64cd\u4f5c\u6709\u670d\u52a1\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\uff0c\u800c\u4e0d\u5fc5\u5728\u610f\u6d3b\u52a8\u672c\u8eab\u600e\u6837\u3002\u6b63\u5982\u4e4b\u524d\u5728\u5e7f\u64ad\u63a5\u6536\u8005\u751f\u547d\u5468\u671f\u4e00\u8282\u4e2d\u63d0\u5230\u7684\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u5e7f\u64ad\u63a5\u6536\u8005\u5e94\u5f53\u7528\u670d\u52a1\u800c\u4e0d\u662f\u7528\u7ebf\u7a0b\u6765\u6267\u884c\u82b1\u8d39\u65f6\u95f4\u7684\u5de5\u4f5c\u7684\u539f\u56e0\u3002<\/p>\n<h2>\u7ebf\u7a0b<\/h2>\n<p>\u5f53\u4e00\u4e2a\u7a0b\u5e8f\u88ab\u542f\u52a8\u540e\uff0c\u7cfb\u7edf\u5c06\u521b\u5efa\u4e00\u4e2a\u88ab\u79f0\u4e3a\u201c\u4e3b\u7ebf\u7a0b\uff08main\uff09\u201d\u7ebf\u7a0b\u6765\u6267\u884c\u8be5\u7a0b\u5e8f\u3002\u8fd9\u4e2a\u7ebf\u7a0b\u975e\u5e38\u91cd\u8981\uff0c\u5b83\u8d1f\u8d23\u6b63\u786e\u5730\u5411UI\u63a7\u4ef6\u5206\u53d1\u4e8b\u4ef6\uff0c\u5305\u62ec\u7ed8\u56fe\u4e8b\u4ef6\u3002\u5b83\u540c\u65f6\u8fd8\u4e0eAndroid UI toolkit\u4e2d\u7684\u7ec4\u4ef6\uff08\u5373android.widget\u548candroid.view\u5305\u4e2d\u7684\u7ec4\u4ef6\uff09\u8fdb\u884c\u4ea4\u4e92\u3002\u56e0\u6b64\uff0c\u4e3b\u7ebf\u7a0b\u6709\u65f6\u4e5f\u88ab\u79f0\u4f5c\u4e3aUI\u7ebf\u7a0b\u3002<\/p>\n<p>\u7cfb\u7edf\u4e0d\u4f1a\u4e3a\u6bcf\u4e00\u4e2a\u7ec4\u4ef6\u7684\u5b9e\u4f8b\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u3002\u6240\u6709\u8fd0\u884c\u4e8e\u540c\u4e00\u8fdb\u7a0b\u7684\u7ec4\u4ef6\u90fd\u5728UI\u7ebf\u7a0b\u4e2d\u88ab\u5b9e\u4f8b\u5316\uff0c\u7cfb\u7edf\u5bf9\u5b83\u4eec\u7684\u8c03\u7528\u4e5f\u90fd\u662f\u4ece\u8be5\u7ebf\u7a0b\u4e2d\u5206\u53d1\u3002\u56e0\u6b64\uff0c\u8981\u54cd\u5e94\u7cfb\u7edf\u56de\u9988\u7684\u65b9\u6cd5\uff08\u6bd4\u5982\u56de\u9988\u7528\u6237\u64cd\u4f5c\u7684onKeyDown()\u6216\u662f\u751f\u547d\u5468\u671f\u56de\u9988\u65b9\u6cd5\uff09\u603b\u662f\u8981\u8fd0\u884c\u4e8e\u8fdb\u7a0b\u7684UI\u7ebf\u7a0b\u4e2d\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5f53\u7528\u6237\u70b9\u51fb\u5c4f\u5e55\u4e0a\u7684\u4e00\u4e2a\u6309\u94ae\uff0c\u7a0b\u5e8f\u7684UI\u7ebf\u7a0b\u5c06\u5206\u53d1\u89e6\u6478\u4e8b\u4ef6\u81f3\u63a7\u4ef6\uff0c\u63a7\u4ef6\u5c06\u8bbe\u7f6e\u5176\u70b9\u51fb\u72b6\u6001\u5e76\u5411\u4e8b\u4ef6\u961f\u5217\u53d1\u9001invalidate\u8bf7\u6c42\u3002UI\u7ebf\u7a0b\u4f1a\u5c06\u6b64\u8bf7\u6c42\u51fa\u5217\u5e76\u901a\u77e5\u63a7\u4ef6\u8fdb\u884c\u91cd\u7ed8\u3002<\/p>\n<p>\u5f53\u7a0b\u5e8f\u5728\u54cd\u5e94\u7528\u6237\u4ea4\u4e92\u64cd\u4f5c\u4e2d\u9700\u8981\u5904\u7406\u5bc6\u96c6\u578b\u5de5\u4f5c\u65f6\uff0c\u8fd9\u6837\u7684\u5355\u7ebf\u7a0b\u6a21\u5f0f\u53ef\u80fd\u4f1a\u5728\u6ca1\u6709\u5f88\u597d\u7684\u8bbe\u8ba1\u7a0b\u5e8f\u7684\u60c5\u51b5\u4e0b\u964d\u4f4e\u7a0b\u5e8f\u8868\u73b0\u3002\u7279\u522b\u662f\u5982\u679c\u6240\u6709\u7684\u4efb\u52a1\u90fd\u7531UI\u7ebf\u7a0b\u6267\u884c\uff0c\u7f51\u7edc\u8fde\u63a5\u6216\u662f\u6570\u636e\u8bf7\u6c42\u7b49\u957f\u65f6\u95f4\u64cd\u4f5c\u5c06\u4f1a\u963b\u585e\u6574\u4e2aUI\u3002\u5f53\u7ebf\u7a0b\u88ab\u963b\u585e\uff0c\u4e8b\u4ef6\u5c31\u65e0\u6cd5\u88ab\u5206\u53d1\uff0c\u5305\u62ec\u7ed8\u56fe\u4e8b\u4ef6\u3002\u4ece\u7528\u6237\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u7a0b\u5e8f\u4f3c\u4e4e\u5c31\u505c\u6b62\u54cd\u5e94\u4e86\u3002\u66f4\u7cdf\u7cd5\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u679cUI\u7ebf\u7a0b\u88ab\u963b\u585e\u7684\u65f6\u95f4\u8fc7\u957f\uff08\u76ee\u524d\u6765\u8bf4\u5927\u7ea6\u662f5\u79d2\uff09\u7528\u6237\u5c31\u4f1a\u770b\u5230\u7cdf\u7cd5\u7684\u201c\u7a0b\u5e8f\u6ca1\u6709\u76f8\u5e94\u201d\uff08application not responding,ANR\uff09\u5bf9\u8bdd\u6846\u3002\u7528\u6237\u4e4b\u540e\u5c31\u4f1a\u8003\u8651\u9000\u51fa\u7a0b\u5e8f\uff0c\u751a\u81f3\u4e0d\u6ee1\u5730\u5378\u8f7d\u5b83\u3002<\/p>\n<p>\u53e6\u5916\uff0cAndroid UI toolkit\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u56e0\u6b64\uff0c\u4e0d\u80fd\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u8fdb\u884cUI\u5904\u7406\u2014\u2014\u5fc5\u987b\u5c06\u6240\u6709\u7528\u6237\u4ea4\u4e92\u64cd\u4f5c\u5728UI\u7ebf\u7a0b\u4e2d\u5b9e\u884c\u3002\u4e8e\u662f\uff0c\u5bf9\u4e8eAndroid\u7684\u5355\u7ebf\u7a0b\u6a21\u5f0f\u6709\u4e24\u6761\u89c4\u5219\uff1a<\/p>\n<ol>\n<li>\u4e0d\u8981\u963b\u585eUI\u7ebf\u7a0b<\/li>\n<li>\u4e0d\u8981\u5728UI\u7ebf\u7a0b\u5916\u8bfb\u53d6Android UI toolkit<\/li>\n<\/ol>\n<p><strong>\u5de5\u4f5c\u7ebf\u7a0b<\/strong><\/p>\n<p>\u7531\u4e0a\u9762\u6240\u63cf\u8ff0\u7684\u5355\u7ebf\u7a0b\u6a21\u5f0f\u53ef\u77e5\uff0c\u4e0d\u963b\u585eUI\u7ebf\u7a0b\u5bf9\u4e8e\u7a0b\u5e8fUI\u7684\u54cd\u5e94\u6027\u662f\u5f88\u91cd\u8981\u7684\u3002\u5982\u679c\u4e0d\u5f97\u4e0d\u6267\u884c\u65e0\u6cd5\u7acb\u5373\u5b8c\u6210\u7684\u5de5\u4f5c\uff0c\u5c31\u5fc5\u987b\u786e\u4fdd\u5b83\u4eec\u5904\u4e8e\u4e0d\u540c\u7684\u7ebf\u7a0b\u4e4b\u4e2d\uff08\u201c\u540e\u53f0\u201d\u6216\u201c\u5de5\u4f5c\u201d\u7ebf\u7a0b\uff09\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u70b9\u51fb\u76d1\u542c\u5668\uff08click listener\uff09\u7684\u4ee3\u7801\uff0c\u5b83\u5c06\u4ece\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u4e0b\u8f7d\u4e00\u5f20\u56fe\u7247\u5e76\u5c06\u5176\u663e\u793a\u5728\u4e00\u4e2aImageView\u4e2d\uff1a<\/p>\n<pre><span style=\"color: #000000;\"><span style=\"color: #000080;\">public void <\/span>onClick(<span style=\"color: #800080;\">View <\/span>v) {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 new <\/span><span style=\"color: #800080;\">Thread<\/span>(<span style=\"color: #000080;\">new <\/span><span style=\"color: #800080;\">Runnable<\/span>() {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 \u00a0 \u00a0 public void <\/span>run() {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #800080;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Bitmap <\/span>b = loadImageFromNetwork(<span style=\"color: #008000;\">\"http:\/\/example.com\/image.png\"<\/span>);<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mImageView.setImageBitmap(b);<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 }).start();<\/span>\r\n<span style=\"color: #000000;\">}<\/span><\/pre>\n<p>\u6700\u521d\u8fd9\u770b\u8d77\u6765\u80fd\u5f88\u597d\u7684\u8fd0\u884c\uff0c\u56e0\u4e3a\u5b83\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u7f51\u7edc\u64cd\u4f5c\u3002\u4e0d\u8fc7\uff0c\u5b83\u8fdd\u53cd\u4e86\u5355\u7ebf\u7a0b\u6a21\u5f0f\u7684\u7b2c\u4e8c\u6761\u89c4\u5219\uff1a\u4e0d\u8981\u5728UI\u7ebf\u7a0b\u5916\u8bfb\u53d6Android UI toolkit\u2014\u2014\u8fd9\u4e2a\u8303\u4f8b\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u4fee\u6539\u4e86ImageView\u800c\u4e0d\u662f\u5728UI\u7ebf\u7a0b\u4e2d\u3002\u8fd9\u53ef\u80fd\u5bfc\u81f4\u672a\u5b9a\u4e49\u7684\u4e0d\u88ab\u5e0c\u671b\u7684\u884c\u4e3a\uff0c\u5e76\u4e14\u53ef\u80fd\u8981\u82b1\u8d39\u5f88\u957f\u65f6\u95f4\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0cAndroid\u63d0\u4f9b\u4e86\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u6765\u4ece\u5176\u4ed6\u7ebf\u7a0b\u4e2d\u63a5\u5165UI\u7ebf\u7a0b\u3002\u8fd9\u91cc\u5217\u51fa\u4e86\u6709\u7528\u7684\u4e00\u4e9b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>Activity.runOnUiThread(Runnable)<\/li>\n<li>View.post(Runnable)<\/li>\n<li>View.postDelayed(Runnable, long)<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u53ef\u4ee5\u7528View.post(Runnable)\u65b9\u6cd5\u6765\u89e3\u51b3\u4e0a\u9762\u7684\u95ee\u9898\uff1a<\/p>\n<pre><span style=\"color: #000000;\"><span style=\"color: #000080;\">public void <\/span>onClick(<span style=\"color: #800080;\">View <\/span>v) {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 new <\/span><span style=\"color: #800080;\">Thread<\/span>(<span style=\"color: #000080;\">new <\/span><span style=\"color: #800080;\">Runnable<\/span>() {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 \u00a0 \u00a0 public void <\/span>run() {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 final <\/span><span style=\"color: #800080;\">Bitmap <\/span>bitmap = loadImageFromNetwork(<span style=\"color: #008000;\">\"http:\/\/example.com\/image.png\"<\/span>);<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mImageView.post(<span style=\"color: #000080;\">new <\/span><span style=\"color: #800080;\">Runnable<\/span>() {<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 public void run() {<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mImageView.setImageBitmap(bitmap);<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 });<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 }).start();<\/span>\r\n<span style=\"color: #000000;\">}<\/span><\/pre>\n<p>\u73b0\u5728\u4ee3\u7801\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u4e86\uff1a\u7f51\u7edc\u64cd\u4f5c\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u5b8c\u6210\uff0c\u540c\u65f6ImageView\u662f\u7531UI\u7ebf\u7a0b\u5904\u7406\u7684\u3002<\/p>\n<p>\u4e0d\u8fc7\uff0c\u5f53\u64cd\u4f5c\u7684\u590d\u6742\u6027\u63d0\u5347\u65f6\uff0c\u8fd9\u6837\u7684\u4ee3\u7801\u4f1a\u53d8\u5f97\u5f88\u590d\u6742\u800c\u96be\u4ee5\u7ef4\u62a4\u3002\u8981\u5904\u7406\u66f4\u4e3a\u590d\u6742\u7684\u4e0e\u5de5\u4f5c\u7ebf\u7a0b\u7684\u4ea4\u4e92\uff0c\u5e94\u8be5\u8003\u8651\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u4f7f\u7528Handler\uff0c\u6765\u5904\u7406\u63a5\u6536\u81eaUI\u7ebf\u7a0b\u7684\u6d88\u606f\u3002\u4e0d\u8fc7\uff0c\u6700\u597d\u7684\u89e3\u51b3\u65b9\u6848\u6216\u8bb8\u662f\u7ee7\u627f\u4e00\u4e2aAsyncTask\u7c7b\uff0c\u6765\u7b80\u5316\u5de5\u4f5c\u7ebf\u7a0b\u4e0eUI\u95f4\u4ea4\u4e92\u4efb\u52a1\u7684\u6267\u884c\u3002<\/p>\n<p><strong>\u4f7f\u7528AsyncTask<\/strong><\/p>\n<p>AsyncTask\u5141\u8bb8\u5728\u7528\u6237\u754c\u9762\u4e2d\u6267\u884c\u5f02\u6b65\u5de5\u4f5c\u3002\u5b83\u5728\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u6267\u884c\u963b\u585e\u6027\u64cd\u4f5c\u5e76\u628a\u7ed3\u679c\u53d1\u5e03\u4e8eUI\u7ebf\u7a0b\u800c\u4e0d\u9700\u8981\u5904\u7406\u7ebf\u7a0b\u5173\u7cfb\u3002<\/p>\n<p>\u8981\u4f7f\u7528\u5b83\uff0c\u5fc5\u987b\u7ee7\u627fAsyncTask\u5e76\u4f7f\u7528doInBackground()\u56de\u9988\u65b9\u6cd5\uff08\u5b83\u8fd0\u884c\u4e8e\u540e\u53f0\u7ebf\u7a0b\u6c60\u4e2d\uff09\u3002\u8981\u66f4\u65b0UI\uff0c\u9700\u8981\u4f7f\u7528onPostExecute()\u4ee5\u4f20\u9012\u6765\u81eadoInBackground()\u7684\u7ed3\u679c\u6765\u5b89\u5168\u5730\u66f4\u65b0UI\u3002\u4e4b\u540e\u53ef\u4ee5\u901a\u8fc7\u5728\u8c03\u7528execute()\u6765\u8fd0\u884cUI\u7ebf\u7a0b\u4e2d\u7684\u4efb\u52a1\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u53ef\u4ee5\u50cf\u8fd9\u6837\u4f7f\u7528AsyncTask\u6765\u5b9e\u73b0\u4e0a\u4e00\u4e2a\u8303\u4f8b\uff1a<\/p>\n<pre><span style=\"color: #000000;\"><span style=\"color: #000080;\">public void <\/span>onClick(<span style=\"color: #800080;\">View <\/span>v) {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 new <\/span><span style=\"color: #800080;\">DownloadImageTask<\/span>().execute(<span style=\"color: #008000;\">\"http:\/\/example.com\/image.png\"<\/span>);<\/span>\r\n<span style=\"color: #000000;\">}<\/span>\r\n\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">private class <\/span><span style=\"color: #800080;\">DownloadImageTask <\/span><span style=\"color: #000080;\">extends <\/span><span style=\"color: #800080;\">AsyncTask<\/span>&lt;<span style=\"color: #800080;\">String<\/span>, <span style=\"color: #800080;\">Void<\/span>, <span style=\"color: #800080;\">Bitmap<\/span>&gt; {<\/span>\r\n<span style=\"color: #993300;\">\u00a0 \u00a0 \/** The system calls this to perform work in a worker thread and<\/span>\r\n<span style=\"color: #993300;\">\u00a0 \u00a0 \u00a0 * delivers it the parameters given to AsyncTask.execute() *\/<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 protected <\/span><span style=\"color: #800080;\">Bitmap <\/span>doInBackground(<span style=\"color: #800080;\">String<\/span>... urls) {<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 \u00a0 \u00a0 return <\/span>loadImageFromNetwork(urls[0]);<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 }<\/span>\r\n\r\n<span style=\"color: #993300;\">\u00a0 \u00a0 \/** The system calls this to perform work in the UI thread and delivers<\/span>\r\n<span style=\"color: #993300;\">\u00a0 \u00a0 \u00a0 * the result from doInBackground() *\/<\/span>\r\n<span style=\"color: #000000;\"><span style=\"color: #000080;\">\u00a0 \u00a0 protected void <\/span>onPostExecute(<span style=\"color: #800080;\">Bitmap <\/span>result) {<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 \u00a0 \u00a0 mImageView.setImageBitmap(result);<\/span>\r\n<span style=\"color: #000000;\">\u00a0 \u00a0 }<\/span>\r\n<span style=\"color: #000000;\">}<\/span><\/pre>\n<p>\u73b0\u5728\u4e0d\u4f46UI\u662f\u5b89\u5168\u7684\uff0c\u4ee3\u7801\u4e5f\u53d8\u5f97\u66f4\u7b80\u5355\u4e86\uff0c\u56e0\u4e3a\u5de5\u4f5c\u88ab\u5206\u6210\u4e86\u9700\u8981\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u5b8c\u6210\u7684\u90e8\u5206\u548c\u5e94\u5f53\u5728UI\u7ebf\u7a0b\u4e2d\u5b8c\u6210\u7684\u90e8\u5206\u3002<\/p>\n<p>\u5e94\u8be5\u9605\u8bfbAsyncTask\u7684\u53c2\u8003\u6587\u6863\u6765\u4e86\u89e3\u5173\u4e8e\u5982\u4f55\u4f7f\u7528\u8fd9\u4e2a\u7c7b\u7684\u5b8c\u6574\u4fe1\u606f\uff0c\u4e0d\u8fc7\u8fd9\u91cc\u6709\u5173\u4e8e\u5b83\u5de5\u4f5c\u65b9\u5f0f\u7684\u7b80\u4ecb\uff1a<\/p>\n<ul>\n<li>\u53ef\u4ee5\u4f7f\u7528generic\u6765\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\uff0c\u8fdb\u5ea6\u503c\uff08progress value\uff09\u548c\u4efb\u52a1\u7684\u6700\u7ec8\u503c<\/li>\n<li>doInBackground()\u65b9\u6cd5\u81ea\u52a8\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u6267\u884c<\/li>\n<li>onPreExecute()\u3001onPostExecute()\u548conProgressUpdate()\u90fd\u5728UI\u7ebf\u7a0b\u4e2d<\/li>\n<li>onPreExecute()\u6240\u8fd4\u56de\u7684\u503c\u88ab\u53d1\u9001\u81f3onPostExecute()<\/li>\n<li>\u53ef\u4ee5\u5728onInBackground()\u6267\u884c\u7684\u4efb\u610f\u65f6\u523b\u8c03\u7528publishProgress()\u4ee5\u5728UI\u7ebf\u7a0b\u4e2d\u6267\u884conProgressUpdate()<\/li>\n<li>\u53ef\u4ee5\u5728\u4efb\u4e00\u65f6\u523b\uff0c\u5728\u4efb\u610f\u7ebf\u7a0b\u4e2d\uff0c\u53d6\u6d88\u4efb\u52a1<\/li>\n<\/ul>\n<p style=\"padding-left: 30px;\"><strong>\u6ce8\u610f<\/strong>\uff1a\u5728\u4f7f\u7528\u5de5\u4f5c\u7ebf\u7a0b\u65f6\u53ef\u80fd\u9047\u5230\u7684\u53e6\u4e00\u4e2a\u95ee\u9898\u662f\u7531\u4e8e\u8fd0\u884c\u914d\u7f6e\u7684\u6539\u53d8\u800c\u6d3b\u52a8\u81ea\u52a8\u91cd\u542f\uff08\u6bd4\u5982\u7528\u6237\u6539\u53d8\u4e86\u5c4f\u5e55\u65b9\u5411\uff09\uff0c\u8fd9\u53ef\u80fd\u4f1a\u9500\u6bc1\u8be5\u5de5\u4f5c\u7ebf\u7a0b\u3002\u8981\u9632\u6b62\u4efb\u52a1\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u91cd\u542f\uff0c\u5e76\u5728\u6d3b\u52a8\u88ab\u9500\u6bc1\u65f6\u6b63\u786e\u5730\u53d6\u6d88\u4efb\u52a1\uff0c\u8bf7\u53c2\u89c1Shelves\u8303\u4f8b\u7a0b\u5e8f\u7684\u6e90\u4ee3\u7801\u3002<\/p>\n<p><strong>\u7ebf\u7a0b\u5b89\u5168\u65b9\u6cd5\uff08Thread-safe methods\uff09<\/strong><\/p>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6240\u4f7f\u7528\u7684\u65b9\u6cd5\u53ef\u80fd\u4f1a\u88ab\u4e0d\u6b62\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528\uff0c\u56e0\u6b64\u8fd9\u4e9b\u65b9\u6cd5\u5fc5\u987b\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n<p>\u5bf9\u4e8e\u53ef\u4ee5\u88ab\u8fdc\u7a0b\u8c03\u7528\u7684\u65b9\u6cd5\u2014\u2014\u6bd4\u5982\u5728\u7ed1\u5b9a\u7684\u670d\u52a1\u4e2d\u7684\u90a3\u4e9b\u65b9\u6cd5\u2014\u2014\u6765\u8bf4\uff0c\u8fd9\u662f\u975e\u5e38\u5fc5\u8981\u7684\u3002\u5f53\u5728\u4e00\u4e2aIBinder\u6240\u8fd0\u884c\u7684\u8fdb\u7a0b\u4e2d\u8c03\u7528\u4e00\u4e2a\u5728\u8be5IBinder\u4e2d\u4f7f\u7528\u7684\u65b9\u6cd5\u65f6\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u5728\u8c03\u7528\u8005\u7684\u7ebf\u7a0b\u4e2d\u88ab\u6267\u884c\u3002\u7136\u800c\uff0c\u5982\u679c\u8fd9\u4e2a\u8c03\u7528\u662f\u5728\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u7684\uff0c\u90a3\u4e48\u8fd9\u4e2a\u65b9\u6cd5\u5c06\u5728\u4ece\u7ebf\u7a0b\u6c60\u4e2d\u9009\u62e9\u7684\u4e00\u4e2a\u7cfb\u7edf\u4fdd\u7559\u7684\u4e0eIBinder\u5904\u4e8e\u540c\u4e00\u8fdb\u7a0b\u7684\u7ebf\u7a0b\u4e2d\u6267\u884c\uff08\u5e76\u4e0d\u662f\u5728\u8fdb\u7a0b\u7684UI\u7ebf\u7a0b\u4e2d\u88ab\u6267\u884c\uff09\u3002\u4f8b\u5982\uff0c\u5c3d\u7ba1\u4e00\u4e2a\u670d\u52a1\u7684onBind()\u65b9\u6cd5\u4f1a\u88ab\u5728\u670d\u52a1\u7684\u8fdb\u7a0b\u7684UI\u7ebf\u7a0b\u4e2d\u8c03\u7528\uff0c\u5bf9\u8c61\u4e2donBind()\u6240\u8fd4\u56de\u7684\u65b9\u6cd5\uff08\u6bd4\u5982\uff0c\u4f7f\u7528\u4e86RPC\u65b9\u6cd5\u7684\u4e00\u4e2a\u5b50\u7c7b\uff09\u4f1a\u5728\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u4e2d\u88ab\u8c03\u7528\u3002\u56e0\u4e3a\u4e00\u4e2a\u670d\u52a1\u6709\u4e0d\u6b62\u4e00\u4e2a\u5ba2\u6237\u7aef\uff0c\u6240\u4ee5\u591a\u4e2a\u6c60\u7ebf\u7a0b\u53ef\u4ee5\u540c\u65f6\u548c\u540c\u4e00\u4e2aIBinder\u65b9\u6cd5\u76f8\u5173\u8054\u3002\u56e0\u6b64IBinder()\u65b9\u6cd5\u5fc5\u987b\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n<p><strong>\u7ebf\u7a0b\u95f4\u901a\u4fe1\uff08Interprocess 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title=\"\u77e5\u8bc6\u5171\u4eab \u7f72\u540d-\u975e\u5546\u4e1a\u6027\u4f7f\u7528-\u7981\u6b62\u6f14\u7ece 3.0 Unported\u8bb8\u53ef\u534f\u8bae\" rel=\"license\" href=\"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0\/\" target=\"_blank\">\u77e5\u8bc6\u5171\u4eab \u7f72\u540d-\u975e\u5546\u4e1a\u6027\u4f7f\u7528-\u7981\u6b62\u6f14\u7ece 3.0 Unported\u8bb8\u53ef\u534f\u8bae<\/a>\u8fdb\u884c\u8bb8\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4e00\u4e2a\u7a0b\u5e8f\u7684\u4ec5\u6709\u7684\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7ec4\u4ef6\u542f\u52a8\u65f6\uff08\u9664\u6b64\u4e4b\u5916\u6ca1\u6709\u5176\u4ed6\u7ec4\u4ef6\u5728\u8fd0\u884c\uff09\uff0cAndroid\u7cfb\u7edf\u4f1a\u4e3a\u8be5\u7a0b\u5e8f\u5f00\u542f\u4e00\u4e2a\u5305 &hellip; <a href=\"http:\/\/leybreeze.com\/blog\/?p=532\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201c\u8fdb\u7a0b\u548c\u7ebf\u7a0b\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,10],"tags":[5],"_links":{"self":[{"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/532"}],"collection":[{"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=532"}],"version-history":[{"count":11,"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/532\/revisions"}],"predecessor-version":[{"id":535,"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/532\/revisions\/535"}],"wp:attachment":[{"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/leybreeze.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}