{"id":255445,"date":"2016-03-24T23:58:07","date_gmt":"2016-03-24T15:58:07","guid":{"rendered":"http:\/\/blog.zhenglei.net\/?p=255445"},"modified":"2016-03-24T23:58:07","modified_gmt":"2016-03-24T15:58:07","slug":"%e8%bd%ac%ef%bc%9aandroid%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/blog.zhenglei.net\/?p=255445","title":{"rendered":"\u8f6c\uff1aAndroid\u6027\u80fd\u4f18\u5316"},"content":{"rendered":"<p><a href=\"http:\/\/rayleeya.iteye.com\/blog\/1961005\">http:\/\/rayleeya.iteye.com\/blog\/1961005<\/a><\/p>\n<p>&nbsp;<\/p>\n<h1><strong>\u6587\u7ae0\u90fd\u4e3a\u539f\u521b\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\uff0c\u672a\u7ecf\u5141\u8bb8\u800c\u76d7\u7528\u8005\u8ffd\u7a76\u6cd5\u5f8b\u8d23\u4efb\u3002\u00a0<\/strong><strong>\u00a0<\/strong><\/h1>\n<p><strong>\u7f16\u5199\u8005\uff1a\u674e\u6587\u680b<\/strong><\/p>\n<h1>Android\u6027\u80fd\u4f18\u5316<\/h1>\n<p>\u6839\u636eAndroid\u7684\u5c42\u6b21\u7ed3\u6784\uff0c\u6027\u80fd\u4f18\u5316\u4e5f\u662f\u5206\u5c42\u6b21\u8fdb\u884c\u7684\uff0c\u672c\u6587\u4f1a\u5206\u522b\u5bf9Application\u3001Framework\u3001Native\u3001Kernel\u5404\u5c42\u505a\u603b\u7ed3\uff0c\u6bcf\u5c42\u4e3b\u8981\u4f1a\u4ece\u6027\u80fd\u4f18\u5316\u7684\u57fa\u672c\u601d\u60f3\u3001\u4f18\u5316\u6280\u5de7\u3001\u4f18\u5316\u5de5\u5177\u51e0\u4e2a\u65b9\u9762\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n<h3>\u7b2c\u4e00\u7ae0Android\u5e94\u7528\u6027\u80fd\u4f18\u5316\uff08\u6982\u8ff0\uff09<\/h3>\n<p>\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u95ee\u9898\u662f\u6700\u660e\u663e\u3001\u6700\u5bb9\u6613\u4f53\u73b0\u7684\u4e00\u7c7b\uff0c\u8868\u73b0\u5f62\u5f0f\u4e5f\u4e94\u82b1\u516b\u95e8\uff0c\u4e3e\u51e0\u4e2a\u4f8b\u5b50:<\/p>\n<ul>\n<li>\u5e94\u7528\u7a0b\u5e8f\u7b2c\u4e00\u6b21\u542f\u52a8\u901f\u5ea6\u6162\uff0c\u6216\u8005\u8fdb\u5165\u67d0\u4e00\u754c\u9762\u901f\u5ea6\u6162\uff1b<\/li>\n<li>\u542f\u52a8\u67d0\u4e00\u6709\u52a8\u753b\u6548\u679c\u7684\u754c\u9762\uff0c\u52a8\u753b\u6267\u884c\u8fc7\u7a0b\u4e0d\u6d41\u7545\uff0c\u6216\u8005\u52a8\u753b\u6267\u884c\u524d\u5361\u987f\u65f6\u95f4\u957f\uff1b<\/li>\n<li>ListView\u5217\u8868\u6ed1\u52a8\u8fc7\u7a0b\u4e2d\u5361\u987f\uff0c\u4e0d\u6d41\u7545\uff1b<\/li>\n<li>\u5e94\u7528\u7a0b\u5e8f\u81ea\u5b9a\u4e49\u7684\u67d0\u7279\u5b9a\u754c\u9762\u6267\u884c\u901f\u5ea6\u6162\uff0c\u4f8b\u5982Launcher\u5e94\u7528\u684c\u9762\u5de6\u53f3\u6ed1\u52a8\u6548\u679c\u4e0d\u5e73\u6ed1\uff1b<\/li>\n<li>\u54cd\u5e94\u67d0\u4e00\u7528\u6237\u4e8b\u4ef6\u65f6\u957f\u65f6\u95f4\u65e0\u54cd\u5e94\uff08ANR\uff09\uff1b<\/li>\n<li>\u64cd\u4f5c\u6570\u636e\u5e93\u65f6\uff0c\u6267\u884c\u5927\u91cf\u6570\u636e\u7684\u589e\u5220\u6539\u67e5\u64cd\u4f5c\uff0c\u6267\u884c\u901f\u5ea6\u6162\uff1b<\/li>\n<li>\u5e94\u7528\u957f\u65f6\u95f4\u8fd0\u884c\u540e\uff0c\u968f\u673a\u51fa\u73b0\u5361\u987f\u73b0\u8c61\uff1b<\/li>\n<\/ul>\n<p>\u9664\u4e86\u8868\u73b0\u5f62\u5f0f\u590d\u6742\uff0c\u539f\u56e0\u4e5f\u5f88\u590d\u6742\u3002\u4ee5\u4e0a\u7684\u95ee\u9898\u7684\u539f\u56e0\u53ef\u80fd\u4e0d\u53ea\u4e00\u4e2a\uff0c\u5e76\u4e14\u5f88\u591a\u60c5\u51b5\u4e0b\u5e76\u4e0d\u662f\u5e94\u7528\u672c\u8eab\u7684\u95ee\u9898\uff0c\u4e5f\u6709\u53ef\u80fd\u662f\u7cfb\u7edf\u5176\u4ed6\u5c42\u6b21\u6709\u95ee\u9898\uff0c\u53ea\u4e0d\u8fc7\u4f53\u73b0\u5728 \u5e94\u7528\u5c42\u3002\u6240\u4ee5\u8bf4\u5e94\u7528\u5c42\u603b\u662f\u9996\u5f53\u5176\u51b2\uff0c\u5f00\u53d1\u4eba\u5458\u5728\u5904\u7406\u6027\u80fd\u95ee\u9898\u65f6\uff0c\u9700\u8981\u505a\u7684\u7b2c\u4e00\u4ef6\u4e8b\u60c5\u5c31\u662f\u5224\u65ad\u662f\u5426\u662f\u5e94\u7528\u81ea\u8eab\u5f15\u8d77\u7684\u6027\u80fd\u95ee\u9898\uff0c\u7136\u540e\u518d\u5bf9\u75c7\u4e0b\u836f\uff1b\u4f46\u6709\u4e9b\u65f6\u5019\u5e94 \u7528\u672c\u8eab\u903b\u8f91\u6b63\u5e38\uff0c\u660e\u663e\u662f\u7cfb\u7edf\u7684\u786c\u4ef6\u914d\u7f6e\u4e0d\u8db3\u5f15\u8d77\uff0c\u6b64\u65f6\u5c31\u8981\u6839\u636e\u4ea7\u54c1\u6216\u9879\u76ee\u9700\u6c42\uff0c\u91c7\u53d6\u4e00\u4e9b\u66f4\u52a0\u6fc0\u8fdb\u7684\u65b9\u5f0f\u4f18\u5316\u6027\u80fd\uff0c\u4ee5\u5f25\u8865\u786c\u4ef6\u914d\u7f6e\u7684\u4e0d\u8db3\u3002<\/p>\n<p>\u4ee5\u4e0b\u4ece\u51e0\u4e2a\u4e0d\u540c\u7684\u89d2\u5ea6\u603b\u7ed3\u4e00\u4e0b\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u4f18\u5316\u7684\u4e00\u4e9b\u65b9\u6cd5\u3002<\/p>\n<h5>\u4e00\u3001\u57fa\u672c\u601d\u60f3<\/h5>\n<p>\u5e94\u7528\u5c42\u7684\u6027\u80fd\u4f18\u5316\u901a\u5e38\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u8003\u8651\uff1a<\/p>\n<ol>\n<li>\u4e86\u89e3\u7f16\u7a0b\u8bed\u8a00\u7684\u7f16\u8bd1\u539f\u7406\uff0c\u4f7f\u7528\u9ad8\u6548\u7f16\u7801\u65b9\u5f0f\u4ece\u8bed\u6cd5\u4e0a\u63d0\u9ad8\u7a0b\u5e8f\u6027\u80fd\uff1b<\/li>\n<li>\u91c7\u7528\u5408\u7406\u7684\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u63d0\u9ad8\u7a0b\u5e8f\u6027\u80fd\uff0c\u8fd9\u5f80\u5f80\u662f\u51b3\u5b9a\u7a0b\u5e8f\u6027\u80fd\u7684\u5173\u952e\uff1b<\/li>\n<li>\u91cd\u89c6\u754c\u9762\u5e03\u5c40\u4f18\u5316\uff1b<\/li>\n<li>\u91c7\u7528\u591a\u7ebf\u7a0b\u3001\u7f13\u5b58\u6570\u636e\u3001\u5ef6\u8fdf\u52a0\u8f7d\u3001\u63d0\u524d\u52a0\u8f7d\u7b49\u624b\u6bb5\uff0c\u89e3\u51b3\u4e25\u91cd\u7684\u6027\u80fd\u74f6\u9888\uff1b<\/li>\n<li>\u5408\u7406\u914d\u7f6e\u865a\u62df\u673a\u5806\u5185\u5b58\u4f7f\u7528\u4e0a\u9650\u548c\u4f7f\u7528\u7387\uff0c\u51cf\u5c11\u5783\u573e\u56de\u6536\u9891\u7387\uff1b<\/li>\n<li>\u5408\u7406\u4f7f\u7528native\u4ee3\u7801\uff1b<\/li>\n<li>\u5408\u7406\u914d\u7f6e\u6570\u636e\u5e93\u7f13\u5b58\u7c7b\u578b\u548c\u4f18\u5316SQL\u8bed\u53e5\u52a0\u5feb\u8bfb\u53d6\u901f\u5ea6\uff0c\u4f7f\u7528\u4e8b\u52a1\u52a0\u5feb\u5199\u5165\u901f\u5ea6\uff1b<\/li>\n<li>\u4f7f\u7528\u5de5\u5177\u5206\u6790\u6027\u80fd\u95ee\u9898\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9888\uff1b<\/li>\n<\/ol>\n<p>\u5f53\u7136\u80af\u5b9a\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u7684\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\uff0c\u6b64\u5904\u4ec5\u5217\u51fa\u4e00\u4e9b\u7ecf\u5e38\u4f1a\u7528\u5230\u7684\u65b9\u6cd5\u3002\u9650\u4e8e\u7bc7\u5e45\uff0c\u4ee5\u4e0b\u4f1a\u5bf9\u5176\u4e2d\u4e00\u90e8\u5206\u5185\u5bb9\u505a\u4ecb\u7ecd\uff0c\u5e0c\u671b\u80fd\u591f\u5bf9\u5927\u5bb6\u505a\u6027\u80fd\u4f18\u5316\u5de5\u4f5c\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<h5>\u4e8c\u3001\u7f16\u7a0b\u6280\u5de7<\/h5>\n<p><strong>\uff08\u4e00\uff09Performance Tips (For Java)<\/strong><\/p>\n<p>Google\u5b98\u7f51\u4e0a\u6709\u4e00\u4e9b\u5173\u4e8e\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u63d0\u5347\u7684\u6280\u5de7\uff0c\u4e4b\u524d\u516c\u53f8\u5185\u4e5f\u6709\u5f88\u591a\u603b\u7ed3\u63d0\u5230\u8fc7\uff0c\u5728\u6b64\u7b80\u5355\u7f57\u5217\u4e00\u4e0b\uff0c\u8be6\u7ec6\u5185\u5bb9\u53ef\u4ee5\u4ece\u5b98\u7f51\u83b7\u53d6\u3002<\/p>\n<p><a href=\"http:\/\/developer.android.com\/training\/articles\/perf-tips.html\">http:\/\/developer.android.com\/training\/articles\/perf-tips.html<\/a><\/p>\n<p>\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u6587\u7ae0\u5217\u51fa\u7684\u4f18\u5316\u6280\u5de7\u4e3b\u8981\u662f\u4e00\u4e9b\u5fae\u5c0f\u7684\u6027\u80fd\u63d0\u5347\uff0c\u51b3\u5b9a\u7a0b\u5e8f\u6574\u4f53\u6027\u80fd\u7684\u4ecd\u7136\u53d6\u51b3\u4e8e\u7a0b\u5e8f\u7684\u4e1a\u52a1\u903b\u8f91\u8bbe\u8ba1\u3001\u4ee3\u7801\u7684\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u3002\u7814\u53d1\u4eba\u5458\u9700\u8981\u5c06\u8fd9\u4e9b\u4f18\u5316\u6280\u5de7\u5e94\u7528\u5230\u5e73\u65f6\u7684\u7f16\u7801\u8fc7\u7a0b\u4e2d\uff0c\u79ef\u5c11\u6210\u591a\uff0c\u4e5f\u4f1a\u5bf9\u6027\u80fd\u6709\u5f88\u5927\u7684\u5f71\u54cd\u3002<\/p>\n<p>\u5199\u51fa\u9ad8\u6548\u7684\u4ee3\u7801\u9700\u8981\u9075\u5faa\u4e24\u6761\u539f\u5219\uff1a<\/p>\n<ul>\n<li>\u4e0d\u6267\u884c\u4e0d\u5fc5\u8981\u7684\u64cd\u4f5c\uff1b<\/li>\n<li>\u4e0d\u5206\u914d\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\uff1b<\/li>\n<\/ul>\n<p>\u4e24\u6761\u539f\u5219\u5206\u522b\u9488\u5bf9CPU\u548c\u5185\u5b58\uff0c\u5b8c\u6210\u5fc5\u8981\u64cd\u4f5c\u7684\u524d\u63d0\u4e0b\u5c3d\u53ef\u80fd\u7684\u8282\u7701CPU\u548c\u5185\u5b58\u8d44\u6e90\uff0c\u81ea\u7136\u6267\u884c\u6548\u7387\u8981\u9ad8\u3002\u5355\u7eaf\u8fd9\u6837\u8bf4\u542c\u8d77\u6765\u5f88\u865a\uff0c\u6bd5\u7adf\u6ca1\u6709\u4e00\u4e2a\u7edf\u4e00\u7684\u6807\u51c6\u5224\u65ad\u4ec0\u4e48\u662f\u5fc5\u8981\u548c\u4e0d\u5fc5\u8981\u7684\uff0c\u9700\u8981\u7ed3\u5408\u5177\u4f53\u60c5\u51b5\u5177\u4f53\u5206\u6790\u4e86\u3002<\/p>\n<ol>\n<li><strong> \u907f\u514d\u521b\u5efa\u4e0d\u5fc5\u8981\u7684\u5bf9\u8c61<\/strong><\/li>\n<\/ol>\n<p>\u521b\u5efa\u592a\u591a\u7684\u5bf9\u8c61\u4f1a\u9020\u6210\u6027\u80fd\u4f4e\u4e0b\uff0c\u8fd9\u8c01\u90fd\u77e5\u9053\uff0c\u53ef\u662f\u4e3a\u4ec0\u4e48\u5462\uff1f\u9996\u5148\u5206\u914d\u5185\u5b58\u672c\u8eab\u9700\u8981\u65f6\u95f4\uff0c\u5176\u6b21\u865a\u62df\u673a\u8fd0\u884c\u65f6\u5806\u5185\u5b58\u4f7f\u7528\u91cf\u662f\u6709\u4e0a\u9650\u7684\uff0c\u5f53\u4f7f\u7528\u91cf\u5230\u8fbe\u4e00\u5b9a\u7a0b\u5ea6 \u65f6\u4f1a\u89e6\u53d1\u5783\u573e\u56de\u6536\uff0c\u5783\u573e\u56de\u6536\u4f1a\u4f7f\u5f97\u7ebf\u7a0b\u751a\u81f3\u662f\u6574\u4e2a\u8fdb\u7a0b\u6682\u505c\u8fd0\u884c\u3002\u53ef\u60f3\u800c\u77e5\uff0c\u5982\u679c\u6709\u5bf9\u8c61\u9891\u7e41\u7684\u521b\u5efa\u548c\u9500\u6bc1\uff0c\u6216\u8005\u5185\u5b58\u4f7f\u7528\u7387\u5f88\u9ad8\uff0c\u5c31\u4f1a\u9020\u6210\u5e94\u7528\u7a0b\u5e8f\u4e25\u91cd\u5361\u987f\u3002<\/p>\n<p><strong>\u00a0 \u00a0\u00a0\u00a02.\u5408\u7406\u4f7f\u7528static\u6210\u5458<\/strong><\/p>\n<p>\u4e3b\u8981\u6709\u4e09\u70b9\u9700\u8981\u638c\u63e1\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u4e00\u4e2a\u65b9\u6cd5\u4e0d\u9700\u8981\u64cd\u4f5c\u8fd0\u884c\u65f6\u7684\u52a8\u6001\u53d8\u91cf\u548c\u65b9\u6cd5\uff0c\u90a3\u4e48\u53ef\u4ee5\u5c06\u65b9\u6cd5\u8bbe\u7f6e\u4e3astatic\u7684\u3002<\/li>\n<li>\u5e38\u91cf\u5b57\u6bb5\u8981\u58f0\u660e\u4e3a\u201cstatic final\u201d\uff0c\u56e0\u4e3a\u8fd9\u6837\u5e38\u91cf\u4f1a\u88ab\u5b58\u653e\u5728dex\u6587\u4ef6\u7684\u9759\u6001\u5b57\u6bb5\u521d\u59cb\u5316\u5668\u4e2d\u88ab\u76f4\u63a5\u8bbf\u95ee\uff0c\u5426\u5219\u5728\u8fd0\u884c\u65f6\u9700\u8981\u901a\u8fc7\u7f16\u8bd1\u65f6\u81ea\u52a8\u751f\u6210\u7684\u4e00\u4e9b\u51fd\u6570\u6765\u521d\u59cb\u5316\u3002\u6b64\u89c4\u5219\u53ea\u5bf9\u57fa\u672c\u7c7b\u578b\u548cString\u7c7b\u578b\u6709\u6548\u3002<\/li>\n<li>\u4e0d\u8981\u5c06\u89c6\u56fe\u63a7\u4ef6\u58f0\u660e\u4e3astatic\uff0c\u56e0\u4e3aView\u5bf9\u8c61\u4f1a\u5f15\u7528Activity\u5bf9\u8c61\uff0c\u5f53Activity\u9000\u51fa\u65f6\u5176\u5bf9\u8c61\u672c\u8eab\u65e0\u6cd5\u88ab\u9500\u6bc1\uff0c\u4f1a\u9020\u6210\u5185\u5b58\u6ea2\u51fa\u3002<\/li>\n<\/ul>\n<ol start=\"3\">\n<li>\u00a0 \u00a0 \u00a0<strong> \u907f\u514d\u5185\u90e8\u7684Getters\/Setters<\/strong><\/li>\n<\/ol>\n<p>\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u4e2d\uff0c\u5b57\u6bb5\u8bbf\u95ee\u4f7f\u7528Getters\/Setters\u901a\u5e38\u662f\u4e00\u4e2a\u597d\u7684\u539f\u5219\uff0c\u4f46\u662f\u5728Android\u5f00\u53d1\u4e2d\u9650\u4e8e\u786c\u4ef6\u6761\u4ef6\uff0c\u9664\u975e\u5b57\u6bb5\u9700\u8981\u88ab\u516c\u5f00\u8bbf \u95ee\uff0c\u5426\u5219\u5982\u679c\u53ea\u662f\u6709\u9650\u8303\u56f4\u5185\u7684\u5185\u90e8\u8bbf\u95ee\uff08\u4f8b\u5982\u5305\u5185\u8bbf\u95ee\uff09\u5219\u4e0d\u5efa\u8bae\u4f7f\u7528Getters\/Setters\u3002\u5728\u5f00\u542fJIT\u65f6\uff0c\u76f4\u63a5\u8bbf\u95ee\u7684\u901f\u5ea6\u6bd4\u95f4\u63a5\u8bbf\u95ee\u8981\u5feb7 \u500d\u3002<\/p>\n<ol start=\"4\">\n<li>\u00a0 \u00a0 \u00a0<strong> 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layout\u3001draw\u7684\u64cd\u4f5c\uff0c\u6bcf\u4e00\u6b65\u7684\u6267\u884c\u65f6\u95f4\u90fd\u4f1a\u53d7\u5230\u5e03\u5c40\u672c\u8eab\u7684\u5f71\u54cd\u3002\u800c\u754c\u9762\u7684\u6700\u7ec8\u663e\u793a\u662f\u6240\u6709\u8fd9\u4e9b\u64cd\u4f5c\u5b8c\u6210\u540e\u624d\u5b9e\u73b0\u7684\uff0c\u6240\u4ee5\u5982\u679c\u5e03\u5c40\u8d28\u91cf\u5dee\uff0c\u4f1a\u589e\u52a0\u6bcf \u4e00\u6b65\u64cd\u4f5c\u7684\u65f6\u95f4\u6210\u672c\uff0c\u6700\u7ec8\u663e\u793a\u65f6\u95f4\u5c31\u4f1a\u6bd4\u8f83\u957f\u3002<\/li>\n<\/ul>\n<p>\u90a3\u4e48\u5e03\u5c40\u5982\u4f55\u4f18\u5316\uff1f\u603b\u7ed3\u5982\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ol>\n<li><strong> 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start=\"2\">\n<li><strong> \u4f7f\u7528Lint\u5206\u6790\u5e03\u5c40<\/strong><\/li>\n<\/ol>\n<p>Lint\u662fSDK\u4e2dtools\u76ee\u5f55\u4e0b\u7684\u5de5\u5177\uff0cADT\u4e2d\u96c6\u6210\u4e86Lint\u7684\u53ef\u89c6\u5316\u63a7\u5236\u754c\u9762\u3002\u7528Lint\u626b\u63cf\u5e94\u7528\u7a0b\u5e8f\uff0c\u5b83\u4f1a\u4ece\u5f88\u591a\u65b9\u9762\u5bf9\u5e94\u7528\u8fdb\u884c\u5206\u6790\uff0c\u5e76\u63d0\u793a\u90a3\u4e9b\u53ef\u80fd\u6709\u7f3a\u9677\u7684\u5730\u65b9\uff0c\u5176\u4e2d\u5c31\u5305\u542b\u4e0e\u6027\u80fd\u76f8\u5173\u7684\u5185\u5bb9\u3002\u4f60\u53ef\u4ee5\u5728Google\u5b98\u7f51\u4e0a\u4e86\u89e3\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n<p><a href=\"http:\/\/developer.android.com\/tools\/debugging\/improving-w-lint.html\">http:\/\/developer.android.com\/tools\/debugging\/improving-w-lint.html<\/a><\/p>\n<p><a href=\"http:\/\/developer.android.com\/tools\/help\/lint.html\">http:\/\/developer.android.com\/tools\/help\/lint.html<\/a><\/p>\n<ol start=\"3\">\n<li><strong> \u4f7f\u7528HierarchyViewer\u5206\u6790\u5e03\u5c40<\/strong><\/li>\n<\/ol>\n<p>HierarchyViewer\uff08\u4ee5\u4e0b\u7b80\u79f0HV\uff09\u4e5f\u662fSDK\u4e2dtools\u76ee\u5f55\u4e0b\u7684\u5de5\u5177\uff0cADT\u4e2d\u4e5f\u96c6\u6210\u4e86HV\u7684\u53ef\u89c6\u5316\u63a7\u5236\u754c\u9762\u3002\u53ef\u4ee5\u4f7f\u7528HV\u67e5\u770b\u5f53\u524d\u754c\u9762\u7684\u5e03\u5c40\uff0c\u5b83\u80fd\u63d0\u4f9b\u5f88\u591a\u4fe1\u606f\uff0c\u5176\u4e2d\u6709\u4e24\u4e2a\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5206\u6790\u6027\u80fd\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0HV\u7684\u6811\u89c6\u56fe\u5c55\u73b0\u4e86\u89c6\u56fe\u63a7\u4ef6\u7684\u76f8\u4e92\u5173\u7cfb\uff0c\u53ef\u4ee5\u7528\u6765\u68c0\u67e5\u662f\u5426\u6709\u7b2c1\u70b9\u4e2d\u63d0\u5230\u7684\u60c5\u51b5\u3002<\/li>\n<li>\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0\u6811\u89c6\u56fe\u4e2d\u53ef\u4ee5\u663e\u793a\u6bcf\u4e2a\u8282\u70b9measure\u3001layout\u3001draw\u7684\u65f6\u95f4\uff0c\u5e76\u4e14\u6bcf\u4e00\u9879\u7528\u4e00\u4e2a\u5706\u70b9\u8868\u793a\u5176\u8017\u65f6\u662f\u5426\u6b63\u5e38\uff0c\u6bcf\u4e2a\u5706\u70b9\u5206\u522b\u7528\u7eff\u8272\u3001\u9ec4\u8272\u3001\u7ea2 \u8272\u8868\u793a\u8017\u65f6\u6b63\u5e38\u3001\u8b66\u544a\u3001\u5371\u9669\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u627e\u5230\u6709\u6027\u80fd\u74f6\u9888\u4e86\u3002\u5982\u679c\u6811\u89c6\u56fe\u4e2d\u6ca1\u6709\u663e\u793a\u8fd9\u4e9b\u65f6\u95f4\uff0c\u4f60\u53ef\u4ee5\u70b9\u51fb\u201cObtain layout times for tree rooted at selected node\u201d\u6309\u94ae\u5237\u65b0\u754c\u9762\u663e\u793a\u3002<\/li>\n<\/ul>\n<p><a href=\"http:\/\/developer.android.com\/tools\/debugging\/debugging-ui.html\">http:\/\/developer.android.com\/tools\/debugging\/debugging-ui.html<\/a><\/p>\n<ol start=\"4\">\n<li>\u00a0 \u00a0 \u00a0<strong> \u4f7f\u7528ViewStub\u5ef6\u8fdf\u52a0\u8f7d\u89c6\u56fe<\/strong><\/li>\n<\/ol>\n<p>ViewStub\u662f\u4e00\u4e2a\u6ca1\u6709\u5c3a\u5bf8\u5927\u5c0f\u5e76\u4e14\u4e0d\u4f1a\u5728\u5e03\u5c40\u4e2d\u5d4c\u5957\u6216\u6e32\u67d3\u4efb\u4f55\u4e1c\u897f\u7684\u8f7b\u91cf\u7ea7\u7684\u89c6\u56fe\u3002\u5982\u679c\u754c\u9762\u4e2d\u6709\u4e00\u90e8\u5206\u89c6\u56fe\u63a7\u4ef6\u4e0d\u9700\u8981\u7acb\u5373\u663e\u793a\uff0c\u5219\u53ef\u4ee5\u5c06\u5176\u5199\u5230 \u4e00\u4e2a\u5355\u72ec\u7684layout\u6587\u4ef6\u4e2d\uff0c\u7528ViewStub\u6807\u7b7e\u4ee3\u66ff\uff0c\u5f53\u8981\u771f\u6b63\u663e\u793a\u8fd9\u90e8\u5206\u5185\u5bb9\u65f6\u518d\u901a\u8fc7ViewStub\u5c06\u89c6\u56fe\u52a0\u8f7d\u8fdb\u6765\u3002<\/p>\n<p><a href=\"http:\/\/developer.android.com\/training\/improving-layouts\/loading-ondemand.html\">http:\/\/developer.android.com\/training\/improving-layouts\/loading-ondemand.html<\/a><\/p>\n<h5>\u4e09\u3001\u5de5\u5177\u4f7f\u7528<\/h5>\n<p>\u9075\u5faa\u597d\u7684\u7f16\u7801\u4e60\u60ef\u53ef\u4ee5\u8ba9\u7a0b\u5e8f\u6267\u884c\u66f4\u6709\u6548\u7387\uff0c\u4f46\u662f\u5b9e\u9645\u8fd0\u884c\u65f6\u4ecd\u7136\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u6027\u80fd\u95ee\u9898\u3002\u5e78\u597d\u6709\u5f88\u591a\u5f3a\u5927\u7684\u5de5\u5177\u80fd\u5e2e\u52a9\u6211\u4eec\u5206\u6790\u6027\u80fd\u74f6\u9888\uff0c\u627e\u5230\u95ee\u9898\u6240 \u5728\u3002\u4ee5\u4e0b\u4ecb\u7ecd\u7684\u5de5\u5177\u60f3\u5fc5\u5927\u5bb6\u5df2\u7ecf\u5f88\u719f\u6089\u4e86\uff0c\u7f51\u4e0a\u6709\u5f88\u591a\u76f8\u5173\u6587\u7ae0\u5199\u7684\u90fd\u5f88\u4e0d\u9519\uff0c\u5728\u6b64\u4e0d\u518d\u8d58\u8ff0\uff0c\u4ec5\u5bf9\u8fd9\u4e9b\u5de5\u5177\u5728\u4f7f\u7528\u65f6\u7684\u4e00\u4e9b\u5173\u952e\u70b9\u505a\u4e00\u4e9b\u8bf4\u660e\u3002\u5173\u4e8e\u8fd9\u4e9b\u5de5\u5177\u7684 \u8be6\u7ec6\u4f7f\u7528\u65b9\u6cd5\u8bf7\u89c1\u7f51\u4e0a\u7684\u4e00\u7bc7\u6587\u7ae0\uff1a<a href=\"http:\/\/blog.csdn.net\/innost\/article\/details\/9008691\">http:\/\/blog.csdn.net\/innost\/article\/details\/9008691<\/a>\u3002<\/p>\n<p><strong>\uff08\u4e00\uff09Traceview<\/strong><\/p>\n<p>\u505a\u6027\u80fd\u4f18\u5316\u7684\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u5c31\u662f\u590d\u73b0\u6709\u6027\u80fd\u95ee\u9898\u7684\u573a\u666f\uff0c\u5e76\u76d1\u63a7\u6b64\u8fc7\u7a0b\u4e2d\u7a0b\u5e8f\u7684\u6267\u884c\u6d41\u7a0b\uff0c\u5982\u679c\u80fd\u591f\u65b9\u4fbf\u7684\u5206\u6790\u7a0b\u5e8f\u4e2d\u51fd\u6570\u7684\u8c03\u7528\u5173\u7cfb\u548c\u6267\u884c\u65f6\u95f4\uff0c\u81ea\u7136\u4e5f\u5c31\u5f88\u5bb9\u6613\u627e\u51fa\u6027\u80fd\u74f6\u9888\u4e86\u3002<\/p>\n<p>Traceview\u5c31\u662f\u7528\u6765\u5206\u6790\u51fd\u6570\u8c03\u7528\u8fc7\u7a0b\u7684\u5de5\u5177\uff0c\u5229\u7528\u5b83\u53ef\u4ee5\u65b9\u4fbf\u7684\u5206\u6790\u6027\u80fd\u95ee\u9898\u3002\u5b83\u7684\u4f7f\u7528\u65b9\u5f0f\u9700\u8981\u4ee5\u4e0b\u51e0\u6b65\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528Android\u7684Debug API\uff0c\u6216\u8005DDMS\u76d1\u63a7\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\uff1b<\/li>\n<li>\u590d\u73b0\u6709\u6027\u80fd\u95ee\u9898\u7684\u573a\u666f\uff0c\u7528\u7b2c1\u6b65\u7684\u65b9\u6cd5\u83b7\u53d6\u7a0b\u5e8f\u8fc7\u7a0b\u4e2d\u7684\u51fd\u6570\u8c03\u7528\u65e5\u5fd7\u6587\u4ef6\uff0c\u5373trace\u6587\u4ef6\uff1b<\/li>\n<li>\u4f7f\u7528Traceview\u5bfc\u5165trace\u6587\u4ef6\u5373\u53ef\uff1b<\/li>\n<\/ul>\n<p>Traceview\u7684\u754c\u9762\u5f88\u76f4\u89c2\uff0c\u4f46\u662f\u5728\u5206\u6790\u8fc7\u7a0b\u4e2d\u9700\u8981\u7279\u522b\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ol>\n<li><strong> Profile Panel<\/strong><strong>\u4e2d\u7684\u5404\u5217\u7684\u542b\u4e49<\/strong>\uff1a<\/li>\n<\/ol>\n<ul>\n<li>Incl \u2013 \u6307\u51fd\u6570\u672c\u8eab\u548c\u5185\u90e8\u5d4c\u5957\u7684\u5176\u4ed6\u51fd\u6570\u7684\u6267\u884c\u65f6\u95f4\uff1b<\/li>\n<li>Excl &#8211;\u00a0 \u6307\u51fd\u6570\u672c\u8eab\uff0c\u4e0d\u5305\u542b\u5185\u90e8\u5d4c\u5957\u7684\u5176\u4ed6\u51fd\u6570\u7684\u6267\u884c\u65f6\u95f4\uff1b<\/li>\n<li>Cpu Time \u2013 \u6307\u51fd\u6570\u6267\u884c\u65f6\u6240\u5360\u7528\u7684CPU\u65f6\u95f4\u7247\u7684\u603b\u548c\uff0c\u4e0d\u5305\u542b\u7b49\u5f85\u8c03\u5ea6\u7684\u65f6\u95f4\uff1b<\/li>\n<li>Real Time \u2013 \u6307\u51fd\u6570\u6267\u884c\u8fc7\u7a0b\u7684\u771f\u5b9e\u65f6\u95f4\uff0c\u5305\u542b\u7b49\u5f85\u8c03\u5ea6\u7684\u65f6\u95f4\uff1b<\/li>\n<li>Cpu Time\/Call \u2013 \u6307\u51fd\u6570\u5e73\u5747\u6bcf\u6b21\u8c03\u7528\u7684CPU\u65f6\u95f4\uff1b<\/li>\n<li>Real Time\/Call \u2013 \u6307\u51fd\u6570\u5e73\u5747\u6bcf\u6b21\u8c03\u7528\u7684\u771f\u5b9e\u65f6\u95f4\uff1b<\/li>\n<li>Calls+Recur Calls\/Total \u2013 \u6307\u51fd\u6570\u8c03\u7528\u7684\u603b\u6b21\u6570+\u9012\u5f52\u8c03\u7528\u6b21\u6570\u767e\u5206\u6bd4\uff1b<\/li>\n<li>% &#8211; \u5e26\u6709%\u7684\u5217\u662f\u6307\u51fd\u6570\u7684\u6267\u884c\u65f6\u95f4\u5360\u603b\u91c7\u6837\u65f6\u95f4\u7684\u767e\u5206\u6bd4\uff1b<\/li>\n<\/ul>\n<ol start=\"2\">\n<li><strong> \u5982\u4f55\u5206\u6790\u6027\u80fd\u74f6\u9888<\/strong><\/li>\n<\/ol>\n<p>\u9996\u5148\u901a\u5e38\u9700\u8981\u5173\u5fc3\u7684\u662fCPU\u65f6\u95f4\uff0c\u53ef\u4ee5\u627e\u51fa\u7a0b\u5e8f\u81ea\u8eab\u7684\u95ee\u9898\uff0c\u771f\u5b9e\u65f6\u95f4\u4f1a\u53d7\u5230\u7cfb\u7edf\u5176\u4ed6\u56e0\u7d20\u7684\u5f71\u54cd\u3002\u7136\u540e\u53ef\u4ee5\u4ece\u56db\u4e2a\u65b9\u9762\u8fdb\u884c\u5206\u6790\uff1a<\/p>\n<p>1\uff09\u5206\u6790\u6709\u54ea\u4e9b\u51fd\u6570\u5355\u6b21\u6267\u884c\u65f6\u95f4\u957f<\/p>\n<p>\u53ef\u4ee5\u70b9\u51fb\u201cCpu Time\/Call\u201d\u4e00\u5217\uff0c\u6309\u7167\u964d\u5e8f\u6392\u5217\uff0c\u5e76\u627e\u51fa\u90a3\u4e9b\u6267\u884c\u65f6\u95f4\u76f8\u5bf9\u8f83\u957f\u540c\u65f6\u4e5f\u662f\u6211\u4eec\u5173\u5fc3\u7684\u51fd\u6570\uff0c\u7136\u540e\u518d\u67e5\u770b\u5176\u51fd\u6570\u5185\u90e8\u7684\u8be6\u7ec6\u6267\u884c\u8fc7\u7a0b\uff1b<\/p>\n<p>2\uff09\u5206\u6790\u6709\u54ea\u4e9b\u51fd\u6570\u8c03\u7528\u6b21\u6570\u8fc7\u591a<\/p>\n<p>\u53ef\u4ee5\u70b9\u51fb\u201cCalls+RecurCalls\/Total\u201d\u4e00\u5217\uff0c\u6309\u7167\u964d\u5e8f\u6392\u5217\uff0c\u5e76\u627e\u51fa\u54ea\u4e9b\u6267\u884c\u6b21\u6570\u76f8\u5bf9\u8f83\u591a\u540c\u65f6\u4e5f\u662f\u6211\u4eec\u5173\u5fc3\u7684\u51fd\u6570\uff0c\u7136\u540e\u518d\u67e5\u770b\u5176\u51fd\u6570\u5185\u90e8\u7684\u8be6\u7ec6\u6267\u884c\u8fc7\u7a0b\uff1b<\/p>\n<p>3\uff09\u5206\u6790\u6709\u54ea\u4e9b\u51fd\u6570\u603b\u6267\u884c\u65f6\u95f4\u957f<\/p>\n<p>\u6709\u4e9b\u51fd\u6570\u7684\u5355\u6b21\u6267\u884c\u65f6\u95f4\u4e0d\u662f\u7279\u522b\u957f\uff0c\u603b\u8c03\u7528\u6b21\u6570\u4e5f\u4e0d\u662f\u7279\u522b\u591a\uff0c\u4f46\u662f\u4e8c\u8005\u76f8\u4e58\u5f97\u51fa\u7684\u603b\u7684\u6267\u884c\u65f6\u95f4\u8f83\u957f\uff0c\u53ef\u4ee5\u70b9\u51fb\u201cIncl Cpu Time\u201d\uff0c\u6309\u7167\u964d\u5e8f\u6392\u5217\uff0c\u627e\u51fa\u8fd9\u4e9b\u51fd\u6570\uff1b<\/p>\n<p>4\uff09\u6709\u65f6\u6211\u4eec\u5f88\u660e\u786e\u9700\u8981\u67e5\u770b\u4e00\u4e9b\u7279\u5b9a\u7c7b\u7684\u7279\u5b9a\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u9875\u9762\u6700\u4e0b\u65b9\u7684\u641c\u7d22\u6761\u4e2d\u641c\u7d22\uff0c\u4e0d\u8fc7\u597d\u50cf\u53ea\u652f\u6301\u5168\u5c0f\u5199\u8f93\u5165\u3002<\/p>\n<ol start=\"3\">\n<li>\u00a0\u00a0 \u00a0\u00a0 <strong>\u63d0\u793a\u4e00\u70b9<\/strong>\uff1a\u5229\u7528API\u6216\u5de5\u5177\u91c7\u6837trace\u4fe1\u606f\u65f6\uff0c\u4f1a\u7981\u7528JIT\u529f\u80fd\uff0c\u540c\u65f6\u56e0\u4e3a\u91c7\u6837\u672c\u8eab\u4e5f\u9700\u8981\u5360\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u6240\u4ee5\u7528Traceview\u67e5\u770b\u51fd\u6570\u7684\u6267\u884c\u65f6\u95f4\u90fd\u8981\u6bd4\u6b63\u5e38\u8fd0\u884c\u65f6\u6162\u4e0d\u5c11\uff0c\u6211\u4eec\u53ea\u8981\u5173\u5fc3\u76f8\u5bf9\u7684\u65f6\u95f4\u6d88\u8017\u5373\u53ef\u3002<\/li>\n<\/ol>\n<p><strong>\uff08\u4e8c\uff09dmtracedump<\/strong><\/p>\n<p>trace\u6587\u4ef6\u9664\u4e86\u53ef\u4ee5\u7528TraceView\u5206\u6790\u5916\uff0c\u8fd8\u53ef\u4ee5\u5229\u7528\u53e6\u5916\u4e00\u4e2a\u5de5\u5177dmtracedump\uff0c\u5b83\u7684\u529f\u80fd\u4e5f\u5f88\u5f3a\u5927\u3002\u5982\u679c\u4f60\u89c9\u5f97\u5728Traceview\u4e2d\u67e5\u627e\u7c7b\u548c\u51fd\u6570\u5f88\u75db\u82e6\uff0c\u4e0d\u59a8\u8bd5\u8bd5\u8fd9\u4e2a\u5de5\u5177\u3002<\/p>\n<p>dmtracedump\u662fSDK\u7684tools\u76ee\u5f55\u4e0b\u7684\u53ef\u6267\u884c\u6587\u4ef6\uff0c\u4f60\u53ef\u4ee5\u67e5\u770b\u5b83\u7684\u5e2e\u52a9\u4fe1\u606f\uff0c\u5e76\u6267\u884c\u7c7b\u4f3c\u5982\u4e0b\u7684\u547d\u4ee4\uff1a<\/p>\n<p>dmtracedump 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class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-255445","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/255445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=255445"}],"version-history":[{"count":1,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/255445\/revisions"}],"predecessor-version":[{"id":255446,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/255445\/revisions\/255446"}],"wp:attachment":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=255445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=255445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=255445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}