{"id":3566,"date":"2021-01-14T19:51:37","date_gmt":"2021-01-14T11:51:37","guid":{"rendered":"http:\/\/122.152.205.50\/wordpress\/?p=3566"},"modified":"2021-01-15T08:56:14","modified_gmt":"2021-01-15T00:56:14","slug":"android%e8%87%aa%e5%ae%9a%e4%b9%89%e7%b1%bb%e5%8a%a0%e8%bd%bd%e5%99%a8","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=3566","title":{"rendered":"android\u81ea\u5b9a\u4e49\u7c7b\u52a0\u8f7d\u5668"},"content":{"rendered":"\n<h4>1.\u4ece\u7f51\u7edc\u4e0a\u4e0b\u8f7d\u63d2\u4ef6\u7136\u540e\u62f7\u8d1d\u5230app\u5185\u90e8\u5b58\u50a8\uff0c\u6216\u8005\u76f4\u63a5\u590d\u5236\u63d2\u4ef6\u5230app\u5185\u90e8\u5b58\u50a8\u3002<\/h4>\n\n\n\n<h4>2.\u81ea\u5b9a\u4e49ClassLoader<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>  String dexopt = context.getDir(\"dexopt\", 0).getAbsolutePath();\n\n        pluginClassLoader = new DexClassLoader(pluginPath, dexopt, null, hostClassLoader);   \/\/hostClassLoader \u4e3a\u5bbf\u4e3bapp\u7684\u7c7b\u52a0\u8f7d\u5668\uff0c\u6240\u4ee5\u81ea\u5b9a\u4e49\u7c7b\u52a0\u8f7d\u5668\u53ef\u4ee5\u52a0\u8f7d\u5e94\u7528\u7684\u7c7b\u3002<\/code><\/pre>\n\n\n\n<p>\u52a0\u8f7d\u7c7b\u5e76\u8c03\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code> try {\n            \/\/\u5728\u8fd9\u91cc\u6d4b\u8bd5\u662f\u5426\u771f\u6b63\u52a0\u8f7d\u4e86\u63d2\u4ef6\u4e2d\u7684\u7c7b\n            Class&lt;?> clz = pluginClassLoader.loadClass(\"com.renxh.pluginapp.PluginUtils\");\n            Object instance = clz.newInstance();\n            Method showToast = clz.getMethod(\"add\", int.class, int.class);\n            int invoke = (int) showToast.invoke(instance, 1, 2);\n            Log.d(\"mmm\", \"\u63d2\u4ef6\u7ed3\u679c\" + invoke);\n        } catch (Exception e) {\n            e.printStackTrace();\n        }<\/code><\/pre>\n\n\n\n<h4>3.\u5c06\u81ea\u5b9a\u4e49ClassLoader\u5408\u5e76\u5230app\u7684ClassLoader<\/h4>\n\n\n\n<p>\u6309\u7167<a href=\"https:\/\/cloud.tencent.com\/developer\/article\/1071815\">https:\/\/cloud.tencent.com\/developer\/article\/1071815<\/a>\u8fd9\u7bc7\u6587\u7ae0\u7684\u8bf4\u6cd5\uff0c\u53ef\u4ee5\u5c06\u81ea\u5b9a\u4e49\u7684classloader\u4e0e\u5e94\u7528\u7684classloader\u5408\u5e76\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Field baseDexpathList = null;\n        try {\n            \/\/\u83b7\u53d6\u63d2\u4ef6\u4e2d\u7684\u7c7b\n            baseDexpathList = BaseDexClassLoader.class.getDeclaredField(\"pathList\");\n            baseDexpathList.setAccessible(true);\n            Object pathlist = baseDexpathList.get(pluginClassLoader);\n            Field dexElementsFiled = pathlist.getClass().getDeclaredField(\"dexElements\");\n            dexElementsFiled.setAccessible(true);\n            Object[] dexElements = (Object[]) dexElementsFiled.get(pathlist);\n\n            \/\/\u83b7\u53d6\u5e94\u7528\u5185\u7684\u7c7b\n            Field baseDexpathList1 = BaseDexClassLoader.class.getDeclaredField(\"pathList\");\n            baseDexpathList1.setAccessible(true);\n            Object pathlist1 = baseDexpathList1.get(hostClassLoader);\n            Field dexElementsFiled1 = pathlist1.getClass().getDeclaredField(\"dexElements\");\n            dexElementsFiled1.setAccessible(true);\n            Object[] dexElements1 = (Object[]) dexElementsFiled1.get(pathlist1);\n\n\n            \/\/\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\n            Object[] finalArray = (Object[]) Array.newInstance(dexElements.getClass().getComponentType(),\n                    dexElements.length + dexElements1.length);\n            \/\/\u5408\u5e76\u63d2\u4ef6\u548c\u5e94\u7528\u5185\u7684\u7c7b\n            System.arraycopy(dexElements, 0, finalArray, 0, dexElements.length);\n            System.arraycopy(dexElements1, 0, finalArray, dexElements.length, dexElements1.length);\n            \/\/\u628a\u65b0\u6570\u7ec4\u66ff\u6362\u6389\u539f\u5148\u7684\u6570\u7ec4\n            dexElementsFiled1.set(pathlist1, finalArray);\n            Log.d(\"mmm\",\"\u63d2\u4ef6\u52a0\u8f7d\u5b8c\u6210\");\n        } catch (NoSuchFieldException e) {\n            e.printStackTrace();\n        } catch (IllegalAccessException e) {\n            e.printStackTrace();\n        }<\/code><\/pre>\n\n\n\n<p>\u4f46\u662f\u5728android8.0\u7248\u672c\u4ee5\u4e0a\u5c31\u4f1a\u51fa\u73b0\u9002\u914d\u95ee\u9898\uff1a<\/p>\n\n\n\n<p><a href=\"https:\/\/developer.android.google.cn\/about\/versions\/oreo\/android-8.0-changes\">https:\/\/developer.android.google.cn\/about\/versions\/oreo\/android-8.0-changes<\/a><\/p>\n\n\n\n<p class=\"has-text-color has-vivid-red-color\">Android 8.0 \u4e0d\u652f\u6301\u591a\u4e2a\u7c7b\u52a0\u8f7d\u5668\u540c\u65f6\u5c1d\u8bd5\u4f7f\u7528\u76f8\u540c\u7684 DexFile \u5bf9\u8c61\u6765\u5b9a\u4e49\u7c7b\u3002\u5c1d\u8bd5\u8fdb\u884c\u6b64\u64cd\u4f5c\uff0c\u4f1a\u5bfc\u81f4 Android \u8fd0\u884c\u65f6\u5f15\u53d1&nbsp;<code><a href=\"https:\/\/developer.android.google.cn\/reference\/java\/lang\/InternalError\">InternalError<\/a><\/code>&nbsp;\u9519\u8bef\uff0c\u540c\u65f6\u663e\u793a\u6d88\u606f\u201cAttempt to register dex file&nbsp;<code>&lt;filename&gt;<\/code>&nbsp;with multiple class loaders\u201d\u3002 <\/p>\n\n\n\n<p>\u81ea\u5b9a\u4e49\u7684classloader\u5df2\u7ecf\u52a0\u8f7d\u4e86\u4e00\u904ddex\uff0c\u518d\u628adex\u5408\u5e76\u5230app\u7684classloader\u91cc\uff0c\u5c31\u4f1a\u62a5\u4e0a\u9762\u7684\u9519\u8bef\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u518d\u770b<a href=\"https:\/\/cloud.tencent.com\/developer\/article\/1071815\">https:\/\/cloud.tencent.com\/developer\/article\/1071815<\/a>\u8fd9\u7bc7\u6587\u7ae0\u7684\u8bf4\u7684\u5355dexClassLoader\u4e0e\u591adexClassLoader\u7684\u533a\u522b\uff0c\u6240\u4ee5\u53ea\u80fd\u8ba9\u63d2\u4ef6classLoader\u8d1f\u8d23\u52a0\u8f7d\u81ea\u5df1\u7684\u7c7b\u3002\u4f46\u662f\u8fd9\u6837\u505a\u7684\u8bdd\uff0c\u63d2\u4ef6\u91cc\u7684\u7c7b\u53ef\u80fd\u5728\u67d0\u4e2a\u5730\u65b9\u4f1a\u88ab\u7cfb\u7edf\u7684classLoader\u53bb\u52a0\u8f7d\uff0c\u8fd9\u65f6\u5019\u5c31\u4f1a\u62a5class not found\u7684\u9519\u8bef\uff0c\u6bd4\u5982\u63d2\u4ef6\u91ccactivity\u7c7b\u7684\u52a0\u8f7d\u3002<\/p>\n\n\n\n<p><\/p>\n<button class=\"simplefavorite-button\" data-postid=\"3566\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>1.\u4ece\u7f51\u7edc\u4e0a\u4e0b\u8f7d\u63d2\u4ef6\u7136\u540e\u62f7\u8d1d\u5230app\u5185\u90e8\u5b58\u50a8\uff0c\u6216\u8005\u76f4\u63a5\u590d\u5236\u63d2\u4ef6\u5230app\u5185\u90e8\u5b58\u50a8\u3002 2.\u81ea\u5b9a\u4e49Clas [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[113],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/3566"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3566"}],"version-history":[{"count":17,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/3566\/revisions"}],"predecessor-version":[{"id":3596,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/3566\/revisions\/3596"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3566"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}