{"id":4630,"date":"2021-09-02T16:32:37","date_gmt":"2021-09-02T08:32:37","guid":{"rendered":"http:\/\/122.152.205.50\/wordpress\/?p=4630"},"modified":"2023-07-08T16:48:28","modified_gmt":"2023-07-08T08:48:28","slug":"android-log%e6%ba%90%e7%a0%81%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=4630","title":{"rendered":"Android-Log\u6e90\u7801\u8be6\u89e3"},"content":{"rendered":"<h1>Log.java<\/h1>\n<p>\u6e90\u7801\u76ee\u5f55\uff1aframeworks\/base\/core\/java\/android\/util<br \/>\n\u7f16\u8bd1\u76ee\u5f55\uff1aframeworks\/base<br \/>\n<img src=\"https:\/\/upload-images.jianshu.io\/upload_images\/18328858-64de7db39ae7bc74.png?imageMogr2\/auto-orient\/strip%7CimageView2\/2\/w\/1240\" alt=\"image.png\" \/><br \/>\n\u6211\u60ca\u5947\u7684\u53d1\u73b0\uff0cLog.java\u91cc\u6ca1\u6709\u5b9a\u4e49println_native\u65b9\u6cd5\uff0c\u4e5f\u6ca1\u6709System.loadLibary\u4efb\u4f55\u7684so\u5e93\u3002\u5e26\u7740\u8fd9\u4e2a\u7591\u95ee\uff0c\u6211\u4eec\u6765\u770bc\u5c42\u4ee3\u7801\u3002<\/p>\n<h1>android_util_Log.cpp<\/h1>\n<p>\u6e90\u7801\u76ee\u5f55\uff1aframeworks\/base\/core\/jni<br \/>\n\u7f16\u8bd1\u76ee\u5f55\uff1aframeworks\/base\/core\/jni<\/p>\n<pre><code class=\"language-c line-numbers\">\/*\n * JNI registration.\n *\/\nstatic JNINativeMethod gMethods[] = {\n    \/* name, signature, funcPtr *\/\n    { \"isLoggable\",      \"(Ljava\/lang\/String;I)Z\", (void*) android_util_Log_isLoggable },\n    { \"println_native\",  \"(IILjava\/lang\/String;Ljava\/lang\/String;)I\", (void*) android_util_Log_println_native },\n};\n\nint register_android_util_Log(JNIEnv* env)\n{\n    jclass clazz = env-&gt;FindClass(\"android\/util\/Log\");\n\n    if (clazz == NULL) {\n        ALOGE(\"Can't find android\/util\/Log\");\n        return -1;\n    }\n\n    levels.verbose = env-&gt;GetStaticIntField(clazz, env-&gt;GetStaticFieldID(clazz, \"VERBOSE\", \"I\"));\n    levels.debug = env-&gt;GetStaticIntField(clazz, env-&gt;GetStaticFieldID(clazz, \"DEBUG\", \"I\"));\n    levels.info = env-&gt;GetStaticIntField(clazz, env-&gt;GetStaticFieldID(clazz, \"INFO\", \"I\"));\n    levels.warn = env-&gt;GetStaticIntField(clazz, env-&gt;GetStaticFieldID(clazz, \"WARN\", \"I\"));\n    levels.error = env-&gt;GetStaticIntField(clazz, env-&gt;GetStaticFieldID(clazz, \"ERROR\", \"I\"));\n    levels.assert = env-&gt;GetStaticIntField(clazz, env-&gt;GetStaticFieldID(clazz, \"ASSERT\", \"I\"));\n\n    return AndroidRuntime::registerNativeMethods(env, \"android\/util\/Log\", gMethods, NELEM(gMethods));\n}\n<\/code><\/pre>\n<p>\u770b\u4e86<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/blog.csdn.net\/flydream0\/article\/details\/7371692\">https:\/\/blog.csdn.net\/flydream0\/article\/details\/7371692<\/a>\u8fd9\u7bc7\u535a\u5ba2\u624d\u77e5\u9053\uff0c\u8fd9\u79cd\u662f\u663e\u793a\u6ce8\u518cnative\u65b9\u6cd5\u7684\u4e00\u79cd\u65b9\u5f0f\u3002  android\u6e90\u7801\u91cc\u57fa\u672c\u90fd\u91c7\u7528\u8fd9\u79cd\u65b9\u5f0f\u6765\u6ce8\u518cnative\u65b9\u6cd5\u3002<\/p>\n<button class=\"simplefavorite-button\" data-postid=\"4630\" 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>Log.java \u6e90\u7801\u76ee\u5f55\uff1aframeworks\/base\/core\/java\/android\/ut [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[745],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/4630"}],"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=4630"}],"version-history":[{"count":1,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/4630\/revisions"}],"predecessor-version":[{"id":4631,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/4630\/revisions\/4631"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4630"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}