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如何获取 android 的系统日志
2011-11-07 15:43:28      个评论      
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公司要调试产品,想要监视试用品的logcat ,捕获本机产生的日志,发送到服务器上

 

 

 

折腾了一天,基本上做好

 

现在来看代码

 

  读取日志需要的权限

 

<uses-permission android:name="android.permission.READ_LOGS"/>

主要代码

 

package mt.fzgh;import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.ArrayList;public class MyLog{    public static class MLog    //静态类    {        public static void getLog()        {            System.out.println("--------func start--------"); // 方法启动            try            {                ArrayList<String> cmdLine=new ArrayList<String>();   //设置命令   logcat -d 读取日志                cmdLine.add("logcat");                cmdLine.add("-d");                                ArrayList<String> clearLog=new ArrayList<String>();  //设置命令  logcat -c 清除日志                clearLog.add("logcat");                clearLog.add("-c");                                Process process=Runtime.getRuntime().exec(cmdLine.toArray(new String[cmdLine.size()]));   //捕获日志                BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(process.getInputStream()));    //将捕获内容转换为BufferedReader                //                Runtime.runFinalizersOnExit(true);                String str=null;                while((str=bufferedReader.readLine())!=null)    //开始读取日志,每次读取一行                {                    Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()]));  //清理日志....这里至关重要,不清理的话,任何操作都将产生新的日志,代码进入死循环,直到bufferreader满                    System.out.println(str);    //输出,在logcat中查看效果,也可以是其他操作,比如发送给服务器..                }                if(str==null)                {                    System.out.println("--   is null   --");                }            }            catch(Exception e)            {                e.printStackTrace();            }            System.out.println("--------func end--------");        }    }}

这里比较令人纠结的一点就是日志的清理  logcat -c  如果不加入 清理 在buffer满为止,代码自身能够迭代6~7次....

 

 

 

接下来看看结果         日志比较长....一般都这样..原日志用蓝色,捕获并输出对比部分为红色

 

11-07 06:32:35.895: DEBUG/AndroidRuntime(1071): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<11-07 06:32:35.905: DEBUG/AndroidRuntime(1071): CheckJNI is ON11-07 06:32:36.106: DEBUG/AndroidRuntime(1071): --- registering native functions ---11-07 06:32:36.436: DEBUG/ddm-heap(1071): Got feature list request11-07 06:32:36.817: DEBUG/PackageParser(52): Scanning package: /data/app/vmdl53483.tmp11-07 06:32:36.915: INFO/PackageManager(52): Removing non-system package:mt.fzgh11-07 06:32:36.915: DEBUG/PackageManager(52): Removing package mt.fzgh11-07 06:32:36.926: DEBUG/PackageManager(52):   Activities: mt.fzgh.LogDemoActivity11-07 06:32:37.025: DEBUG/PackageManager(52): Scanning package mt.fzgh11-07 06:32:37.037: INFO/PackageManager(52): /data/app/vmdl53483.tmp changed; unpacking11-07 06:32:37.056: DEBUG/installd(32): DexInv: --- BEGIN '/data/app/vmdl53483.tmp' ---11-07 06:32:37.257: DEBUG/dalvikvm(1077): DexOpt: load 32ms, verify 70ms, opt 1ms11-07 06:32:37.275: DEBUG/installd(32): DexInv: --- END '/data/app/vmdl53483.tmp' (success) ---11-07 06:32:37.275: DEBUG/PackageManager(52):   Activities: mt.fzgh.LogDemoActivity11-07 06:32:37.296: DEBUG/ActivityManager(52): Uninstalling process mt.fzgh11-07 06:32:37.296: DEBUG/ActivityManager(52): Force removing process ProcessRecord{44ed5a28 929:mt.fzgh/10029} (mt.fzgh/10029)11-07 06:32:37.296: INFO/Process(52): Sending signal. PID: 929 SIG: 911-07 06:32:37.336: DEBUG/ActivityManager(52): Received spurious death notification for thread android.os.BinderProxy@44ce758811-07 06:32:37.415: INFO/installd(32): move /data/dalvik-cache/data@app@vmdl53483.tmp@classes.dex -> /data/dalvik-cache/data@app@mt.fzgh.apk@classes.dex11-07 06:32:37.426: DEBUG/PackageManager(52): New package installed in /data/app/mt.fzgh.apk11-07 06:32:37.525: DEBUG/AndroidRuntime(1071): Shutting down VM11-07 06:32:37.525: DEBUG/dalvikvm(1071): DestroyJavaVM waiting for non-daemon threads to exit11-07 06:32:37.535: DEBUG/dalvikvm(1071): DestroyJavaVM shutting VM down11-07 06:32:37.535: DEBUG/dalvikvm(1071): HeapWorker thread shutting down11-07 06:32:37.535: DEBUG/dalvikvm(1071): HeapWorker thread has shut down11-07 06:32:37.535: DEBUG/jdwp(1071): JDWP shutting down net...11-07 06:32:37.535: INFO/dalvikvm(1071): Debugger has detached; object registry had 1 entries11-07 06:32:37.535: DEBUG/dalvikvm(1071): VM cleaning up11-07 06:32:37.546: DEBUG/dalvikvm(1071): LinearAlloc 0x0 used 623916 of 5242880 (11%)11-07 06:32:37.575: DEBUG/ActivityManager(52): Uninstalling process mt.fzgh11-07 06:32:37.575: ERROR/AndroidRuntime(1071): ERROR: thread attach failed11-07 06:32:38.047: DEBUG/dalvikvm(52): GC freed 13838 objects / 811832 bytes in 263ms11-07 06:32:38.056: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f0700e511-07 06:32:38.086: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f02003111-07 06:32:38.086: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f02003011-07 06:32:38.086: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f05000011-07 06:32:38.195: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f06000011-07 06:32:38.195: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f06000111-07 06:32:38.395: DEBUG/dalvikvm(106): GC freed 217 objects / 9344 bytes in 319ms11-07 06:32:38.466: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f0700e511-07 06:32:38.466: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f02003111-07 06:32:38.466: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f02003011-07 06:32:38.466: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f05000011-07 06:32:38.475: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f06000011-07 06:32:38.475: WARN/ResourceType(52): Resources don't contain package for resource number 0x7f06000111-07 06:32:38.766: DEBUG/AndroidRuntime(1082): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<          此处和上面有重复,不过是日志本身重复,上面失败了11-07 06:32:38.775: DEBUG/AndroidRuntime(1082): CheckJNI is ON11-07 06:32:39.195: DEBUG/AndroidRuntime(1082): --- registering native functions ---11-07 06:32:39.535: DEBUG/ddm-heap(1082): Got feature list request11-07 06:32:39.895: INFO/ActivityManager(52): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=mt.fzgh/.LogDemoActivity }11-07 06:32:39.985: INFO/ActivityManager(52): Start proc mt.fzgh for activity mt.fzgh/.LogDemoActivity: pid=1088 uid=10029 gids={1007}11-07 06:32:39.995: DEBUG/AndroidRuntime(1082): Shutting down VM11-07 06:32:39.995: DEBUG/dalvikvm(1082): DestroyJavaVM waiting for non-daemon threads to exit11-07 06:32:39.995: DEBUG/dalvikvm(1082): DestroyJavaVM shutting VM down11-07 06:32:39.995: DEBUG/dalvikvm(1082): HeapWorker thread shutting down11-07 06:32:39.995: DEBUG/dalvikvm(1082): HeapWorker thread has shut down11-07 06:32:39.995: DEBUG/jdwp(1082): JDWP shutting down net...11-07 06:32:39.995: INFO/dalvikvm(1082): Debugger has detached; object registry had 1 entries11-07 06:32:40.018: DEBUG/dalvikvm(1082): VM cleaning up11-07 06:32:40.036: DEBUG/dalvikvm(1082): LinearAlloc 0x0 used 639500 of 5242880 (12%)11-07 06:32:40.065: ERROR/AndroidRuntime(1082): ERROR: thread attach failed11-07 06:32:40.767: DEBUG/ddm-heap(1088): Got feature list request11-07 06:32:40.815: INFO/mt(1088): success11-07 06:32:40.815: INFO/System.out(1088): --------func start--------     注意这里  此处之下,就是我们捕获到的内容11-07 06:32:41.086: INFO/System.out(1088): D/AndroidRuntime( 1071): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<11-07 06:32:41.125: INFO/System.out(1088): D/AndroidRuntime( 1071): CheckJNI is ON11-07 06:32:41.166: INFO/System.out(1088): D/AndroidRuntime( 1071): --- registering native functions ---11-07 06:32:41.206: INFO/System.out(1088): D/ddm-heap( 1071): Got feature list request11-07 06:32:41.246: INFO/System.out(1088): D/PackageParser(   52): Scanning package: /data/app/vmdl53483.tmp11-07 06:32:41.305: INFO/System.out(1088): I/PackageManager(   52): Removing non-system package:mt.fzgh11-07 06:32:41.346: INFO/System.out(1088): D/PackageManager(   52): Removing package mt.fzgh11-07 06:32:41.386: INFO/System.out(1088): D/PackageManager(   52):   Activities: mt.fzgh.LogDemoActivity11-07 06:32:41.416: INFO/System.out(1088): D/PackageManager(   52): Scanning package mt.fzgh11-07 06:32:41.456: INFO/System.out(1088): I/PackageManager(   52): /data/app/vmdl53483.tmp changed; unpacking11-07 06:32:41.506: INFO/System.out(1088): D/installd(   32): DexInv: --- BEGIN '/data/app/vmdl53483.tmp' ---11-07 06:32:41.546: INFO/System.out(1088): D/dalvikvm( 1077): DexOpt: load 32ms, verify 70ms, opt 1ms11-07 06:32:41.586: INFO/System.out(1088): D/installd(   32): DexInv: --- END '/data/app/vmdl53483.tmp' (success) ---11-07 06:32:41.626: INFO/System.out(1088): D/PackageManager(   52):   Activities: mt.fzgh.LogDemoActivity11-07 06:32:41.666: INFO/System.out(1088): D/ActivityManager(   52): Uninstalling process mt.fzgh11-07 06:32:41.716: INFO/System.out(1088): D/ActivityManager(   52): Force removing process ProcessRecord{44ed5a28 929:mt.fzgh/10029} (mt.fzgh/10029)11-07 06:32:41.756: INFO/System.out(1088): I/Process (   52): Sending signal. PID: 929 SIG: 911-07 06:32:41.805: INFO/System.out(1088): D/ActivityManager(   52): Received spurious death notification for thread android.os.BinderProxy@44ce758811-07 06:32:41.845: INFO/System.out(1088): I/installd(   32): move /data/dalvik-cache/data@app@vmdl53483.tmp@classes.dex -> /data/dalvik-cache/data@app@mt.fzgh.apk@classes.dex11-07 06:32:41.887: INFO/System.out(1088): D/PackageManager(   52): New package installed in /data/app/mt.fzgh.apk11-07 06:32:41.926: INFO/System.out(1088): D/AndroidRuntime( 1071): Shutting down VM11-07 06:32:41.966: INFO/System.out(1088): D/dalvikvm( 1071): DestroyJavaVM waiting for non-daemon threads to exit11-07 06:32:42.016: INFO/System.out(1088): D/dalvikvm( 1071): DestroyJavaVM shutting VM down11-07 06:32:42.056: INFO/System.out(1088): D/dalvikvm( 1071): HeapWorker thread shutting down11-07 06:32:42.095: INFO/System.out(1088): D/dalvikvm( 1071): HeapWorker thread has shut down11-07 06:32:42.136: INFO/System.out(1088): D/jdwp    ( 1071): JDWP shutting down net...11-07 06:32:42.176: INFO/System.out(1088): I/dalvikvm( 1071): Debugger has detached; object registry had 1 entries11-07 06:32:42.216: INFO/System.out(1088): D/dalvikvm( 1071): VM cleaning up11-07 06:32:42.256: INFO/System.out(1088): D/dalvikvm( 1071): LinearAlloc 0x0 used 623916 of 5242880 (11%)11-07 06:32:42.296: INFO/System.out(1088): D/ActivityManager(   52): Uninstalling process mt.fzgh11-07 06:32:42.336: INFO/System.out(1088): E/AndroidRuntime( 1071): ERROR: thread attach failed11-07 06:32:42.376: INFO/System.out(1088): D/dalvikvm(   52): GC freed 13838 objects / 811832 bytes in 263ms11-07 06:32:42.416: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f0700e511-07 06:32:42.458: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f02003111-07 06:32:42.496: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f02003011-07 06:32:42.536: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f05000011-07 06:32:42.575: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f06000011-07 06:32:42.626: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f06000111-07 06:32:42.667: INFO/System.out(1088): D/dalvikvm(  106): GC freed 217 objects / 9344 bytes in 319ms11-07 06:32:42.706: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f0700e511-07 06:32:42.746: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f02003111-07 06:32:42.786: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f02003011-07 06:32:42.825: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f05000011-07 06:32:42.865: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f06000011-07 06:32:42.905: INFO/System.out(1088): W/ResourceType(   52): Resources don't contain package for resource number 0x7f06000111-07 06:32:42.946: INFO/System.out(1088): D/AndroidRuntime( 1082): 11-07 06:32:42.985: INFO/System.out(1088): D/AndroidRuntime( 1082): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<11-07 06:32:43.036: INFO/System.out(1088): D/AndroidRuntime( 1082): CheckJNI is ON11-07 06:32:43.095: INFO/System.out(1088): D/AndroidRuntime( 1082): --- registering native functions ---11-07 06:32:43.139: INFO/System.out(1088): D/ddm-heap( 1082): Got feature list request11-07 06:32:43.176: INFO/System.out(1088): I/ActivityManager(   52): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=mt.fzgh/.LogDemoActivity }11-07 06:32:43.216: INFO/System.out(1088): I/ActivityManager(   52): Start proc mt.fzgh for activity mt.fzgh/.LogDemoActivity: pid=1088 uid=10029 gids={1007}11-07 06:32:43.256: INFO/System.out(1088): D/AndroidRuntime( 1082): Shutting down VM11-07 06:32:43.297: INFO/System.out(1088): D/dalvikvm( 1082): DestroyJavaVM waiting for non-daemon threads to exit11-07 06:32:43.336: INFO/System.out(1088): D/dalvikvm( 1082): DestroyJavaVM shutting VM down11-07 06:32:43.385: INFO/System.out(1088): D/dalvikvm( 1082): HeapWorker thread shutting down11-07 06:32:43.426: INFO/System.out(1088): D/dalvikvm( 1082): HeapWorker thread has shut down11-07 06:32:43.475: INFO/System.out(1088): D/jdwp    ( 1082): JDWP shutting down net...11-07 06:32:43.508: INFO/System.out(1088): I/dalvikvm( 1082): Debugger has detached; object registry had 1 entries11-07 06:32:43.546: INFO/System.out(1088): D/dalvikvm( 1082): VM cleaning up11-07 06:32:43.586: INFO/System.out(1088): D/dalvikvm( 1082): LinearAlloc 0x0 used 639500 of 5242880 (12%)11-07 06:32:43.635: INFO/System.out(1088): E/AndroidRuntime( 1082): ERROR: thread attach failed11-07 06:32:43.685: INFO/System.out(1088): D/ddm-heap( 1088): Got feature list request11-07 06:32:43.716: INFO/System.out(1088): I/mt      ( 1088): success11-07 06:32:43.766: INFO/System.out(1088): I/System.out( 1088): --------func start--------               眼尖的读者估计看到这行了..还是被重复打印出来了,但是我也始终没办法了....就这两行,算了吧,我接受这个冗余,如果各位读者有办法解决...欢迎交流11-07 06:32:43.805: INFO/System.out(1088): I/global  ( 1088): Default buffer size used in BufferedReader constructor. It would be better to be explicit if an 8k-char buffer is required.11-07 06:32:43.805: INFO/System.out(1088): --   is null   --11-07 06:32:43.805: INFO/System.out(1088): --------func end--------                  此处捕获的内容输出结束....11-07 06:32:44.006: INFO/ActivityManager(52): Displayed activity mt.fzgh/.LogDemoActivity: 4038 ms (total 4038 ms)11-07 06:32:49.196: DEBUG/dalvikvm(227): GC freed 43 objects / 2048 bytes in 126ms11-07 06:32:54.236: DEBUG/dalvikvm(106): GC freed 2281 objects / 132056 bytes in 151ms

 

 

 

最后,感谢一下诸多前辈对编码经验的无私奉献....

 

这里指出一些本人参考过的代码和不足,csdn专家xys 前辈也制作了 捕获log的demo程序,并且广为流传,不过经过亲测,似乎只能捕获 触发捕获事件 本身,

 

也是因为这个原因,我才觉得需要一个更加完善的程序来分享给大家,特发此文共勉。

 

 

 

附带一份logcat的 命令...不过好像 过滤器 指令有问题....慎用

 

选项 说明

-s 默认设置过滤器

- f 文件 输出到日志文件

-c 清除日志

-d 获取日志

-g 获取日志的大小

- v 格式 设置日志(见下面的格式打印格式)

 

 

 

 

 

- v 格式 例

brief W/tag ( 876): message

process W( 876) message (tag)

tag W/tag : message

thread W( 876:0x37c) message

raw message

time 09-08 05:40:26.729 W/tag ( 876): message

threadtime 09-08 05:40:26.729 876 892 W tag : message

long [ 09-08 05:40:26.729 876:0x37c W/tag ] message

 

 

作者:马涛

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