公司要調試產品，想要監視試用品的logcat ,捕獲本機產生的日志，發送到服務器上
折騰瞭一天，基本上做好
現在來看代碼
讀取日志需要的權限
<uses-permission android:name="android.permission.READ_LOGS"/>
主要代碼
package mt.fzgh;import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.ArrayList;public class MyLog{ public static class MLog //靜態類 { public static void getLog() { System.out.println("——–func start——–"); // 方法啟動 try { ArrayList<String> cmdLine=new ArrayList<String>(); //設置命令 logcat -d 讀取日志 cmdLine.add("logcat"); cmdLine.add("-d"); ArrayList<String> clearLog=new ArrayList<String>(); //設置命令 logcat -c 清除日志 clearLog.add("logcat"); clearLog.add("-c"); Process process=Runtime.getRuntime().exec(cmdLine.toArray(new String[cmdLine.size()])); //捕獲日志 BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(process.getInputStream())); //將捕獲內容轉換為BufferedReader // Runtime.runFinalizersOnExit(true); String str=null; while((str=bufferedReader.readLine())!=null) //開始讀取日志，每次讀取一行 { Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()])); //清理日志….這裡至關重要，不清理的話，任何操作都將產生新的日志，代碼進入死循環，直到bufferreader滿 System.out.println(str); //輸出，在logcat中查看效果，也可以是其他操作，比如發送給服務器.. } if(str==null) { System.out.println("– is null –"); } } catch(Exception e) { e.printStackTrace(); } System.out.println("——–func end——–"); } }}
這裡比較令人糾結的一點就是日志的清理 logcat -c 如果不加入 清理 在buffer滿為止，代碼自身能夠迭代6~7次….
接下來看看結果 日志比較長….一般都這樣..原日志用藍色，捕獲並輸出對比部分為紅色
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 <<<<<<<<<<<<<< 此處和上面有重復，不過是日志本身重復，上面失敗瞭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——– 註意這裡 此處之下，就是我們捕獲到的內容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——– 眼尖的讀者估計看到這行瞭..還是被重復打印出來瞭，但是我也始終沒辦法瞭….就這兩行，算瞭吧，我接受這個冗餘，如果各位讀者有辦法解決…歡迎交流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——– 此處捕獲的內容輸出結束….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
最後，感謝一下諸多前輩對編碼經驗的無私奉獻….
這裡指出一些本人參考過的代碼和不足，csdn專傢xys 前輩也制作瞭 捕獲log的demo程序，並且廣為流傳，不過經過親測，似乎隻能捕獲 觸發捕獲事件 本身，
也是因為這個原因，我才覺得需要一個更加完善的程序來分享給大傢，特發此文共勉。
附帶一份logcat的 命令…不過好像 過濾器 指令有問題….慎用
選項 說明
-s 默認設置過濾器
– f 文件 輸出到日志文件
-c 清除日志
-d 獲取日志
-g 獲取日志的大小
– v 格式 設置日志（見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：馬濤
