作者?:?萬境絕塵??轉載請著名出處
eclipse 自帶的 LogCat 工具太垃圾了, 開始用 adb logcat 在終端查看日志;
1. 解析 adb logcat 的幫助信息
在命令行中輸入?adb logcat --help?命令, 就可以顯示該命令的幫助信息;
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octopus@octopus:~$?adb?logcat?--help??Usage:?logcat?[options]?[filterspecs]??options?include:????-s??????????????Set?default?filter?to?silent.????????????????????Like?specifying?filterspec?'*:s'????-f?<filename>???Log?to?file.?Default?to?stdout????-r?[<kbytes>]???Rotate?log?every?kbytes.?(16?if?unspecified).?Requires?-f????-n?<count>??????Sets?max?number?of?rotated?logs?to?<count>,?default?4????-v?<format>?????Sets?the?log?print?format,?where?<format>?is?one?of:??????????????????????brief?process?tag?thread?raw?time?threadtime?long??????-c??????????????clear?(flush)?the?entire?log?and?exit????-d??????????????dump?the?log?and?then?exit?(don't?block)????-t?<count>??????print?only?the?most?recent?<count>?lines?(implies?-d)????-g??????????????get?the?size?of?the?log's?ring?buffer?and?exit????-b?<buffer>?????Request?alternate?ring?buffer,?'main',?'system',?'radio'????????????????????or?'events'.?Multiple?-b?parameters?are?allowed?and?the????????????????????results?are?interleaved.?The?default?is?-b?main?-b?system.????-B??????????????output?the?log?in?binary??filterspecs?are?a?series?of?????<tag>[:priority]????where?<tag>?is?a?log?component?tag?(or?*?for?all)?and?priority?is:????V????Verbose????D????Debug????I????Info????W????Warn????E????Error????F????Fatal????S????Silent?(supress?all?output)????'*'?means?'*:d'?and?<tag>?by?itself?means?<tag>:v????If?not?specified?on?the?commandline,?filterspec?is?set?from?ANDROID_LOG_TAGS.??If?no?filterspec?is?found,?filter?defaults?to?'*:I'????If?not?specified?with?-v,?format?is?set?from?ANDROID_PRINTF_LOG??or?defaults?to?"brief"??
adb logcat 命令格式?: adb logcat [選項] [過濾項], 其中 選項 和 過濾項 在 中括號 [] 中, 說明這是可選的;
(1) 選項解析
選項解析?:?
--?"-s"選項?: 設置輸出日志的標簽, 只顯示該標簽的日志;
--?"-f"選項?: 將日志輸出到文件, 默認輸出到標準輸出流中, -f 參數執行不成功;
--?"-r"選項?: 按照每千字節輸出日志, 需要 -f 參數, 不過這個命令沒有執行成功;
--?"-n"選項?: 設置日志輸出的最大數目, 需要 -r 參數, 這個執行 感覺 跟 adb logcat 效果一樣;
--?"-v"選項?: 設置日志的輸出格式, 注意只能設置一項;
--?"-c"選項?: 清空所有的日志緩存信息;
--?"-d"選項?: 將緩存的日志輸出到屏幕上, 并且不會阻塞;
--?"-t"選項?: 輸出最近的幾行日志, 輸出完退出, 不阻塞;
--?"-g"選項?: 查看日志緩沖區信息;
--?"-b"選項?: 加載一個日志緩沖區, 默認是 main, 下面詳解;
--?"-B"選項?: 以二進制形式輸出日志;
.
輸出指定標簽內容?:?
--?"-s"選項?: 設置默認的過濾器, 如 我們想要輸出 "System.out" 標簽的信息, 就可以使用?adb logcat -s System.out?命令;
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octopus@octopus:~$?adb?logcat?-s?System.out??---------?beginning?of?/dev/log/system??---------?beginning?of?/dev/log/main??I/System.out(22930):?GSM?-91??I/System.out(22930):?SignalStrength?issssssssss?:?-91??I/System.out(22930):?GSM?-91??I/System.out(22930):?SignalStrength?issssssssss?:?-91??I/System.out(22930):?Supervisor?Thread??I/System.out(22930):?Got?run?mode??
輸出日志信息到文件?:?
--?"-f"選項?: 該選向后面跟著輸入日志的文件, 使用?adb logcat -f log?命令, 會出現錯誤, 這里我們不推薦使用該選項;
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octopus@octopus:~$?adb?logcat?-f?log??couldn't?open?output?file:?Read-only?file?system??
--
?">"輸出
?: ">" 后面跟著要輸出的日志文件, 可以將 logcat 日志輸出到文件中, 使用?
adb logcat > log
?命令, 使用?
more log
?命令查看日志信息;
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octopus@octopus:~$?adb?logcat?>?log??^C??octopus@octopus:~$?more?log??---------?beginning?of?/dev/log/system??V/ActivityManager(??500):?We?have?pending?thumbnails:?null??V/ActivityManager(??500):?getTasks:?max=1,?flags=0,?receiver=null??V/ActivityManager(??500):?com.android.settings/.Settings:?task=TaskRecord{42392278?#448?A?com.android.settings?U?0}??V/ActivityManager(??500):?We?have?pending?thumbnails:?null??
指定 logcat 的日志輸出格式
?:?
--?"-v"選項?: 使用?adb logcat -v time?命令, 可以啥看日志的輸出時間;
--?"brief"格式?: 這是默認的日志格式?" 優先級 / 標簽 (進程ID) : 日志信息 ", 使用?adb logcat -v prief?命令;
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octopus@octopus:~$?adb?logcat?-v?brief??---------?beginning?of?/dev/log/system??D/PowerManagerService(??500):?handleSandman:?canDream=true,?mWakefulness=Awake??D/PowerManagerService(??500):?releaseWakeLockInternal:?lock=1101267696,?flags=0x0??
--?
"process"格式
?:?
" 優先級 (進程ID) : 日志信息 "
, 使用?
adb logcat -v process
?命令;
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octopus@octopus:~$?adb?logcat?-v?process??---------?beginning?of?/dev/log/system??D(??500)?MobileDataStateReceiver?received:?ACTION_ANY_DATA_CONNECTION_STATE_CHANGED_MOBILE?[wap]??(MobileDataStateTracker)??V(??500)?Broadcast:?Intent?{?act=android.intent.action.ANY_DATA_STATE_MOBILE?flg=0x10?(has?extras)?}?ordered=true?userid=0??(ActivityManager)??D(??500)?wap:?Intent?from?SIM?0,?current?SIM?0,?current?DataState?DISCONNECTED??(MobileDataStateTracker)??D(??500)?wap:?wap?setting?isAvailable?to?false??(MobileDataStateTracker)??D(??500)?wap:?Received?state=DISCONNECTED,?old=DISCONNECTED,?reason=dataDetached??(MobileDataStateTracker)??D(??500)?BDC-Calling?finishReceiver:?IIntentReceiver=41c46ba0??(ActivityThread)??
--?
"tag"格式
?:?
" 優先級 / 標簽 : 日志信息"
, 使用?
adb logcat -v tag
?命令;
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octopus@octopus:~$?adb?logcat?-v?tag??---------?beginning?of?/dev/log/system??I/PowerManagerService:?setBrightness?mButtonLight?0.??D/PowerManagerService:?updateScreenStateLocked:?mDisplayReady=true,?newScreenState=2,?mWakefulness=1,?mWakeLockSummary=0x1,?mUserActivitySummary=0x1,?mBootCompleted=true??D/PowerManagerService:?handleSandman:?canDream=true,?mWakefulness=Awake??
--?
"thread"格式
?:?
" 優先級 ( 進程ID : 線程ID) 標簽 : 日志內容 "
, 使用?
adb logcat -v tag
?命令;
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octopus@octopus:~$?adb?logcat?-v?thread??---------?beginning?of?/dev/log/system??V(??500:?2141)?getTasks:?max=1,?flags=0,?receiver=null??V(??500:?2141)?com.lewa.launcher/.Launcher:?task=TaskRecord{41dccc20?#425?A?com.lewa.launcher?U?0}??V(??500:?2141)?We?have?pending?thumbnails:?null??V(??500:?2140)?getTasks:?max=1,?flags=0,?receiver=null??
--?
"raw"格式
?: 只輸出日志信息, 不附加任何其他 信息, 如 優先級 標簽等, 使用?
adb logcat -v raw
?命令;
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octopus@octopus:~$?adb?logcat?-v?raw??---------?beginning?of?/dev/log/system??notifications?are?enabled?for?com.kindroid.security??Assigned?score=0?to?Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??Native?set?alarm?:Alarm{41e1ca00?type?3?com.kindroid.security}??reset?poweroff?alarm?none??
--?
"time"格式?
:?
"日期 時間 優先級 / 標簽 (進程ID) : 進程名稱 : 日志信息 "?
, 使用?
adb logcat -v time
?命令;
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octopus@octopus:~$?adb?logcat?-v?time??---------?beginning?of?/dev/log/system??04-25?17:18:13.019?V/ActivityManager(??500):?Broadcast?sticky:?Intent?{?act=android.intent.action.SIG_STR?flg=0x10?(has?extras)?}?ordered=false?userid=-1??04-25?17:18:13.157?V/NotificationService(??500):?enqueueNotificationInternal:?pkg=com.kindroid.security?id=1020?notification=Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??04-25?17:18:13.158?V/NotificationService(??500):?notifications?are?enabled?for?com.kindroid.security??04-25?17:18:13.158?V/NotificationService(??500):?Assigned?score=0?to?Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??04-25?17:18:13.555?V/ActivityManager(??500):?getTasks:?max=1,?flags=0,?receiver=null??
--?
"long"格式
?
:?
" [ 日期 時間 進程ID : 線程ID 優先級 / 標簽] 日志信息 "
, 輸出以上提到的所有的頭信息, 使用?
adb logcat -v long
?命令;
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octopus@octopus:~$?adb?logcat?-v?long??---------?beginning?of?/dev/log/system??[?04-25?17:21:18.118???500:0x2fe?V/ActivityManager?]??We?have?pending?thumbnails:?null????[?04-25?17:21:18.696???593:0x251?W/ActivityThread?]??Content?provider?com.android.providers.telephony.TelephonyProvider?already?published?as?telephony????[?04-25?17:21:19.119???500:0x396?V/ActivityManager?]??getTasks:?max=1,?flags=0,?receiver=null??
清空日志緩存信息
?: 使用?
adb logcat -c
?命令, 可以將之前的日志信息清空, 重新開始輸出日志信息;
將緩存日志輸出
?: 使用?
adb logcat -d
?命令, 輸出命令, 之后推出命令, 不會進行阻塞;
輸出最近的日志?: 使用?adb logcat -t 5?命令, 可以輸出最近的5行日志, 并且不會阻塞;
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octopus@octopus:~$?adb?logcat?-t?5??---------?beginning?of?/dev/log/system??---------?beginning?of?/dev/log/main??W/ADB_SERVICES(10028):?adb:?unable?to?open?/proc/10028/oom_adj??D/dalvikvm(23292):?threadid=11:?created?from?interp??D/dalvikvm(23292):?start?new?thread??D/dalvikvm(23292):?threadid=11:?notify?debugger??D/dalvikvm(23292):?threadid=11?(Thread-24538):?calling?run()??octopus@octopus:~$???
查看日志緩沖區信息
?: 使用?
adb logcat -g
?命令;
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octopus@octopus:~$?adb?logcat?-g??/dev/log/main:?ring?buffer?is?256Kb?(255Kb?consumed),?max?entry?is?5120b,?max?payload?is?4076b??/dev/log/system:?ring?buffer?is?256Kb?(255Kb?consumed),?max?entry?is?5120b,?max?payload?is?4076b??octopus@octopus:~$???
加載日志緩沖區
?: 使用?
adb logcat -b 緩沖區類型
?命令;
--?Android中的日志緩沖區?: system緩沖區 - 與系統相關的日志信息, radio緩沖區 - 廣播電話相關的日志信息, events緩沖區 - 事件相關的日志信息, main緩沖區 - 默認的緩沖區;
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octopus@octopus:~$?adb?logcat?-b?radio?-t?5??D/PHONE???(23599):?[GeminiDataSubUtil]?UAPP_C6-4??D/GSM?????(23599):?[GDCT][simId1]apnType?=?default??D/GSM?????(23599):?[GDCT][simId1]isDataAllowed:?not?allowed?due?to?-?gprs=?1?-?SIM?not?loaded?-?desiredPowerState=?false??D/GSM?????(23599):?[GDCT][simId1]isDataPossible(default):?possible=false?isDataAllowed=false?apnTypePossible=true?apnContextisEnabled=true?apnContextState()=IDLE??I/MUXD????(23591):?[gsm0710muxd]?3426:main():?Frames?received/dropped:?18242/0??octopus@octopus:~$???octopus@octopus:~$?adb?logcat?-b?main?-t?5??D/NotificationService(??500):?notification.sound=null??D/NotificationService(??500):?mDmLock=false??I/ATCIJ???(16576):?Couldn't?find?'atci-serv-fw'?socket;?retrying?after?timeout??W/ADB_SERVICES(??246):?create_local_service_socket()?name=shell:export?ANDROID_LOG_TAGS=""?;?exec?logcat?-b?main?-t?5??W/ADB_SERVICES(16815):?adb:?unable?to?open?/proc/16815/oom_adj??octopus@octopus:~$???octopus@octopus:~$?adb?logcat?-b?system?-t?5??D/PowerManagerService(??500):?updateScreenStateLocked:?mDisplayReady=true,?newScreenState=0,?mWakefulness=0,?mWakeLockSummary=0x1,?mUserActivitySummary=0x0,?mBootCompleted=true??D/PowerManagerService(??500):?handleSandman:?canDream=false,?mWakefulness=Asleep??V/NotificationService(??500):?enqueueNotificationInternal:?pkg=com.kindroid.security?id=1020?notification=Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??V/NotificationService(??500):?notifications?are?enabled?for?com.kindroid.security??V/NotificationService(??500):?Assigned?score=0?to?Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??octopus@octopus:~$???octopus@octopus:~$?adb?logcat?-b?event?-t?5??Unable?to?open?log?device?'/dev/log/event':?No?such?file?or?directory??octopus@octopus:~$?adb?logcat?-b?events?-t?5??I/notification_cancel(??500):?[com.kindroid.security,1026,NULL,0,0,64]??I/notification_enqueue(??500):?[com.kindroid.security,1020,NULL,0,Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])]??I/notification_cancel(??500):?[com.kindroid.security,1026,NULL,0,0,64]??I/notification_enqueue(??500):?[com.kindroid.security,1020,NULL,0,Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])]??I/notification_cancel(??500):?[com.kindroid.security,1026,NULL,0,0,64]??octopus@octopus:~$???
以二進制形式輸出日志
?: 使用?
adb logcat -B
?命令;
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octopus@octopus:~$?adb?logcat?-B??-t?5??O��_�3ZS�4gps_mt3326nmea_reader_parse:?line?=?1218GPS?get?accuracy?failed,?fix?mode:1??^��_�3ZS�=gps_mt3326nmea_reader_addc:?line?=?1331the?structure?include?nmea_cb?address?is?0x658cc8e8??H��_�3ZSEGEgps_mt3326nmea_reader_addc:?line?=?1332nmea_cb?address?is?0x5d2fe279??i���3ZS�)>ADB_SERVICEScreate_local_service_socket()?name=shell:export?ANDROID_LOG_TAGS=""?;?exec?logcat?-B?-t?5??7*E*E�3ZSo�YADB_SERVICESadb:?unable?to?open?/proc/17706/oom_adj??
(2) 過濾項解析
過濾項格式?:?<tag>[:priority] , 標簽:日志等級, 默認的日志過濾項是 " *:I " ;
--?V?: Verbose (明細);
--?D?: Debug (調試);
--?I?: Info (信息);
--?W?: Warn (警告);
--?E?: Error (錯誤);
--?F?: Fatal (嚴重錯誤);
--?S?: Silent(Super all output) (最高的優先級, 可能不會記載東西);
過濾指定等級日志?: 使用?adb logcat 10 *:E?命令, 顯示 Error 以上級別的日志;
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octopus@octopus:~$?adb?logcat?*:E????Note:?log?switch?off,?only?log_main?and?log_events?will?have?logs!??---------?beginning?of?/dev/log/main??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/dalvikvm(??756):?GC_CONCURRENT?freed?1809K,?27%?free?19489K/26695K,?paused?16ms+5ms,?total?109ms??E/WifiHW??(??441):?wifi_send_command?:?SCAN?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/dalvikvm(??756):?GC_CONCURRENT?freed?1820K,?27%?free?19490K/26695K,?paused?16ms+3ms,?total?102ms??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??
過濾指定標簽等級日志?: 使用?adb logcat WifiHW:D *:S?命令進行過濾;
--?命令含義?: 輸出10條日志, 日志是 標簽為?WifiHW, 并且優先級 Debug(調試) 等級以上的級別的日志;
--?注意 *:S?: 如果沒有 *S 就會輸出錯誤;
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octopus@octopus:~$?adb?logcat?WifiHW:D?*:S????Note:?log?switch?off,?only?log_main?and?log_events?will?have?logs!??---------?beginning?of?/dev/log/main??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??
可以同時設置多個過濾器?: 使用?adb logcat WifiHW:D dalvikvm:I *:S?命令,?輸出?WifiHW 標簽 的 Debug 以上級別 和?dalvikvm 標簽的 Info 以上級別的日志;
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octopus@octopus:~$?adb?logcat?WifiHW:D?dalvikvm:I?*:S?????Note:?log?switch?off,?only?log_main?and?log_events?will?have?logs!??---------?beginning?of?/dev/log/main??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/dalvikvm(??756):?GC_CONCURRENT?freed?1820K,?27%?free?19490K/26695K,?paused?17ms+2ms,?total?110ms??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/dalvikvm(??756):?GC_CONCURRENT?freed?1810K,?27%?free?19489K/26695K,?paused?17ms+5ms,?total?108ms??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??
2. 使用管道過濾日志
(1) 過濾固定字符串
過濾固定字符串?: 只要命令行出現的日志都可以過濾, 不管是不是標簽;
--?命令?:?adb logcat | grep Wifi?;
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octopus@octopus:~$?adb?logcat?|?grep?Wifi??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??
過濾字符串忽略大小寫?:?adb logcat | grep -i wifi?;
(2) 使用正則表達式匹配
分析日志?: 該日志開頭兩個字符是 "V/", 后面開始就是標簽, 寫一個正則表達式 "^..ActivityManager", 就可以匹配日志中的 "V/ActivityManager" 字符串;
[plain]?view plaincopy
V/ActivityManager(??574):?getTasks:?max=1,?flags=0,?receiver=null??
正則表達式過濾日志?: 使用上面的正則表達式組成命令?adb logcat | grep "^..Activity"?;
作者?:?萬境絕塵??轉載請著名出處
總結
以上是生活随笔為你收集整理的Ubuntu 下 使用 adb logcat 显示 Android 日志的全部內容，希望文章能夠幫你解決所遇到的問題。
如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。
