adb logcat 最详细说明

开发过程中，解决各种问题bug，不管是性能问题还是ANR问题，还是各种严重崩溃问题，经常需要抓取log，从log中分析找到问题源头，并进行修改。

但是，统一时间点下，可能会有很多log打印出来，分属于各个不同的进程。因此，我们需要的部分可能已经被淹没了。因此，使用工具或者命令抓取需要的log部分，并尽可能少的减少遗漏，是非常有必要的。

通常情况下，可以使用工具。

因此，使用命令抓取变得很重要，这里就自己总结下adb相关的命令。

比如eclipse 的logcat可以直接查看log输出，但是有个问题就是在手机设备没有连接的情况下，是很恼火的。比如我需要开机log,可以直接使用adb抓取到txt文件中就OK了。google的同时自己整理了一下。不喜勿喷。

adb logcat 命令使用帮助说明；

logcat: option requires an argument -- v
Unrecognized Option
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"
</tag></tag></tag></tag></buffer></count></count></format></format></count></count></kbytes></filename>

抓取log之前先清除缓存的log信息。

appledeMacBook-Pro:~ apple$ adb logcat -c
appledeMacBook-Pro:~ apple$

或者你可以这样写

appledeMacBook-Pro:~ apple$ adb logcat -c && adb logcat
--------- beginning of /dev/log/main
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H

这样查看晕死。。。。

appledeMacBook-Pro:~ apple$ adb logcat
--------- beginning of /dev/log/main
D/AppOps  ( 1989): startOperation: allowing code 40 uid 1000 package android
D/NtpTrustedTime( 1989): currentTimeMillis() cache hit
--------- beginning of /dev/log/system
D/PowerManagerService( 1989): newScreenState = 0
D/PowerManagerService( 1989): updateDisplayPowerStateLocked:  mBootCompleted = true, mScreenBrightnessSettingDefault = 165
D/PowerManagerService( 1989): updateDisplayPowerStateLocked:  xxxx = 187
D/PowerManagerService( 1989): Package Lib: shouldUseProximitySensorLocked mLidMode = false
D/PowerManagerService( 1989): updateDisplayPowerStateLocked:  yyyyy = 187
D/PowerManagerDisplayController( 1989):  changed is false, mPendingRequestChangedLocked = false
D/NtpTrustedTime( 1989): currentTimeMillis() cache hit
D/NtpTrustedTime( 1989): currentTimeMillis() cache hit

使用I,V,D,E,F,W等过滤

和Log.i ,Log.e ,Log.d,Log.w等对应。

appledeMacBook-Pro:~ apple$ adb logcat *:I
--------- beginning of /dev/log/main
--------- beginning of /dev/log/system
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H

上面输出全部是Log.i打印出来的Log.

输出指定标签的日志.后面必须是*:S

appledeMacBook-Pro:~ apple$ adb logcat Wisdom_ConnectSdk:* *:S
--------- beginning of /dev/log/main
--------- beginning of /dev/log/system
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200

打印有时间的Log

appledeMacBook-Pro:~ apple$ adb logcat -v time
--------- beginning of /dev/log/main
02-08 12:18:48.700 D/eup     (17972): rqdp{  current unseen pn:}com.tencent.androidqqmail:Push
02-08 12:18:49.810 D/MSF.C.NetConnTag( 2700): [E]netRecv ssoSeq:2023997818 uin:*9889 cmd:-316037937 2023998098
02-08 12:18:49.840 D/Q.msg.TroopMsgProxy(18335): [E]insertToList MessageRecord=friendUin:2824senderuin:9517,istroop:1,msgType:-1000,time:1423369131,shmsgseq:33949
02-08 12:18:50.630 D/MSF.C.NetConnTag( 2700): [E]netRecv ssoSeq:2024000051 uin:*9889 cmd:961141751 2024000635
02-08 12:18:50.665 D/MSF.C.NetConnTag( 2700): [E]pa ok: 93239
02-08 12:18:50.670 D/MSF.C.NetConnTag( 2700): [E]netSend ssoSeq:93239 uin:*9889 cmd:-183665717 93419
--------- beginning of /dev/log/system

-v 设置log的打印格式。上面的time显示时间。

process 只显示进程id

appledeMacBook-Pro:~ apple$ adb logcat -c
appledeMacBook-Pro:~ apple$ adb logcat -v process
--------- beginning of /dev/log/main
E(16917) receive a heartbeat msg: H!  (cynicok)
I(16917) request long connection success and the state = 200  (Wisdom_ConnectSdk)
I(16917) receive the heart message H  (Wisdom_ConnectSdk)

-v tag按照标签来打印。

appledeMacBook-Pro:~ apple$ adb logcat -v tag
--------- beginning of /dev/log/main
E/cynicok : receive a heartbeat msg: H!
I/Wisdom_ConnectSdk: request long connection success and the state = 200
I/Wisdom_ConnectSdk: receive the heart message H
I/System.out: AsyncExecImpl : add task, s = 1
D/SyncMainManager: requestInstantSync check local data : quickReply
--------- beginning of /dev/log/system
D/ActivityManager: Not moving, persistent: ProcessRe

-v thread 显示 I ，D E等日志类型，16917：16936 进程ID：线程ID

appledeMacBook-Pro:~ apple$ adb logcat -v thread
--------- beginning of /dev/log/main
E(16917:16936) receive a heartbeat msg: H!
I(16917:16917) request long connection success and the state = 200
I(16917:16917) receive the heart message H
I( 2235: 2235) AsyncExecImpl : add task, s = 1
D( 2235:20109) requestInstantSync check local data : quickReply
--------- beginning of /dev/log/system
D( 1989: 3972) Not moving, persistent: ProcessRecord{41fd2488 2173:com.android.phone/1001}
D( 1989: 2186) noteOperation: allowing code 14 uid 10042 package com.meizu.mzsyncservice

根据进程id来过滤。

adb logcat | grep PID

adb logcat | grep –color= auto PID

appledeMacBook-Pro:~ apple$ adb logcat | grep 16917
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H

带颜色的Log

appledeMacBook-Pro:~ apple$ adb logcat | grep --color=auto  16917
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!

先查看程序进程pid。下面这个命令也可以看到该进程使用内存相关情况。

appledeMacBook-Pro:~ apple$ adb shell dumpsys meminfo com.wisdom.wisdomapp
Applications Memory Usage (kB):
Uptime: 14917420 Realtime: 24328990

** MEMINFO in pid 16835 [com.wisdom.wisdomapp] **
Pss  Private  Private  Swapped     Heap     Heap     Heap
Total    Dirty    Clean    Dirty     Size    Alloc     Free
------   ------   ------   ------   ------   ------   ------
Native Heap        0        0        0        0    22396    20994      653
Dalvik Heap    26814    26660        0        0    29228    28344      884
Dalvik Other     1603     1512        0        0
Stack       24       24        0        0
Other dev        4        0        4        0
.so mmap     1125      732        0        0
.apk mmap        5        0        0        0
.ttf mmap        0        0        0        0
.dex mmap      307       28        0        0
Other mmap       10        8        0        0
Unknown    20246    20240        0        0
TOTAL    50138    49204        4        0    51624    49338     1537

查看当前系统中正在跑的service

appledeMacBook-Pro:~ apple$ adb shell service
Usage: service [-h|-?]
service list
service check SERVICE
service call SERVICE CODE [i32 INT | s16 STR] ...
Options:
i32: Write the integer INT into the send parcel.
s16: Write the UTF-16 string STR into the send parcel.

列出service

appledeMacBook-Pro:~ apple$ adb shell service list
Found 92 services:
0   secsystemserver: [com.lbe.security.service.core.loader2.internal.ISystemServer]
1   secloader2: [com.lbe.security.service.core.loader2.internal.ILoaderServiceEx]
2   sip: [android.net.sip.ISipService]
3   phone_ext: [com.meizu.telephony.ITelephonyExt]
4   phone: [com.android.internal.telephony.ITelephony]
5   iphonesubinfo: [com.android.internal.telephony.IPhoneSubInfo]
6   simphonebook: [com.android.internal.telephony.IIccPhoneBook]
7   isms: [com.android.internal.telephony.ISms]
8   gesture_manager: [android.view.IGestureManager]
9   deivce_states: [android.os.IDeviceStateService]
10  access_control: [android.content.IAccessControlManager]
11  media_router: [android.media.IMediaRouterService]
12  print: [android.print.IPrintManager]
13  dreams: [android.service.dreams.IDreamManager]

有人写了个脚本查看log，具体地址忘了，怪我只保存了脚本内容，却把来源忘了。

python值得学习。有空是要学习下。

#!/usr/bin/env python
#coding:utf-8
#This script is aimed to grep logs by application(User should input a packageName and then we look up for the process ids then separate logs by process ids).

import os
import sys

packageName=str(sys.argv[1])

command = "adb shell ps | grep %s | awk '{print $2}'"%(packageName)
p = os.popen(command)
##for some applications,there are multiple processes,so we should get all the process id
pid = p.readline().strip()
filters = pid
while(pid != ""):
pid = p.readline().strip()
if (pid != ''):
filters = filters +  "|" + pid
#print 'command = %s;filters=%s'%(command, filters)
if (filters != '') :
cmd = 'adb logcat | grep --color=always -E "%s" '%(filters)
os.system(cmd)

脚本使用：

appledeMacBook-Pro:Desktop apple$ python logcat.py com.wisdom.wisdomapp
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200
I/Wisdom_ConnectSdk(16917): receive the heart message H
E/cynicok (16917): receive a heartbeat msg: H!
I/Wisdom_ConnectSdk(16917): request long connection success and the state = 200

ps命令过滤查看。

appledeMacBook-Pro:Desktop apple$ adb shell
shell@mx2:/ $ ps | grep com.meizu.flyme.weather
system    9175  1567  880208 32432 ffffffff 00000000 S com.meizu.flyme.weather
shell@mx2:/ $

adb 这么多命令，我该快速的用呢。其实早就有大神解决了这个问题。

git 地址 :https://github.com/JakeWharton/pidcat

这个开源代码pidcat在mac上面使用需要安装HomeView

^CappledeMacBook-Pro:Desktop apple$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" ==> This script will install:
/usr/local/bin/brew
/usr/local/Library/...
/usr/local/share/man/man1/brew.1

Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /bin/mkdir /usr/local
Password:
==> /usr/bin/sudo /bin/chmod g+rwx /usr/local
==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local
==> /usr/bin/sudo /bin/mkdir /Library/Caches/Homebrew
==> /usr/bin/sudo /bin/chmod g+rwx /Library/Caches/Homebrew
==> Downloading and installing Homebrew...
remote: Counting objects: 229812, done.
remote: Compressing objects: 100% (60244/60244), done.
remote: Total 229812 (delta 168312), reused 229812 (delta 168312)
Receiving objects: 100% (229812/229812), 52.82 MiB | 1022 KiB/s, done.
Resolving deltas: 100% (168312/168312), done.
From https://github.com/Homebrew/homebrew * [new branch]      master     -> origin/master
HEAD is now at 9a0fbf6 moreutils: update 0.55 bottle.
==> Installation successful!
==> Next steps
Run `brew doctor` before you install anything
Run `brew help` to get started
appledeMacBook-Pro:Desktop apple$

截取:

Viewing Alternative Log Buffers

Android日志系统为日志消息保持了多个循环缓冲区，而且不是所有的消息都被发送到默认缓冲区，要想查看这些附加的缓冲区，可以使用-b 选项，以下是可以指定的缓冲区：

radio — 查看包含在无线/电话相关的缓冲区消息

events — 查看事件相关的消息

main — 查看主缓冲区 (默认缓冲区)

-b 选项的用法：

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[adb] logcat [-b ]

例如查看radio缓冲区：

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adb logcat -b radio

保存Log到sd卡。

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appledeMacBook-Pro:~ appleadblogcat−d−f/sdcard/testlog.txtappledeMacBook−Pro: apple

配置adb环境变量，并且将变量添加到.bashrc or .zshrc 两个文件中

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export PATH=$PATH:/Users/apple/Documents/Tools/IDE/adt-bundle-mac-x86_64-20131030/sdk/tools:/Users/apple/Documents/Tools/IDE/adt-bundle-mac-x86_64-20131030/sdk/platform-tools

并且要保证.bash_profile也配置好adb。

\

安装完成HomeView以及配置好环境后，安装pidcat.py

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appledeMacBook-Pro:Desktop apple$ brew install pidcat

==> Downloading https://github.com/JakeWharton/pidcat/archive/1.4.1.tar.gz

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