Filter LogCat to get only the messages from My Application in Android

Question

I observed that when i use Logcat with Eclipse with ADT for Android  I get messages from many other applications as well  Is there a way to filter this and show only messages from my own application only

User · Answer

ADT v15 for Eclipse let you specify an application name (which is actually the package value in your androidmanifest.xml).

I love being able to filter by app, but the new logcat has a bug with the autoscroll. When you scroll up a little to look at previous logs, it automatically scrolls back to the bottom in a couple seconds. It seems scrolling 1/2 way up the log does keep it from jumping back to the bottom, but that's often useless.

EDIT: I tried specifying an app filter from the command-line -- but no luck. If someone figures this out OR how to stop the autoscroll, please let me know.

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On Windows 10  using Ionic  what worked great to me was combine  findstr  with the  INFO CONSOLE  generated by all App messages   So  my command in command line is   adb logcat   findstr INFO CONSOLE

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In linux  this worked for me   adb logcat   grep  adb shell ps   grep your package   awk   print  2

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Using Windows command prompt  adb logcat -d   findstr  lt package gt     This was first mentioned by jj   but it took me ages to find it in the comments

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Try  Window -  Preferences -  Android -  LogCat  Change field  Show logcat view if      the value  VERBOSE   It helped me

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I tried to use Tom Mulcahy s answer but unfortunately it was not working for applications with multiple processes so I edit it to fit my needs      bin bash if        -ne 1    then echo  Illegal number of parameters   exit 1  fi echo  Lof for package name   1  PROCESSES  adb shell ps   grep   1    cut -c10-15  NUM OF PROCESSES  echo   PROCESSES    wc -l  if    NUM OF PROCESSES -eq 0    then echo  The application is not running    exit 1  fi COUNTER 1 for process in  PROCESSES  do         if    COUNTER -eq 1    then GREP TEXT      fi         GREP TEXT   process         if    COUNTER -eq  NUM OF PROCESSES    then GREP TEXT       else GREP TEXT       fi         let COUNTER COUNTER 1          if    COUNTER -gt  NUM OF PROCESSES    then break  fi   done adb logcat   grep -E   GREP TEXT

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This works for me with USB debugging  use your device s own logcat directly via shell  Connect the device and use  adb shell  Use the logcat when connected  logcat   grep com yourapp packagename

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I m not sure there s a way to only see system messages regarding your app  but you can filter based on a string   If you re doing a log within the program  you can just include a certain unique keyword  and filter based on that word

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If you are using Android Studio you can select the process from which you want to receive logcats   Here is the screenshot

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In addition to Tom Mulcahy s answer  if you want to filter by PID on Windows  console  you can create a little batch file like that    ECHO OFF     find the process id of our app  2nd token  FOR  F  tokens 1-2    A IN   adb shell ps    findstr com example my package   DO SET PID   B     run logcat and filter the output by PID adb logcat   findstr  PID

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Package names are guaranteed to be unique so you can use the Log function with the tag as your package name and then filter by package name   NOTE  As of Build Tools 21 0 3 this will no longer work as TAGS are restricted to 23 characters or less   Log  lt log level gt    lt your package name gt     message     adb -d logcat  lt your package name gt   lt log level gt    S  -d denotes an actual device and -e denotes an emulator  If there s more than 1 emulator running you can use -s emulator- lt emulator number gt   eg  -s emulator-5558    Example  adb -d logcat com example example I   S  Or if you are using System out print to send messages to the log you can use adb -d logcat System out I   S to show only calls to System out   You can find all the log levels and more info here  https   developer android com studio command-line logcat html  http   developer android com reference android util Log html  EDIT  Looks like I jumped the gun a little and just realized you were asking about logcat in Eclipse  What I posted above is for using logcat through adb from the command line  I m not sure if the same filters transfer over into Eclipse

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Since Android 7 0  logcat has --pid filter option  and pidof command is available  replace com example app to your package name   ubuntu terminal   Since Android 7 0   adb logcat --pid  adb shell pidof -s com example app    or  adb logcat --pid   adb shell pidof -s com example app    For more info about pidof command  https   stackoverflow com a 15622698 7651532

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If you are using Eclipse  press the green   sign in the logCat window below and put your package name  com example yourappname  in the by Application Name box  Also  choose any name comfortable to you in Filter Name box and click ok  You will see only messages related to your application when the filter you just added is chosen from the left pane in the logCat

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Now is possible to type tag nameofthetag or app nameoftheapp to filter without adding new filters to the saved filters bar

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Use -s       You should use your own tag  look at    http   developer android com reference android util Log html       Like     Log d  AlexeysActivity   what you want to log          And then when you want to read the log use    adb logcat -s AlexeysActivity       That filters out everything that doesn t use the same tag    Source

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For me this works in mac Terminal Got to the folder where you have adb then type below command in terminal    adb logcat MyTAG V AndroidRuntime E   S   Here it will filter all logs of MyTAG and AndroidRuntime

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In intelliJ  and probably in eclipse also  you can filter the logcat output by text webview  so it prints basically everything phonegap is producing

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For windows  you can use my PowerShell script to show messages for your app only  https   github com AlShevelev power shell logcat

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You can use below command to fetch verbose logs for your application package adb logcat com example myapp V   S Also if you have rolled out your app and you want to fetch error logs from released app  you can use below command  adb logcat AndroidRuntime E   S

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Give your log a name  I called mine  wawa       In Android Studio  go to Android-  Edit Filter Configurations     Then type in the name you gave the logs  In my case  it s called  wawa   Here are some examples of the types of filters you can do  You can filter by System out  System err  Logs  or package names

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Update May 17  It s been a few years  and thing have changed  And Eclipse is no longer officially supported  So here s two more up-to-date approaches   1  Android Studio   In the Android monitor toolbox  you can filter logcat per debuggable process  Normally  when you develop an application it is a debuggable process  Every once in a while I am having issues with this  and a do the following    Tools -  Android -  Enable ADB Integration   If it was already enabled  then toggle it off  and then back on Unplug and replug your mobile device    There are also options to filter via regex and the debug level  2  logcat-color  This is a nice python wrapper on top of adb logcat if you want to use a terminal based solution  The good thing about it is that you can save multiple configurations and simply reuse them  Filtering by tags is quite reliable  You can also filter by package to see logs of one or more apps only  but you start logcat-color right before launching your app   Old Answer   It seems that I can t comment to previous answers  so I will post a new one  This is a comment to Tom Mulcahy s answer  that shows how the command should change so as to work on most devices  since adb shell ps PID column is variable   NOTE  The command below works for the cases where you have connected many devices  So device id is needed  Otherwise  you can simply omit the brackets           1  To find out the column of pid  type   adb  -s DEVICE ID  shell ps   head -n 1   Now memorise the column number for the PID  Numbering starts from 1   2  Then type the following   adb  -s DEVICE ID  logcat   grep   adb  -s DEVICE ID  shell ps     grep  com example    awk -F       print  PUT COLUMN HERE      Simply put the column you memorised in PUT COLUMN HERE  e g   5  Caveat  Each time you re-run your application  you have to re-run the 2nd command  because the application gets a new PID from the OS

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Yet another variant of Gavriel s applog sh with support of several devices and applications with multiple processes      bin sh PKG  1 shift  APPIDS  adb    shell ps   awk -v PKG   PKG         NR    1  appcolumn 2  for  i 1  i lt  NF  i    if   i   PID    appcolumn i       index  0 PKG  print   appcolumn      paste -d    -s   echo  PID s   APPIDS  adb    logcat -v color   awk      3     APPIDS   print   0     Usage  applog sh com example my package  -s  lt specific device gt

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This is probably the simplest solution    On top of a solution from Tom Mulcahy  you can further simplify it like below   alias logcat  adb logcat   grep  adb shell ps   egrep   bcom your package name b    cut -c10-15     Usage is easy as normal alias  Just type the command in your shell   logcat   The alias setup makes it handy  And the regex makes it robust for multi-process apps  assuming you care about the main process only    Of coz you can set more aliases for each process as you please  Or use hegazy s solution      In addition  if you want to set logging levels  it is  alias logcat-w  adb logcat   W   grep  adb shell ps   egrep   bcom your package name b    cut -c10-15

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I wrote a shell script for filtering logcat by package name  which I think is more reliable than using  ps   grep com example package   cut -c10-15   It uses  proc  pid cmdline to find out the actual pid  then do a grep on logcat  https   gist github com kevinxucs 7340e1b1dd2239a2b04a

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Add filter    Specify names    Choose your filter

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This has been working for me in git bash     pid   adb shell ps   grep  lt package name gt    cut -c11-15    adb logcat   grep  pid

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Ubuntu    adb logcat -b all -v color --pid  adb shell pidof -s com packagename  With color and continous log of app

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This is obviously a question aimed at usage of Logcat from outside of the developer device  however if you want to display Logcat output on the device  programmatically   you just need this   Runtime getRuntime   exec  logcat     android os Process myPid         D      The   D at the end filters out every message below Debug log level but you can leave that out   To direct the output to  say  a TextView  see for example here

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Linux and OS X  Use ps grep cut to grab the PID  then grep for logcat entries with that PID  Here s the command I use   adb logcat   grep -F   adb shell ps   grep com asanayoga asanarebel    tr -s   space         cut -d    -f2      You could improve the regex further to avoid the theoretical problem of unrelated log lines containing the same number  but it s never been an issue for me   This also works when matching multiple processes   Windows  On Windows you can do   adb logcat   findstr com example package

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put this to applog sh     bin sh PACKAGE  1 APPPID  adb -d shell ps   grep    PACKAGE     cut -c10-15   sed -e  s    g   adb -d logcat -v long      tr -d   r    sed -e             N  s  n        grep -v           grep     APPPID      then  applog sh com example my package

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As a variant you can use third party script PID Cat by Jake Wharton  This script has two major advantages   shows log entries for processes from a specific application package color logcat  From documentation   During application development you often want to only display log messages coming from your app  Unfortunately  because the process ID changes every time you deploy to the phone it becomes a challenge to grep for the right thing  This script solves that problem by filtering by application package   An output looks like

[android] Filter LogCat to get only the messages from My Application in Android?

Examples related to android

Examples related to android-logcat