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Note:
This question is a duplicate of Filter log messages by PID or application package in Android.
But there is no correct answer to that question & it is very very old.

I can't make any changes in the app codebase as suggested in the accepted answer, I can only access the app build.

As per Android Docs: https://developer.android.com/studio/command-line/logcat#alternativeBuffers
We should be able to filter logs of a given application using the command:
adb logcat --pid=<pid>

--pid= ... Only print logs from the given PID.

But I am getting an error "unrecognized option" when I enter it in cmd.

Got PID of application using:
adb shell ps <app-package-name>

Note: Want a solution without using cmd alone, not using Android Studio.

Abhimanyu
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1 Answers1

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For adb --pid command to work , the device/emulator in which you have tired capturing the logcat messages should atleast be Android 7.0 . Otherwise this command will not work.

if you have device with android 7.0 above , then try this command 

adb logcat --pid=19816 *:D

replace your pid value and * means (any tag) : D meas DEBUG severity log messages

if you have device which is older versions , you can search specific logcat messages based on your package name string or given tag strings like this 

adb logcat | findstr <PACKAGENAME OR TAGS>
Hasif Seyd
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