Tag character limit on Android 6

[dkarv]

I tried to use the logger on an Android 6 device and receive an exception:

FATAL EXCEPTION: main
Process: <package>, PID: 10196
java.lang.RuntimeException: Unable to start activity ComponentInfo{<package>/<package>.LoginActivity}: java.lang.IllegalArgumentException: Log tag "<package>.LoginViewModel" exceeds limit of 23 characters

	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2450)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2520)
	at android.app.ActivityThread.-wrap11(ActivityThread.java)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loop(Looper.java:148)
	at android.app.ActivityThread.main(ActivityThread.java:5466)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Log tag "<package>.LoginViewModel" exceeds limit of 23 characters

	at android.util.Log.isLoggable(Native Method)
	at io.github.oshai.internal.KLoggerAndroid.<init>(KLoggerAndroid.kt:104)
	at io.github.oshai.KotlinLogging.logger(KotlinLogging.kt:34)
	at io.github.oshai.KotlinLogging.logger(KotlinLogging.kt:13)
	at <package>.LoginViewModel.<init>(LoginViewModel.kt:25)
        ...

I removed the full package name and replaced it with . The package + class name (LoginViewModel) has 46 characters.

Android documentation:
https://developer.android.com/reference/android/util/Log.html#isLoggable(java.lang.String,%20int)

It seems like Logback for Android handles the character limit:
https://github.com/tony19/logback-android/blob/d6ed2017fb87e30e8b32d794523ac29c24123c87/logback-android/src/main/java/ch/qos/logback/classic/android/LogcatAppender.java#L46

Is there any workaround we could use?

[github-actions]

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[oshai]

what version of kotlin-logging are you using? the default we use is slf4j (in v5) which can be redirect to logback which will handle this (unless add -Dkotlin-logging-to-android-native).

[dkarv]

Sorry my fault, we were still using the 4.0.0-beta-27 version. After upgrading to 5.0.0 it works as expected. The logs are sent to slf4j / logback-android and the tag is shortened.
Thanks for your quick help!