CODEWITHSUNDEEP
androidkotlintimber-android
Ethan_AI
Ethan_AI

Reputation: 1049

Timber Not Logging in Kotlin Android

Timber is a great library for logging in Android. In Kotlin classes though, doesn't output anything. How can I fix this?

MainActivity.kt code:

Timber.e("Timber Log 1")
Log.e("MainActivity", "Log 1")

Gradle: I've tried the regular Java Timber:

implementation 'com.jakewharton.timber:timber:4.7.1'

And this Kotlin specific wrapper:

implementation 'com.github.ajalt:timberkt:1.5.1'

Same result. No output with either. Only from the Log.e()

Upvotes: 34

Views: 17873

Answers (5)

Rajen Trivedi
Rajen Trivedi

Reputation: 43

Check Initialization: Ensure that you've properly initialized Timber in your application. It's usually done in the onCreate method of your Application class.

   class MyApplication : Application() {
       override fun onCreate() {
           super.onCreate()
           if (BuildConfig.DEBUG) {
               Timber.plant(Timber.DebugTree())
           }
       }
   }

Just make sure you are importing BuildConfig from the correct location. The correct way is: should be configured appropriately in your project's Gradle files for example import com.example.appname.BuildConfig. If it still does not work, try import androidx.viewbinding.BuildConfig

Remember to make sure that your app's build configuration is set up correctly in your build.gradle files to ensure that BuildConfig.DEBUG behaves as expected. Debug and release configurations should be configured appropriately in your project's Gradle files.

Ensure that there is no space between the words in the tag. Otherwise, the tag you add to logcat will only display according to the first word. Briefly, space is not counted by logcat.

Upvotes: 1

MikkelT
MikkelT

Reputation: 815

Probably late to the party but my problem was the my phone was set to "Charge only" and not "file transfer". Apparently I was allowed to build and run, but logs were blocked

EDIT Another solution:

Check your RUN tab in the bottom of Android Studio. Sometimes the logs get output to there instead

Upvotes: 2

Alex Palance
Alex Palance

Reputation: 101

In my case it was wrong BuildConfig import

import org.koin.android.BuildConfig

but my app has

import com.company.example.BuildConfig

Upvotes: 5

AFA
AFA

Reputation: 1019

I have faced same problem, using Kotlin and Android studio 3.6 Follow these steps:

  1. Add the following in build.gradle(Module: App)

    implementation 'com.jakewharton.timber:timber:4.7.1'

  2. Initialize Timber in Application Class:

    class MyApp : Application() {

    override fun onCreate() {
        super.onCreate()

        if(BuildConfig.DEBUG){
            Timber.plant(Timber.DebugTree())
        }
    }
}

  3. Add the Application class(MyApp) to the Manifest (AndroidManifest.xml)

    <application
    android:name=".MyApp"

Now you can use Timber: Timber.i("Timber logs")

Also can use custom tags if you wish: Timber.tag("Yo").I("used custom tag for logs")

Upvotes: 28

Pavneet_Singh
Pavneet_Singh

Reputation: 37404

The first step of Timber is to plant the tree as mentioned in docs

Behavior is added through Tree instances. You can install an instance by calling Timber.plant. Installation of Trees should be done as early as possible. The onCreate of your application is the most logical choice.

And use the debugTree

The DebugTree implementation will automatically figure out from which class it's being called and use that class name as its tag. Since the tags vary

If you don't do this then you will have no logs entry and do this as soon as possible, like in oncreate or better inside application class so do this

Timber.plant(Timber.DebugTree());

Upvotes: 38

Related Questions