Add Timber logging library

Add dependency to build.gradle:

dependencies {
    implementation ...
    implementation "com.jakewharton.timber:timber:4.7.1" // Update version if necessary
}

Build an application class (a base class that contains global application state for your entire app):

class PusherApplication: Application() {
    override fun onCreate() {
        Timber.plant(Timber.DebugTree())
        super.onCreate()
    }
}

Register the application in AndroidManifest.xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.dessertpusher">

    <application
        android:allowBackup="true"
        ...
        android:name=".PusherApplication"> // <- Here!
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Use Timber.x instead of Log.x when calling logs