Krillsson

    defaultConfig {
        buildConfigField "String[]", "LOG_CATEGORIES", "{" +
                "\"Default\"," +
                "\"Push\"," +
                "\"Registration\"" +
        "}"
        // ...
    }

Krillsson

object BuildConfigCategoryFilter: CategoryFilter() {
    override val categories: List<Category> = BuildConfig.LOG_CATEGORIES
        .map { Category(it) }
}

Krillsson

if (BuildConfig.DEBUG) {
    val filterCombination = Filter.level(Level.WARN) or BuildConfigCategoryFilter
    val channels = Log.Setup.Configuration()
        .addLogCatChannel(filter = filterCombination, default = true)
        .create()
    Log.Setup.addChannels(channels)
}

Krillsson

static def readProperty(propertiesFile, key, defaultValue){
    def properties = new Properties()
    if (propertiesFile.canRead()) {
        properties.load(propertiesFile.newDataInputStream())
        properties.get(key, defaultValue)
    } else {
        defaultValue
    }
}

Krillsson

    defaultConfig {
        buildConfigField "String[]", "LOG_CATEGORIES", readProperty(
                project.rootProject.file('local.properties'),
                "log.categories",
                "{\"Default\"}"
        )
        // ...
    }

Krillsson

class CrashlyticsChannel : ReleaseChannel() {

    override val filter: Filter = Filter.level(Level.ERROR)
    override val id: Int = Channels.Crashlytics
    override val default: Boolean = true

    override fun print(line: Line) {
        FirebaseCrashlytics.getInstance()
            .log("${line.level.name} ${line.category}: ${line.message}")
        line.throwable?.let { error ->

Krillsson

Filter.level(Level.ERROR) or Filter.categories(
        listOf(
            Categories.UI,
            Categories.User,
            Categories.Push
        )
    )

Krillsson

val channels = if(BuildConfig.DEBUG) {
    val categoriesFilter = Filter.categories(listOf(
        Categories.Default,
        // ...
    ))
    val filterCombination = Filter.level(Level.WARN) or categoriesFilter
    Log.Setup.Configuration()
        .addLogCatChannel(filter = filterCombination)
        .create()
} else {