Log.e with Kotlin

As we have used Log.e() for logging error with java code. I was looking for same functionality with Kotlin. Though i have found Logger class

val Log = Logger.getLogger(MainActivity::class.java.name)
Log.warning("Hello World")

It is showing log in android studio logcat.

But does there any way to print log in red color the same way Log.e() does?

4 Answers

You can use log like this Log.d(TAG, "my Message") in KOTLIN

Log.e() will work perfectly in Kotlin.

In Kotlin, we also have a Logger class to log something.

Logger.getLogger(Test::class.java.name).warning("Hello..")

Otherwise, you have to use some other library like: kotlin-logging, anko logging etc.

As Kotlin guarantee 100% interoperable with Java and Android, you can use Log or any java class in kotlin also.

If you insist to use Logger class, you can get the same output as Log#e using Logger#severe

Anyway, I recommend to use Timber or similar. There are many avantages on using it and using. Android's Log class logs all your outputs in any enviroment, and also consumes machine resources that you should get rid in production.

You can use all your java classes from Kotlin, so Log.e( ) in java is exactly the same as Log.e( ) in Kotlin.

If you want extra capabilities like automatically infering the tag string, you can use something like AnkoLogger