Kotlin is a much more modern language which has many features that Java does not. Though Kotlin was designed to be interoperable with Java from the start and designed to run on the JVM, much has changed in 20 years.

ProGuard, which turns 20 this year, was originally created in the era of Java 1.4, Java Applets, J2ME and Sun Microsystems. Kotlin is used by over 60% of Android professional Android developers and it's estimated that 1 million professional software developers use Kotlin as 1 of their 3 primary languages.Ĭlearly, we are truly in a new age: the Age of Kotlin. Yet Kotlin is now the go-to language for Android development, and is becoming more popular for desktop and server application development. shortSnackBar (message: String, action: ( Snackbar.Kotlin is relatively young – only 11 years old – and Android has only had official support for Kotlin for five years. So, I just have all three of these and use them in appropriate cases. You could just use the context version of the function, but since it is Context and not Context? in fragments you would be calling the requireContext() function than the getContext() property. showToast (message: String, length: Int = Toast.LENGTH_SHORT) = Toast.makeText( this, message, length).show() showToast (message: String, length: Int = Toast.LENGTH_SHORT) = Toast.makeText(context, message, length).show() Extension functions Toasts internal fun AppCompatActivity.

This along with Android studio giving random auto complete suggestions makes it frustrating. No one likes typing out Toast.makeText(context,'My message',Toast.LENGTH_SHORT).show(), takes too much time for something so simple. Are an awesome way to extract and clean up code in your Android project.

Kotlin internal fun