Making toasts with Kotlin and extension functions

With Kotlin extension functions it’s possible to display toasts as simple as this:

"This is my string".toast(context)

You’ll just need to define this extension function somewhere in your code:

fun Any.toast(context: Context, duration: Int = Toast.LENGTH_SHORT): Toast {
  return Toast.makeText(context, this.toString(), duration).apply { show() }
}

This solution especially shines when combined this with Kotlin’s string templates feature:

"click on ${position.name}".toast(context)

Look at the beauty of that!

For comparison, this is how you write the same code with Java:

String message = String.format("click on %d", position.name);
Toast.makeText(context, message, Toast.LENGTH_LONG).show()