How to override method when instantiating object in Kotlin?

Question

In Java, to override method when instantiating new object we can do this

public ActivityTestRule rule = new ActivityTestRule

        

Answer 1

If you want to create anonymous inner class, you should use object.

var rule = object : ActivityTestRule<MainActivity>(MainActivity::class.java) {
    override fun beforeActivityLaunched() {
        super.beforeActivityLaunched()
    }
}

See also Object Expressions and Declarations.