Why use "ButterKnife" in my app to bind callbacks to methods?

Question

In a sense of improvement, when should I Bind Android views and callbacks to fields and methods? // http://jakewharton.github.io/butterknife/

Answer 1

when should I Bind Android views and callbacks to fields and methods

When you can. This lib reduces boilerplate code like findViewById() or setOnClickListener(). You will gain in readability too.

But like @Angelina said, ButterKnife is not useful in Kotlin