I am reading some code from developer in github setOnKeyList kotlinlang #android

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Title

j

Jason

10/05/2018, 9:03 AM

I am reading some code from developer in github. setOnKeyListener(View.OnKeyListener { v, keyCode, event -> if ((event?.action == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) { action(text.toString()) return@OnKeyListener true I dont know the purpose of line : return@OnKeyListener true

e

edwardwongtl

10/05/2018, 9:05 AM

It is a explicit return to the outer

OnKeyListener

lambda.

This kind of return is particularly useful when multiple lambdas are nested, and you want to return a value to outer lambda layer instead of the nearest one.

j

Jason

10/05/2018, 9:56 AM

Thank you @edwardwongtl

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