Kotlin Programming Cookbook

How it works…

Let's see the source code of makeCall function:

fun Context.makeCall(number: String): Boolean {    try {        val intent = Intent(Intent.ACTION_CALL, Uri.parse("tel:$number"))        startActivity(intent)        return true    } catch (e: Exception) {        e.printStackTrace()        return false    }}

Beneath the wrapper, it's doing the same old way Android SDK used to do, that is, using an implicit intent of action Intent.ACTION_CALL.