Kotlin registerForActivityResult

var resultLauncher = registerForActivityResult(StartActivityForResult()) { result ->
    if (result.resultCode == Activity.RESULT_OK) {
        // There are no request codes
        val data: Intent? = result.data
        doSomeOperations()
    }
}

fun openSomeActivityForResult() {
    val intent = Intent(this, SomeActivity::class.java)
    resultLauncher.launch(intent)
}

Source: stackoverflow.com

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