Custom Result Contract Kotlin Class

CustomContract.kt

class CustomContract : ActivityResultContract<String, String?>() {
 const val DATA = "data"
 const val INPUT_DATA = "input_data"

    override fun createIntent(context: Context, input: String?): Intent {
        val intent = Intent(context, DummyResultActivity::class.java) 
        intent.putExtra(INPUT_DATA, input)
        return intent
    }

    override fun parseResult(resultCode: Int, intent: Intent?): String? {
        return when (resultCode) {
          //Transforming our result to required format before returning it
            Activity.RESULT_OK -> intent?.getStringExtra(DATA)
            else -> null
        }
    }
}