77.4 Adding the Activity Launchers

Following the steps outlined in the chapter entitled “Android Explicit Intents – A Worked Example”, we need to begin by registering activity launchers to handle the creation, opening and saving of file content. Within the MainActivity.kt file, add a launcher for each of the three actions as follows:

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import androidx.activity.result.ActivityResult

import androidx.activity.result.contract.ActivityResultContracts

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    val startOpenForResult = registerForActivityResult(

        ActivityResultContracts.StartActivityForResult()) {

            result: ActivityResult ->

        if (result.resultCode == Activity.RESULT_OK) {

            result.data?.let {

   &...