CodeReferences.kt

//Earlier Approach:
// Receiver 
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if(resultCode == Activity.RESULT_OK && requestCode == REQUEST_CODE){
 	val dataStr = data?.getStringExtra("Value") ?:"NO Value"
        println(dataStr)
    }
} 

// Caller 
val intent = Intent(context, SecondActivity::class.java)
startActivityForResult(intent,REQUEST_CODE)

//New Approach:

//-------------------------------------- Explicit Calls ------------------------------------------------
// Receiver is lambda i.e. ActivityResultCallback
private val secondActivityLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
            if(it.resultCode== Activity.RESULT_OK){
                val dataStr = it.data?.getStringExtra("Value") ?:"NO Value"
                println(dataStr)
            }
    }

//Caller  
secondActivityLauncher.launch(Intent(this,SecondActivity::class.java))

//------------------------------------- Implicit Calls -------------------------------------------------
//Receivers
private val launchCamera = registerForActivityResult(ActivityResultContracts.TakePicturePreview()) {
        binding.ivLogo.setImageBitmap(it)
    }

private val launchGallery = registerForActivityResult(ActivityResultContracts.GetContent()) {
        binding.ivLogo.setImageURI(it)
    }

//Caller
launchCamera.launch(null)
launchCamera.launch("image/*")