How to delete audio file record and remove checked recyclerview item after user clicks 'Yes' on alert dialog - android-recyclerview

Question

I have an alert dialog that pops up when the user clicks the delete button.
Alert dialog
When the user clicks yes, I want the recyclerview item they selected to be removed and delete the file from storage.
The onClickListener that shows the alert dialog
findViewById<ImageButton>(R.id.btnDelete).setOnClickListener{
val mAlertDialog = AlertDialog.Builder(this#GalleryActivity)
mAlertDialog.setIcon(R.drawable.ic_delete_dialog) //set alertdialog icon
mAlertDialog.setTitle("Delete") //set alertdialog title
mAlertDialog.setMessage("Delete audio?") //set alertdialog message
mAlertDialog.setPositiveButton("Yes") { dialog, id ->
//perform some tasks here
Toast.makeText(this#GalleryActivity, "Deleted", Toast.LENGTH_SHORT).show()
}
mAlertDialog.setNegativeButton("No") { dialog, id ->
//perform som tasks here
Toast.makeText(this#GalleryActivity, "No", Toast.LENGTH_SHORT).show()
}
mAlertDialog.show()
}

Answer 1

Some folks enjoy code to words, so I will do the two
Steps
So let assume you are getting your AudioRecord from local database or remote source, I believe you will already have a function or an endpoints to delete. now let assume the endpoint or database is collecting array of checked item. maybe array of the Id.
So in your
class DeleteRecordFragment: DialogFragment() {
//Define an array collecting list of checked audio let assume
private var checkedAudio : ArrayList<String> = arrayOf()
//Let assume your database to be
private var database = MyDatabase()
as you check each item, you add the ID to > checkedAudio
now time to delete.
inside Yes dialog.
just call the function that delete and pass in the id of the array you are deleting
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
return activity?.let{ it ->
val alertBuilder = AlertDialog.Builder(it)
alertBuilder.setTitle("Delete record")
alertBuilder.setMessage("Are you sure you want to delete?")
alertBuilder.setPositiveButton("Yes",
DialogInterface.OnClickListener{ dialog, id ->
Log.d("delete", "Yes Pressed")
database.deleteSelectedItem(checkedAudio = checkedAudio)
//Now fetch new list from the data source or database.
database.fetchNewAudio()
//for adapter to be aware to sync., you can call
mAdapter.notifyDataSetChanged()
//but if you are using diffUtils, this should sync automatically
}).setNegativeButton("Cancel",
DialogInterface.OnClickListener{dialog, id ->
Log.d("delete", "Cancel Pressed")
})
alertBuilder.create()
} ?: throw IllegalStateException("Exception !! Activity is null !!")
}