Android Studio - Java - Intent from Child Activity Not Received in Parent Activity After Back Press

Question

This Intent from my SetListEditAdapter class launches my parent class SetListMasterViewActivity:

    private void openSetListDetails(int setListId) {
        if (openSetListMode == OpenSetListMode.OPEN) {
            Intent openSetListIntent;
            openSetListIntent = new Intent(context, SetListMasterViewActivity.class);
            openSetListIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); // Add the flag here
            openSetListIntent.putExtra("SET_LIST_ID", setListId);
            context.startActivity(openSetListIntent);
        } else {
            Intent intent;
            intent = new Intent(context, SetListDetailsActivity.class);
            intent.putExtra("SET_LIST_ID", setListId);
            context.startActivity(intent);
        }
        Log.d("SttList", "(SetListEditAdapter) line #59 - setListId: " + setListId);
        Log.d("SttList", "(SetListEditAdapter) line #61 - SetListMasterViewActivity launched with setListId: " + setListId);
    }

In the newly opened parent activity (SetListMasterViewActivity) I launch the child activity (SetListOpenViewActivity): Intent openViewIntent = new Intent(SetListMasterViewActivity.this, SetListOpenViewActivity.class);

            // Pass necessary data with the intent
            openViewIntent.putExtra("songId", selectedSong.getSongId());
            openViewIntent.putExtra("songName", selectedSong.getSongName());
            openViewIntent.putExtra("setId", setListId); // Assuming you need to pass the setListId
            openViewIntent.putExtra("songsList", new ArrayList<>(songsList)); // Convert List to ArrayList before passing

            // Start the activity
            openViewIntent.setFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
            startActivity(openViewIntent);

I receive the Intent in the child activity (SetListOpenViewActivity) without issue:

        Intent intent = getIntent();
        songId = intent.getLongExtra("songId", 0);
        songName = intent.getStringExtra("songName");
        setId = intent.getIntExtra("setId", 0);
        dbHelper = new DatabaseHelper(this);
        songsList = intent.getParcelableArrayListExtra("songsList");

When the "Back" button in the child activity is pressed, processing returns to the parent activity with this Intent:

                Intent resultIntent = new Intent();
                resultIntent.putExtra("lastViewedSongId", currentSongId);
                resultIntent.putExtra("lastViewedSongName", currentSongName);
                resultIntent.putExtra("backButtonClicked", true); // Include backButtonClicked flag
                setResult(RESULT_OK, resultIntent);
                Log.d("SttList", "(SetListOpenViewActivity) - line #120 - Intent contents: " + getIntent().getExtras());
                Log.d("SttList", "(SetListOpenViewActivity) - line #121 - Setting result intent: " + resultIntent);
                finish(); 

And in the parent activity I expect to receive the child's Intent here:

    @Override
    protected void onResume() {
        super.onResume();
        Log.d("SttList", "(SetListMasterViewActivity) - line #254 - onResume method start");
        // Check if the Intent contains the backButtonClicked flag
        Intent intent = getIntent();
        Log.d("SttList", "(SetListMasterViewActivity) - line #257 - Intent received: " + getIntent().getExtras());
        if (intent != null && intent.hasExtra("backButtonClicked")) {
            boolean backButtonClicked = intent.getBooleanExtra("backButtonClicked", false);
            Log.d("SttList", "(SetListMasterViewActivity) - line #260 - backButtonClicked: " + backButtonClicked);
            if (backButtonClicked) {
                // Handle the back button click
                Log.d("SttList", "(SetListMasterViewActivity) - line #263 - Back button clicked in child activity");

                // Process the backButtonClicked flag here or call onActivityResult if needed
                // ...
            }
        }
    }

However the Log.d output is referencing the Intent which is starting the parent activity:

 D  (SetListMasterViewActivity) - line #257 - Intent received: Bundle[{SET_LIST_ID=280}]

I have tried:

1. Using onActivityResult:

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Log.d("SttList", "(SetListMasterViewActivity) - line #216 - Received intent: " + data);
        Log.d("SttList", "(SetListMasterViewActivity) line #217 - requestCode: " + requestCode + ", resultCode: " + resultCode);
        if (resultCode == RESULT_OK && data != null) {
...

However none of the Log.d statements are reached.

2. tried adding this to the child activity:

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
    }

but again, in the parent none of the child's Intents are received.

Answer 1

According docs the method Activity.getIntent()

Return the intent that started this activity.

With call finish() you are not starting a new activity with intent (like do startActivity(intent). It just destroys the activity and pops up the previous activity from the back stack.

In order to return the result intent from the child activity you need to start it with startActivityForResult() and wait data inside onActivityResult(). But the modern way changed a little when Activity Result API appeared. Start from guide.