Android, how to trigger onClick event when layout which is added is before all existing views

Question

I'm trying to create a small floating view which is displayed after some user interaction. This view is displaying 2 buttons. I have a problem with attaching the click event to these buttons and whole layout.

In short: Overlay window is displayed but buttons inside are not working.

I tried to use bringToFront method after the addView but without luck.

How can I do in the right way, please?

Many thanks for any advice.

Code snippet:

@Override
    public void onCreate() {
        try {
            super.onCreate();
            Logger.d("onCreate");
            mContext = this;
            resultServiceIntent = new Intent(this, ResultService.class);
            windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
            mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            mParentLayout = (LinearLayout) mInflater.inflate(R.layout.result_layout,
                    null);
            textViewSourceText = (TextView) mParentLayout.findViewById(R.id.textViewSourceText);
            textViewTranslatedText = (TextView) mParentLayout.findViewById(R.id.textViewTranslatedText);
            WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                    WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                    WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
                    PixelFormat.TRANSLUCENT);

            params.gravity = Gravity.TOP | Gravity.CENTER;
            //params.x = 0;
            //params.y = 100;

            // SET VALUES TO TEXT VIEWS
            textViewSourceText.setText(Translation.getInstance().getSourceText());
            textViewTranslatedText.setText(Translation.getInstance().getTranslatedText());

            mParentLayout.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    Logger.d("onTouch");
                    return true;
                }
            });

            Button b = (Button) mParentLayout.findViewById(R.id.closeButton);
            b.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Logger.d("Clicked close button");
                    //windowManager.removeView(mParentLayout);
                    stopService(resultServiceIntent);
                }
            });

            Button copyTranslation = (Button) mParentLayout.findViewById(R.id.copyTranslationButton);
            copyTranslation.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Logger.d("Clicked on the copy translation layout");
                    stopService(resultServiceIntent);

                    //TODO: move to separated method
                    ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
                    ClipData clip = ClipData.newPlainText("dwd", Translation.getInstance().getTranslatedText());
                    clipboard.setPrimaryClip(clip);
                    ToastHelper.showToastMessage(mContext,
                            mContext.getResources().getString(R.string.translation_copied_to_clipboard), false);

                }
            });
            windowManager.addView(mParentLayout, params);
            mParentLayout.bringToFront();

        } catch (Exception e) {
            Logger.e(e.getMessage());
            ToastHelper.showToastMessage(mContext,
                    mContext.getResources().getString(R.string.error_during_displaying_result),
                    Constants.Global.DEBUG_ENABLED);
            TrackingEventLogHelper.logException(e, Constants.Global.EXCEPTION,
                    mContext.getResources().getString(R.string.error_during_displaying_result), true);
        }
    }