Merge "Fixing a memory leak with notifications" into pi-dev

            if (mUiOffloadThread == null) {

                mUiOffloadThread = Dependency.get(UiOffloadThread.class);

            }

            if (view.isAttachedToWindow()) {

                mUiOffloadThread.submit(() -> pendingIntent.registerCancelListener(listener));

            }

            view.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {

                @Override

                public void onViewAttachedToWindow(View v) {