Preventing/catching “IllegalArgumentException: parameter must be a descendant of this view” error

Question

I have a ListView with some focusable components inside (mostly EditTexts). Yeah, I know this isn\'t exactly recommended, but in general, almost everything is w

Answer 1

I faced with the same problem and found out this solution - in OnGroupCollapseListener/OnGroupExpandListener and OnScrollListener for ExpandableListView i clear focuse and hide forced keyboard. Also do not forget to set in manifest for your activity windowSoftInputMode="adjustPan":

    expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {

        @Override
        public void onGroupCollapse(int groupPosition) {
            InputMethodManager inputManager = (InputMethodManager) getApplicationContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            if (getWindow().getCurrentFocus() != null) {
                inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
                getCurrentFocus().clearFocus();
            }
        }
    });

    expListView.setOnGroupExpandListener(new OnGroupExpandListener() {

        @Override
        public void onGroupExpand(int groupPosition) {
            InputMethodManager inputManager = (InputMethodManager) getApplicationContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            if (getWindow().getCurrentFocus() != null) {
                inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
                getCurrentFocus().clearFocus();
            }
        }
    });

    expListView.setOnScrollListener(new OnScrollListener() {

        @Override
        public void onScrollStateChanged(AbsListView view, int scrollState) {
            InputMethodManager inputManager = (InputMethodManager) getApplicationContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            if (getCurrentFocus() != null) {
                inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
                getCurrentFocus().clearFocus();
            }
        }

        @Override
        public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {}

    });

I don't know exactly OnGroupExpandListener is needed or no, it could be useless.