Hide softkeyboard in android application if user tap outside EditText control

HideSoftkeyboardOnTap

protected void setupParent(View view) {
        //Set up touch listener for non-text box views to hide keyboard.
        if(!(view instanceof EditText)) {
            view.setOnTouchListener(new View.OnTouchListener() {
                public boolean onTouch(View v, MotionEvent event) {
                    hideSoftKeyboard();
                    return false;
                }
            });
        }
        //If a layout container, iterate over children
        if (view instanceof ViewGroup) {
            for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
                View innerView = ((ViewGroup) view).getChildAt(i);
                setupParent(innerView);
            }
        }
    }

    private void hideSoftKeyboard() {
        InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Activity.INPUT_METHOD_SERVICE);
        inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(), 0);
    }

Same code in C# for Xamarin:

protected void SetupParent(View view)
        {
            //Set up touch listener for non-text box views to hide keyboard.
            if (view.GetType() != typeof(EditText))
            {
                view.Touch += (sender, e) => 
                {
                    var inputManager = (InputMethodManager)GetSystemService(InputMethodService);
                    inputManager.HideSoftInputFromWindow(messagesRecyclerView.WindowToken, HideSoftInputFlags.None);
                };
            }

            //If a layout container, iterate over children
            if (view.GetType() != typeof(ViewGroup))
            {
                var v = (ViewGroup)view;
                for (int i = 0; i < v.ChildCount; i++)
                {
                    View innerView = ((ViewGroup)view).GetChildAt(i);
                    SetupParent(innerView);
                }
            }
        }

Your code is right way, but may be override onClick on other Views. Eg. Button onClick,...
In this case, you can add flag to view which need to handle tap to close keyboard is better.