KeyboardUtils.java

import android.app.Activity;
import android.content.Context;
import android.graphics.Rect;
import android.support.design.widget.FloatingActionButton;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;

/**
 * Created by Hasan Mhd Amin on 9/15/2016.
 */
public class KeyboardUtils {


    public static void hideKeyboardOnClickOutside(View view, final Activity activity){
        view.setClickable(true);
        view.setFocusable(true);
        view.setFocusableInTouchMode(true);

        setupUI(view, activity);
    }

    private static void setupUI(View view, final Activity activity) {

        //Set up touch listener for non-text box views to hide keyboard.
        if (!(view instanceof EditText) && !(view instanceof FloatingActionButton)) {
            view.setOnTouchListener(new View.OnTouchListener() {

                public boolean onTouch(View v, MotionEvent event) {
                    hideSoftKeyboard(activity);
                    return false;
                }

            });
        }
        if (view instanceof ViewGroup) {

            for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {

                View innerView = ((ViewGroup) view).getChildAt(i);

                setupUI(innerView, activity);
            }
        }
    }




    public static void hideSoftKeyboard(Activity activity) {
        try {
            InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
        } catch (Exception e) {
        }
    }

    public static void showHideKeyboard(Activity activity) {
        try {
            InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
            inputMethodManager.toggleSoftInputFromWindow(activity.getCurrentFocus().getApplicationWindowToken(), InputMethodManager.SHOW_FORCED, 0);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void showSoftKeyboard(Activity activity, EditText editText) {
        InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
    }

    public static Boolean isKeyboardOpen(View parentView)
    {
        Rect r = new Rect();
        parentView.getWindowVisibleDisplayFrame(r);
        int screenHeight = parentView.getRootView().getHeight();
        int keypadHeight = screenHeight - r.bottom;
        if (keypadHeight > screenHeight * 0.15) { // 0.15 ratio is perhaps enough to determine keypad height.
            // keyboard is opened
            return true;
        } else {
            // keyboard is closed
            return false;
        }
    }
}