KeyboardUtils

KeyboardUtils.java

public class KeyboardUtils {

    public static void setKeyboardVisibilityListener(Activity activity, final KeyboardVisibilityListener keyboardVisibilityListener) {

        final View contentView = activity.findViewById(android.R.id.content);

        contentView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

            private int mPreviousHeight;

            @Override
            public void onGlobalLayout() {

                int newHeight = contentView.getHeight();

                if (mPreviousHeight != 0) {

                    if (mPreviousHeight > newHeight) {
                        // Height decreased: keyboard was shown
                        keyboardVisibilityListener.onKeyboardVisibilityChanged(true);
                    } else if (mPreviousHeight < newHeight) {
                        // Height increased: keyboard was hidden
                        keyboardVisibilityListener.onKeyboardVisibilityChanged(false);
                    } else {
                        // No change
                    }
                }

                mPreviousHeight = newHeight;
            }
        });
    }

    public interface KeyboardVisibilityListener {

        void onKeyboardVisibilityChanged(boolean keyboardVisible);
    }

    public static void hideKeyboard(Activity activity) {

        try {
            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
        } catch (Exception e) {
            Logger.e(e);
        }
    }
}