How do I maintain the Immersive Mode in Spinner?

Question

I use immersive-sticky mode to hide the navigation bar and action bar:

@TargetApi(19)
private void setImmersiveMode() {
    if (Build.VERSION.SDK_INT >= 1         


        

Answer 1

For everyone who, like me, will start rewriting solution pasted by @Quinn from Kotlin to Java and later they will find out that on the linked git repo is the solution in Java also, I am pasting it here:

import android.widget.ListPopupWindow;
import android.widget.PopupWindow;
import android.widget.Spinner;

public static void avoidSpinnerDropdownFocus(Spinner spinner) {
    try {
        Field listPopupField = Spinner.class.getDeclaredField("mPopup");
        listPopupField.setAccessible(true);
        Object listPopup = listPopupField.get(spinner);
        if (listPopup instanceof ListPopupWindow) {
            Field popupField = ListPopupWindow.class.getDeclaredField("mPopup");
            popupField.setAccessible(true);
            Object popup = popupField.get((ListPopupWindow) listPopup);
            if (popup instanceof PopupWindow) {
                ((PopupWindow) popup).setFocusable(false);
            }
        }
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
}