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My first posting. I am unable to use NavigationView in full_screen mode. Any guidance would be appreciated. Here is an example where I have changed the .present argument from hide_title_bar=True to 'full_screen' from an on-line example found here. Despite specifying full_screen, it still appears as an overlay in the middle portion of my screen.

-Seriph

import ui


def make_button_item(action, image_name):
    return ui.ButtonItem(action=action, image=ui.Image.named(image_name))


class NavView(ui.View):
    def __init__(self):
        root_view = ui.load_view()
        root_view.left_button_items = [
            make_button_item(self.bt_close, "ionicons-close-24")
        ]
        root_view.right_button_items = [
            make_button_item(self.bt_subview, "ionicons-arrow-right-b-24")
        ]
        self.nav_view = ui.NavigationView(root_view)
        self.nav_view.present('full_screen') # hide_title_bar=True)

    def bt_subview(self, sender):
        sub_view = ui.load_view("switchview1.pyui")
        sub_view.name = "subview"
        sub_view["btn_Okay"].action = self.bt_action
        sub_view["btn_Cancel"].action = self.bt_action
        self.nav_view.push_view(sub_view)

    def bt_close(self, sender):
        self.nav_view.close()

    def bt_action(self, sender):
        print("action from " + sender.name)


NavView()

@seriph try "fullscreen" without the underscore, see here

@cvp Thank you. My program works now. Next time I will try the in-forum Search function rather that rely on an Internet search engine.

@seriph thé search function of the forum is not very good, I personally use Google search but I search "Pythonista forum xxxx"