如何让 KivyMD Navigation Drawer 在单独的 .py 文件中调用另一个应用程序？

Question

我知道如何用 kivy 编写应用程序，我知道如何制作具有导航抽屉的 KivyMD 应用程序。我可以单独制作应用程序运行，但如何将两者结合起来？

我是编码新手，被困在这里。以下是两个仅用于培训目的的模型应用程序的代码。第一个是一个非常简单的应用程序，称为“+5 游戏”，允许用户单击一个按钮将 5 添加到总数中，然后显示在 GUI 中。

第二个是 KivyMD 应用程序，带有包含两个按钮的导航抽屉。一个转到主屏幕，一个转到“+5 游戏”

如何link导航中的按钮绘制到+5游戏？我该如何处理文件顶部的导入？

这是 +5 游戏的代码：

from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivymd.uix.label import MDLabel
from kivymd.uix.button import MDRectangleFlatButton


class ClickToAdd(MDApp):
    def build(self):
        self.screen = Screen()
        self.num = 0

        self.display_number = MDLabel(text="0", font_style="H1", halign="center",
                                      pos_hint={'center_x': 0.5, 'center_y': 0.8})
        self.add5_BTN = MDRectangleFlatButton(text="+5", pos_hint={'center_x': 0.5, 'center_y': 0.65},
                                              on_release=self.add5_CMD)

        self.screen.add_widget(self.display_number)
        self.screen.add_widget(self.add5_BTN)

        return self.screen

    def add5_CMD(self, *args):
        self.num = self.num + 5
        self.display_number.text = str(self.num)


ClickToAdd().run()

这是带有导航抽屉和屏幕管理器的 KivyMD 应用程序的主 GUI：

from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import ObjectProperty
from kivymd.app import MDApp

KV = '''
<ContentNavigationDrawer>:
    ScrollView:
        MDList:
            OneLineListItem:
                text: "Home"
                on_press:
                    root.nav_drawer.set_state("close")
                    root.screen_manager.current = "home"

            OneLineListItem:
                text: "Play +5 Game"
                on_press:
                    root.nav_drawer.set_state("close")
                    root.screen_manager.current = "plus5game"


Screen:
    MDToolbar:
        id: toolbar
        pos_hint: {"top": 1}
        elevation: 10
        title: "Navigation Drawer Test"
        left_action_items: [["menu", lambda x: nav_drawer.set_state("open")]]

    MDNavigationLayout:
        x: toolbar.height
        ScreenManager:
            id: screen_manager
            Screen:
                name: "home"
                MDLabel:
                    text: "Home Screen Stuff Goes Here"
                    halign: "center"

            Screen:
                name: "plus5game"
                MDLabel:
                    text: "+5 Game Goes here"
                    halign: "center"

        MDNavigationDrawer:
            id: nav_drawer

            ContentNavigationDrawer:
                screen_manager: screen_manager
                nav_drawer: nav_drawer
'''


class ContentNavigationDrawer(BoxLayout):
    screen_manager = ObjectProperty()
    nav_drawer = ObjectProperty()


class TestNavigationDrawer(MDApp):
    def build(self):
        return Builder.load_string(KV)


TestNavigationDrawer().run()

Answer 1

你不能运行一个 App 在另一个 App 里面，但是你可以在第一个 App 里面使用另一个 App 的内脏。在您的情况下，您可以像这样重新定义 Plus5 App：

from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivymd.uix.label import MDLabel
from kivymd.uix.button import MDRectangleFlatButton

class Plus5Screen(Screen):
    def __init__(self, **kwargs):
        super(Plus5Screen, self).__init__(**kwargs)
        self.num = 0

        self.display_number = MDLabel(text="0", font_style="H1", halign="center",
                                      pos_hint={'center_x': 0.5, 'center_y': 0.8})
        self.add5_BTN = MDRectangleFlatButton(text="+5", pos_hint={'center_x': 0.5, 'center_y': 0.65},
                                              on_release=self.add5_CMD)

        self.add_widget(self.display_number)
        self.add_widget(self.add5_BTN)

    def add5_CMD(self, *args):
        self.num = self.num + 5
        self.display_number.text = str(self.num)


class ClickToAdd(MDApp):
    def build(self):
        self.screen = Plus5Screen()
        return self.screen

if __name__=='__main__':
    ClickToAdd().run()

并保存这是一个名为 plus5.py 的文件。

然后在你的主 App 中，你可以在 'kv':

中引用它

KV = '''
#:import Plus5Screen plus5   # import the guts of the Plus5 game
<ContentNavigationDrawer>:
    ScrollView:
        MDList:
            OneLineListItem:
                text: "Home"
                on_press:
                    root.nav_drawer.set_state("close")
                    root.screen_manager.current = "home"

            OneLineListItem:
                text: "Play +5 Game"
                on_press:
                    root.nav_drawer.set_state("close")
                    root.screen_manager.current = "plus5game"


Screen:
    MDToolbar:
        id: toolbar
        pos_hint: {"top": 1}
        elevation: 10
        title: "Navigation Drawer Test"
        left_action_items: [["menu", lambda x: nav_drawer.set_state("open")]]

    MDNavigationLayout:
        x: toolbar.height
        ScreenManager:
            id: screen_manager
            Screen:
                name: "home"
                MDLabel:
                    text: "Home Screen Stuff Goes Here"
                    halign: "center"

            Plus5Screen:  # this creates the guts of the Plu5 game
                name: "plus5game"

        MDNavigationDrawer:
            id: nav_drawer

            ContentNavigationDrawer:
                screen_manager: screen_manager
                nav_drawer: nav_drawer
'''

如何让 KivyMD Navigation Drawer 在单独的 .py 文件中调用另一个应用程序？

How do I get KivyMD Navigation Drawer to call another app in a separate .py file?

python

kivy

kivy-language

kivymd