多个 .kv 文件处理 2 个 .kv 文件

Question

大家好，对于我上一个问题的人来说，对不起，由于这个问题让我在决赛中遇到了问题，所以我没有完成我的游戏，所以我有一个带有 2 个“START”按钮“START1”和“START2”的菜单“所以我想要的是，每当我按“START1”时，它会将我带到指定的 .kv 文件，当我按“START2”时，它会转到指定的 .kv 文件，这是我想要的图片和我所做的示例到目前为止

#: import FadeTransition kivy.uix.screenmanager.FadeTransition


ScreenManagement:

    transition: FadeTransition()
    MainScreen:
    GameScreen1:
    GameScreen2:


  Button:

    size_hint: 0.2,0.1
    font_size: 20


  MainScreen:

    name: "Start"

    Button:

        on_release: app.root.current = "game1"
        text: "START"
        color: 1,0,0,1

GameScreen1:

    name: "game1"

    Button:

        pos_hint: {"right":1,"top":0.5}
        color: 1,0,0,1 
        on_release: app.root.current = "game2"
        text: "Next"
        background: 0,1,0,1

    Label: 

        pos_hint: {"x": 0, "y": 0}
        text: "Python\n\n Ruby"
        font_size:40

    Button:

        text: "HOME"
        on_release: app.root.current = "Start"
        pos_hint: {"x": 0.1, "y": 0}


GameScreen2:

    name: "game2"

    Button:

        pos_hint: {"right":1,"top":0.5}
        color: 1,0,0,1 
        on_release: app.root.current = "game1"
        text: "Next"
        background: 0,1,0,1

    Label: 

        pos_hint: {"x": 0, "y": 0}
        text: "Assembly\n\n Prolog"
        font_size:40

    Button:

        text: "HOME"
        on_release: app.root.current = "Start"
        pos_hint: {"x": 0.1, "y": 0}

这就是程序员.kv

#: import FadeTransition kivy.uix.screenmanager.FadeTransition


ScreenManagement:
    transition: FadeTransition()
    MainScreen:
    GameScreen1:
    GameScreen2:


Button:

    size_hint: 0.2,0.1
    font_size: 20


MainScreen:

    name: "Start"

    Button:

        on_release: app.root.current = "game1"
        text: "START"
        color: 1,0,0,1

GameScreen1:

    name: "game1"

    Button:

        pos_hint: {"right":1,"top":0.5}
        color: 1,0,0,1 
        on_release: app.root.current = "game2"
        text: "Next"
        background: 0,1,0,1

    Label: 

        pos_hint: {"x": 0, "y": 0}
        text: "HELLO"
        font_size:40

    Button:

        text: "HOME"
        on_release: app.root.current = "Start"
        pos_hint: {"x": 0.1, "y": 0}


GameScreen2:

    name: "game2"

    Button:

        pos_hint: {"right":1,"top":0.5}
        color: 1,0,0,1 
        on_release: app.root.current = "game1"
        text: "Next"
        background: 0,1,0,1

    Label: 

        pos_hint: {"x": 0, "y": 0}
        text: "WORLD"
        font_size:40

    Button:

        text: "HOME"
        on_release: app.root.current = "Start"
        pos_hint: {"x": 0.1, "y": 0}

这就是social.kv

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.widget import Widget
from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition
from kivy.uix.label import Label



class MainScreen(Screen):

    pass

class GameScreen1(Screen):

    pass

class GameScreen2(Screen):

    pass


class ScreenManagement(ScreenManager):

    pass

presentation = Builder.load_file("social.kv")
presentation = Buider.load_file("programmer.kv")

class Myapp(App):

    def builder(self):

        return presentation

if __name__ == "__main__":
    Myapp().run()

我尝试制作 2 个构建器，但由于两者都有一个“菜单”屏幕覆盖了另一个，我想我可以这样说。所以我只想有 1 个菜单，上面有 2 个 START 按钮，就像上图一样，它可以让你开始激活指定的 .kv 文件，谁能帮忙，现在我不知道如何做到这一点，我还在研究。

Answer 1

下面是一个示例，说明如何按照您的要求进行操作。使用 2 个kv 文件。这就是 ScreenManager 会为你做的事情。

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout

presentation1 = Builder.load_string('''
Button:
    text: 'This is presentation1'
    on_press: app.switchToRoot2()
''')

presentation2 = Builder.load_string('''
Button:
    text: 'This is presentation2'
    on_press: app.switchToRoot1()
''')

class MultiplKVApp(App):
    def build(self):
        self.root_layout = FloatLayout()
        self.root_layout.add_widget(presentation1)
        return self.root_layout

    def switchToRoot2(self, *args):
        self.root_layout.clear_widgets()
        self.root_layout.add_widget(presentation2)

    def switchToRoot1(self, *args):
        self.root_layout.clear_widgets()
        self.root_layout.add_widget(presentation1)

MultiplKVApp().run()

请注意，您的两个kv 文件都有MainScreen、GameScreen1 和GameScreen2 的实例。所以 kivy 将为每个小部件创建两个独立的实例。