操作2个.kv文件的多个.kv文件

Question

大家好，对于那些从我的上一个问题在这里，抱歉我没有完成我的游戏由于这个问题，抓住了我在决赛中，所以这是我有一个带有2个“开始”按钮"START1“和"START2”的菜单，所以我想要的是，每当我按下"START1“它会把我带到指定的.kv文件，当我按下"START2”它进入指定的.kv文件这里是我想要的图片和到目前为止我所做的一个样本

​

#: 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programmer.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()

我试着做两个构建器，但由于两个都有一个“菜单”屏幕覆盖了另一个，我想我可以这样说。所以我想只有一个菜单与2个开始按钮，如上面的图片，将使一个开始激活指定的.kv文件，谁能帮助，现在我没有关于如何做的线索，即时通讯仍在研究。

Answer 1

这里有一个如何按照你的要求做的例子。使用2个kv文件。这就是ScreenManager可以为您做的事情。

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，这两个kv文件都有MainScreen、GameScreen1和GameScreen2的实例。因此，kivy将为每个小部件创建两个独立的实例。