Question

我的kv文件第34行声明错误后收到无效数据。

'Invalid data after declaration')
ParserException: Parser: File "main.kv", line 34:  ...
   32: on_release: app.root.current = "newGame"
   33: MenuButton:
   34: text: "Load Game"
   35: on_release: app.root.current = "loadGame"
   36: MenuButton:  ...  Invalid data after declaration

我认为这个问题与屏幕管理器的实现有关。我最初是用纯python写的，工作得很好我用kv语言重写了主屏幕，并再次按预期工作。我将子菜单屏幕转换为vk语言，现在我收到错误。任何想法？
这是蟒蛇：

from kivy.lang import Builder
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.image import Image
from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition
from kivy.core.audio import SoundLoader
from plyer import vibrator

presentation = Builder.load_file('main.kv')

backgroundMusic = SoundLoader.load('sounds/intro.mp3')
buttonSound = SoundLoader.load('sounds/button.mp3')
backgroundMusic.play()

class Layout(BoxLayout): pass
class MenuLayout(BoxLayout): pass
class MenuButton(Button): pass
class MainMenuScreen(Screen): pass
class NewGameMenuScreen(Screen): pass
class LoadGameMenuScreen(Screen): pass
class TutorialMenuScreen(Screen): pass
class SettingsMenuScreen(Screen): pass
class ScreenManagement(ScreenManager): pass

class Uranium235App(App):

    def menuButtonPressed(event):
        buttonSound.play()

        try:
            vibrator.vibrate(.125)
        except NotImplementedError: pass

    def build(self):
        return presentation

if __name__ == '__main__':
    Uranium235App().run()

这是ky文件：

#:import FadeTransition kivy.uix.screenmanager

<MenuButton>:
    on_press: app.menuButtonPressed()
    size_hint_y: .125
    background_normal: "images/button.png"
    background_down: "images/buttonPressed.png"

<MenuLayout>:
    orientation: "vertical"

<Layout>:
    orientation: "vertical"
    Image:
        source: "images/banner.png"

<ScreenManagement>:
    transition: FadeTransition()
    MainMenuScreen:
    NewGameMenuScreen:
    LoadGameMenuScreen:
    TutorialMenuScreen:
    SettingsMenuScreen:


<MainMenuScreen>:
    name: "main"
    Layout:
        MenuLayout:
            MenuButton:
                text: "New Game"
                on_release: app.root.current = "newGame"
                MenuButton:
                text: "Load Game"
                on_release: app.root.current = "loadGame"
                MenuButton:
                text: "Tutorial"
                on_release: app.root.current = "tutorial"
                MenuButton:
                text: "Settings"
                on_release: app.root.current = "settings"

<NewGameMenuScreen>:
    name: "newGame"
    Layout:
        MenuLayout:
            MenuButton:
                text: "Conquest Human VS Human"
                MenuButton:
                text: "Choas Human VS Human"
                MenuButton:
                text: "Conquest Human VS CPU"
                MenuButton:
                text: "Choas Human VS Human"

<LoadGameMenuScreen>:
    name: "loadGame"
    Layout:
        MenuLayout:
            MenuButton:
                text: "Conquest Human VS Human"
                MenuButton:
                text: "Choas Human VS Human"
                MenuButton:
                text: "Conquest Human VS CPU"
                MenuButton:
                text: "Choas Human VS Human"

<TutorialMenuScreen>:
    name: "tutorial"
    MenuLayout:
        MenuButton:
                text: "Conquest Mode"
            MenuButton:
                text: "Choas Mode"

<SettingsMenuScreen>:
    name: "settings"
    Layout:
        MenuLayout:
            MenuButton:
                text: "Music"
                MenuButton:
                text: "Sound Effects"
                MenuButton:
                text: "Vibration"
                MenuButton:
                text: "Choas Human VS Human"

Answer 1

MenuButton:规则中有两个MainMenuScreen行的前两行缩进了四个空格。

Kivy Screen Manager在KV文件中声明后数据无效

1 个答案: