[英]My RootWidget(ScreenManager) isn't initializing my program with kivy/python
I'm writing a python script with a kv script outside it for formatting.我正在编写一个带有 kv 脚本的 python 脚本,用于格式化。
I have 2 basic screens thus far.到目前为止,我有 2 个基本屏幕。 I can load 1 screen into a preview but things fall apart when I try 2 screens.
我可以将 1 个屏幕加载到预览中,但是当我尝试 2 个屏幕时,事情会崩溃。
I get this error:我收到此错误:
kivy.uix.screenmanager.ScreenManagerException: ScreenManager accepts only Screen widget.
Here's my python code:这是我的python代码:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import Screen, ScreenManager
Builder.load_file("design.kv")
class Intro(Screen):
def go_settings(self):
self.manager.current = "settings"
pass
class Settings(Screen):
print("In settings")
pass
class RootWidget(ScreenManager):
pass
class MainApp(App):
def build(self):
return RootWidget()
if __name__ == "__main__":
MainApp().run()
My kv code, titled "design.kv":我的 kv 代码,标题为“design.kv”:
<Intro>:
GridLayout:
cols: 1
Label:
text: "Intro"
Button:
text: "Settings"
on_press: root.go_settings()
<Settings>:
GridLayout:
cols: 1
Label:
text: "Settings"
<RootWidget>:
Intro:
name: "intro"
Settings: #will work if I comment this line and below
name: "settings"
Not sure what's going on.不知道发生了什么。 Thanks for the help!
谢谢您的帮助!
Alright, I think I got it.好吧,我想我明白了。
I need to change the names of我需要更改名称
Intro
and和
Settings
to到
IntroScreen
and和
SettingsScreen
It seemed to work for me.它似乎对我有用。 Never thought the name I'd give would matter.
从来没有想过我给的名字会很重要。
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