![](/img/trans.png)
[英]Python/Kivy - How to “connect” a function and a label in kv/py files
[英]Python kivy app with kv and py files for every screen
请解释我如何在 kivy 上创建应用程序,以便每个屏幕都有单独的 py 和 kv 文件。 包括从屏幕调用的屏幕。 其实我们需要一个窗体的示例应用:Mainscreen-> 1screen-> 2screen
这是一种方法:
主要.py:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager
class WindowManager(ScreenManager):
pass
class TestApp(App):
def build(self):
return Builder.load_file('main.kv') # this method can be eliminated if `main.kv` is renamed to `test.kv`
if __name__ == '__main__':
TestApp().run()
主.kv:
# import the python files defining the Screens
#: import Screen1 screen1.Screen1
#: import Screen2 screen2.Screen2
# include the kv files for the other Screens
#: include screen1.kv
#: include screen2.kv
WindowManager:
Screen1:
Screen2:
屏幕1.py:
from kivy.uix.screenmanager import Screen
class Screen1(Screen):
pass
screen1.kv:
<Screen1>:
name: 'screen1'
BoxLayout:
Label:
text: 'Screen1'
Button:
text: 'back'
on_release: app.root.current = 'screen2'
屏幕2.py:
from kivy.uix.screenmanager import Screen
class Screen2(Screen):
pass
screen2.kv:
<Screen2>:
name: 'screen2'
BoxLayout:
Label:
text: 'Screen2'
Button:
text: 'back'
on_release: app.root.current = 'screen1'
当然,有不同的方法可以做到这一点。 另一种方法是导入main.py
中的所有py
文件,并在main.py
中为每个kv
文件使用Builder.load_file()
如果您将所有文件(除了 main.py)放在名为subs
的子文件夹中,那么您只需对 main.py 进行更改:
class TestApp(App):
def build(self):
return Builder.load_file('subs/main.kv')
并更改main.kv
:
# import the python files defining the Screens
#: import Screen1 subs.screen1.Screen1
#: import Screen2 subs.screen2.Screen2
# include the kv files for the other Screens
#: include subs/screen1.kv
#: include subs/screen2.kv
WindowManager:
Screen1:
Screen2:
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.