I don't know why when I run, the window won't show the buttons that I've added Here is my code
from kivy.app import App
from kivy.metrics import dp
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.stacklayout import StackLayout
from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
class StackLayoutExample(StackLayout):
def __int__(self, **kwargs):
super().__init__(**kwargs)
b = Button(text="A", size_hint=(0.2, 0.2))
self.add_widget(b)
class TheLabApp(App):
pass
TheLabApp().run()
and the .kv file is simply this:
StackLayoutExample: