from kivymd.app import MDApp
from kivy.lang import Builder
from kivymd.uix.dialog import MDDialog
KV = """
Button
on_release:
app.popup();
"""
class MainActivity(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark" # <-----------------
return Builder.load_string(KV)
def popup(self):
dialog = MDDialog(
text="Hello",
size_hint=(0.4, 0.4)
)
dialog.open()
MainActivity().run()