Я работаю над проектом и пытаюсь добавить к нему анимационную карту. я делаю пример из документации kivymd, но все же не могу заставить его работать. когда я запускаю пример, я получаю ошибку. Я обычно использую примеры для реализации в моей программе. мне нужна помощь, чтобы запустить пример.
это код
from kivy.lang import Builder
from kivy.factory import Factory
from kivy.properties import ObjectProperty
from kivymd.app import MDApp
from kivymd.toast import toast
from kivymd.uix.useranimationcard import MDUserAnimationCard
from kivymd.uix.button import MDIconButton
from kivymd.uix.list import ILeftBodyTouch
from kivy.uix.image import Image
# Your content for a contact card.
Builder.load_string(
"""
#:import get_hex_from_color kivy.utils.get_hex_from_color
<TestAnimationCard@BoxLayout>:
orientation: "vertical"
padding: dp(10)
spacing: dp(10)
size_hint_y: None
height: self.minimum_height
BoxLayout:
size_hint_y: None
height: self.minimum_height
Widget:
MDRoundFlatButton:
text: "Free call"
Widget:
MDRoundFlatButton:
text: "Free message"
Widget:
OneLineIconListItem:
text: "Video call"
IconLeftSampleWidget:
icon: "camera-front-variant"
TwoLineIconListItem:
text: "Call Viber Out"
secondary_text: "[color=%s]Advantageous rates for calls[/color]" % get_hex_from_color(app.theme_cls.primary_color)
IconLeftSampleWidget:
icon: "phone"
TwoLineIconListItem:
text: "Call over mobile network"
secondary_text: "[color=%s]Operator's tariffs apply[/color]" % get_hex_from_color(app.theme_cls.primary_color)
IconLeftSampleWidget:
icon: "remote"
"""
)
class IconLeftSampleWidget(ILeftBodyTouch, MDIconButton):
pass
class MainApp(MDApp):
user_animation_card = ObjectProperty()
def __init__(self, **kwargs):
self.title = "KivyMD Examples - User Animation Card"
self.theme_cls.primary_palette = "Teal"
super().__init__(**kwargs)
def build(self):
def main_back_callback():
toast("Close card")
if not self.user_animation_card:
self.user_animation_card = MDUserAnimationCard(
user_name="User Name",
path_to_avatar="path_to_avatar",
callback=main_back_callback,
)
self.user_animation_card.box_content.add_widget(Factory.TestAnimationCard())
self.user_animation_card.open()
if __name__ == "__main__":
MainApp().run()
это ошибка, которую я получаю
Traceback (most recent call last):
File "c:/Users/Allano/Desktop/exe/New folder (2)/MDtest.py", line 83, in <module>
MainApp().run()
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\app.py", line 855, in run
runTouchApp()
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\base.py", line 504, in runTouchApp
EventLoop.window.mainloop()
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\core\window\window_sdl2.py", line 747, in mainloop
self._mainloop()
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\core\window\window_sdl2.py", line 479, in _mainloop
EventLoop.idle()
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\base.py", line 339, in idle
Clock.tick()
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\clock.py", line 591, in tick
self._process_events()
File "kivy\_clock.pyx", line 384, in kivy._clock.CyClockBase._process_events
File "kivy\_clock.pyx", line 414, in kivy._clock.CyClockBase._process_events
File "kivy\_clock.pyx", line 412, in kivy._clock.CyClockBase._process_events
File "kivy\_clock.pyx", line 167, in kivy._clock.ClockEvent.tick
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivy\uix\boxlayout.py", line 323, in do_layout
c.size = (w, h)
File "kivy\properties.pyx", line 497, in kivy.properties.Property.__set__
File "kivy\properties.pyx", line 1371, in kivy.properties.ReferenceListProperty.set
File "kivy\properties.pyx", line 599, in kivy.properties.Property.dispatch
File "kivy\_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
File "kivy\_event.pyx", line 1120, in kivy._event.EventObservers._dispatch
File "C:\Users\Allano\Anaconda3\lib\site-packages\kivymd\utils\fitimage.py", line 63, in adjust_size
(img_x, img_y) = self.image.texture.size
AttributeError: 'NoneType' object has no attribute 'size'