LoloCG
commented
1 day ago The error occurs:
- when changing from home screen to
- Screen 2, 3, 2, 3
- Then trying to return from the last one back.
Error message:
File "c:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\BottomNavBar\kivy_app.py", line 166, in <module>
MainApp().run()
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\app.py", line 956, in run
runTouchApp()
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\base.py", line 574, in runTouchApp
EventLoop.mainloop()
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\base.py", line 339, in mainloop
self.idle()
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\base.py", line 383, in idle
self.dispatch_input()
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\base.py", line 334, in dispatch_input
post_dispatch_input(*pop(0))
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\base.py", line 263, in post_dispatch_input
listener.dispatch('on_motion', etype, me)
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\core\window\__init__.py", line 1709, in on_motion
self.dispatch('on_touch_down', me)
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\core\window\__init__.py", line 1726, in on_touch_down
if w.dispatch('on_touch_down', touch):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\uix\widget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\uix\widget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\uix\widget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\uix\widget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "kivy\\_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivymd\uix\behaviors\ripple_behavior.py", line 361, in on_touch_down
super().on_touch_down(touch)
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\uix\behaviors\button.py", line 151, in on_touch_down
self.dispatch('on_press')
File "kivy\\_event.pyx", line 727, in kivy._event.EventDispatcher.dispatch
File "kivy\\_event.pyx", line 1307, in kivy._event.EventObservers.dispatch
File "kivy\\_event.pyx", line 1191, in kivy._event.EventObservers._dispatch
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\lang\builder.py", line 60, in custom_callback
exec(__kvlang__.co_value, idmap)
File "c:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\BottomNavBar\main_layout.kv", line 16, in <module>
on_press: app.go_back_screen()
^^^^^^^^
File "c:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\BottomNavBar\kivy_app.py", line 109, in go_back_screen
self.sm.remove_widget(self.sm.get_screen(recent_screen))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Lolo\Desktop\Programming\GITRepo\SampleKivyApp\venv\Lib\site-packages\kivy\uix\screenmanager.py", line 1078, in get_screen
raise ScreenManagerException('No Screen with name "%s".' % name)
kivy.uix.screenmanager.ScreenManagerException: No Screen with name "None".```
the logs shown in terminal:
```Loading screen "home_screen"
In screen "home_screen"
Added home_screen to manager.
[INFO ] [Base ] Start application main loop
Switching to screen: second_screen
Loading screen second_screen
Adding SecondScreen layout
Added second_screen to manager.
In screen second_screen
Leaving home_screen.
Switching to screen: third_screen
Loading screen third_screen
Adding SecondScreen layout
Added third_screen to manager.
In screen third_screen
Leaving second_screen.
Switching to screen: second_screen
Loading screen second_screen
Adding SecondScreen layout
Added second_screen to manager.
In screen second_screen
Leaving third_screen.
Switching to screen: third_screen
Loading screen third_screen
Adding SecondScreen layout
Added third_screen to manager.
In screen third_screen
Leaving second_screen.
Going back to screen: third_screen
Going back to screen: second_screen
Loading screen second_screen
Adding SecondScreen layout
In screen second_screen
Added second_screen to manager.
[INFO ] [Base ] Leaving application in progress...```
Not sure how, but returning to a duplicate page makes the application crash