I am trying to program a GUI with kivy in python. I had before this question already a Problem with my code that got resolved:
Kivy error while trying to change the screen
Now when I start the program the screen goes white and crashes without any error message.
I am trying to switch the Screen when I hit one of the button in the menu screen.
Stacktrace:
[INFO ] [Kivy ] v1.10.1
[INFO ] [Python ] v3.6.7 (default, Feb 28 2019, 07:28:18) [MSC v.1900 64 bit (AMD64)]
[INFO ] [Factory ] 194 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.5.0 NVIDIA 385.54'>
[INFO ] [GL ] OpenGL vendor <b'NVIDIA Corporation'>
[INFO ] [GL ] OpenGL renderer <b'GeForce GTX 1050 Ti/PCIe/SSE2'>
[INFO ] [GL ] OpenGL parsed version: 4, 5
[INFO ] [GL ] Shading version <b'4.50 NVIDIA'>
[INFO ] [GL ] Texture max size <32768>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
Process finished with exit code -1073741819 (0xC0000005)
Surface.py:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy_app_go.Control import HelperMethods
from kivy.properties import ObjectProperty
from kivy.graphics import Rectangle, Color, Line
from kivy.uix.label import Label
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.core.window import Window
from kivy.uix.screenmanager import FadeTransition
from functools import partial
class MenuScreen(Screen):
def __init__(self, **kwargs):
super(Screen, self).__init__(**kwargs)
self.ScreenSize = Window.size
self.HelperMethodsInst = HelperMethods()
self.app = App.get_running_app()
lytmain = FloatLayout(size=self.ScreenSize)
lytbutton = BoxLayout(pos_hint={"y": 0.1, "x": 0.15}, size_hint=(2, 0.6), orientation='vertical', size=self.ScreenSize)
lblHeadline = Label(text="Choose your Go Mode", font_size=40, pos_hint={"y": 0.8, "x": 0.325},
size_hint=(0.35, 0.15))
btnHvH = Button(text="Human vs Human", size_hint=(0.35, 0.15),
on_release=lambda *args: self.HelperMethodsInst.switch_screen(goal_screen="go_screen", Screenmanager=self.app.WindowManagerInst.get_ScreenManager))
btnHvB = Button(text="Human vs Bot", size_hint=(0.35, 0.15),
on_release=lambda *args: self.HelperMethodsInst.switch_screen(goal_screen="go_screen", Screenmanager=self.app.WindowManagerInst.get_ScreenManager))
btnBvB = Button(text="Bot vs Bot", size_hint=(0.35, 0.15),
on_release=lambda *args: self.HelperMethodsInst.switch_screen(goal_screen="go_screen", Screenmanager=self.app.WindowManagerInst.get_ScreenManager))
self.add_widget(lytmain)
lytmain.add_widget(lblHeadline)
lytmain.add_widget(lytbutton)
lytbutton.add_widget(btnHvH)
lytbutton.add_widget(btnHvB)
lytbutton.add_widget(btnBvB)
class GoScreen(Screen):
def __init__(self, **kwargs):
super(GoScreen, self).__init__(**kwargs)
self.ScreenSize = Window.size
lytmain = FloatLayout(size=self.ScreenSize)
btnBack = Button(text="Back", size_hint=(0.25, 0.1))
self.add_widget(lytmain)
lytmain.add_widget(btnBack)
class WindowManager(ScreenManager):
def __init__(self):
# self.sm = ScreenManager(transition=FadeTransition(duration=0.15))
self.add_widget(MenuScreen(name="menu_screen"))
self.add_widget(GoScreen(name="go_screen"))
@property
def get_ScreenManager(self):
return self
class Surface(App):
def __init__(self):
super().__init__()
self.WindowManagerInst = WindowManager()
def build(self):
return self.WindowManagerInst
@staticmethod
def create_Surface():
return Surface().run()
def run():
SurfaceInst = Surface()
HelperMethodsInst = HelperMethods()
Control.py:
from kivy.uix.screenmanager import ScreenManager, Screen
class HelperMethods:
def switch_screen(self, Screenmanager, goal_screen):
print("pressed")
print(screenmanager)
print(screen)
screenmanager = goal_screen
main.py:
from kivy_app_go.Surface import Surface
if __name__ == "__main__":
Surface.create_Surface()
Hope someone can help me ^^
In your WindowManager
class, you need to modify the __init__
method to include a call to super
:
class WindowManager(ScreenManager):
def __init__(self):
super(WindowManager, self).__init__()
# self.sm = ScreenManager(transition=FadeTransition(duration=0.15))
self.add_widget(MenuScreen(name="menu_screen"))
self.add_widget(GoScreen(name="go_screen"))
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