CODEWITHSUNDEEP
androidpython-2.7kivykivy-language
KubiK888
KubiK888

Reputation: 4723

Working Kivy codes in Windows but blank screen on linux environment

I am trying to do some cross platform testing. Here is a working code for Windows:

main.py

#!/usr/bin/kivy
import kivy
kivy.require('1.0.6')

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder

class MatrixCalcLayout(BoxLayout):
    pass

class ConfusionMatrixCalc_v3App(App):
    def build(self):
        return MatrixCalcLayout()

if __name__=='__main__':
    ConfusionMatrixCalc_v3App().run()

ConfusionMatrixCalc_v3.kv

#:kivy 1.0
#:import kivy kivy

<MatrixCalcLayout>:
    orientation: 'vertical'
    BoxLayout:
        Button:
    BoxLayout:
        Button:
    BoxLayout:
        Button:

When I try to run it on Ubuntu, it does load up and show the kivy canvas, but it's just a blank (black) screen as if it doesn't link to the .kv file.

Edited: Corrected the .kv file name

Upvotes: 1

Views: 728

Answers (2)

ODiogoSilva
ODiogoSilva

Reputation: 2414

According to the kivy docs:

Kivy looks for a Kv file with the same name as your App class in lowercase, minus “App” if it ends with ‘App’ e.g:

You could change the .kv file to confusionmatrixcalc_v3.kv or provide it explicitly when calling run()

if __name__=='__main__':
    ConfusionMatrixCalc_v3App(kv_file="ConfusionMatrixCalc.kv").run()

Upvotes: 1

el3ien
el3ien

Reputation: 5405

You need to eiter load the kv file with Builder:

Builder.load_file("ConfusionMatrixCalc.kv")

Or change your App class name from ConfusionMatrixCalc_v3App to ConfusionMatrixCalcApp

Upvotes: 1

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