CODEWITHSUNDEEP
pythonkivykivymd
ELLIOT RAPP
ELLIOT RAPP

Reputation: 11

python, kivymd, builder, loadfile

I have a seemingly pretty easy question. I am making a app with kivymd and the first .kv file is sort of long. I have three .kv files that I would like to navigate in between. Currently i'm wondering how to use Builder.load_file, or something else to read from window to window, thanks for your help.

Upvotes: 0

Views: 980

Answers (1)

James
James

Reputation: 1

Not sure if there is a better way to do this or not. I myself couldn't find anything but ended up doing the following.

  1. Create your main .kv file that is a screen manager. Make sure you include your other .kv files with '#:include 'filename.kv'

    #:include screen1.kv
#:include screen2.kv


ScreenManager:
    Screen1:
    Screen2:

  2. Format your other .kv files however you'd like. Just make sure to include a name for referencing in your screen manager. You must also name the screens the same as you did in your main.kv file.

     <Screen1>
     name: 'screen1'
     orientation: 'vertical'

     MDLabel:
         text: 'Screen1'
         halign: 'center'

     MDFlatButton:
         text: 'Go to screen 2'
         pos_hint: {'center_x': 0.5}
         on_release: root.manager.current = 'screen2'

This is .kv file #2

    <Screen2>
        name: 'screen2'
         orientation: 'vertical'

        MDLabel:
            text: 'Screen2'
            halign: 'center'

        MDFlatButton:
            text: 'Go to screen 1'
            pos_hint: {'center_x': 0.5}
            on_release: root.manager.current = 'screen1'

Your main.py file will have to include the libraries, define the classes, add the screens to your screen manager, and then you can build your main.kv file in your MDApp.

    from kivymd.app import MDApp
    from kivy.uix.screenmanager import Screen, ScreenManager
    from kivy.lang import Builder

    class Screen1(Screen):
        pass

    class Screen2(Screen):
        pass

    sm = ScreenManager()
    sm.add_widget(Screen1(name= 'screen1'))
    sm.add_widget(Screen2(name= 'screen2'))

    class MainApp(MDApp):
        def build(self):
            sm = Builder.load_file("Main.kv")
            return sm

    MainApp().run()

Upvotes: 0

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