How Do You Change The Screen Transition Direction In Kivy, Within The Python Code?

I know how to change the transition direction in Kivy code form. Example: Button: text: 'Home' size_hint: 0.8, 0.2 on_release: root.manager.transition.directi

Solution 1:

Here's the example how your app should look like "just for switching screens".

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.button import Button
from kivy.uix.screenmanager import ScreenManager, Screen, SlideTransition

class FirstPage(FloatLayout):

    def switch_screen(self):
        myapp.screen_manager.transition = SlideTransition(direction='left', duration=.25)
        myapp.screen_manager.current = 'SecondPage'

class SecondPage(FloatLayout):

    def switch_back(self):
        myapp.screen_manager.transition = SlideTransition(direction='right', duration=.25)
        myapp.screen_manager.current = 'FirstPage'

class MyApp(MDApp):

    def build(self):
        self.screen_manager = ScreenManager()

        self.firstpage = FirstPage()
        screen = Screen(name='FirstPage')
        screen.add_widget(self.firstpage)
        self.screen_manager.add_widget(screen)

        self.secondpage = SecondPage()
        screen = Screen(name='SecondPage')
        screen.add_widget(self.secondpage)
        self.screen_manager.add_widget(screen)

        return self.screen_manager

myapp = MyApp()
myapp.run()

kivy code:

FirstPage:

<FirstPage>:

    Button:
        text: "First"
        on_release: root.switch_screen()

<SecondPage>:

    Button:
        text: "Second"
        on_release: root.switch_back()