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Add widget dynamically from outside class (error)

I´m learning kivy, and it has passed 3 weeks since i face this problem without encounter a solution, so i hope any of u guys could help me, i would appreciate it.
I have a main file:
from app import MyProgramApp
if __name__ == "__main__":
winapp = MyProgramApp()
winapp.run()
from where i start my app. Then i have a directory called "app", inside there is the following "init.py" file.
from kivy.app import App
from kivy.utils import QueryDict, rgba
from kivy.core.window import Window
from .view import MainWindow
Window.minimum_width = 500
Window.minimum_height = 650
Window.maximize()
class MyProgramApp(App):
colors = QueryDict()
colors.primary = rgba('#2D9CDB')
colors.secondary = rgba('#16213E')
colors.succes = rgba('#1FC98E')
colors.warning = rgba('#F2C94C')
colors.danger = rgba('#E85757')
colors.grey_dark = rgba('#C4C4C4')
colors.grey_light = rgba('#F5F5F5')
colors.black = rgba('#A1A1A1')
colors.white = rgba('#FFFFFF')
def build(self):
return MainWindow()
Same folder app, i have the following "view.py".
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.behaviors import ToggleButtonBehavior
from kivy.properties import StringProperty
from kivy.uix.screenmanager import ScreenManager
class MainWindow(BoxLayout):
username = StringProperty("Usuario")
def __init__(self, **kw):
super().__init__(**kw)
def on_press_home(self):
self.ids.scrn_mngr.current = "scrn_home"
class ViewManager(ScreenManager):
def __init__(self, **kw):
super().__init__(**kw)
class NavTab(ToggleButtonBehavior, BoxLayout):
text = StringProperty('')
icon = StringProperty('')
def __init__(self, **kw):
super().__init__(**kw)
and finally for that folder i have "myprogram.kv"
#:kivy 2.1.0
#:import Home views.home.Home
<MainWindow>:
spacing: dp(8)
canvas.before:
Color:
rgba: app.colors.white
Rectangle:
pos: self.pos
size: self.size
# NAVIGATION BAR
BoxLayout:
id: nav_menu
size_hint_x: .2
orientation: "vertical"
size_hint_min_x: dp(100)
# LOGO
BoxLayout:
id: logo_nbox
size_hint_y: .1
size_hint_min_y: dp(70)
padding: dp(16)
AnchorLayout:
anchor_x: "right"
size_hint_x: None
width: dp(52)
halign: "left"
Label:
text: "COMPANY"
halign: "center"
BoxLayout:
orientation: "vertical"
Label:
text: "COMPANY"
halign: "center"
Label:
text: "Phrase"
halign: "center"
# OPTIONS
GridLayout:
id: tabs_box
cols: 1
spacing: dp(4)
size_hint_y: .5
canvas.before:
Color:
rgba: app.colors.grey_dark
Rectangle:
pos: self.pos
size: [self.size[0], dp(1)]
NavTab:
text: "Home"
state: "down"
on_press: root.on_press_home()
# BODY
BoxLayout:
size_hint_x: .8
spacing: dp(8)
orientation: "vertical"
padding: [dp(16), dp(8), dp(12), dp(8)]
canvas.before:
Color:
rgba: app.colors.grey_light
Rectangle:
pos: self.pos
size: self.size
# SCREENS
BoxLayout:
ViewManager:
id: scrn_mngr
<ViewManager>:
Screen:
name: "scrn_home"
Home:
id: home
<NavTab>:
background_normal: ""
background_down: ""
background_color: [0,0,0,0]
group: "tabs"
size_hint_y: None
height: dp(45)
spacing: dp(4)
canvas.before:
Color:
rgba: [0,0,0,0] if self.state == "normal" else rgba("#E1F1FF")
Rectangle:
pos: self.pos
size: self.size
Color:
rgba: [0,0,0,0] if self.state == "normal" else app.colors.primary
Rectangle:
pos: [self.pos[0]+self.size[0]-dp(1), self.pos[1]]
size: [dp(8), self.size[1]]
Label:
halign: "left"
valign: "middle"
text: root.text
color: app.colors.grey_dark if root.state == "normal" else app.colors.primary
Then i got another folder called "views" inside i have another folder called "home", inside home we encounter 3 files "init.py", "home.kv", "home.py". the first one "init.py" is the following.
from .home import Home
then we got "home.kv".
#:kivy 2.1.0
<Home>:
orientation: "vertical"
Label:
size_hint_y: .1
text: "Other"
Button:
size_hint_y: .1
text: "popup"
on_press: root.open_popup()
BoxLayout:
size_hint_y: .8
id: home_box
<SomePopup>:
title: "SOME TITLE"
title_align: "center"
title_color: app.colors.primary
size_hint: .25, .8
size_hint_min_x: dp(200)
pos_hint: {"x": .1, "top": .9}
BoxLayout:
orientation: "vertical"
padding: [dp(0), dp(12), dp(0), dp(12)]
Label:
text: "Some text"
Button:
text: "create buttons on box"
on_press: root.modify_home_box()
and finally and the problem that i´m facing is whit the following file "home.py"
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.factory import Factory
from kivy.uix.popup import Popup
from kivy.uix.button import Button
from kivy.app import App
Builder.load_file('views/home/home.kv')
class Home(BoxLayout):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def open_popup(self):
Factory.SomePopup().open()
class SomePopup(Popup):
def __init__(self, **kw):
super().__init__(**kw)
def modify_home_box(self):
my_app = App.get_running_app().root
my_box = my_app.ids.home.ids.home_box
custom_button = Button(
text = "something"
)
my_box.add_widget(custom_button)
That i´m trying to do is actually modify "home_box" with is store on ids Home dictionary, i also try with ObjectProperty (but that gives and Attribute Error, since i only could read propertys but doesnt modify it), instance of a new Home class doesnt work... searching for current app in App appear doesnt work since Home is store i think on screenManager...
I need add a button or some widget to "home_box" from outside class "SomePopup". I also drop here a repository on github with the whole code. github_repo
I don't know how to solve my issue, and i try with the resources available here on stack as well other net places... any help would be appreciate.

Just a very complicated path to the widget of interest. In your modify_home_box() method, try replacing:
my_app = App.get_running_app().root
my_box = my_app.ids.home.ids.home_box
with:
my_app = App.get_running_app().root
my_box = my_app.ids.scrn_mngr.ids.home.ids.home_box

Kivy Python: buttons and classes for multiple screens

I have a problem with my Kivy Python Code. I have 2 screens: 1st is to navigate to the second screen and on the 2nd screen there is a button to add text to a scrollview...navigating is working but it does not add any text to the scrollview...I think I need some help here! AttributeError: 'super' object has no attribute 'getattr'
import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.clock import Clock, mainthread
from kivy.core.window import Window
from kivy.uix.scrollview import ScrollView
from kivy.effects.scroll import ScrollEffect
from kivy.lang import Builder
Builder.load_string("""
<MenuScreen>:
name: 'mainmenu'
BoxLayout:
spacing: 1
orientation: "vertical"
Label:
text: "MAIN MENU"
Button:
text: 'Go to Screen 2'
on_release:
root.manager.current = 'screen2'
root.manager.transition.direction = "left"
Button:
text: 'Quit'
on_release: root.manager.current = app.exit_software()
<Screen2>:
name: 'screen2'
BoxLayout:
spacing: 1
orientation: "vertical"
ScrollView:
id: scroll_view
always_overscroll: False
BoxLayout:
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
Label:
id: label
text: "You can add some Text here by pressing the button"
size_hint: None, None
size: self.texture_size
Button:
text: 'Add text!'
size_hint_y: 0.1
on_release: app.add_text()
Button:
text: 'Back to main menu'
size_hint_y: 0.1
on_release:
root.manager.current = 'mainmenu'
root.manager.transition.direction = "right"
""")
# Declare both screens
class MenuScreen(Screen):
pass
class Screen2(Screen):
pass
class AddTextApp(App):
def __init__(self,**kwargs):
super().__init__(**kwargs)
def build(self):
# Create the screen manager
sm = ScreenManager()
sm.add_widget(MenuScreen(name='mainmenu'))
sm.add_widget(Screen2(name='screen2'))
return sm
def add_text(self):
self.root.ids.label.text += f"Some new Text\n"
self.root.ids.scroll_view.scroll_y = 0
def exit_software(self):
App.get_running_app().stop()
if __name__ == '__main__':
AddTextApp().run()
Thank you very much in advance!

The error occurred because self.root.ids gets access to widgets located in the root widget of the main class. To access the secondary screen elements, you need to add it to the main class (in your case, in ScreenManager) and set its id. Also, you have a lot of imported excess, so that it is clearly visible, I advise you to use Pycharm or something like that.
from kivy.app import App
from kivy.uix.screenmanager import Screen
from kivy.lang import Builder
kv = """
<MenuScreen>:
name: 'mainmenu'
BoxLayout:
spacing: 1
orientation: "vertical"
Label:
text: "MAIN MENU"
Button:
text: 'Go to Screen 2'
on_release:
root.manager.current = 'screen2'
root.manager.transition.direction = "left"
Button:
text: 'Quit'
on_release: root.manager.current = app.exit_software()
<Screen2>:
name: 'screen2'
BoxLayout:
spacing: 1
orientation: "vertical"
ScrollView:
id: scroll_view
always_overscroll: False
BoxLayout:
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
Label:
id: label
text: "You can add some Text here by pressing the button"
size_hint: None, None
size: self.texture_size
Button:
text: 'Add text!'
size_hint_y: 0.1
on_release: app.add_text()
Button:
text: 'Back to main menu'
size_hint_y: 0.1
on_release:
root.manager.current = 'mainmenu'
root.manager.transition.direction = "right"
ScreenManager:
MenuScreen:
id: menu_scr
Screen2:
id: scr_2
"""
class MenuScreen(Screen):
pass
class Screen2(Screen):
pass
class AddTextApp(App):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def build(self):
return Builder.load_string(kv)
def add_text(self):
self.root.ids.scr_2.ids.label.text += f"Some new Text\n"
self.root.ids.scr_2.ids.scroll_view.scroll_y = 0
#staticmethod
def exit_software():
App.get_running_app().stop()
if __name__ == '__main__':
AddTextApp().run()

How to populate recycleview from input on another 'screen'

good day
what im trying to accomplish is to input text on one screen then have it create a button on another screen within a recycleview where if I keep adding buttons the recycleview keeps getting populated. I would assume that the button1 function would update the rvs.rv.data and that the recycleview would use the it update itself. could you point me in the right direction please?
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import Screen, ScreenManager
kv = """
<custombutton#BoxLayout>:
canvas.before:
Color:
rgba: 0.5, 0.5, 0.5, 1
Rectangle:
size: self.size
pos: self.pos
value: ''
Button:
text: root.value
<Root>:
RVScreen:
name: 'Rv'
InputScreen:
name: 'input_screen'
<InputScreen>:
name: "input_screen"
orientation: "vertical"
BoxLayout:
orientation: "vertical"
TextInput:
id: textinput
Button:
text: "hi"
on_press: print(app.rvs.rv.data)
on_press: app.rvs.button1('some_value')
Button:
text: 'rvscreen'
on_press: root.manager.current = 'Rv'
<RVScreen>:
name: 'Rv'
rv: rv
orientation: "vertical"
BoxLayout:
orientation: "vertical"
Button:
text: 'refresh'
on_press: root.rv.refresh_from_data()
on_press: print(app.rvs.rv.data)
Button:
text: "input page"
on_press: root.manager.current = 'input_screen'
RecycleView:
id: rv
viewclass: 'custombutton'
RecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
"""
Builder.load_string(kv)
class Root(ScreenManager):
pass
class RVScreen(Screen):
def __init__(self, **kwargs):
super(RVScreen, self).__init__(**kwargs)
def button1(self, value):
self.rv.data.insert(0, {'value': value or 'default value'})
class InputScreen(Screen):
pass
class TestApp(App):
rvs = RVScreen()
def build(self):
return Root()
if __name__ == '__main__':
TestApp().run()

The problem is that you are populating the data of the app.rvs, but that is created by the line:
rvs = RVScreen()
which creates a new RVScreen instance that is entirely unrelated to the RVScreen that is displayed in your GUI. In order to update the RVScreen in your GUI, you need to get a reference to that RVScreen.
I like to that that through a method in the App, just because it makes the code simpler. So here is a modified version of your code that does it my way:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import Screen, ScreenManager
kv = """
<custombutton#BoxLayout>:
canvas.before:
Color:
rgba: 0.5, 0.5, 0.5, 1
Rectangle:
size: self.size
pos: self.pos
value: ''
Button:
text: root.value
<Root>:
RVScreen:
name: 'Rv'
InputScreen:
name: 'input_screen'
<InputScreen>:
name: "input_screen"
orientation: "vertical"
BoxLayout:
orientation: "vertical"
TextInput:
id: textinput
Button:
text: "hi"
on_press: app.add_data(textinput.text)
Button:
text: 'rvscreen'
on_press: root.manager.current = 'Rv'
<RVScreen>:
name: 'Rv'
rv: rv
orientation: "vertical"
BoxLayout:
orientation: "vertical"
Button:
text: 'refresh'
on_press: rv.refresh_from_data()
Button:
text: "input page"
on_press: root.manager.current = 'input_screen'
RecycleView:
id: rv
viewclass: 'custombutton'
RecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
"""
Builder.load_string(kv)
class Root(ScreenManager):
pass
class RVScreen(Screen):
pass
class InputScreen(Screen):
pass
class TestApp(App):
# rvs = RVScreen() # this code does nothing useful
def build(self):
return Root()
def add_data(self, value):
# get the `Screen` instance
rvs = self.root.get_screen('Rv')
# insert the new value into the data
rvs.ids.rv.data.insert(0, {'value': value or 'default value'})
if __name__ == '__main__':
TestApp().run()
I also made a small modification, so that the new value comes from the TextInput.

How to switch screens from a dynamically created button in kivy recycleview

Problem
I have a screen (OrderScreen) that populates with buttons if there is data to be processed. I would like the user to click one of the buttons to be brought to another screen (MenuScreen) to process the data. While my intention is to populate the next screen with data from the button, I am currently just trying to get the ScreenManager to change to the next screen after a button press. I added a pass_data() method to the OrderButton and tried to trigger the screen manager there but self.manager.current and root.manager.current were throwing exceptions. Any help would be greatly appreciated.
recycleview_test.py
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.label import Label
from kivy.uix.recycleview import RecycleView
from kivy.uix.screenmanager import ScreenManager, Screen
from random import randint
class MenuScreen(Screen):
def quit(self):
App.get_running_app.stop()
Window.close()
class OrderScreen(Screen):
pass
class OrderButton(Button):
def __init__(self, **kwargs):
super(OrderButton, self).__init__(**kwargs)
def pass_data(self):
print("button pushed")
class OrderScroll(RecycleView):
def __init__(self, **kwargs):
super(OrderScroll, self).__init__(**kwargs)
self.data = [{'text': str(f"Make {randint(10, 25)} items from package #{randint(1,4)}")} for x in range(12)]
class WindowManager(ScreenManager):
pass
class RecycleApp(App):
def build(self):
return WindowManager()
if __name__ == "__main__":
RecycleApp().run()
recycle.kv
#:import Factory kivy.factory.Factory
#: import ScreenManager kivy.uix.screenmanager.ScreenManager
#: import Screen kivy.uix.screenmanager.ScreenManager
#:import App kivy.app.App
<OrderScroll>:
viewclass: 'OrderButton'
manager: None
RecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
padding: 20
spacing: 10
<OrderButton>:
manager: None
font_size: 32
bold: True
on_release:
root.pass_data()
<WindowManager>:
id: screen_manager
OrderScreen:
id: order_screen
name: "OrderScreen"
manager: screen_manager
MenuScreen:
id: menu_screen
name: 'MenuScreen'
manager: screen_manager
<OrderScreen>:
BoxLayout:
orientation: "vertical"
Label:
text: "Data Buttons"
font_size: 64
size_hint_y: None
# pos_hint: {"x":0, "y":1}
height: 200
OrderScroll:
<MenuScreen>:
BoxLayout:
orientation: "vertical"
Label:
text: "Made it"
font_size: 64
FloatLayout:
Button:
text: 'Keep going'
font_size: 48
size_hint: .8,.5
pos_hint: {"center_x": .5, "center_y": .1}
FloatLayout:
Button:
text: 'Quit'
size_hint: .15,.3
pos_hint: {"center_x": .5, "center_y": .5}
on_release:
root.quit()

Try to create an object of screen manager:
class RecycleApp(App):
def build(self):
self.sm = WindowManager()
return self.sm
And then access it by:
App.get_running_app().sm.current = 'MenuScreen' # in Python
app.sm.current = 'MenuScreen' # in kv

switch screenmanager inside layout

I'm trying to make a ScreenManager inside a BoxLayout work, so I can have a fixed toolbox below everyScreen the Screen. I managed to show the first screen (thanks to this question), but, when I try to swicth to the other Screen, the app crashes saying that there's no other Screen.
Actually, there really is no other Screen: both prints inside the ScreenManagement's init shows nothing. And I don't know why.
Without the toolbar (only with the ScreeManager(ment) and the necessary tweaks in the code, of course) everything works fine.
I tried to add_widget to the ScreenManagement and the screen_names was populated, but I couldn't switch between the Screens.
What I am missing?
The last part of the error:
screen = self.get_screen(value)
File "C:\Python27\lib\site-packages\kivy\uix\screenmanager.py", line 944, in get_screen
raise ScreenManagerException('No Screen with name "%s".' % name)
ScreenManagerException: No Screen with name "init".
Windows 7, Python 2.7, Kivy 1.9.1
Here is the ClassApp.py:
import kivy
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen, NoTransition
from kivy.clock import Clock
#just solving my weak GPU issue
from kivy import Config
Config.set('graphics', 'multisamples', '0')
kivy.require('1.9.1')
class Init(Screen):
pass
class Menu(Screen):
pass
class ScreenManagement(ScreenManager):
def __init__(self,**kwargs):
print('before super: ', self.screen_names)
super(ScreenManagement,self).__init__(**kwargs)
print('after super: ', self.screen_names)
def switch_to_menu(self):
self.current = 'menu'
print('going to menu')
def switch_to_init(self):
self.current = 'init'
print('going to init')
class ClassAllScreen(BoxLayout):
sm = ScreenManagement()
sm.transition = NoTransition()
pass
class ClassApp(App):
def build(self):
self.root = ClassAllScreen()
return self.root
if __name__ == '__main__':
ClassApp().run()
And here the Class.kv:
<Init>: #first Screen
name: 'init'
BoxLayout:
orientation:'vertical'
padding:20
spacing:10
Button:
text:'uppest'
GridLayout:
spacing:10
cols:2
Button:
text:'upper left'
Button:
text:'upper right'
Button:
text:'bottom left'
Button:
text:'bottom right'
Button:
text:'bottomest: go to menu'
on_press:app.root.sm.switch_to_menu()
<Menu>: #second Screen
name: 'menu'
BoxLayout:
orientation:'vertical'
padding:20
spacing:10
GridLayout:
spacing:10
cols:2
Button:
text:'upper left'
Button:
text:'upper right'
Button:
text:'bottom left'
Button:
text:'bottom right'
Button:
text:'bottomy'
Button:
text:'bottomest: go to init'
on_press:app.root.sm.switch_to_init()
<ScreenManagement>: #including both the Screens in ScreenManager
Menu:
Init:
<ClassAllScreen>: #all the display with ScreenManager and "Toolbar"
orientation:'vertical'
ScreenManagement:
BoxLayout:
size_hint_y: None
height: 60
spacing: 5
padding: 5,5,0,5
canvas:
Color:
rgba: .1,.1,.1,1
Rectangle:
pos: self.pos
size: self.size
Button:
text:'1'
size_hint_x: None
width: 60
Button:
text:'2'
size_hint_x: None
width: 60
Button:
text:'3'
size_hint_x: None
width: 60

First you need to add the screens to your screenmanager.
To do that, you can do something like this in your ScreenManager class.
def __init__(self,**kwargs):
super(ScreenManagement,self).__init__(**kwargs)
self.add_widget(Init(name="init"))
self.add_widget(Menu(name="menu"))
Now the two screens will have one manager, which is ScreenManagement
So in your kv code you call the manager like this:
Button:
text:'bottomest: go to menu'
on_press:root.manager.switch_to_menu()
You can also do like this, if you dont want to make methods:
Button:
text:'bottomest: go to menu'
on_press:root.manager.current = 'menu'
Also there is a problem with your code, You add the screenmanager to a boxlayout, and try to return the boxlayout. You cannot do that. You can only show one screen at a a time. So I am guessing you want a third screen here. What you should do is retunr the screen manager in your build method, and only add screens to it.
I wrote an example. I dont know if its something like this you want.
import kivy
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.lang import Builder
Builder.load_string("""
<Init>:
name: 'init'
BoxLayout:
orientation:'vertical'
Button:
text:'go to menu'
on_press:root.manager.current = "menu"
<Menu>:
name: 'menu'
BoxLayout:
orientation:'vertical'
Button:
text:'go to init'
on_press:root.manager.current = "init"
<ClassAllScreen>:
BoxLayout:
orientation:'vertical'
Button:
text:'go to init'
on_press:root.manager.current = "init"
Button:
text:'go to menu'
on_press:root.manager.current = "menu"
""")
class Init(Screen):
pass
class Menu(Screen):
pass
class ClassAllScreen(Screen):
pass
class ClassApp(App):
def build(self):
sm = ScreenManager()
sm.add_widget(ClassAllScreen(name="main"))
sm.add_widget(Init(name="init"))
sm.add_widget(Menu(name="menu"))
return sm
if __name__ == '__main__':
ClassApp().run()

With the great help of #EL3PHANTEN and this, I fixed my code and I guess I know where was my mistake.
I can't use app.root.sm.current='whateverScreenName' inside kv file. I can't explain why, but I guess it has something with the moment of ScreenManagement's instatiation. As I thought from the begin, the python part is very straightforward.
Again: thanks for your help, #EL3PHANTEN :)
Here is the result:
ScreenManager inside a BoxLayout to have a Toolbar
Here is the working fixed python code:
import kivy
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen, NoTransition
from kivy.clock import Clock
#just solving my weak GPU issue
from kivy import Config
Config.set('graphics', 'multisamples', '0')
kivy.require('1.9.1')
class ScreenManagement(ScreenManager):
pass
class Init(Screen):
pass
class Menu(Screen):
pass
class ClassAllScreen(BoxLayout):
pass
class ClassApp(App):
def build(self):
self.root = ClassAllScreen()
return self.root
if __name__ == '__main__':
ClassApp().run()
And the Class.kv:
#: import NoTransition kivy.uix.screenmanager.NoTransition
<Init>:
name: 'init'
BoxLayout:
orientation:'vertical'
padding:20
spacing:10
Button:
text:'uppest'
GridLayout:
spacing:10
cols:2
Button:
text:'upper left'
Button:
text:'upper right'
Button:
text:'bottom left'
Button:
text:'bottom right'
Button:
text:'bottomest: go to menu'
on_press: root.manager.current = 'menu'
<Menu>:
name: 'menu'
BoxLayout:
orientation:'vertical'
padding:20
spacing:10
GridLayout:
spacing:10
cols:2
Button:
text:'upper left'
Button:
text:'upper right'
Button:
text:'bottom left'
Button:
text:'bottom right'
Button:
text:'bottomy'
Button:
text:'bottomest: go to init'
on_press: root.manager.current = 'init'
<ScreenManagement>:
transition: NoTransition()
Init:
Menu:
<ClassAllScreen>:
orientation:'vertical'
ScreenManagement:
BoxLayout:
size_hint_y: None
height: 60
spacing: 5
padding: 5,5,0,5
canvas:
Color:
rgba: .1,.1,.1,1
Rectangle:
pos: self.pos
size: self.size
Button:
text:'1'
size_hint_x: None
width: 60
Button:
text:'2'
size_hint_x: None
width: 60
Button:
text:'3'
size_hint_x: None
width: 60