I have this python file
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivy.lang import Builder
from kivymd.theming import ThemableBehavior, ThemeManager
from kivymd.uix.list import OneLineIconListItem, MDList
class ContentNavigationDrawer(BoxLayout):
pass
class ItemDrawer(OneLineIconListItem):
icon = StringProperty()
class MainApp(MDApp):
def on_start(self):
icons_item = {
'bug': 'Files'
}
for icon_name in icons_item.keys():
self.root.ids.content_drawer.ids.md_list.add_widget(
ItemDrawer(icon=icon_name, text=icons_item[icon_name])
)
class DrawerList(ThemableBehavior, MDList):
def set_color_item(self, instance_item):
# Set the color of the icon and text for the menu item.
for item in self.children:
if item.text_color == self.theme_cls.primary_color:
item.text_color = self.theme_cls.text_color
break
instance_item.text_color = self.theme_cls.primary_color
MainApp().run()
And this .kv file
See Line 3, the error, comes there that screen_manager is not defined
<ItemDrawer>:
theme_text_color: "Custom"
on_release: screen_manager.current = 'screen2'
IconLeftWidget:
id: icon
icon: root.icon
theme_text_color: "Custom"
text_color: 0,0,0,1
<ContentNavigationDrawer>:
orientation: "vertical"
padding: "8dp"
spacing: "8dp"
AnchorLayout:
anchor_x: "left"
size_hint_y: None
height: avatar.height
Image:
id: avatar
size_hint: None, None
size: "250", "250"
source: "logo.jpg"
ScrollView:
DrawerList:
id: md_list
NavigationLayout:
ScreenManager:
id: screen_manager
Screen:
name: 'screen1'
BoxLayout:
orientation: 'vertical'
Widget:
canvas:
Color:
rgba: 0,1,0.2117647058823529,0.3
Rectangle:
size: self.size
pos: self.pos
MDNavigationDrawer:
id: nav_drawer
ContentNavigationDrawer:
id: content_drawer
Screen:
name: 'screen2'
When I click on the item in the navigation drawer, it says that screen_manager is not defined
What am I doing wrong? I searched the internet a lot but couldnot find anything useful
Help me please, how do i change screens?
The MDNavigation Drawer should be at the same indent level as the ScreenManager. Furthermore,
MDNavigationLayout:
screen_manager:screen_manager
ScreenManager:
id: screen_manager
Screen:
name: 'screen1'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: "Navigation Drawer"
elevation: 10
left_action_items: [['menu', lambda x:nav_drawer.set_state("open")]]
Widget:
Screen:
name: 'screen2'
MDNavigationDrawer:
id: nav_drawer
ContentNavigationDrawer:
id: content_drawer
add the
screen_manager:screen_manager
beneath the NavigationLayout so that it can be accessed as an ObjectProperty. Finally change the ItemDrawer callback from
on_release: screen_manager.current = 'screen2'
to
on_release: app.root.screen_manager.current = 'screen2'
Finally you can also add
nav_drawer: nav_drawer
beneath your root window and just ontop/below the line screen_manager: screen_manager
This enables for dismissing of the navigation drawer when the new screen pops up.
then update your callback to this:
on_release:
app.root.screen_manager.current = 'screen2'
app.root.nav_drawer.set_state('close')
Related
I'm trying to make a book reader in python, and I want to put the covers in a gridlayout with 2 columns and make ir scrollable, but I'm having an issue. I've already seen some questions about ScrollView, but nothing worked for me until now.
Here is a piece of my code:
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.uix.screenmanager import Screen, ScreenManager
from kivymd.uix.floatlayout import MDFloatLayout
from kivymd.uix.tab import MDTabsBase
class Library(Screen):
pass
class Book(Screen):
pass
class SM(ScreenManager):
pass
KV = '''
SM:
Library:
Book:
<Library>:
name: "lib"
MDBoxLayout:
orientation: "vertical"
MDToolbar:
id: t_b
title: "Library"
right_action_items: [["magnify", lambda x: x]]
MDTabs:
id: tabs
MDFloatLayout:
ScrollView:
pos_hint_y: None
pos_y: 0
size_hint_y: None
height: root.height
GridLayout:
cols: 2
spacing: "10dp"
size_hint_y: None
height: self.minimum_height
MDCard:
on_touch_down:
app.root.current = "book"
size_hint_y: None
height: "300dp"
Image:
source: "cover.png"
MDCard:
on_touch_down:
app.root.current = "book"
size_hint_y: None
height: "300dp"
Image:
source: "cover.png"
MDCard:
on_touch_down:
app.root.current = "book"
size_hint_y: None
height: "300dp"
Image:
source: "cover.png"
MDCard:
on_touch_down:
app.root.current = "book"
size_hint_y: None
height: "300dp"
Image:
source: "cover.png"
MDBottomNavigation:
MDBottomNavigationItem:
text: "Library"
icon: "book-variant-multiple"
MDBottomNavigationItem:
text: "History"
icon: "history"
MDBottomNavigationItem:
text: "Settings"
icon: "dots-horizontal"
<Book>:
name: "book"
'''
class Tab(MDFloatLayout, MDTabsBase):
pass
class Aplication(MDApp):
def build(self):
screen = Builder.load_string(KV)
return screen
def on_start(self):
tags = ['Action', 'Romance', 'Horror', 'Adventure']
for tag in tags:
self.root.get_screen("lib").ids.tabs.add_widget(Tab(title=tag))
if __name__ == "__main__":
Aplication().run()
It makes a ScrollView with the cards, but it's overlaying the toolbar and the tabs. What should I do?
I'm new working with kivymd and I need to generate an app with two screens, the second screen shows a TwoLineListItem inside a recycleview, I need to bind a function that takes the text on the selected row a put it in a text field of the main window, but I'm getting this error:
TypeError: click_supplier() missing 1 required positional argument: 'supplier_list_item'
Here's a similar example of my code:
PY
from kivy.lang import Builder
from kivymd.app import MDApp
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import Screen, ScreenManager
from kivymd.uix.list import OneLineListItem, TwoLineListItem
from kivy.uix.recycleview import RecycleView
from kivy.metrics import dp
suppliers=['Amazon', 'Ebay', 'Alibaba', 'Linio', 'Aliexpress']
suppliers_id=['198', '283', '343', '454', '203']
class MainWindow(Screen):
pass
class SelectSupplierWindow(Screen):
pass
class BrisaWindowManager(ScreenManager):
pass
class MainApp(MDApp):
#define build parameters
product_dialog=None
selected_products_list=[]
def build(self):
self.theme_cls.theme_style="Light"
self.theme_cls.primary_palette="Green"
return Builder.load_file('example.kv')
def go_to_screen(self, screen):
self.root.current=screen
#start suppliers list
def on_start(self):
self.set_list_of_suppliers()
#Autofill supplier search field--------------------------------------------------
def set_list_of_suppliers(self, text="", search=False):
def add_supplier_item(name_supplier):
self.root.get_screen('select_supplier').ids.suppliers_rv.data.append(
{
"viewclass": "TwoLineListItem",
"text": name_supplier,
"secondary_text": f'Code: {suppliers_id[suppliers.index(name_supplier)]}',
"on_release": self.click_supplier,
}
)
self.root.get_screen('select_supplier').ids.suppliers_rv.data = []
for name_supplier in suppliers:
if search:
if text.lower() in name_supplier.lower():
add_supplier_item(name_supplier)
else:
add_supplier_item(name_supplier)
def click_supplier(self, supplier_list_item):
self.root.get_screen('main').ids.oc_supplier.text=supplier_list_item.text
self.go_to_screen('main')
MainApp().run()
KV
BrisaWindowManager:
MainWindow:
id:main_window
SelectSupplierWindow:
<MainWindow>
name: 'main'
MDBoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'Brisa'
MDBottomNavigation:
MDBottomNavigationItem:
id: oc_screen
name: 'screen 1'
text: 'Purchase'
icon: 'clipboard-list'
MDBoxLayout:
orientation: 'vertical'
padding:dp(20)
spacing: dp(15)
MDTextField:
id: oc_supplier
hint_text: 'Select'
helper_text: 'Select'
helper_text_mode: 'on_focus'
mode: 'fill'
halign:'center'
on_focus:
app.root.current='select_supplier'
root.manager.transition.direction='up'
MDBottomNavigationItem:
name: 'screen 2'
text: 'Check'
icon: 'truck-check'
<SelectSupplierWindow>
name:'select_supplier'
MDBoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'Select'
left_action_items: [['arrow-left', lambda x: app.go_to_screen(screen='main'), 'back']]
MDBoxLayout:
orientation:'vertical'
spacing: dp(10)
padding: dp(20)
MDBoxLayout:
adaptive_height:True
MDIconButton:
icon: 'magnify'
MDTextField:
id: search_field
on_text: app.set_list_of_suppliers(self.text, True)
RecycleView:
id: suppliers_rv
key_viewclass: 'viewclass'
key_size: 'height'
RecycleBoxLayout:
padding: dp(10)
default_size: None, dp(60)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
The error triggered because the click item function needs the clicked row but I haven't been able to bind this event to the function.
How about changing your add_supplier_item() method to:
def add_supplier_item(name_supplier):
self.root.get_screen('select_supplier').ids.suppliers_rv.data.append(
{
"viewclass": "TwoLineListItem",
"text": name_supplier,
"secondary_text": f'Code: {suppliers_id[suppliers.index(name_supplier)]}',
"on_release": partial(self.click_supplier, name_supplier),
}
)
And your click_supplier() method to:
def click_supplier(self, supplier_list_item):
self.root.get_screen('main').ids.oc_supplier.text=supplier_list_item
self.go_to_screen('main')
Rather than trying to pass the item, just pass the text.
from kivymd.app import MDApp
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
from kivy.properties import ObjectProperty
class ContentNavigationDrawer(BoxLayout):
"""This class manage the navigation drawer contents"""
screen_manager = ObjectProperty()
nav_drawer = ObjectProperty()
class MyApp(MDApp):
def build(self):
"""Return the main kivy file and set themes """
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = 'BlueGray'
self.theme_cls.accent_palette = "Teal"
return Builder.load_file("main.kv")
MyApp().run()
and the kv file
<ContentNavigationDrawer>:
MDBoxLayout:
orientation: "vertical"
spacing: dp("8")
padding: dp("8")
ScrollView:
MDList:
OneLineIconListItem:
text: "hexagon"
on_press:
root.nav_drawer.set_state("close")
root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'hexagon'
MDScreen:
MDToolbar:
id: toolbar
title: "Hexagon"
md_bg_color: app.theme_cls.primary_color
specific_text_color: 1, 1, 1, 1
pos_hint: {"top": 1}
elevation: 9
icon: 'account-circle'
left_action_items: [["menu", lambda x: nav_drawer.set_state("open")]]
MDNavigationLayout:
x: toolbar.height
ScreenManager:
id: screen_manager
MDScreen:
name: "mainScreen"
BoxLayout:
orientation: 'vertical'
size: root.width, root.height
ScrollView:
do_scroll_x: True
do_scroll_y: True
size_hint: (1, .85)
bar_width: 10
bar_color: (1, 0, 0 ,1)
scroll_type: ["bars", "content"]
pos_hint: {'top': 1.0 - toolbar.height/float(root.height)}
GridLayout:
id: labels_layout
size_hint_y: None
height:self.minimum_height
size_hint_x: None
width: self.minimum_width
cols: 1
spacing: "5dp"
padding: "5dp"
MDLabel:
id: big_text_label
text: "asldklsa\nasdsaf\nssss\n"
width: self.texture_size[1]
height: self.texture_size[1]
MDNavigationDrawer:
id: nav_drawer
ContentNavigationDrawer:
screen_manager: screen_manager
nav_drawer: nav_drawer
test_screen_shot
I want to change the color of the toolbar I tried almost everything to do it
like md_bg_color: app.theme_cls.primary_color and md_bg_color: .2, .2, .2, 1
And the text goes beyond the boundaries even of the app if i add some widgets to get back
text to its area the it goes under the toolbar
Using:
Python 3.9, dev kivyMD 2.0, editor pycharm
Use:
from kivymd.app import MDApp
from kivy.lang import Builder
KV = """
<ContentNavigationDrawer>:
MDBoxLayout:
orientation: "vertical"
spacing: dp("8")
padding: dp("8")
ScrollView:
MDList:
OneLineIconListItem:
divider: None
text: "hexagon"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'account'
## BoxLayout:
## canvas.before:
## Color:
## rgba: [1,.3,0,1]
## Line:
## width: dp(1)
## rounded_rectangle:
## (self.x, self.y, self.width-dp(20), dp(43),\
## dp(12),dp(12),dp(12),dp(12),\
## dp(50))
OneLineIconListItem:
divider: None
text: "hexagon"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'hexagon'
OneLineIconListItem:
divider: None
text: "Edit"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'pencil'
OneLineIconListItem:
divider: None
text: "Home"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'home'
OneLineIconListItem:
divider: None
text: "Likes"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'star'
OneLineIconListItem:
divider: None
text: "hexagon"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'hexagon'
OneLineIconListItem:
divider: None
text: "Search"
on_press:
app.root.ids.nav_drawer.set_state("toggle")
#root.screen_manager.current = "mainScreen"
IconLeftWidget:
icon: 'magnify'
Screen:
MDToolbar:
id: toolbar
pos_hint: {"top": 1}
title: "Hexagon"
md_bg_color: [1,0,0,1]
specific_text_color: [1, 1, 1, 1]
elevation: 0
left_action_items: [["menu", lambda x: nav_drawer.set_state("toggle")]]
right_action_items: [["account-circle", lambda x: print(222)]]
ScreenManager:
id: screen_manager
MDScreen:
name: "mainScreen"
FloatLayout:
BoxLayout:
id: m5
pos_hint: {"center_x": .5, "center_y": .38} #this will change if you change this Window.size = (330, 500)
orientation: "vertical"
ScrollView:
do_scroll_x: False #True
do_scroll_y: True
#size_hint: (1, .85)
bar_width: 10
bar_color: (1, 0, 0 ,1)
scroll_type: ["bars", "content"]
pos_hint: {'top': 1.0 - toolbar.height/float(root.height)}
GridLayout:
id: labels_layout
size_hint_y: None
height:self.minimum_height
size_hint_x: 1
#width: self.minimum_width
cols: 1
spacing: "5dp"
padding: dp(20)
MDLabel:
id: big_text_label
text: "\\n\\n\\n\\n\\n\\nWelcome to this New App.\\nYou will get a lot of benefits.\\n\\njbsidis recommendations are good so we can design in different ways."
MDNavigationDrawer:
id: nav_drawer
ContentNavigationDrawer:
screen_manager: screen_manager
"""
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import ObjectProperty
class ContentNavigationDrawer(BoxLayout):
"""This class manage the navigation drawer contents"""
screen_manager = ObjectProperty()
#nav_drawer = ObjectProperty()
class WeatherApp(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
pass
def build(self):
self.screen = Builder.load_string(KV)
return self.screen
WeatherApp().run()
Pictures:
This code actually worked until I added multiple screens. It still works when I remove the multi Screen Manager. I get the attrubite error point to Chapter ids
Im trying to add a chapters screen. What Im I doing wrong please.
I think the error is from self.root.ids. I may be wrong. Below is thwe code
Python
from kivymd.app import MDApp
from kivymd.uix.list import OneLineListItem
from kivy.uix.screenmanager import ScreenManager, Screen
from kivymd.uix.button import MDRectangleFlatIconButton, MDFloatingActionButton
from kivy.lang import Builder
import pygame
pygame.mixer.init()
path = "C://abapp3"
class BooksScreen(Screen):
pass
class ChapterScreen(Screen):
pass
class MainApp(MDApp):
def build(self):
sm = ScreenManager()
sm.add_widget(BooksScreen(name='BooksScreen1'))
sm.add_widget(ChapterScreen(name='ChapterScreen1'))
return sm
def on_start(self):
songs = self.load_songs(path)
pygame.mixer.music.load(songs[0])
def load_songs(self, path_):
songs = []
for filename in os.listdir(path_):
if filename.endswith('.wav'):
songs.append(os.path.join(path_, filename))
self.root.ids.Chapter.add_widget(OneLineListItem(text=filename[2:],
on_release=self.play_song,
pos_hint={"center_x": 1, "center_y": 1}, ))
return songs
#staticmethod
def play_song(*args):
pygame.mixer.music.play()
print(OneLineListItem.text)
#staticmethod
def stop_song(*args):
pygame.mixer.music.stop()
print("song stopped")
MainApp().run()
.KV
ScreenManager:
Screen
BooksScreen:
ChapterScreen:
<BooksScreen>:
NavigationLayout:
ScreenManager:
Screen:
# Front / Main Screen
MDBoxLayout:
orientation: "vertical"
#Toolbar
MDToolbar:
title: "Chapters"
font_style: "Caption"
elevation: 8
left_action_items: [['menu', lambda x: nav_drawer.set_state("open")]]
Widget:
#stop/pause Button
MDBoxLayout:
orientation:"vertical"
# id: StopButton
text:"Pause"
BoxLayout:
Button:
text: 'Goto settings'
on_press:
root.manager.transition.direction = 'left'
root.manager.current = 'ChapterScreen1'
# Chapters list/ Play list
MDScreen
MDBoxLayout:
orientation: "vertical"
MDList
id: Chapter
#Options menu
MDNavigationDrawer:
id: nav_drawer
MDBoxLayout:
orientation: "vertical"
padding: "8dp"
spacing: "8dp"
ScrollView:
# Options Menu Options
MDList:
MDRectangleFlatIconButton:
on_press:
root.ids.nav_drawer.set_state("close")
pos_hint: {"center_x": .5, "center_y": .5}
icon: 'arrow-left'
line_color: 0, 0, 0, 0
OneLineIconListItem:
text: "Options"
font_style: "Caption"
#size_hint_y: None
#height: self.texture_size[1]
# Options Menu- About
OneLineIconListItem:
text: "About"
font_style: "Caption"
# size_hint_y: None
#height: self.texture_size[1]
# Options Menu Storage
OneLineIconListItem
text: 'Storage'
font_style: "Caption"
#IconLeftWidget
#icon: 'tools'
# Options Menu Toolbox
OneLineIconListItem:
text: 'Choose Voice'
font_style: "Caption"
#IconLeftWidget:
# icon: 'toolbox'
# Options Menu About
OneLineIconListItem:
text: 'About'
font_style: "Caption"
# IconLeftWidget:
# icon: 'toolbox-outline'
<ChapterScreen>:
BoxLayout:
Button:
text: 'Back to menu'
on_press:
root.manager.transition.direction = 'right'
root.manager.current = 'BooksScreen1'
The line:
self.root.ids.Chapter.add_widget(OneLineListItem(text=filename[2:],
on_release=self.play_song,
pos_hint={"center_x": 1, "center_y": 1}, ))
is trying to reference the Chapter id as if it were a member of the ScreenManager (root) ids, but it is not. It is a member of the ids of the BookScreen. You can fix that error by referencing the BookScreen instance in the problem line using the get_screen() method of ScreenManager:
self.root.get_screen('BooksScreen1').ids.Chapter.add_widget(OneLineListItem(text=filename[2:],
on_release=self.play_song,
pos_hint={"center_x": 1, "center_y": 1}, ))
I am using KivyMD and would like to refrash data in the the secound screen using the "on_pre_enter" method.
I am trying to access a label id from screen class "on_pre_enter" method with out success.
I am able to access the label id from the "MainApp" class but unable to access it from the "Second_Screen" class.
MainApp.py
from kivy.lang import Builder
from kivymd.app import MDApp
from kivy.uix.screenmanager import ScreenManager, Screen
class MainApp(MDApp):
def __init__(self, **kwargs):
self.title = "My Material Application"
self.theme_cls.primary_palette = "Blue"
super().__init__(**kwargs)
def on_start(self):
self.root.ids.main_screen_label.text = "Main Screen Updated"
def build(self):
self.root = Builder.load_file("app.kv")
class Second_Screen(Screen):
def on_pre_enter(self):
MainApp.ids.second_screen_label = "Second Screen Updated"
pass
if __name__ == "__main__":
MainApp().run()
App.kv
NavigationLayout:
MDNavigationDrawer:
NavigationDrawerSubheader:
text: "Menu:"
NavigationDrawerIconButton:
icon:'battery'
text: "Main Screen"
on_release:
screen_manager.current = "main_screen"
NavigationDrawerIconButton:
icon:'battery'
text: "Second Screen"
on_release:
screen_manager.current = "second_screen"
BoxLayout:
id: box1
orientation: 'vertical'
MDToolbar:
title: "My App"
md_bg_color: app.theme_cls.primary_color
left_action_items:
[['menu', lambda x: app.root.toggle_nav_drawer()]]
ScreenManager:
id: screen_manager
Screen:
name: "main_screen"
BoxLayout:
size_hint: .8, .8
pos_hint: {"center_x": .5, "center_y": .5}
spacing: dp(100)
orientation: 'vertical'
MDLabel:
id: main_screen_label
text: "Main Screen Default"
Second_Screen:
name: "second_screen"
FloatLayout:
id: float
size_hint: .8, .8
pos_hint: {"center_x": .5, "center_y": .5}
spacing: dp(100)
orientation: 'vertical'
MDLabel:
id: second_screen_label
text: "Second Screen Default"
I also tried using:
class Second_Screen(Screen):
def on_pre_enter(self):
self.ids.second_screen_label.text = "Second Screen Updated"
pass
After starting the i get the following error:
self.ids.second_screen_label.text = "Second Screen Updated"
File "kivy\properties.pyx", line 863, in
kivy.properties.ObservableDict.__getattr__
AttributeError: 'super' object has no attribute '__getattr__'
What is the correct way to access the id's defined in the KV file from the screen class?
Define screen layout in separate rule <MyScreen>:
<MyScreen>:
name: "my_screen"
FloatLayout:
# ...
To add this screen to ScreenManager, just write:
ScreenManager:
id: screen_manager
MyScreen:
To get access to screen widgets use
from screen class: self.ids.my_id
from app class: self.root.ids.screen_manager.get_screen("screen_name").ids.my_id
from other widgets: App.get_running_app()..root.ids.screen_manager.get_screen("screen_name").ids.my_id
So your full code will be:
main.py
from kivy.lang import Builder
from kivymd.app import MDApp
from kivy.uix.screenmanager import Screen
class MainApp(MDApp):
def __init__(self, **kwargs):
self.title = "My Material Application"
self.theme_cls.primary_palette = "Blue"
super().__init__(**kwargs)
def build(self):
self.root = Builder.load_file("app.kv")
def on_start(self):
self.root.ids.screen_manager.get_screen(
"main_screen"
).ids.main_screen_label.text = "Main Screen Updated"
class MainScreen(Screen):
pass
class SecondScreen(Screen):
def on_pre_enter(self):
self.ids.second_screen_label.text = "Second Screen Updated"
if __name__ == "__main__":
MainApp().run()
app.kv
NavigationLayout:
MDNavigationDrawer:
NavigationDrawerSubheader:
text: "Menu:"
NavigationDrawerIconButton:
icon: "battery"
text: "Main Screen"
on_release:
screen_manager.current = "main_screen"
NavigationDrawerIconButton:
icon: "battery"
text: "Second Screen"
on_release:
screen_manager.current = "second_screen"
BoxLayout:
id: box1
orientation: "vertical"
MDToolbar:
title: "My App"
md_bg_color: app.theme_cls.primary_color
left_action_items:
[["menu", lambda x: app.root.toggle_nav_drawer()]]
ScreenManager:
id: screen_manager
MainScreen:
SecondScreen:
<MainScreen>:
name: "main_screen"
BoxLayout:
size_hint: .8, .8
pos_hint: {"center_x": .5, "center_y": .5}
spacing: dp(100)
orientation: "vertical"
MDLabel:
id: main_screen_label
text: "Main Screen Default"
<SecondScreen>:
name: "second_screen"
FloatLayout:
id: float
size_hint: .8, .8
pos_hint: {"center_x": .5, "center_y": .5}
spacing: dp(100)
orientation: "vertical"
MDLabel:
id: second_screen_label
text: "Second Screen Default"