I have the following code where I would like to be able to click on the navigation drawer, select Status under Users, input the name and then be sent to a given screen with the current_user now populated.
main.py
from kivy.uix.behaviors import CoverBehavior
from kivy import utils
from kivy.properties import ObjectProperty, ListProperty, NumericProperty, StringProperty, BooleanProperty
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.screenmanager import ScreenManager
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivymd.theming import ThemableBehavior
from kivymd.uix.button import MDFlatButton
from kivymd.uix.dialog import MDDialog
from kivymd.uix.list import MDList
#from models import ServerInfo
from navigation_drawer import navigation_helper
Window.fullscreen = 'auto'
class ItemWidget(BoxLayout):
sid = NumericProperty()
name = StringProperty()
work = NumericProperty()
is_disabled = BooleanProperty()
description = StringProperty()
has_issue = BooleanProperty()
class MainWidget(FloatLayout):
recycleView = ObjectProperty()
items = ListProperty()
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.items = [
#ServerInfo(1, "server1", 95, "desc", is_disabled=False, has_issue=False),
]
# Put the servers with issues on top, otherwise sort by name
self.items = sorted((s for s in self.items), key=lambda x: (not(x.has_issue),x.name))
# Load the server information when the recycleView is called
def on_recycleView(self, widget, parent):
self.recycleView.data = [
m.get_dictionary() for m in self.items
]
class Content(BoxLayout):
pass
class DemoApp(MDApp):
class ContentNavigationDrawer(BoxLayout):
pass
class DrawerList(ThemableBehavior, MDList):
pass
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.dialog = None
# set main interface
self.manager = ScreenManager()
self.current_user = ""
# return main interface
#return self.manager
def build(self):
screen = Builder.load_string(navigation_helper)
return screen
def on_start(self):
pass
def dialog_close(self, *args):
self.dialog.dismiss(force=True)
def set_current_user(self,user,sm):
self.current_user = user
# Send over to given screen
# ???? = sm
def show_user_input_dialog(self,user,screen):
#print(sm.current)
if not self.dialog:
self.dialog = MDDialog(
title="Input Username:",
type="custom",
content_cls=Content(),
buttons=[
MDFlatButton(
text="CANCEL",
theme_text_color="Custom",
text_color=self.theme_cls.primary_color,
on_release=self.dialog_close
),
MDFlatButton(
text="OK",
theme_text_color="Custom",
text_color=self.theme_cls.primary_color,
#on_release=self.set_current_user(user,screen)
on_release=self.dialog_close
),
],
)
# Send to user management page with current user now populated
# Fails as sm is a str instead of ScreenManager()
#sm.current = 'user_management'
self.dialog.open()
DemoApp().run()
navigation_drawer.py
navigation_helper = """
Screen:
MDNavigationLayout:
ScreenManager:
id: screenManager
Screen:
name: "monitor"
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'Administration'
left_action_items: [["menu", lambda x: nav_drawer.set_state('toggle')]]
elevation:5
MainWidget:
Screen:
name: "user_management"
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'Administration'
left_action_items: [["menu", lambda x: nav_drawer.set_state('toggle')]]
elevation:5
UserManagement:
MDNavigationDrawer:
id: nav_drawer
ContentNavigationDrawer:
orientation: 'vertical'
padding: "2dp"
spacing: "2dp"
ScrollView:
DrawerList:
id: md_list
MDList:
TwoLineIconListItem:
text: "Monitor"
secondary_text: "Monitor servers"
on_release: screenManager.current = 'monitor'
IconLeftWidget:
icon: "monitor"
MDLabel:
padding: dp(10), dp(0)
text: "Users"
bold: True
font_size: dp(22)
size_hint_y: None
OneLineIconListItem:
text: "Status"
on_release: app.show_user_input_dialog('abc999','user_management')
<Content>
orientation: "vertical"
spacing: "12dp"
size_hint_y: None
height: "60dp"
MDTextField:
id: username_input
hint_text: "Username"
<UserManagement#BoxLayout>:
Label:
text: "Users"
<MainWidget>:
id: mainWidgetId2
recycleView: recycleView
CoverImage:
source: 'images/monitor.png'
# Darken the photo
canvas:
Color:
rgba: 0, 0, 0, .6
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
padding: dp(20)
spacing: dp(10)
BoxLayout:
orientation: "horizontal"
BoxLayout:
canvas.before:
Color:
rgba: 1,1,1,.1
# Use a float layout to round the corners
RoundedRectangle:
pos: self.pos
size: self.size
RecycleView:
id: recycleView
viewclass: 'ItemWidget'
RecycleGridLayout:
cols: 1
default_size: self.parent.width / 5, dp(60)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
width: self.minimum_width
spacing: dp(155), dp(0)
BoxLayout:
orientation: "vertical"
spacing: dp(10)
BoxLayout:
spacing: dp(10)
BoxLayout:
canvas.before:
Color:
rgba: 1,1,1,.1
# Use a float layout to round the corners
RoundedRectangle:
pos: self.pos
size: self.size
Label:
text: "APPS"
BoxLayout:
canvas.before:
Color:
rgba: 1,1,1,.1
# Use a float layout to round the corners
RoundedRectangle:
pos: self.pos
size: self.size
Label:
text: "OTHER"
BoxLayout:
canvas.before:
Color:
rgba: 1,1,1,.1
# Use a float layout to round the corners
RoundedRectangle:
pos: self.pos
size: self.size
Label:
text: "MOUNTS"
BoxLayout:
canvas.before:
Color:
rgba: 1,1,1,.1
# Use a float layout to round the corners
RoundedRectangle:
pos: self.pos
size: self.size
Label:
text: "RECENT ACTIVITY"
<CoverImage#CoverBehavior+Image>:
reference_size: self.texture_size
<ItemWidget>:
BoxLayout:
#size_hint_max_x: dp(360)
size_hint_min_x: dp(150)
orientation: "horizontal"
BoxLayout:
orientation: "horizontal"
Button:
# Use the on_press to print troubleshooting info, otherwise comment out
on_press: print(self.background_color)
padding: dp(10), dp(10)
text_size: self.size
font_size: dp(22) if root.has_issue else dp(18)
background_color: .5,1,1,.6 #utils.get_random_color(alpha=.6)
halign: "left"
valign: "top"
size: 1,1
# Show last 4 of server name
text: str(root.name).upper()[-4:]
bold: True
color: (1,0,0) if root.has_issue else (1,1,1)
Button:
background_color: .5,1,1,.6
text_size: self.size
valign: "center"
halign: "center"
text: str(root.work)
padding: dp(8), dp(8)
bold: True if root.work > 90 else False
color: (1,0,0) if root.work > 90 else (1,1,1) # Red if greater than 90
"""
Questions:
How do I get the value from this so that I can pass the value instead of the hardcoded username of abc999
MDTextField:
id: username_input
How do I send to the given screen (user_management here) from
def set_current_user(self,user,sm):
self.current_user = user
# Send over to given screen
# ???? = sm
You can toggle commenting on the two on_release below to see the issue
MDFlatButton(
text="OK",
theme_text_color="Custom",
text_color=self.theme_cls.primary_color,
#on_release=self.set_current_user(user,screen)
on_release=self.dialog_close
You can do what you want by modifying set_current_user() to:
def set_current_user(self, button):
self.current_user = self.dialog.content_cls.ids.username_input.text
self.dialog_close()
self.root.ids.users.add_widget(Label(text=self.current_user))
sm = self.root.ids.screenManager
sm.current = 'user_management'
The above code requires the addition of an id to the UserManagerment in the kv:
UserManagement:
id: users
This just adds a new Label with the name of the user.
Related
I'm new to Kivy and I stumbled upon an issue when using the RecycleViw. Basically, I have a switch for every entry in my recycle view to activate or deactivate the text input. This said, when I activate the "profilename_1", it also activates the "profilename_7" (see images below).
Example when OFF:
profilename_1
profilename_7
Example when ON:
profilename_1
profilename_7
If I enable the "profilename_2" it will also enable "profilename_8" and so on. How can I make each entry its own individual element/object, where it's completely independent of one another?
Here's my code:
PYTHON MAIN FILE:
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import ObjectProperty, StringProperty, NumericProperty
from models import Profile
import json
class ProfileWidget(BoxLayout):
profilename = StringProperty()
phonenumber = NumericProperty()
alias = StringProperty()
class MainWidget(FloatLayout):
recycleView = ObjectProperty(None)
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.profiles = fetch_profiles()
def on_parent(self, widget, parent):
self.recycleView.data = [profile.get_dictionary() for profile in self.profiles]
def fetch_profiles():
file = open("data.json")
result = json.load(file)
profile_list = []
for x in result['profiles']:
profile = Profile(x["profilename"], x["phonenumber"], x["alias"])
profile_list.append(profile)
return profile_list
class SwitchTestApp(App):
pass
SwitchTestApp().run()
MODELS.PY FILE (UPDATE)
class Profile:
profilename = ""
phonenumber = 0
alias = ""
def __init__(self, profilename, phonenumber, alias):
self.profilename = profilename
self.phonenumber = phonenumber
self.alias = alias
def get_dictionary(self):
return {"profilename": self.profilename, "phonenumber": self.phonenumber, "alias": self.alias}
KIVY FILE (named SwitchTest.kv in this case):
#:import utils kivy.utils
#:set color1 "#DD7835"
MainWidget:
<MainWidget>:
recycleView: recycleView
BoxLayout:
orientation: "vertical"
FitLabel:
text: "PROFILES LIST"
color: 1, 1, 1, 1
font_size: dp(22)
canvas.before:
Color:
rgb: utils.get_color_from_hex(color1)
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
padding: dp(100), dp(20)
RecycleView:
id: recycleView
viewclass: "ProfileWidget"
RecycleBoxLayout:
default_size: None, dp(115)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
spacing: dp(16)
<ProfileWidget>:
BoxLayout:
orientation: "vertical"
Label:
text: root.profilename
color: 1, 1, 1, 1
bold: True
font_size: dp(22)
text_size: self.size
halign: "left"
valign: "center"
BoxLayout:
FmtLabel:
text: "Profile Name: "
TextInput:
text: str(root.profilename).upper()
disabled: not switchID.active
on_text_validate: root.on_text_validate(self)
BoxLayout:
FmtLabel:
text: "Phone Number: "
TextInput:
text: str(int(root.phonenumber))
disabled: not switchID.active
BoxLayout:
FmtLabel:
text: "Alias: "
TextInput:
text: str(root.alias)
disabled: not switchID.active
BoxLayout:
orientation: "vertical"
padding: dp(20), dp(15)
Switch:
id: switchID
size_hint: None, 1
width: "100dp"
active: False
# on_active: root.switch_click(self, self.active)
Button:
text: "SAVE"
size_hint: None, None
width: "100dp"
height: "25dp"
opacity: 0 if not switchID.active else 1
bold: True
background_color: 0,1,0,1
disabled: not switchID.active
BoxLayout:
size_hint_y: 0.8
<FmtLabel#Label>:
color: 1, 1, 1, 1
text_size: self.size
halign: "left"
valign: "center"
<FitLabel#Label>:
color: 1, 0, 0, 1
size_hint: None, None
size: self.texture_size
I've tried assigning IDs to each element and playing with that, but no success either.
Also, this is my first post on StackOverflow, if I didn't do it right, please let me know! :)
Thank you!
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
I am trying to code a simple quiz game. There're supposed to be multiple screens, the first screen (LoginWindow) being a simple login form. After the login and confirmation of the right name and password being entered the second screen (GameWindow) is supposed to show up, but it doesn't. Right from the start the second screen is being loaded.
I'm sure I am missing something super simple and basic but I just don't get it.
.py file:
from kivy.app import App
from kivy.properties import ObjectProperty
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.screenmanager import ScreenManager, Screen
import hashlib
Window.size = (512, 512)
user_hash = ""
pass_hash = ""
super_user = "9279F4A7C1C145D5AE930FDA23EF386168F6720B4E0F0D3DEE383C5AD8535737"
super_pass = "EE22032527082315A747781829EF1F9195F6AEAC09C0D52DE06EBF9D8C463918"
# Define screens
class LoginWindow(Screen):
name = ObjectProperty(None)
passw = ObjectProperty(None)
def press(self):
user_hash = hashlib.sha256(self.name.text.encode('utf-8')).hexdigest().upper()
pass_hash = hashlib.sha256(self.passw.text.encode('utf-8')).hexdigest().upper()
if (user_hash == super_user) and (pass_hash == super_pass):
print("Das hat geklappt!")
WindowManager.current = 'game'
else:
print("Du kummst hier net rein!")
class GameWindow(Screen):
pass
class WindowManager(ScreenManager):
pass
kv = Builder.load_file('box_multiscreen.kv')
class Affenquiz(App):
def build(self):
Window.clearcolor = (0.8, 0.8, 0.8, 1)
WindowManager = ScreenManager()
WindowManager.add_widget(LoginWindow(name='login'))
WindowManager.add_widget(GameWindow(name='game'))
WindowManager.current = 'login'
return kv
if __name__ == "__main__":
Affenquiz().run()
.kv file:
WindowManager:
LoginWindow:
name: "login"
GameWindow:
name: "game"
<LoginWindow>:
name:name
passw:passw
BoxLayout:
orientation: "vertical"
size: root.width, root.height
spacing: 20
padding: 20
canvas.before:
Rectangle:
pos: self.pos
size: self.size
source: 'monkey.png'
AnchorLayout:
anchor_y: 'top'
BoxLayout:
orientation: "horizontal"
size_hint: (1, None)
height: 50
Label:
text: "Der Quizfelsen"
font_size: 50
BoxLayout:
orientation: "horizontal"
size_hint: (1, None)
height: 50
Label:
text: "Benutzer:"
TextInput:
id: name
multiline:False
background_color: (241/255.0,241/255.0,241/255.0,0.9)
BoxLayout:
orientation: "horizontal"
size_hint: (1, None)
height: 50
Label:
text: "Passwort:"
TextInput:
id: passw
multiline:False
background_color: (241/255.0,241/255.0,241/255.0,0.9)
RoundedButton:
text: "Login"
pos_hint: {'center_x': .5}
size_hint: (1, None)
height: 50
on_press: root.press()
<GameWindow>:
Label:
text: "Der Quizfelsen"
font_size: 50
<Label>
font_size: 32
background_normal: ''
background_color: (0.9,0.9,0.9,0)
canvas.before:
Color:
rgba: self.background_color
Rectangle:
size: self.size
pos: self.pos
color: (184/255.0,70/255.0,35/255.0,1)
bold: True
outline_color: (1,1,1,1)
outline_width: 2
<RoundedButton#Button>
background_color: (0,0,0,0)
background_normal: ''
canvas.before:
Color:
rgba: (184/255.0,70/255.0,35/255.0,0.9)
RoundedRectangle:
size: self.size
pos: self.pos
radius: [25]
Thank you in advance
This is how my program looks right now.
How can I position my button "Log in" to always be horizontally aligned with center? I've tried looking on Stack Overflow about similar stuff but nothing worked for me... If anyone can help me, I would be really thankful.
Here's my python code:
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.core.window import Window
from kivy.uix.gridlayout import GridLayout
import kivy.properties as kyprops
from kivy.uix.widget import Widget
from kivy.uix.image import Image
Builder.load_file("main.kv")
Window.clearcolor = (1,1,1,1)
# Declare both screens
class LoginScreen(Screen):
#txt_inpt = kyprops.ObjectProperty(None)
#def __init__(self):
pass
class InfoScreen(Screen):
pass
# Create the screen manager
sm = ScreenManager()
sm.add_widget(LoginScreen(name='Login'))
sm.add_widget(InfoScreen(name='Info'))
class TestApp(App):
def build(self):
return sm
if __name__ == '__main__':
TestApp().run()
Here is my .kv code:
#:import C kivy.utils.get_color_from_hex
<LoginScreen>:
RelativeLayout:
txt_inpt: txt_inpt
canvas:
Color:
rgba: C('#336699')
Line:
width: 2
rectangle: (0,self.height-50,self.width,0)
id: linija
Ellipse:
pos: self.width- 35, self.height-15
size: 7 , 7.0000000001
angle_start: 0
angle_end: 360
Ellipse:
pos: self.width- 35, self.height-27
size: 7 , 7.0000000001
angle_start: 0
angle_end: 360
Ellipse:
pos: self.width- 35, self.height-39
size: 7 , 7.0000000001
angle_start: 0
angle_end: 360
TextInput:
id: txt_inpt
password: True
multiline: False
hint_text: 'Username'
hint_text_color: C('#b3ccff')
size_hint_x: 0.9
size_hint_y: None
pos_hint: {"x":0.05, "top":0.8}
background_color: (1,1,1,0.2)
on_text_validate: root.manager.current = 'Info'
height: 30
pos: 300,60
TextInput:
id: txt_inpt
password: True
multiline: False
hint_text: 'Password'
hint_text_color: C('#b3ccff')
size_hint_x: 0.9
size_hint_y: None
pos_hint: {"x":0.05, "top":0.7}
background_color: (1,1,1,0.2)
on_text_validate: root.manager.current = 'Info'
height: 30
pos: 300,60
BoxLayout:
width: 1
pos: self.parent.pos # important!
orientation: 'vertical'
halign: 'center'
Button:
on_press: root.manager.current = 'Info'
background_color: C('#336699')
pos: self.pos
size: self.size
size: 80,30
size_hint: None, None
## NOTE: pos_hint: {"x":0.45, "top":0.6}
font_name: 'Droid.otf'
text: 'Log in'
<InfoScreen>:
BoxLayout:
Button:
text: 'My settings button'
Button:
text: 'Back to menu'
on_press: root.manager.current = 'Login'
Your line in kv:
pos: self.parent.pos # important!
is positioning the BoxLayout in the lower left corner of the RelativeLayout
You can center it by using pos_hint and minimum_width:
BoxLayout:
# width: 1
# pos: self.parent.pos # important!
pos_hint: {'center_x':0.5, 'y':0}
size_hint_x: None
width: self.minimum_width
orientation: 'vertical'
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.