I want to remove a Boxlayout in my widget, but I cant.
There is a Boxlayout at the begining of the app called "Speca". After my sellections it must be removed.
When you run the app, sellect something in "Home" Spinner and click any of the new Toggle buttons.
Wtih the press of any of the Toggle buttons "Speca" must disappear.
Please help.
Here is main.py:
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.spinner import Spinner
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.properties import ObjectProperty, StringProperty, BooleanProperty
from kivy.properties import ListProperty
from collections import OrderedDict
from kivy.uix.togglebutton import ToggleButton
data1=["mother","father","son"]
data2=["uncle","aunt","grandfather"]
data3=["jack","mike","simon"]
data4=["1898","1975","1985","1885"]
amd="0dp"
class MainWidget(Widget):
def remove_layout(self, *ignore):
self.remove_widget(self.layout)
global amd
an0=tuple(list(OrderedDict.fromkeys(data1)))
cal5= ObjectProperty()
cal6= ObjectProperty()
def btn10(self,text):
if self.cal5:
self.cal5.parent.remove_widget(self.cal5)
self.cal5 =ModelSpecifications()
a=data2
b=data3
c=data4
mi=[]
n=0
while n < len(a):
aba=n
mi.append(aba)
n+=1
for i in mi:
self.b1=MyTButton(text=str(i),size_hint=(1,None),height="100dp",group="selections")
self.cal5.add_widget(self.b1)
self.ids.scd.add_widget(self.cal5, index=3)
def on_state(self, togglebutton): #<----THIS IS THE TUGGLEBUTTON I WANT USE
global amd
tb = togglebutton
text1=tb.text
if text1=="0":
amd="50dp"
elif text1=="1":
amd="100dp"
else:
amd="200dp"
if self.cal6:
self.cal6.parent.remove_widget(self.cal6)
self.cal6 =Spec()
self.ids.scd.add_widget(self.cal6, index=2)
class SecondPage(ScrollView):
pass
class Speca(BoxLayout): #<------ THIS IS THE BOXLAYOUT I WANT TO REMOVE
pass
class Spec(BoxLayout):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.size_hint=(1,None)
self.height=amd
class MyTButton(ToggleButton):
def __init__(self, **kwargs):
super().__init__(**kwargs)
class ModelSpecifications(BoxLayout): #this is the class I want add after my spinner selection
pass
class Calculation(GridLayout):
pass
class MyApp(App):
pass
MyApp().run()
here is my.kv :
MainWidget:
<MainWidget>:
hideable: hideable
ScreenManager:
id: scmanager
size: root.width, root.height
Screen:
id: scndpage
name: "second"
SecondPage:
Calculation:
id:scd
cols:1
height: self.minimum_height
row_default_height: "70dp"
size_hint_y: None
spacing:"10dp"
canvas.before:
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
size_hint: 1, None
height: "50dp"
pading:"10dp"
spacing:"10dp"
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Label:
text:"Name:"
color: 0,0,0,1
TextInput:
text:"---"
color: 0,0,0,1
Label:
text:"Surname:"
color: 0,0,0,1
TextInput:
text:"-----"
color: 0,0,0,1
BoxLayout:
id:scdd
size_hint: 1, 1
height: "100dp"
orientation: "vertical"
BoxLayout:
size_hint: 1, None
height: "50dp"
orientation: "horizontal"
Label:
text: " Sellection:"
color: 0,0,0,1
Spinner:
text: 'Home'
values: root.an0
on_text: app.root.btn10(self.text)
Speca: #<------ THIS IS THE BOXLAYOUT I WANT TO REMOVE
Button:
text:" Calculate"
Button:
text:"Sellect"
Button:
text:"Back"
<ModelSpecifications>:
id:anss
pading:"10dp"
spacing:"10dp"
size_hint: 1, None
height: "100dp"
orientation: "horizontal"
<MyTButton#ToggleButton>: #<----THIS IS THE TUGGLEBUTTON I WANT USE
on_state:
app.root.on_state(self)
<Speca>: #<------ THIS IS THE BOXLAYOUT I WANT TO REMOVE
orientation:"vertical"
Label:
color: (1,1,0,1)
text:"I WANT TO REMOVE THIS PART WHEN I PRESS ANY OF TOGGLE BUTTONS"
Please run the app and see it.
Looks to me like speca is a child of the calculation widget with ID scd. So give speca an ID and then Remove speca via ids in on_srate python function.
Kv
SecondPage:
Calculation:
id:scd
speca:
id: speca
py
def on_state():
self.root.ids.scd.remove_widget(self.root.ids.speca)
YES.
When I make those changes;
Kv
SecondPage:
Calculation:
id:scd
speca:
id: speca
py
def on_state():
self.ids.scd.remove_widget(self.ids.speca)
It works.
Related
I am trying to change Boxlayout height dynamically. There will an empty Boxlayout at the beginning, then with a ToggleButton I will add Buttons on that Boxlayout vertically. But this Boxlayout locates in Gridlayout which has ScrollView. And the number of buttons I will add will change, so the height of the box layout should change too. But it doesn't change. Could you please help.
Here is my main.py:
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.spinner import Spinner
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.properties import ObjectProperty, StringProperty, BooleanProperty
from kivy.properties import ListProperty
from collections import OrderedDict
data1=["mother","father","son"]
data2=["uncle","aunt","grandfather"]
data3=["jack","mike","simon"]
data4=["1898","1975","1985","1885"]
class MainWidget(Widget):
an0=tuple(list(OrderedDict.fromkeys(data1)))
cal5= ObjectProperty()
def btn10(self,text):
if self.cal5:
self.cal5.parent.remove_widget(self.cal5) #EVERY TIME I NEED TO REMOVE IT BECAUSE MY BUTTON QUANTITIY AND TEXT WILL CHANGE DUE TO TOGGLE BUTTON SELECTION
self.cal5 =ModelSpecifications()
a=data2
b=data3
c=data4
mi=[]
n=0
while n < len(a):
aba=(str(a[n])+"\n"+str(b[n])+"\n"+str(c[n]))
mi.append(aba)
n+=1
for i in mi:
self.b1=Button(text=str(i),size_hint=(1,None),height="10dp")
self.cal5.add_widget(self.b1)
self.ids.scd.add_widget(self.cal5, index=3) #I ADD THE BUTTONS IN HERE
class SecondPage(ScrollView):
pass
some_number=120
calculated_height=(str(some_number)+"dp") #<------I CAN CHANGE THE HEIGHT AT THE BEGINING BUT IT DOSENT CHANGE THE HEIGHT DYNAMICALLY
class ModelSpecifications(BoxLayout):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.size_hint=(1,None)
self.height=calculated_height
class Calculation(GridLayout):
pass
class MyApp(App):
pass
MyApp().run()
And here is my my.kv file:
#:import C kivy.utils.get_color_from_hex
MainWidget:
<MainWidget>:
ScreenManager:
id: scmanager
size: root.width, root.height
Screen:
id: scndpage
name: "second"
SecondPage:
Calculation:
id:scd
cols:1
height: self.minimum_height
row_default_height: "70dp" #<---THIS HEIGHT MUST BE SPECIFY BECAUSE OF SCROLLWIEW
size_hint_y: None
spacing:"10dp"
canvas.before:
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
size_hint: 1, None
height: "50dp"
pading:"10dp"
spacing:"10dp"
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Label:
text:"Name:"
color: 0,0,0,1
TextInput:
text:"---"
color: 0,0,0,1
Label:
text:"Surname:"
color: 0,0,0,1
TextInput:
text:"-----"
color: 0,0,0,1
BoxLayout:
id:scdd
size_hint: 1, 1
height: "100dp"
orientation: "vertical"
BoxLayout:
size_hint: 1, None
height: "50dp"
orientation: "horizontal"
Label:
text: " Sellection:"
color: 0,0,0,1
Spinner:
text: 'Home'
values: root.an0
on_text: app.root.btn10(self.text)
Button:
text:" Calculate"
Button:
text:"Sellect"
Button:
text:"Back"
<ModelSpecifications>: #<---------HOW CAN I DYNAMICALLY CHANGE THE HEIGHT OF THIS WIDGET ?
id:anss
pading:"10dp"
spacing:"10dp"
orientation: "vertical"
canvas.before:
Color:
rgba: (C('EBE4E4'))
RoundedRectangle:
size: self.size
pos: self.pos
radius: [15]
I want to change the height in the python script because I will get the information from another function as variable.
Please run the file. Looking forward to your comments.
I am making a selection app. I am using a spinner for multiple choises. After spinner selection I want to add 3 different buttons, which are related to spinner selection. In every selection in spinner those old buttons replace with new ones.
So far I can add different buttons after every selection. However, the buttons are keep adding. I need to clear the old buttons first after every spinner selection.
My class, which contains buttons is "ModelSpecifications".
Long story short, there is something wrong in clear_widgets(). It cant reach "ModelSpecifications".
Here is my main.py;
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.spinner import Spinner
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.properties import ObjectProperty, StringProperty, BooleanProperty
from kivy.properties import ListProperty
from collections import OrderedDict
data1=["mother","father","son"]
data2=["uncle","aunt","grandfather"]
data3=["jack","mike","simon"]
data4=["1898","1975","1985","1885"]
class MainWidget(Widget):
an0=tuple(list(OrderedDict.fromkeys(data1)))
cal5= ObjectProperty()
def btn10(self,text):
#----------here is the part I want to clear the buttons first:
#ModelSpecifications.clear_widgets(ModelSpecifications)
# or
#self.ids["anss"].clear_widgets()
# after that I will add new buttons:
self.cal5 =ModelSpecifications()
a=data2
b=data3
c=data4
mi=[]
n=0
while n < len(a):
aba=(str(a[n])+"\n"+str(b[n])+"\n"+str(c[n]))
mi.append(aba)
n+=1
for i in mi:
self.b1=Button(text=str(i),size_hint=(1,None),height="100dp")
self.cal5.add_widget(self.b1)
self.ids.scd.add_widget(self.cal5, index=3) #here id.scd is the class that ModelSpecifications class is added. And it works fine.
class SecondPage(ScrollView):
pass
class ModelSpecifications(BoxLayout): #this is the class I want add after my spinner selection
pass
class Calculation(GridLayout):
pass
class MyApp(App):
pass
MyApp().run()
And here is my.kv ;
MainWidget:
<MainWidget>:
ScreenManager:
id: scmanager
size: root.width, root.height
Screen:
id: scndpage
name: "second"
SecondPage:
Calculation:
id:scd
cols:1
height: self.minimum_height
row_default_height: "70dp"
size_hint_y: None
spacing:"10dp"
canvas.before:
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
size_hint: 1, None
height: "50dp"
pading:"10dp"
spacing:"10dp"
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Label:
text:"Name:"
color: 0,0,0,1
TextInput:
text:"---"
color: 0,0,0,1
Label:
text:"Surname:"
color: 0,0,0,1
TextInput:
text:"-----"
color: 0,0,0,1
BoxLayout:
id:scdd
size_hint: 1, 1
height: "100dp"
orientation: "vertical"
BoxLayout:
size_hint: 1, None
height: "50dp"
orientation: "horizontal"
Label:
text: " Sellection:"
color: 0,0,0,1
Spinner:
text: 'Home'
values: root.an0
on_text: app.root.btn10(self.text)
Button:
text:" Calculate"
Button:
text:"Sellect"
Button:
text:"Back"
<ModelSpecifications>:
id:anss #HERE IS MY CLASS THAT I WANT TO CLEAR AND ADD AFTER EVERY SPINNER SELECTION
pading:"10dp"
spacing:"10dp"
size_hint: 1, None
height: "100dp"
orientation: "horizontal"
When you run this code sellect something in spinner. You will see in every selection, app keeps add more buttons;
In your btn10() method, just add:
if self.cal5:
self.cal5.parent.remove_widget(self.cal5)
before the line:
self.cal5 = ModelSpecifications()
I have a kind of major problem here. I want to create a list at the bottom of my app. I have a dictionary which works on this guy's solution: How to put multiple columns into a kivy RecycleView?
HOWEVER, I want to add that widget with button. Everything looks fine but I have problem with ids.
Please take a look at it, "FinalList" class cant find variables.
When you run it click "Calculate selections" it adds another class which has another button called "Confirm". Click "Confirm", it should add list at the bottom but it does not.
here is my main.py code;
from kivy.animation import Parallel
from kivy.app import App
from kivymd.app import MDApp
from kivy.uix.gridlayout import GridLayout
from kivy.uix.recycleview import RecycleView
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.stacklayout import StackLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.scrollview import ScrollView
from kivy.uix.button import Button
from kivy.uix.checkbox import CheckBox
from kivy.uix.label import Label
from kivy.uix.popup import Popup
from kivy.core.window import Window
from kivy.lang import Builder
from functools import partial
from kivy.properties import ObjectProperty, StringProperty, BooleanProperty
#Window.size=((640/1.5),(960/1.5))
items = [{'SP1': 'Artikelnummer', 'SP2': 'Name', 'SP3': 'Groesse'},
{'SP1': '510001', 'SP2': 'Big Pump', 'SP3': '1.50 L'},
{'SP1': '523001', 'SP2': 'Leonie Still', 'SP3': '1.50 L'},
{'SP1': '641301', 'SP2': 'Cola Mix', 'SP3': '1.50 L'}
]
class MainWidget(Widget):
cal2= ObjectProperty()
cal4= ObjectProperty()
def btn4(self):
self.cal2 = MaterialS() #MaterialS is my class with different widget
self.ids.scd.add_widget(self.cal2, index=0) #scd is the id of my main widget, index =0 help me to insert to the bottom
def btn8(self):
self.cal4 = RV() **#HERE I CALL THE RV CLASS**
self.ids.scd.add_widget(self.cal4, index=0)
class SecondPage(ScrollView):
pass
class Calculation(GridLayout):
pass
class MaterialS(BoxLayout):
def btn7(self,x):
self.ids[x].disabled= True
def btn9(self,x):
self.ids[x].disabled= True
class FinalList(BoxLayout):
pass
class RV(RecycleView):
def __init__(self, **kwargs):
super(RV, self).__init__(**kwargs)
self.data = [{'spalte1_SP': str(x['SP1']), 'spalte2_SP': str(x['SP2']), 'spalte3_SP': str(x['SP3'])} for x in items]
class MyApp(MDApp):
pass
MyApp().run()
here is my.kv file;
MainWidget:
<MainWidget>:
ScreenManager:
id: scmanager
size: root.width, root.height
Screen:
id: scndpage
name: "second"
SecondPage:
Calculation:
id:scd
cols:1
height: self.minimum_height
row_default_height: "70dp"
size_hint_y: None
spacing:"10dp"
canvas.before:
Rectangle:
pos: self.pos
size: self.size
Button:
id: cslect
text:"Calculate Selections"
on_press: app.root.btn4()
<MaterialS>:
pading:"10dp"
spacing:"10dp"
size_hint: 1, None
height: "250dp"
orientation:"vertical"
BoxLayout:
size_hint: 1, 1
orientation:"horizontal"
Label:
text:"cutter head material"
color: 0,0,0,1
Button:
id: btnStd
text:"Confirm"
on_press: app.root.btn8()
on_release: root.btn9("btnStd")
<Optionals>:
BoxLayout:
orientation: "vertical"
Button:
id: btnStd
text:"Confirm"
on_press: app.root.btn8()
on_release: root.btn9("btnStd")
<FinalList>:
orientation: 'horizontal'
spalte1_SP: 'spalte1'
spalte2_SP: 'spalte2'
spalte3_SP: 'spalte3'
Label:
id: SP1
text: app.root.spalte1_SP **#HERE IS THE MAIN PROBLEM**
Label:
id: SP2
text: app.root.spalte2_SP **#HERE IS THE MAIN PROBLEM**
Label:
id: SP3
text: app.root.spalte3_SP **#HERE IS THE MAIN PROBLEM**
<RV>:
viewclass: 'FinalList'
RecycleBoxLayout:
default_size: None, dp(20)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
You just need to correct your references to the properties of the FinalList. Like this:
<FinalList>:
orientation: 'horizontal'
spalte1_SP: 'spalte1'
spalte2_SP: 'spalte2'
spalte3_SP: 'spalte3'
Label:
id: SP1
text: root.spalte1_SP #**#HERE IS THE MAIN PROBLEM**
Label:
id: SP2
text: root.spalte2_SP #**#HERE IS THE MAIN PROBLEM**
Label:
id: SP3
text: root.spalte3_SP #**#HERE IS THE MAIN PROBLEM**
I am pretty new to the kivy language and faced this problem when try to run the following code. it just runs without any errors. But it just only generate a blank application. without any widgets.
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager
from kivy.uix.gridlayout import GridLayout
from kivymd.uix.boxlayout import MDBoxLayout
kv = """
<SCManager>:
Screen:
c_screen:
<c_screen>:
cols: 2
canvas.before:
Color:
rgba: 1,0,0,1
Rectangle:
pos: self.pos
size: self.size
MDBoxLayout:
md_bg_color: (1, 1, 1 ,1)
padding: 10
adaptive_height: True
MDLabel:
text: "helow 2"
color: (0.0003, 0.34, 0.60,1)
font_style: "H6"
halign: "left"
adaptive_height: True
<navigator>:
canvas.before:
Color:
rgba: 1,1,0,1
Rectangle:
pos: self.pos
size: self.size
orientation: "vertical"
MDLabel:
text: "hellow"
adaptive_height: True
MDList:
OneLineAvatarListItem:
text : "Dashboard"
IconLeftWidgetWithoutTouch:
icon: "view-dashboard"
OneLineAvatarListItem:
text : "Manage Users"
IconLeftWidgetWithoutTouch:
icon: "account"
MDRoundFlatIconButton:
text: "bye"
font_size: 11
"""
class SCManager(ScreenManager):
pass
class navigator(MDBoxLayout):
pass
class c_screen(GridLayout):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.n = navigator()
self.add_widget(self.n)
class test(MDApp):
def build(self):
Builder.load_string(kv)
return SCManager()
if __name__ == '__main__':
test().run()
But if i add another widget(a label) to Screen from kv string, it works fine or if i use add_widget(c_screen) in SCManager it works fine.But i need to add c_screen class from the kv string. Is there any way to add widgets without adding any widgets to Screen??
here is the working code
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager
from kivy.uix.gridlayout import GridLayout
from kivymd.uix.boxlayout import MDBoxLayout
kv = """
<SCManager>:
Screen:
MDLabel:
text: "helow 2"
adaptive_height: True
c_screen:
<c_screen>:
cols: 2
canvas.before:
Color:
rgba: 1,0,0,1
Rectangle:
pos: self.pos
size: self.size
MDBoxLayout:
md_bg_color: (1, 1, 1 ,1)
adaptive_height: True
MDLabel:
text: "helow 2"
adaptive_height: True
<navigator>:
canvas.before:
Color:
rgba: 1,1,0,1
Rectangle:
pos: self.pos
size: self.size
orientation: "vertical"
MDLabel:
text: "hellow"
adaptive_height: True
MDList:
OneLineAvatarListItem:
text : "Dashboard"
IconLeftWidgetWithoutTouch:
icon: "view-dashboard"
OneLineAvatarListItem:
text : "Manage Users"
IconLeftWidgetWithoutTouch:
icon: "account"
MDRoundFlatIconButton:
text: "bye"
font_size: 11
"""
class SCManager(ScreenManager):
pass
class navigator(MDBoxLayout):
pass
class c_screen(GridLayout):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.n = navigator()
self.add_widget(self.n)
class test(MDApp):
def build(self):
Builder.load_string(kv)
return SCManager()
if __name__ == '__main__':
test().run()
this code returns me a black screen, what am I doing wrong?
python file:
from kivy.app import App
from kivy.metrics import dp
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.gridlayout import GridLayout
from kivy.uix.stacklayout import StackLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.pagelayout import PageLayout
class myPageLayout(PageLayout):
pass
class myScrollView(ScrollView):
pass
class myStackLayout(StackLayout):
def __init__(self, **kwargs):
super().__init__(**kwargs)
for i in range(1,101):
size=dp(100)
b= Button(text=str(i),size_hint=(None,None),size=(size,size))
self.add_widget(b)
class myGridLayout(GridLayout):
pass
class myAnchorLayout(AnchorLayout):
pass
class myBoxLayout(BoxLayout):
pass
class myWidget(Widget):
pass
class gameApp(App):
pass
gameApp().run()
kivy file:
myPageLayout:
<myBoxLayout>:
orientation: "horizontal"
spacing: "10dp"
Button:
text: "ciao"
size_hint: 1,.5
size: "10dp","10dp"
pos_hint: { "y": .5 }
BoxLayout:
orientation: "vertical"
spacing: "10dp"
Button:
text: "b1"
Button:
text: "b2"
Button:
text: "b3"
Button:
text: "hi2"
<myWidget>:
Button:
text: "hi"
size: "100dp","20dp"
pos: 300, 100
<myAnchorLayout>:
#anchor_x: "right"
anchor_y: "bottom"
BoxLayout:
size_hint: .1,.1
Button:
text: "hi"
Button:
text: "hi2"
<myGridLayout>:
cols: 3
rows: 3
Button:
text:"hi"
size_hint:.5,1
Button:
text:"hi"
Button:
text:"hi"
myAnchorLayout:
size_hint:.5,1
Button:
text:"hi"
myBoxLayout:
Button:
text:"hi"
size_hint:.5,1
myWidget:
Button:
text:"hi"
<myStackLayout>:
#orientation:"tb-lr"
#padding:("20dp","20dp","20dp","20dp")
#spacing: "10dp","10dp"
<myScrollView>:
myStackLayout:
size_hint:1,None
height: self.minimum_height
<myPageLayout>:
myBoxLayout:
myAnchorLayout:
myWidget:
myGridLayout:
singularly layouts work and even if embedded like in the case of "myAnchorLayout" and "myGridLayouts".
I also tried to create a new StackLayout in "myScrollView" this way:
<myScrollView>:
StackLayout:
size_hint:1,None
height: self.minimum_height
Button:
text:"hi"
size_hint:.7,None
height:"500dp"
Button:
text:"hi"
size_hint:.7,None
height:"500dp"
and it worked, but now it doesn't work anymore, this appened with "myPageLayout" too.
The problem is that the kv language insists that class names start with a capital letter. The documentation says:
Keep class names capitalized to avoid syntax errors
I think your code will work if you change all your class names to meet that requirement.
.