如何移除BoxLayout?

Question

我想在我的小部件中删除Boxlayout，但是我不能。

在应用程序的开头有一个名为"Speca"的Boxlayout。在我选择之后，它必须被删除。

当你运行应用程序时，在"Home"旋转并单击任何新的切换按钮。

按下任何切换按钮" special "必须消失。

请帮助。

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()

这是我的。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"

请运行应用程序查看。

Answer 1

在我看来speca是ID为scd的计算小部件的子组件。所以给speca一个ID，然后在on_srate python函数中通过ID删除speca。

Kv

SecondPage:
Calculation:
id:scd
speca:
id: speca

py

def on_state():
self.root.ids.scd.remove_widget(self.root.ids.speca)

Answer 2

YES.

当我做这些改变时;

Kv

SecondPage:
Calculation:
id:scd
speca:
id: speca

py

def on_state():
self.ids.scd.remove_widget(self.ids.speca)

。