如何删除 BoxLayout？

Question

我想删除我的小部件中的 Boxlayout，但我不能。

在名为“Speca”的应用程序开头有一个 Boxlayout。在我的选择之后，它必须被删除。

当您运行应用程序时，在“主页”微调器中选择一些内容，然后单击任何新的切换按钮。

按下任何切换按钮后，“Speca”必须消失。

请帮忙

这里是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()

这里是 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"

请运行应用程序查看。

Answer 1

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

是的。

当我进行这些更改时；

Kv

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

py

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

有效。

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