Kivy 计算按下 "Counter" 按钮时打开的 ToggleButton 的数量

Question

在这段代码中，我有一堆座位（ToggleButtons），我想数一数。按下按钮“计数器”时选择或打开的切换按钮的数量。我不确定，为了获得结果，我是否必须从所有 ToggleButtons（座位）单独调用一个函数，或者在主按钮“计数器”中调用一个函数。如果可能的话，我也需要打印他们的 ID。

主要代码：

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.lang import Builder
from kivy.uix.widget import Widget
from kivy.uix.screenmanager import Screen,ScreenManager


class Main(Screen):
    def counter(self,widget):
        pass # what to put here? or do u have any other method
class Manager(ScreenManager):
    pass
kv=Builder.load_file("test2.kv")
screen=Manager()
screen.add_widget(Main(name="main"))

class Test(App):
    def build(self):
        return screen

Test().run()

Kv代码：

<Main>:
    name: "main"
    FloatLayout:
        id: Fl2
        Button:
            id: counter1
            text: "Counter"
            size_hint: (.25,.1)
            pos_hint: {"center_x":.5,"center_y":.3}
            on_press:
                root.counter(self) # this should count no. of buttons that are ON i.e. the selected buttons
        ToggleButton:
            id: Seat_A2
            color: (0,0,0,0)
            text: "Seat_A2"
            size_hint: (.0225,.0120)
            pos_hint: {"center_x":.4,"center_y":.75}
            background_color: (1,1,1,1)
            on_state:
                root.count(self) #i'm not sure if this func needs to be called individually 
on all the toggle buttons or just one func in the counter button (i.e. root.counter(self))... idk the method... 

        ToggleButton:
            id: Seat_A3
            color: (0,0,0,0)
            text: "Seat_A3"
            size_hint: (.0225,.0120)
            pos_hint: {"center_x":.4225,"center_y":.75}
            background_color: (1,1,1,1)
            on_state:
                root.count(self)

        ToggleButton:
            id: Seat_A6
            color: (0,0,0,0)
            text: "Seat_A6"
            size_hint: (.0225,.0120)
            pos_hint: {"center_x":.4900,"center_y":.75}
            background_color: (1,1,1,1)
            on_state:
                root.count(self)

        ToggleButton:
            id: Seat_A7
            color: (0,0,0,0)
            text: "Seat_A7"
            size_hint: (.0225,.0120)
            pos_hint: {"center_x":.5120,"center_y":.75}
            background_color: (1,1,1,1)
            on_state:
                root.count(self)


        ToggleButton:
            id: Seat_A10
            color: (0,0,0,0)
            text: "Seat_A10"
            size_hint: (.0225,.0120)
            pos_hint: {"center_x":.5800,"center_y":.75}
            background_color: (1,1,1,1)
            on_state:
                root.count(self)

        ToggleButton:
            id: Seat_A11
            color: (0,0,0,0)
            text: "Seat_A11"
            size_hint: (.0225,.0120)
            pos_hint: {"center_x":.6025,"center_y":.75}
            background_color: (1,1,1,1)
            on_state:
                root.count(self)

Answer 1

您可以处理包含 ToggleButtons 的 FloatLayout 的子项，如下所示：

def counter(self,widget):
    toggles = []
    for child in self.ids.Fl2.children:
        if isinstance(child, ToggleButton):
            if child.state == 'down':
                toggles.append(child.text)
    print(len(toggles), 'ToggleeButtons active:', toggles)

Kivy 计算按下 "Counter" 按钮时打开的 ToggleButton 的数量

Kivy Count the No. of ToggleButtons that are ON on pressing a "Counter" Button

python

button

kivy

kivy-language