目标：
注意：您已经在我的代码中看到我还没有尝试将按钮bg颜色状态保存到文件中，因为我还在尝试获取文件事件发挥作用。
我收到以下错误：
File "C:/Users/phili/scrollablelabelexample.py", line 45, in create_button
button_share.bind(on_press = self.update_buttons_departoverride(self))
TypeError: update_buttons_departoverride() takes 1 positional argument but 2 were given
Python代码：
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition
from kivy.uix.textinput import TextInput
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.widget import Widget
from kivy.uix.scrollview import ScrollView
from kivy.properties import StringProperty, ObjectProperty, NumericProperty
from kivy.clock import Clock
import pandas as pd
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.label import Label
class AnotherScreen(Screen):
pass
class BackHomeWidget(Widget):
pass
class Sequence(Screen):
pass
class ScreenManagement(ScreenManager):
pass
class MainScreen(Screen):
pass
class CleanScreen(BoxLayout):
def __init__(self, **kwargs):
super(CleanScreen, self).__init__(**kwargs)
self.orientation = "vertical"
Clock.schedule_once(lambda *args:self.create_button(self.ids.box_share))
def create_button(self, box_share):
top_button_share = 1.1
color = [.48,.72,.23,1]
for i in range(len(parts)):
top_button_share -= .4
button_share = Button(background_normal = '', background_color = color, id = "part"+str(i+1),pos_hint={"x": 0, "top": top_button_share}, size_hint_y=None, height=60, text=str(i))
button_share.bind(on_press = self.update_buttons_departoverride(self))
box_share.add_widget(button_share)
def update_buttons_departoverride(self):
self.background_color = 1.0, 0.0, 0.0, 1.0
presentation = Builder.load_file("garagemainexample.kv")
class MainApp(App):
def build(self):
return presentation
if __name__ == "__main__":
MainApp().run()
Kv代码：
#: import FadeTransition kivy.uix.screenmanager.FadeTransition
ScreenManagement:
transition: FadeTransition()
MainScreen:
Sequence:
<BigButton@Button>:
font_size: 40
size_hint: 0.5, 0.15
color: 0,1,0,1
<SmallNavButton@Button>:
font_size: 32
size: 125, 50
color: 0,1,0,1
<BackHomeWidget>:
SmallNavButton:
on_release: app.root.current = "main"
text: "Home"
pos: root.x, root.top - self.height
<MainScreen>:
name: "main"
FloatLayout:
BigButton:
on_release: app.root.current = "sequence"
text: "Sequence"
pos_hint: {"x":0.25, "top": 0.4}
<CleanScreen>:
ScrollView:
GridLayout:
id: box_share
cols: 1
size_hint_y: None
size_hint_x: 0.5
spacing: 5
padding: 90
height: self.minimum_height
canvas:
Color:
rgb: 0, 0, 0
Rectangle:
pos: self.pos
size: self.size
<Sequence>:
name: "sequence"
CleanScreen:
id: cleanscreen
BackHomeWidget:
答案 0 :(得分：0)
使用button_share.bind (on_press = self.update_buttons_departoverride (self)) 您正在调用该方法，因此您尝试将on_press与None self.update_buttons_departoverride绑定在一起} return None）。如果您想传递参数，请使用lambda或functools.partial：
from functools import partial
button_share.bind(on_press=partial(self.update_buttons_departoverride, arg1,...))
但是，如果您只需要传递按钮的引用，它就会自动传递。你必须这样做：
button_share.bind(on_press=self.update_buttons_departoverride)
和
def update_buttons_departoverride(self, button):
要存储小部件的配置，您可以使用Storage。使用DictStore的简化示例：
<强> main.py：
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition
from kivy.uix.widget import Widget
from kivy.clock import Clock
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.properties import ObjectProperty
from kivy.storage.dictstore import DictStore
class AnotherScreen(Screen):
pass
class BackHomeWidget(Widget):
pass
class Sequence(Screen):
pass
class ScreenManagement(ScreenManager):
pass
class MainScreen(Screen):
pass
class CleanScreen(BoxLayout):
box_share = ObjectProperty()
config_file = DictStore('conf.dat')
def __init__(self, **kwargs):
super(CleanScreen, self).__init__(**kwargs)
self.orientation = "vertical"
Clock.schedule_once(self.create_button)
def create_button(self, *args):
top_button_share = 1.1
color = (.48, .72, .23, 1)
for i in range(5):
top_button_share -= .4
id_ = "part" + str(i + 1)
if self.config_file.exists(id_):
btn_color = self.config_file[id_]["background_color"]
else:
self.config_file.put(id_, background_color=color)
btn_color = color
button_share = Button(background_normal='',
background_color=btn_color,
id=id_,
pos_hint={"x": 0, "top": top_button_share},
size_hint_y=None,
height=60,
text=str(i))
button_share.bind(on_press=self.update_buttons_departoverride)
self.box_share.add_widget(button_share)
def update_buttons_departoverride(self, button):
button.background_color = 1.0, 0.0, 0.0, 1.0
self.config_file.put(button.id, background_color=(1.0, 0.0, 0.0, 1.0))
presentation = Builder.load_file("garagemainexample.kv")
class MainApp(App):
def build(self):
return presentation
if __name__ == "__main__":
MainApp().run()
<强> garagemainexample.kv：
#: import FadeTransition kivy.uix.screenmanager.FadeTransition
ScreenManagement:
transition: FadeTransition()
MainScreen:
Sequence:
<BigButton@Button>:
font_size: 40
size_hint: 0.5, 0.15
color: 0,1,0,1
<SmallNavButton@Button>:
font_size: 32
size: 125, 50
color: 0,1,0,1
<BackHomeWidget>:
SmallNavButton:
on_release: app.root.current = "main"
text: "Home"
pos: root.x, root.top - self.height
<MainScreen>:
name: "main"
FloatLayout:
BigButton:
on_release: app.root.current = "sequence"
text: "Sequence"
pos_hint: {"x":0.25, "top": 0.4}
<CleanScreen>:
box_share: box_share
ScrollView:
GridLayout:
id: box_share
cols: 1
size_hint_y: None
size_hint_x: 0.5
spacing: 5
padding: 90
height: self.minimum_height
canvas:
Color:
rgb: 0, 0, 0
Rectangle:
pos: self.pos
size: self.size
<Sequence>:
name: "sequence"
CleanScreen:
id: cleanscreen
BackHomeWidget: