Python 获取KivyMD（MDList）上小部件的索引
我正在尝试构建一个应用程序，它在Python和KivyMD中有一个调度管理器。代码的第一页是显示计划的地方，另一页是您将添加信息的地方。在第二页填写表单后，将更新仪表板窗口，并将注册的活动信息添加到MDList小部件中。左上角的MDCard保存活动的平均时间，右上角的MDCard保存已注册活动的数量 如果用户在注册时出错（向右滑动MDList项目并单击垃圾桶图标），则用户将有机会删除以前注册的活动。当然，删除后需要更新小部件的值。我的问题出现在尝试更新活动的平均时间时：要计算所有金额保存到列表中的平均时间，我要做的是获取MDList中删除的项目的索引。因此，我可以删除相应的金额，并进行准确的计算。（实际上，我刚刚选择了要删除的索引为0，因此删除的项目将始终是列表中的第一个项目 Python文件：Python 获取KivyMD（MDList）上小部件的索引,python,list,indexing,kivy,kivymd,Python,List,Indexing,Kivy,Kivymd,我正在尝试构建一个应用程序，它在Python和KivyMD中有一个调度管理器。代码的第一页是显示计划的地方，另一页是您将添加信息的地方。在第二页填写表单后，将更新仪表板窗口，并将注册的活动信息添加到MDList小部件中。左上角的MDCard保存活动的平均时间，右上角的MDCard保存已注册活动的数量 如果用户在注册时出错（向右滑动MDList项目并单击垃圾桶图标），则用户将有机会删除以前注册的活动。当然，删除后需要更新小部件的值。我的问题出现在尝试更新活动的平均时间时：要计算所有金额保存到列表中
from kivymd.app import MDApp
from kivy.uix.screenmanager import ScreenManager, Screen
from kivymd.toast import toast
from kivymd.uix.menu import MDDropdownMenu
from kivy.clock import Clock
from kivy.config import Config
from kivy.core.window import Window
from kivy.utils import platform
from kivy.properties import StringProperty
from kivymd.uix.card import MDCardSwipe
from kivymd.uix.button import MDIconButton, MDTooltip
from kivymd.uix.behaviors.toggle_behavior import MDToggleButton
from kivymd.uix.button import MDRectangleFlatButton
if platform not in ('android', 'ios'):
Config.set('graphics', 'resizable', '0')
Window.size = (600, 700)
class TooltipMDIconButton(MDIconButton, MDTooltip):
pass
class MyToggleButton(MDRectangleFlatButton, MDToggleButton):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.background_down = self.theme_cls.primary_light
class SwipeToDeleteItem(MDCardSwipe):
text = StringProperty()
secondary_text = StringProperty()
def remove_item(self, instance):
dash = MDApp.get_running_app().root.get_screen('dash')
dash.ids.md_list.remove_widget(instance)
if dash.number_items_mdlist > 0:
dash.number_items_mdlist -= 1
dash.ids.numero_actividades_dash.text = str(dash.number_items_mdlist)
# MODIFY INDEX SO TO MATCH THE MDLIST INDEX
index = instance.id
dash.minutes_items_mdlist -= int(dash.duracion_actividades_list[0]) # Should replace '0' with 'index'
if int(dash.number_items_mdlist) != 0:
dash.ids.promedio_tiempo_actividades.text = str(round(int(dash.minutes_items_mdlist) /
int(dash.number_items_mdlist)))
else:
dash.ids.promedio_tiempo_actividades.text = '0'
del dash.duracion_actividades_list[0] # Should replace '0' with 'index'
self.show_toast()
def show_toast(self):
toast("Actividad eliminada del cronograma")
# DASHBOARD ################################
class DashboardWindow(Screen):
number_items_mdlist = 0
minutes_items_mdlist = 0
duracion_actividades_list = []
def on_pre_enter(self, *args):
Window.size = (Window.width + 1, Window.height + 1)
Window.size = (Window.width - 1, Window.height - 1)
# ACTIVITIES WINDOW ################################
class IngActivWindow(Screen):
menu = None
def dropdown_activity(self):
# Create the drop down menu
actividades = ["Correo electrónico", "Hora Regreso a Oficina", "Hora Salida de Oficina",
"Llamada de cortesia", "Llamada de Presentación", "Llamada de Promoción",
"Seguimiento a Cotización", "Traslado", "Visita a Cliente", "Whatsapp"]
menu_items = [{"text": f"{actividad}"} for actividad in actividades]
self.menu = MDDropdownMenu(
caller=self.ids.dropdown_Actividades,
items=menu_items,
width_mult=5,
)
self.menu.open()
self.menu.bind(on_release=self.set_item)
def set_item(self, instance_menu, instance_menu_item):
def set_item(interval):
self.ids.dropdown_Actividades.text = instance_menu_item.text
instance_menu.dismiss()
Clock.schedule_once(set_item, 0.5)
def format_hour(self):
if len(self.ids.hour_field.text) > 2:
self.ids.hour_field.text = self.ids.hour_field.text[:-1]
if self.ids.hour_field.text != '' and int(self.ids.hour_field.text) > 12:
self.ids.hour_field.text = self.ids.hour_field.text[:-1]
self.ids.hora_final.text = self.ids.hour_field.text + ':00 ____'
def format_minute(self):
if len(self.ids.minute_field.text) > 2:
self.ids.minute_field.text = self.ids.minute_field.text[:-1]
if self.ids.minute_field.text != '' and int(self.ids.minute_field.text) > 59:
self.ids.minute_field.text = self.ids.minute_field.text[:-1]
self.ids.hora_final.text = self.ids.hour_field.text + ':' + self.ids.minute_field.text + ' ____'
def format_am_pm(self):
if self.ids.toggle_am.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text[:-5] + ' a.m.'
elif self.ids.toggle_pm.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text[:-5] + ' p.m.'
def calculate_final_time(self):
if self.ids.hour_field != '' and self.ids.minute_field != '' and self.ids.duracion.text != '':
add_minutes = str(int(self.ids.minute_field.text) + int(self.ids.duracion.text))
# Check if added minutes does not surpass 60
# < 60 --> just add minute_field and duracion
if int(add_minutes) < 60:
self.ids.hora_final.text = self.ids.hour_field.text + ':' + add_minutes
# Add a.m./p.m. to label depending on the toggle button selected
if self.ids.toggle_am.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text + ' a.m.'
elif self.ids.toggle_pm.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text + ' p.m.'
# if >= 60 -->
else:
hours_to_add = int(add_minutes) / 60
minutes_to_add = int(add_minutes) % 60
add_hours = int(self.ids.hour_field.text) + int(hours_to_add)
if len(str(minutes_to_add)) == 1:
minutes_to_add = '0' + str(minutes_to_add)
# Si la suma de las horas es mayor a 12, cambiar a formato de 12 horas
if int(add_hours) == 12:
if self.ids.toggle_am.state == 'down':
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add) + ' p.m.'
elif self.ids.toggle_pm.state == 'down':
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add) + ' a.m.'
elif int(add_hours) > 11:
if int(self.ids.hour_field.text) == 12:
if self.ids.toggle_am.state == 'down':
add_hours -= 12
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add) + ' a.m.'
elif self.ids.toggle_pm.state == 'down':
add_hours -= 12
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add) + ' p.m.'
else:
if self.ids.toggle_am.state == 'down':
add_hours -= 12
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add) + ' p.m.'
elif self.ids.toggle_pm.state == 'down':
add_hours -= 12
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add) + ' a.m.'
else:
self.ids.hora_final.text = str(add_hours) + ':' + str(minutes_to_add)
# Add a.m./p.m. to label depending on the toggle button selected
if self.ids.toggle_am.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text + ' a.m.'
elif self.ids.toggle_pm.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text + ' p.m.'
if self.ids.duracion.text == '' or self.ids.duracion.text == 0:
self.ids.hora_final.text = str(self.ids.hour_field.text) + ':' + str(self.ids.minute_field.text)
if self.ids.toggle_am.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text + ' a.m.'
elif self.ids.toggle_pm.state == 'down':
self.ids.hora_final.text = self.ids.hora_final.text + ' p.m.'
def complete_registration(self):
dash = MDApp.get_running_app().root.get_screen('dash')
activity = MDApp.get_running_app().root.get_screen('ingActiv')
if activity.ids.toggle_am.state == 'down':
dash.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"{activity.ids.dropdown_Actividades.text}",
secondary_text=f"{activity.ids.hour_field.text}:{activity.ids.minute_field.text} a.m."
f" - {activity.ids.hora_final.text}"))
elif activity.ids.toggle_pm.state == 'down':
dash.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"{activity.ids.dropdown_Actividades.text}",
secondary_text=f"{activity.ids.hour_field.text}:{activity.ids.minute_field.text} p.m."
f" - {activity.ids.hora_final.text}"))
dash.number_items_mdlist += 1
dash.minutes_items_mdlist += int(activity.ids.duracion.text)
dash.duracion_actividades_list.append(activity.ids.duracion.text)
dash.ids.numero_actividades_dash.text = str(dash.number_items_mdlist)
dash.ids.promedio_tiempo_actividades.text = str(round(int(dash.minutes_items_mdlist) /
int(dash.number_items_mdlist)))
self.show_toast_activities()
def show_toast_activities(self):
toast("Actividad registrada con éxito")
# WINDOW MANAGER ################################
class WindowManager(ScreenManager):
pass
# MAIN CLASS ################################
class ReproducibleExample(MDApp):
enie = 'ñ'
acento_A = 'Á'
acento_a = 'á'
acento_E = 'É'
acento_e = 'é'
acento_I = 'Í'
acento_i = 'í'
acento_O = 'Ó'
acento_o = 'ó'
acento_U = 'Ú'
acento_u = 'ú'
interrog_inic = '¿'
def build(self):
self.theme_cls.primary_palette = "Teal"
return WindowManager()
if __name__ == "__main__":
ReproducibleExample().run()
<WindowManager>:
id: screen_manager
DashboardWindow:
id: dash
name:'dash'
IngActivWindow:
id: ingActiv
name: 'ingActiv'
<DashboardWindow>:
name: "dash"
BoxLayout:
orientation: 'vertical'
MDCard:
size_hint: (0.75, 0.8)
pos_hint: {'center_x': 0.5, 'center_y': 0.44}
orientation: 'vertical'
padding: '15dp'
spacing: '10dp'
md_bg_color: [1, 1, 1, 0.75]
radius: [16, ]
MDRaisedButton:
text: 'Next Page'
on_release:
root.manager.current = 'ingActiv'
MDLabel:
text: 'Datos de Actividades y Cronograma'
font_style: 'H5'
valign: 'middle'
size_hint: 1, 0.05
MDBoxLayout:
orientation: 'horizontal'
padding: "10dp", 0, "10dp", "10dp"
spacing: "10dp"
size_hint: 1, 0.30
MDCard:
size_hint: 0.9, 0.9
orientation: 'vertical'
padding: '15dp'
spacing: '15dp'
md_bg_color: [0.811, 0, 0.058, 0.7]
radius: [16, ]
MDLabel:
id: promedio_tiempo_actividades
text: "0"
theme_text_color: "Custom"
text_color: 1, 1, 1, 1
font_style: 'H1'
halign: 'center'
font_size: (root.width**2 + root.height**2) / 11**4
MDLabel:
text: "Tiempo promedio de actividades"
theme_text_color: "Custom"
text_color: 1, 1, 1, 1
font_style: 'Subtitle2'
halign: 'center'
MDCard:
size_hint: 0.9, 0.9
orientation: 'vertical'
padding: '15dp'
spacing: '15dp'
md_bg_color: [0.121, .227, 0.576, 0.7]
radius: [16, ]
MDLabel:
id: numero_actividades_dash
text: "0"
theme_text_color: "Custom"
text_color: 1, 1, 1, 1
font_style: 'H1'
halign: 'center'
font_size: (root.width**2 + root.height**2) / 11**4
MDLabel:
text: 'N' + app.acento_u + 'mero de actividades realizadas'
theme_text_color: "Custom"
text_color: 1, 1, 1, 1
font_style: 'Subtitle2'
halign: 'center'
MDBoxLayout:
orientation: 'horizontal'
padding: "10dp", 0, "10dp", "10dp"
spacing: "10dp"
size_hint: 1, 0.65
MDCard:
orientation: 'vertical'
padding: '15dp'
spacing: '10dp'
md_bg_color: [0.419, .725, 0.941, 0.7]
radius: [16, ]
MDBoxLayout:
orientation: 'horizontal'
size_hint_y: 0.15
MDLabel:
text: "Cronograma del dia con Hora de Inicio y Final, Cliente, Actividad, y Resultado"
theme_text_color: "Custom"
text_color: 1, 1, 1, 1
font_style: 'Subtitle2'
halign: 'center'
TooltipMDIconButton:
icon: 'plus'
tooltip_text: 'Agregar actividad'
pos_hint: {"center_x": 0.5, "center_y": 0.5}
font_color: 0,0,0,1
on_press:
root.manager.current = 'ingActiv'
root.manager.transition.direction = 'left'
MDBoxLayout:
orientation: "vertical"
spacing: "10dp"
size_hint_y: 0.85
ScrollView:
scroll_timeout: 100
MDList:
id: md_list
padding: 0
### EXTRAS: SWIPE AND DELETE ITEM ####################
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
MDCardSwipeLayerBox:
padding: "8dp"
MDIconButton:
icon: "trash-can"
pos_hint: {"center_y": .5}
on_release: root.remove_item(root)
MDCardSwipeFrontBox:
TwoLineListItem:
id: content
text: root.text
secondary_text: root.secondary_text
_no_ripple_effect: True
max_opened_x: "50dp"
<IngActivWindow>:
##################### ACTIVIDADES REALIZADAS ############################################################
<IngActivWindow>:
name: 'ingActiv'
FloatLayout:
cols:1
MDCard:
size_hint: 0.80,0.66
pos_hint: {"center_x": 0.5, "center_y": 0.45}
radius: [36, ]
padding: '10dp'
md_bg_color: [1, 1, 1, 0.85]
ScrollView:
MDGridLayout:
id: widget_container
cols:1
size_hint_y: None
height: self.minimum_height
padding: '15dp', '15dp', '15dp', '15dp'
spacing: '20dp'
adaptive_height: True
MDRaisedButton:
text: 'Next Page'
on_release:
root.manager.current = 'dash'
MDLabel:
id: tiempoActiv
text: "Hora y Tipo de Actividad"
pos_hint: {"center_x":0.5, "center_y": 0.5}
bold: 'True'
font_style: 'Button'
font_size: '18sp'
MDBoxLayout:
orientation: 'horizontal'
padding: "15dp", "10dp", "15dp", "5dp"
spacing: "10dp"
adaptive_height: True
size_hint: 1, None
MDTextField:
id: hour_field
hint_text: 'Hora'
helper_text: 'Max: 12'
helper_text_mode: 'on_focus'
input_filter: 'int'
write_tab: False
pos_hint: {"center_x":0.5, "center_y": 0.5}
size_hint_x: 0.2
on_text: root.format_hour()
MDTextField:
id: minute_field
hint_text: 'Minuto'
helper_text: 'Max: 59'
helper_text_mode: 'on_focus'
input_filter: 'int'
write_tab: False
pos_hint: {"center_x":0.5, "center_y": 0.5}
size_hint_x: 0.2
on_text: root.format_minute()
MyToggleButton:
id: toggle_am
text: "A.M."
group: "hora"
pos_hint: {"center_x":0.5, "center_y": 0.5}
on_press: root.format_am_pm()
MyToggleButton:
id: toggle_pm
text: "P.M."
group: "hora"
pos_hint: {"center_x":0.5, "center_y": 0.5}
on_press: root.format_am_pm()
# DURACIÓN DE ACTIVIDAD
MDBoxLayout:
orientation: 'horizontal'
padding: "15dp", "5dp", "15dp", "15dp"
spacing: "15dp"
adaptive_height: True
size_hint: 1, None
MDTextField:
pos_hint: {"x":0, "center_y": 0.5}
id: duracion
hint_text: 'Duraci' + app.acento_o + 'n de actividad'
helper_text: 'Duracion en minutos'
helper_text_mode: 'on_focus'
write_tab: False
input_filter: 'int'
size_hint_x: 0.45
on_text: root.calculate_final_time()
MDBoxLayout:
orientation: 'horizontal'
size_hint_x: 0.45
spacing: '15dp'
MDLabel:
text: 'Hora de termino:'
font_size: '12sp'
theme_text_color: "Custom"
text_color: 0, 0, 0, 0.50
halign: 'right'
MDLabel:
id: hora_final
text: ''
font_size: '16sp'
theme_text_color: "Custom"
text_color: 0, 0, 0, 0.50
# TIPO DE ACTIVIDAD
MDBoxLayout:
orientation: 'horizontal'
padding: "15dp", "5dp", "15dp", "5dp"
spacing: "5dp"
adaptive_height: True
size_hint: 1, None
MDTextField:
id: dropdown_Actividades
write_tab: False
size_hint: 1, None
pos_hint: {"x": 0, "center_y": 0.5}
icon_right: 'arrow-down-drop-circle-outline'
hint_text: 'Seleccionar Tipo de Actividad'
write_tab: False
valign: 'bottom'
enabled: False
on_focus: if self.focus: root.dropdown_activity()
MDSeparator:
height: "2dp"
MDRaisedButton:
text: "Registrar Actividad"
size_hint: None, None
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
font_size: '19sp'
on_release:
root.complete_registration()
从kivymd.app导入MDApp
从kivy.uix.screenmanager导入screenmanager，屏幕
从kivymd.toast导入toast
从kivymd.uix.menu导入MDDropdownMenu
从kivy.clock导入时钟
从kivy.config导入配置
从kivy.core.window导入窗口
来自kivy.utils导入平台
从kivy.properties导入StringProperty
从kivymd.uix.card导入MDCardSwipe
从kivymd.uix.button导入MDIconButton、MDTooltip
从kivymd.uix.behaviors.toggle\u行为导入MDToggleButton
从kivymd.uix.button导入MDRectangleFlatButton
如果平台不在（'android'，'ios'）：
Config.set（'图形'，'可调整大小'，'0'）
Window.size=（600700）
类工具IPMDiconButton（MDIconButton，MDTooltip）：
通过
类MyToggleButton（MDRectangleFlatButton，MDToggleButton）：
定义初始（自我，**kwargs）：
超级（）
self.background\u down=self.theme\u cls.primary\u light
类别SwipeToDeleteItem（MDCardSwipe）：
text=StringProperty（）
次要_text=StringProperty（）
def删除_项（自身、实例）：
dash=MDApp.get_running_app（）.root.get_screen（'dash'））
dash.ids.md_list.remove_小部件（实例）
如果dash.number\u items\u mdlist>0：
破折号\u项目\u mdlist-=1
dash.ids.numero\u actividades\u dash.text=str（dash.number\u items\u mdlist）
#修改索引以匹配MDLIST索引
index=instance.id
dash.minutes_items_mdlist-=int（dash.duracion_actividades_list[0]）#应将“0”替换为“index”
如果int（破折号项目列表）！=0：
dash.ids.promedio\u tiempo\u actividades.text=str（整数（dash.minutes\u items\u mdlist）/
int（破折号\项目\列表）））
其他：
dash.ids.promedio\u tiempo\u actividades.text='0'
del dash.duracion_actividades_列表[0]#应将“0”替换为“index”
self.show_toast（）
def show_吐司（自我）：
toast（“Actividad eliminada del cronograma”）
#仪表板################################
类仪表板窗口（屏幕）：
数量\u项目\u mdlist=0
分钟\u项目\u mdlist=0
duracion_活动列表=[]
def on_pre_enter（自身，*参数）：
Window.size=（Window.width+1，Window.height+1）
Window.size=（Window.width-1，Window.height-1）
#活动窗口################################
类窗口（屏幕）：
菜单=无
def下拉菜单_活动（自）：
#创建下拉菜单
活动=[“电力公司”、“奥菲西纳的悔恨”、“奥菲西纳的萨利达”，
“cortesia广场”、“Presentación广场”、“Promoción广场”，
“Seguimiento a Cotización”、“Traslado”、“拜访客户”、“Whatsapp”]
菜单项=[{“文本”：f“{actividad}”用于actividades中的actividad]
self.menu=MDDropdownMenu(
调用者=self.ids.dropdown\u Actividades，
项目=菜单项，
宽度=5，
)
self.menu.open（）
self.menu.bind（on_release=self.set_项）
def设置菜单项（自身、实例菜单、实例菜单项）：
def set_项目（间隔）：
self.ids.dropdown\u Actividades.text=实例\u菜单\u item.text
实例_menu.disclose（）
时钟。计划一次（设置项，0.5）
def格式_小时（自身）：
如果len（self.ids.hour_field.text）>2：
self.ids.hour_field.text=self.ids.hour_field.text[：-1]
如果self.ids.hour\u field.text！=''和int（self.ids.hour\u field.text）>12：
self.ids.hour_field.text=self.ids.hour_field.text[：-1]
self.ids.hora_final.text=self.ids.hour_field.text+'：00
def格式_分钟（自身）：
如果len（self.id.minute\u field.text）>2：
self.ids.minute_field.text=self.ids.minute_field.text[：-1]
如果self.ids.minute\u field.text！=''和int（self.ids.minute\u field.text）>59：
self.ids.minute_field.text=self.ids.minute_field.text[：-1]
self.ids.hora_final.text=self.ids.hour_field.text+'：'+self.ids.minute_field.text+''
def格式上午下午（自我）：
如果self.ids.toggle_am.state==“向下”：
self.ids.hora_final.text=self.ids.hora_final.text[：-5]+“上午”
elif self.ids.toggle_pm.state==“向下”：
self.ids.hora_final.text=self.ids.hora_final.text[：-5]+“p.m.”
def计算最终时间（自我）：
如果self.ids.hour_字段！=''和self.ids.minute_字段！=''和self.ids.duracion.text！=''：
add_minutes=str（int（self.ids.minute_field.text）+int（self.ids.duracion.text））
#检查增加的分钟数是否不超过60分钟
#<60-->只需添加分钟字段和持续时间
如果
index = dash.number_items_mdlist - 1 - dash.ids.md_list.children.index(instance)