我无法找到有关每个元素的事件处理程序的信息（如Label，Button，TabbedPanel等）
我在TabbedPanel中显示第一个标签时出现问题。
当程序启动时，它会显示第一个选项卡“tab_def”并且它是空的。 但我希望看到通过SHOW_DEF（）的文本。 如果我单击另一个选项卡，然后单击第一个选项卡 - 我得到我想要的。
我该如何解决？ 提前谢谢。
.kv代码
<GeneralForm>:
do_default_tab: False
txt1:txt1
txt2:txt2
txt3:txt3
txt_def:txt_def
tab1:tab1
tab_def:tab_def
TabbedPanelItem:
id:tab_def
text: 'Today'
on_release:root.SHOW_DEF()
BoxLayout:
ScrollView:
Label:
id:txt_def
text:'' <=== !!!!
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
TabbedPanelItem:
id:tab1
text: 'Mon'
on_release: root.SHOW_CONTENT(tab1.text,'txt1')
BoxLayout:
orientation: 'vertical'
BoxLayout:
ScrollView:
Label:
id:txt1
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
Button:
text: 'Edit'
on_press: root.EDIT(tab1.text)
Button:
text: 'Exit'
on_press: root.EXIT()
.py代码
class GeneralForm(TabbedPanel):
shutil.copy('data','data_backup')
txt1 = ObjectProperty()
txt2 = ObjectProperty()
txt_def = ObjectProperty()
def SHOW_DEF(self):
now_date = datetime.date.today()
TIME=now_date.weekday()
if TIME==0:
DDAY='Mon'
elif TIME==1:
DDAY='Tue'
elif TIME==2:
DDAY='Wed'
elif TIME==3:
DDAY='Thu'
elif TIME==4:
DDAY='Fri'
elif TIME==5:
DDAY='Sat'
elif TIME==6:
DDAY='Sun'
DATA=GeneralForm.PARSE(self,DDAY)
DATA=DATA.split('|||')
DATA='\n'.join(DATA)
self.txt_def.text=DATA <======= !!!
.py文件的完整代码：
import shutil, datetime
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import ObjectProperty
from kivy.uix.tabbedpanel import TabbedPanel
from kivy.uix.label import Label
from kivy.uix.popup import Popup
from kivy.uix.button import Button
from kivy.uix.scrollview import ScrollView
from kivy.uix.textinput import TextInput
###############################################################################
class GeneralForm(TabbedPanel):
shutil.copy('data','data_backup')
txt1 = ObjectProperty()
txt2 = ObjectProperty()
txt3 = ObjectProperty()
txt4 = ObjectProperty()
txt5 = ObjectProperty()
txt6 = ObjectProperty()
txt7 = ObjectProperty()
txt_def = ObjectProperty()
def SHOW_DEF(self):
now_date = datetime.date.today()
TIME=now_date.weekday()
if TIME==0:
DDAY='Mon'
elif TIME==1:
DDAY='Tue'
elif TIME==2:
DDAY='Wed'
elif TIME==3:
DDAY='Thu'
elif TIME==4:
DDAY='Fri'
elif TIME==5:
DDAY='Sat'
elif TIME==6:
DDAY='Sun'
DATA=GeneralForm.PARSE(self,DDAY)
DATA=DATA.split('|||')
DATA='\n'.join(DATA)
#box1=ScrollView()
#l1=Label(text=DATA,text_size=(self.width,None),halign='center',size_hint_y=None)
#box1.add_widget(l1)
#return box1
self.txt_def.text=DATA
def SHOW_CONTENT(self,D,TXT):
DATA=GeneralForm.PARSE(self,D)
DATA=DATA.split('|||')
DATA='\n'.join(DATA)
if TXT=='txt1':
self.txt1.text=DATA
elif TXT=='txt2':
self.txt2.text=DATA
elif TXT=='txt3':
self.txt3.text=DATA
elif TXT=='txt4':
self.txt4.text=DATA
elif TXT=='txt5':
self.txt5.text=DATA
elif TXT=='txt6':
self.txt6.text=DATA
elif TXT=='txt7':
self.txt7.text=DATA
def PARSE(self,D):
FILE=open('data')
RAW=FILE.read()
for i in RAW.split('====='):
i=i.strip()
if D in i:
DATA=i.splitlines()
DATA.remove(D)
DATA='\n'.join(DATA)
return(DATA)
def EDIT(self,D):
DATA=GeneralForm.PARSE(self,D)
DATA=DATA.split('|||')
DATA='\n'.join(DATA)
box1=BoxLayout(size_hint_y=6)
t1=TextInput(text=DATA)
box1.add_widget(t1)
box2=BoxLayout(size_hint_y=1)
b2=Button(text='Save')
b3=Button(text='Cancel')
box2.add_widget(b2)
box2.add_widget(b3)
box3=BoxLayout(orientation='vertical')
box3.add_widget(box1)
box3.add_widget(box2)
popup = Popup(content=box3,auto_dismiss=False,size_hint=(.75,.75),title='Edit')
b2.bind(on_press=lambda instance: self.SAVE_EDIT(instance, TXT=t1.text, DAY=D))
b3.bind(on_press=popup.dismiss)
popup.open()
def SAVE_EDIT(self,instance,TXT,DAY):
TXT=TXT.strip()
if TXT=='':
pass
else:
TXT=TXT.split('\n')
TXT='|||'.join(TXT)
TMP_FILE=open('temp','w')
DATA=GeneralForm.PARSE(self,DAY)
for line in open('data'):
line=line.replace(DATA,TXT)
TMP_FILE.write(line)
TMP_FILE.close()
shutil.move('temp','data')
def EXIT(self):
App.get_running_app().stop()
class TimeTable(App):
def build(self):
return GeneralForm()
if __name__ == '__main__':
TimeTable().run()
.kv文件的完整代码：
<GeneralForm>:
do_default_tab: False
#default_tab_text: 'Today'
#default_tab_content: root.SHOW_DEF()
txt1:txt1
txt2:txt2
txt3:txt3
txt4:txt4
txt5:txt5
txt6:txt6
txt7:txt7
txt_def:txt_def
tab1:tab1
tab_def:tab_def
TabbedPanelItem:
id:tab_def
text: 'Today'
on_release:root.SHOW_DEF()
BoxLayout:
ScrollView:
Label:
id:txt_def
text:''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
TabbedPanelItem:
id:tab1
text: 'Mon'
on_release: root.SHOW_CONTENT(tab1.text,'txt1')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt1
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab1.text)
Button:
text: 'Exit'
on_press: root.EXIT()
TabbedPanelItem:
id:tab2
text: 'Tue'
on_release: root.SHOW_CONTENT(tab2.text,'txt2')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt2
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab2.text)
Button:
text: 'Exit'
on_press: root.EXIT()
TabbedPanelItem:
id:tab3
text: 'Wed'
on_release: root.SHOW_CONTENT(tab3.text,'txt3')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt3
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab3.text)
Button:
text: 'Exit'
on_press: root.EXIT()
TabbedPanelItem:
id:tab4
text: 'Thu'
on_release: root.SHOW_CONTENT(tab4.text,'txt4')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt4
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab4.text)
Button:
text: 'Exit'
on_press: root.EXIT()
TabbedPanelItem:
id:tab5
text: 'Fri'
on_release: root.SHOW_CONTENT(tab5.text,'txt5')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt5
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab5.text)
Button:
text: 'Exit'
on_press: root.EXIT()
TabbedPanelItem:
id:tab6
text: 'Sat'
on_release: root.SHOW_CONTENT(tab6.text,'txt6')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt6
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab6.text)
Button:
text: 'Exit'
on_press: root.EXIT()
TabbedPanelItem:
id:tab7
text: 'Sun'
on_release: root.SHOW_CONTENT(tab7.text,'txt7')
BoxLayout:
orientation: 'vertical'
BoxLayout:
size_hint_y:6
ScrollView:
Label:
id:txt7
text: ''
text_size: self.width, None
height: self.texture_size[1]
size_hint_y: None
halign: 'center'
BoxLayout:
size_hint_y:1
Button:
text: 'Edit'
on_press: root.EDIT(tab7.text)
Button:
text: 'Exit'
“数据”文件：
=====
Mon
1.00 - go
=====
Tue
19.00 - go
=====
Wed
20.00 - go
=====
Thu
21.00 - go
=====
Fri
22.00 - go
=====
Sat
24.00 - go
=====
Sun
25.00 - go
=====
答案 0 :(得分：0)
您是否曾尝试在类构造函数中调用SHOW_DEF（）？
@EDIT：试试这个
class GeneralForm(TabbedPanel):
def __init__(self, **kwargs):
super(GeneralForm, self).__init__(**kwargs)
shutil.copy('data','data_backup')
txt1 = ObjectProperty()
txt2 = ObjectProperty()
txt_def = ObjectProperty()
self.SHOW_DEF()
def SHOW_DEF(self):
now_date = datetime.date.today()
TIME=now_date.weekday()
if TIME==0:
DDAY='Mon'
elif TIME==1:
DDAY='Tue'
elif TIME==2:
DDAY='Wed'
elif TIME==3:
DDAY='Thu'
elif TIME==4:
DDAY='Fri'
elif TIME==5:
DDAY='Sat'
elif TIME==6:
DDAY='Sun'
DATA=GeneralForm.PARSE(self,DDAY)
DATA=DATA.split('|||')
DATA='\n'.join(DATA)
self.txt_def.text=DATA
我在这里做的是添加了一个构造函数，它告诉您的对象创建后要做什么。你不应该像你一样在类中的指定函数或构造函数之外做任何事情，所以我也将你的变量移动到构造函数并在最后调用SHOW_DEF（）。