我正在尝试创建一个简单的考勤应用程序。在
当程序启动时,所有标签都在取消选择的列表中
预期行为:当选中任何标签时,数据移动到所选列表,而现在所选标签位于连接列表的末尾。然后RecycleView刷新以显示此更改。在
所以我设法使数据从一个列表移动到另一个列表,但是我不能使RecycleView刷新
我试着用身份证,但失败了
我希望有人能帮助我。我认为这对于知识渊博的人来说是一个常规问题,但对于像我这样的傻瓜来说,却不是。在
我是第一次在这个网站上提问,所以很抱歉
代码如下:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.label import Label
from kivy.properties import BooleanProperty
from kivy.properties import ListProperty
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from datetime import datetime
import kivy
from kivy.config import Config
Config.set('graphics', 'width', '300')
Config.set('graphics', 'height', '500')
importedlist = ['Novella Varela', 'Caroll Faircloth', 'Douglas Schissler',
'Rolande Hassell', 'Hayley Rivero', 'Niesha Dungy', 'Winfred Dejonge', 'Venetta Milum']
deselected_list = importedlist[:]
selected_list = []
class SelectableRecycleBoxLayout(FocusBehavior, LayoutSelectionBehavior,
RecycleBoxLayout):
''' Adds selection and focus behaviour to the view. '''
class SelectableLabel(RecycleDataViewBehavior, Label):
''' Add selection support to the Label '''
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
def refresh_view_attrs(self, rv, index, data):
''' Catch and handle the view changes '''
self.index = index
return super(SelectableLabel, self).refresh_view_attrs(
rv, index, data)
def on_touch_down(self, touch):
''' Add selection on touch down '''
if super(SelectableLabel, self).on_touch_down(touch):
return True
if self.collide_point(*touch.pos) and self.selectable:
return self.parent.select_with_touch(self.index, touch)
def apply_selection(self, rv, index, is_selected):
''' Respond to the selection of items in the view.
and add/remove items from lists
'''
self.selected = is_selected
if self.selected and self.text in deselected_list:
selected_list.append(self.text)
deselected_list.remove(self.text)
print(selected_list)
elif not self.selected and self.text in selected_list:
deselected_list.append(self.text)
selected_list.remove(self.text)
print(deselected_list)
class RV(RecycleView):
# this needs to be updated every time any label is selected or deselected
def __init__(self, **kwargs):
super(RV, self).__init__(**kwargs)
self.data = ([{'text': str(row)} for row in sorted(deselected_list)]
+ [{'text': str(row)} for row in sorted(selected_list)])
class Screen(BoxLayout):
now = datetime.now()
def nowdate(self):
return self.now.strftime('%d')
def nowmonth(self):
return self.now.strftime('%m')
def nowyear(self):
return self.now.strftime('%y')
def nowhour(self):
return self.now.strftime('%H')
def nowminute(self):
return self.now.strftime('%M')
Builder.load_string('''
#:import datetime datetime
<Screen>:
orientation: 'vertical'
BoxLayout:
size_hint_y: None
height: 30
TextInput:
id: date
text: root.nowdate()
TextInput:
id: date
text: root.nowmonth()
TextInput:
id: date
text: root.nowyear()
TextInput:
id: date
text: root.nowhour()
TextInput:
id: date
text: root.nowminute()
Button:
RV:
viewclass: 'SelectableLabel'
SelectableRecycleBoxLayout:
default_size: None, dp(45)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: True
touch_multiselect: True
Button:
size_hint_y: None
height: 30
<SelectableLabel>:
# Draw a background to indicate selection
canvas.before:
Color:
rgba: (.0, 0.9, .1, .3) if self.selected else (0, 0, 0, 1)
Rectangle:
pos: self.pos
size: self.size
''')
class TestApp(App):
def build(self):
return Screen()
if __name__ == '__main__':
TestApp().run()
好吧,所以我确实有几次在尝试解决这个问题时绊倒了,但我想我已经做到了。我所做的是创建两个回收视图和一个可以访问ButtonBehaviors的CustomLabel,这样您就可以使用“on_press”而不是“on峎u touch_down”(它在整个树中传播,而不是通过交互元素传播)。在
Example Video
py文件:
kv文件:
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