RecycleView доставляет мне некоторые проблемы, особенно при изменении столбцов на определенный размер. Я закодировал предполагаемую ширину столбца с GridLayout выше RecycleView. Я также сделал странный способ выделить целую строку, когда одна ячейка выделена с помощью модуля. Я не уверен, что это лучший способ, но мне бы хотелось, чтобы другие высказались об этом методе.
В конечном итоге я захочу удалить всю строку, а затем выбранные данные в файле JSON. Но сейчас я просто хочу ширину подходящего размера.
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.label import Label
from kivy.properties import BooleanProperty
from kivy.uix.behaviors import FocusBehavior
from kivy.storage.jsonstore import JsonStore
from kivy.uix.recyclegridlayout import RecycleGridLayout
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
kv_string = """
ScreenManager:
id: manager
Screen:
BoxLayout:
orientation: 'vertical'
canvas:
Color:
rgba: .2,.2,.5,1
Rectangle:
pos: self.pos
size: self.size
GridLayout:
size_hint_y: .3
cols:4
MyButton:
text: 'Num'
size_hint_x: 0.5
MyButton:
text: 'Ratings'
MyButton:
text: 'Name'
size_hint_x: 2
MyButton:
text: 'Score'
on_press:
#arrange the boxing in ascending or descending order
RecycleView:
data: [{'text': str(x)} for x in app.data]
viewclass: 'SelectableLabel'
SelectableRecycleGridLayout:
cols: 4
#default_size: None, dp(26)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: True
touch_multiselect: True
ToggleButton:
id: toggle_button
size_hint_y: .3
text: 'Delete Selected'
state: 'normal'
on_press:
app.data = [0]
<SelectableLabel>:
canvas.before:
Color:
rgba: (.0, 0.9, .1, .3) if self.selected else (0, 0, 0, 1)
Rectangle:
pos: self.pos
size: self.size
<MyButton@Button>:
background_color: 0,0,0,1
"""
class SelectableLabel(RecycleDataViewBehavior, Label):
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
def refresh_view_attrs(self, rv, index, data):
self.index = index
return super(SelectableLabel, self).refresh_view_attrs(
rv, index, data)
def on_touch_down(self, touch):
if super(SelectableLabel, self).on_touch_down(touch):
return True
# *** This selects the whole row *** # Not sure if this is the best way.
if self.collide_point(*touch.pos) and self.selectable:
self.parent.select_with_touch(self.index, touch)
if self.index % 4 == 0:
self.parent.select_with_touch(self.index + 1)
self.parent.select_with_touch(self.index + 2)
self.parent.select_with_touch(self.index + 3)
return
elif self.index % 4 == 1:
self.parent.select_with_touch(self.index + 1)
self.parent.select_with_touch(self.index + 2)
self.parent.select_with_touch(self.index -1)
return
elif self.index % 4 == 2:
self.parent.select_with_touch(self.index + 1)
self.parent.select_with_touch(self.index - 2)
self.parent.select_with_touch(self.index -1)
return
elif self.index % 4 == 3:
self.parent.select_with_touch(self.index - 1)
self.parent.select_with_touch(self.index - 2)
self.parent.select_with_touch(self.index - 3)
return
def apply_selection(self, rv, index, is_selected):
self.selected = is_selected
if App.get_running_app().root.ids.toggle_button.state == 'down':
print('Deleted', index) #Still need to add delete function
rv.layout_manager.clear_selection() #Not working
self.remove_widget(index) #Also not working
class SelectableRecycleGridLayout(FocusBehavior, LayoutSelectionBehavior, RecycleGridLayout):
pass
class MyApp(App):
data = [] #ListProperty?
store = JsonStore('file.json')
store.put('Example: 1', value_1 = 'Rating: C', value_2 = 'Score: 10', value_3 = 'Name: Zack')
store.put('Example: 2', value_1 = 'Rating: A', value_2 = 'Score: 32', value_3 = 'Name: Pete')
store.put('Example: 3', value_1 = 'Rating: B', value_2 = 'Score: 24', value_3 = 'Name: Toby')
store.put('Example: 4', value_1 = 'Rating: D', value_2 = 'Score: 03', value_3 = 'Name: Lars')
x = 0
for rows in store.keys():
x += 1
data.append(x)
for row in store.get(rows):
data.append(store.get(rows)[row])
print(data) #shows successfully appended
def build(self):
root_widget = Builder.load_string(kv_string)
return root_widget
if __name__ == "__main__":
MyApp().run()