hari prasad
Reputation: 35
Update the recycle view list after selection in Kivy
My target is like
I am choosing an option from the recycle view list from button 1, after choosing the option, then I am choosing from button 2,now the display must not show the choosed value in button 1(previously choosed option must be removed from recycle view 2). More over the button text must be updated to the choosed value text.
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.screenmanager import ScreenManager,Screen,SlideTransition,FadeTransition
from kivy.uix.checkbox import CheckBox
from kivy.properties import ObjectProperty, NumericProperty, BooleanProperty,ListProperty,StringProperty
from kivy.uix.dropdown import DropDown
from kivy.uix.button import Button
from kivy.base import runTouchApp
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from kivy.uix.recycleview.views import RecycleDataViewBehavior
alph = ['a','b','c','d','e','f','g','h','i']
val1_chsd = None
val2_chsd = None
class Screen3(Screen):
#pass
labeltext = StringProperty('My selection')
def buttontype(self,types):
global buttonval
print("type called :",types)
if types is "button1":
buttonval = "selection1"
print ('value set 1',buttonval)
elif types is "button2":
buttonval = "selection2"
print ('value set 2',buttonval)
def setvalueselected(self,sel_value):
print("Selected value is",sel_value)
global val1_chsd
global val2_chsd
if buttonval is "selection1":
val1_chsd = sel_value
val1_name = sel_value
print("choosed no. 1",val1_name)
if buttonval is "selection2":
val2_chsd = sel_value
val2_name = sel_value
print("choosed no. 2",val2_name)
def printselected(self):
print("abcdef",val1_chsd,val2_chsd)
if val1_chsd != None and val2_chsd != None:
selected = val1_chsd + '\n' + val2_chsd
print ("choosed : ",selected)
self.labeltext = selected
else:
print ("Choose all values")
class Screen4(Screen):
list = ListProperty([])
class Screen5(Screen):
list = ListProperty([])
class ScreenManagement(ScreenManager):
pass
class SelectableRecycleBoxLayout(FocusBehavior, LayoutSelectionBehavior,
RecycleBoxLayout):
''' Adds selection and focus behaviour to the view. '''
class RVval1(RecycleView):
def __init__(self, **kwargs):
super(RVval1, self).__init__(**kwargs)
#print('removedval:', value2_chsd)
self.data = [{'text': str(x)} for x in alph]
class RVval2(RecycleView):
def __init__(self, **kwargs):
super(RVval2, self).__init__(**kwargs)
print('removedval:', val1_chsd)
self.data = [{'text': str(x)} for x in alph]
class SelectableLabel(RecycleDataViewBehavior, Label):
''' Add selection support to the Label '''
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
sc3 = Screen3()
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 Truej
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. '''
self.selected = is_selected
if is_selected:
print("selection changed to {0}".format(rv.data[index]))
valueselected = format(rv.data[index])
valueselected = valueselected.replace("{'text': '","")
valueselected = valueselected.replace("'}","")
print("valueselected : ",valueselected)
self.sc3.setvalueselected(valueselected)
else:
print("selection removed for {0}".format(rv.data[index]))
presentation = Builder.load_file('dfive2.kv')
class DfiveZApp(App):
def build(self):
return presentation
if __name__ == '__main__':
DfiveZApp().run()
Kivy file
#:import SlideTransition kivy.uix.screenmanager.SlideTransition
ScreenManagement:
id:screenmgr
Screen3:
id: screen_3
name : "screen3"
manager: screenmgr
Screen4:
id: rv_screen_val1
name : "screen4"
Screen5:
id: rv_screen_val2
name : "screen5"
<Screen3>:
BoxLayout:
orientation: "vertical"
BoxLayout:
orientation: "vertical"
#size_hint_y: 1
GridLayout:
cols: 2
size_hint_y: 2
Label:
text:"Value1"
Button:
id: val1_name
text: 'val1'
on_press:
root.buttontype('button1')
app.root.transition = SlideTransition(direction='left')
app.root.current = 'screen4'
Label:
text:"Value2"
Button:
id: val2_name
text: 'val2'
on_press:
root.buttontype('button2')
app.root.transition = SlideTransition(direction='left')
app.root.current = 'screen5'
BoxLayout:
Label:
text:root.labeltext
Button:
text: 'Submit'
on_press:
root.printselected()
#app.root.transition = SlideTransition(direction='left')
<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
<RVval1>:
viewclass: 'SelectableLabel'
SelectableRecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: False
touch_multiselect: False
<RVval2>:
viewclass: 'SelectableLabel'
SelectableRecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: False
touch_multiselect: False
<Screen4>:
BoxLayout:
list: rv_list_val1
orientation: "vertical"
RVval1:
id: rv_list_val1
Button:
text: 'Previous screen'
size_hint: None, None
size: 150, 50
#on_press: root.SetText()
on_release:
#root.manager.current = root.manager.previous()
app.root.transition = SlideTransition(direction='right')
app.root.current = 'screen3'
<Screen5>:
BoxLayout:
list: rv_list_val2
orientation: "vertical"
RVval2:
id: rv_list_val2
Button:
text: 'Previous screen'
size_hint: None, None
size: 150, 50
#on_press: root.SetText()
on_release:
#root.manager.current = root.manager.previous()
app.root.transition = SlideTransition(direction='right')
app.root.current = 'screen3'
Upvotes: 1
Views: 209
Answers (1)
tomasantunes
Reputation: 945
You can create a method to reload the data on the second step and set a string property on the view.
.py file
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.screenmanager import ScreenManager,Screen,SlideTransition,FadeTransition
from kivy.uix.checkbox import CheckBox
from kivy.properties import ObjectProperty, NumericProperty, BooleanProperty,ListProperty,StringProperty
from kivy.uix.dropdown import DropDown
from kivy.uix.button import Button
from kivy.base import runTouchApp
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from kivy.uix.recycleview.views import RecycleDataViewBehavior
alph = ['a','b','c','d','e','f','g','h','i']
sel_values1 = []
val1_chsd = None
val2_chsd = None
class Screen3(Screen):
#pass
labeltext = StringProperty('My selection')
val1 = StringProperty('val1')
val2 = StringProperty('val2')
def buttontype(self,types):
global buttonval
print("type called :",types)
if types is "button1":
buttonval = "selection1"
print ('value set 1',buttonval)
elif types is "button2":
buttonval = "selection2"
print ('value set 2',buttonval)
def setvalueselected(self,sel_value):
print("Selected value is",sel_value)
global val1_chsd
global val2_chsd
if buttonval is "selection1":
val1_chsd = sel_value
val1_name = sel_value
print("choosed no. 1",val1_name)
self.val1 = val1_name
if buttonval is "selection2":
val2_chsd = sel_value
val2_name = sel_value
print("choosed no. 2",val2_name)
self.val2 = val2_name
def printselected(self):
print("abcdef",val1_chsd,val2_chsd)
if val1_chsd != None and val2_chsd != None:
selected = val1_chsd + '\n' + val2_chsd
print ("choosed : ",selected)
self.labeltext = selected
else:
print ("Choose all values")
class Screen4(Screen):
list = ListProperty([])
class Screen5(Screen):
list = ListProperty([])
class ScreenManagement(ScreenManager):
pass
class SelectableRecycleBoxLayout(FocusBehavior, LayoutSelectionBehavior,
RecycleBoxLayout):
''' Adds selection and focus behaviour to the view. '''
class RVval1(RecycleView):
def __init__(self, **kwargs):
super(RVval1, self).__init__(**kwargs)
#print('removedval:', value2_chsd)
self.data = [{'text': str(x)} for x in alph]
class RVval2(RecycleView):
def __init__(self, **kwargs):
super(RVval2, self).__init__(**kwargs)
print('removedval:', val1_chsd)
self.data = [{'text': str(x)} for x in alph]
def reload_data(self):
self.data = [{'text': str(x)} for x in alph if x not in sel_values1]
class SelectableLabel(RecycleDataViewBehavior, Label):
''' Add selection support to the Label '''
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
sc3 = Screen3()
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 Truej
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. '''
self.selected = is_selected
if is_selected:
print("selection changed to {0}".format(rv.data[index]))
valueselected = format(rv.data[index])
valueselected = valueselected.replace("{'text': '","")
valueselected = valueselected.replace("'}","")
print("valueselected : ",valueselected)
print(hasattr(rv, "RVval1"))
if (rv.name == "RVval1"):
sel_values1.append(valueselected)
app = App.get_running_app()
app.root.ids['screen_3'].setvalueselected(valueselected)
app.root.ids['rv_screen_val2'].ids['rv_list_val2'].reload_data()
else:
print("selection removed for {0}".format(rv.data[index-1]))
presentation = Builder.load_file('dfive2.kv')
class DfiveZApp(App):
def build(self):
return presentation
if __name__ == '__main__':
DfiveZApp().run()
.kv file
#:import SlideTransition kivy.uix.screenmanager.SlideTransition
ScreenManagement:
id:screenmgr
Screen3:
id: screen_3
name : "screen3"
manager: screenmgr
Screen4:
id: rv_screen_val1
name : "screen4"
Screen5:
id: rv_screen_val2
name : "screen5"
<Screen3>:
BoxLayout:
orientation: "vertical"
BoxLayout:
orientation: "vertical"
#size_hint_y: 1
GridLayout:
cols: 2
size_hint_y: 2
Label:
text:"Value1"
Button:
id: val1_name
text: root.val1
on_press:
root.buttontype('button1')
app.root.transition = SlideTransition(direction='left')
app.root.current = 'screen4'
Label:
text:"Value2"
Button:
id: val2_name
text: root.val2
on_press:
root.buttontype('button2')
app.root.transition = SlideTransition(direction='left')
app.root.current = 'screen5'
BoxLayout:
Label:
text:root.labeltext
Button:
text: 'Submit'
on_press:
root.printselected()
#app.root.transition = SlideTransition(direction='left')
<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
<RVval1>:
viewclass: 'SelectableLabel'
SelectableRecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: False
touch_multiselect: False
<RVval2>:
viewclass: 'SelectableLabel'
SelectableRecycleBoxLayout:
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: False
touch_multiselect: False
<Screen4>:
BoxLayout:
list: rv_list_val1
orientation: "vertical"
RVval1:
id: rv_list_val1
name: 'RVval1'
Button:
text: 'Previous screen'
size_hint: None, None
size: 150, 50
#on_press: root.SetText()
on_release:
#root.manager.current = root.manager.previous()
app.root.transition = SlideTransition(direction='right')
app.root.current = 'screen3'
<Screen5>:
BoxLayout:
list: rv_list_val2
orientation: "vertical"
RVval2:
id: rv_list_val2
name: 'RVval2'
Button:
text: 'Previous screen'
size_hint: None, None
size: 150, 50
#on_press: root.SetText()
on_release:
#root.manager.current = root.manager.previous()
app.root.transition = SlideTransition(direction='right')
app.root.current = 'screen3'
Upvotes: 1
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