python - Kivy - formatting issues with a scrollview pane. -


i trying create following in kivy: https://imgur.com/a/rwdb6. each new recipe in screenshot want able add screen block. far have following code: 

from kivy.app import app kivy.uix.label import label kivy.lang import builder kivy.properties import listproperty kivy.uix.boxlayout import boxlayout kivy.uix.gridlayout import gridlayout kivy.uix.dropdown import dropdown kivy.uix.button import button kivy.uix.textinput import textinput kivy.uix.checkbox import checkbox   kivy.uix.screenmanager import screenmanager, screen, fadetransition kivy.properties import stringproperty  class shoppingscreen(screen):      def addrecipe(self):         self.ids.grid.add_widget(recipelabel(recipename = "test"))         self.ids.grid.add_widget(recipe())         self.ids.grid.add_widget(ingredient(ingredientname = "test", quantity="test"))      def activate_checkbox(self):         print("test")  class recipelabel(boxlayout):     recipename = stringproperty('')  class recipe(boxlayout):     ingredient = stringproperty('ingredient')     quantity = stringproperty('quantity')  class thescreenmanager(screenmanager):     pass  class ingredient(boxlayout):     ingredientname = stringproperty('')     quantity = stringproperty('')  root_widget = builder.load_string(''' #:import fadetransition kivy.uix.screenmanager.fadetransition #:import factory kivy.factory.factory  thescreenmanager:     shoppingscreen:  <shoppingscreen>:     name: 'shopping'     dropdown: dropdown.__self__     boxlayout:         orientation: 'vertical'         boxlayout:             orientation: 'horizontal'             size_hint: 1, .3             button:                 text: '<'                 size_hint: .1, 1                 font_size: 75                 background_normal: ""                 background_color: 0.18, .5, .92, 1                 on_release: app.root.current = 'main'               label:                 text: 'shopping list'                 halign: 'left'                 font_size: 50                 canvas.before:                     color:                         rgb: 0.18, .5, .92                     rectangle:                         pos: self.pos                         size: self.size             widget:                 size_hint: .1, 1                 canvas.before:                     color:                         rgb: 0.18, .5, .92                     rectangle:                         pos: self.pos                         size: self.size         boxlayout:             orientation: 'horizontal'             size_hint: 1, .4             spacing: 50             canvas.before:                 color:                     rgb: 0.8, 0.8, 0.8                 rectangle:                     pos: self.pos                     size: self.size             label:                 text: 'duration'                 font_size: 30                 color: 0.18, .5, .92, 1              button:                 id: btn                 text: 'select duration of time...'                 font_size: 15                 on_release: dropdown.open(self)                 height: '48dp'                 pos_hint: { 'top' : 0.75}                 size_hint: .8, .5              dropdown:                 id: dropdown                 on_parent: self.dismiss()                 on_select: btn.text = '{}'.format(args[1])                  button:                     text: '1 week'                     font_size: 15                     size_hint_y: none                     height: '48dp'                     on_release: root.addrecipe()                  button:                     text: '2 weeks'                     font_size: 15                     size_hint_y: none                     height: '48dp'                     #on_release: root.formatscreen(5, 'vegetarian lasagne')                  button:                     text: '3 weeks'                     font_size: 15                     size_hint_y: none                     height: '48dp'                     #on_release: root.formatscreen(3, 'tomato , linguine')             widget:                 size_hint: .02, 1          boxlayout:             canvas.before:                 color:                     rgb: 1, 1, 1                 rectangle:                     pos: self.pos                     size: self.size             scrollview:                 scroll_timeout: 250                 scroll_distance: 20                 do_scroll_y: true                 do_scroll_x: false                  gridlayout:                     id: grid                     height: self.minimum_height                     cols: 1                     spacing: 45                     padding: 25                     size_hint_y: none  <recipelabel>:     label:         text: root.recipename         color: (0.18, .5, .92, 1)         font_size: 30         canvas.before:             color:                 rgb: 0.18, .5, .92             rectangle:                 pos: self.pos                  size: self.size  <ingredient>:     label:         text: root.ingredientname         color: (0.18, .5, .92, 1)         font_size: 15     label:         text: root.quantity         color: (0.18, .5, .92, 1)         font_size: 15     checkbox:         active: true         on_active: root.activate_checkbox         color: (0.18, .5, .92, 1)  <recipe>:     label:         text: 'ingredient'         color: (0.18, .5, .92, 1)         font_size: 20     label:         text: 'quantity'           color: (0.18, .5, .92, 1)         font_size: 20     widget:         size_hint: .2, 1  ''')  class temprecipeapp(app):     def build(self):         return root_widget  if __name__ == "__main__":     temprecipeapp().run()

if run code (just copy , paste python file , should work if have kivy installed), select '1 week' dropdown menu load 1 of these 'recipe blocks' i'm trying create, 2 things go wrong. firstly, checkbox not clickable @ all. cannot change state. secondly, label of 'test' label @ top of scrollview should have blue background doesn't show @ all. believe both these issues scrollview/grid can't sure. ideas should do?


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