Navigation drawer is not hiding in kivymd while using nested screenmanagers - python-3.x

Question

MDScreen:
MDNavigationLayout:
ScreenManager:
MDScreen:
MDBoxLayout:
orientation:'vertical'
MDToolbar:
title:"Teacher Section"
left_action_items:[["menu",lambda x:nav_drawer.set_state("open")]]
right_action_items:[["magnify",lambda x:None]]
elevation:5
MDScreen:
ScreenManager:
id:nestedsm
MDScreen:
name:"Screen1"
MDLabel:
text:"Screen1"
MDScreen:
name:"Screen2"
MDLabel:
text:"Screen2"
Widget:
MDNavigationDrawer:
id: nav_drawer
ContentNavigationDrawer:
orientation: 'vertical'
padding: "8dp"
spacing: "8dp"
Image:
id: avatar
size_hint: (1,1)
source: "images/kitten.png"
MDLabel:
text: "Bhushan Ghevde"
font_style: "Subtitle1"
size_hint_y: None
height: self.texture_size[1]
MDLabel:
text: "bhushanghevde15#gmail.com"
size_hint_y: None
font_style: "Caption"
height: self.texture_size[1]
ScrollView:
DrawerList:
id: md_list
MDList:
OneLineIconListItem:
text: "Add Teacher"
on_release:
nestedsm.current = 'Screen1'
IconLeftWidget:
icon: "face-profile"
OneLineIconListItem:
text: "Upload"
on_release:
nestedsm.current = 'Screen2'
IconLeftWidget:
icon: "upload"
I am creating a collage level app for manageing student details . The Normal Screenmanager works perfectly fine . while i was trying nested Screen manager i am facing problems . the problem is , when i try to change screen from navigation drawer , it changes screen but doesnt hide automatically , i have to click back again to hide. any help is appreciated . Thank you in advanced..
i have provided video of issue

Answer 1

Welcome, you can add the line:
root.ids.nav_drawer.set_state(new_state='toggle', animation=True)
Under the "on_release" of every list item, if you are adding those using the "for loop", you should add them like:
self.root.ids.content_drawer.ids.md_list.add_widget(OneLineIconListItem(icon=icon_name, text="Item number 1", on_release=lamda x:(self.root.ids.nav_drawer.set_state(new_state='toggle', animation=True))))
Or you can just implement it inside of the kivy lang:
Screen:
#MDNavigationLayout: #unknown class
ScreenManager:
Screen:
MDBoxLayout:
orientation:'vertical'
MDToolbar:
title:"Teacher Section"
left_action_items:[["menu",lambda x:nav_drawer.set_state("open")]]
right_action_items:[["magnify",lambda x:None]]
elevation:5
MDScreen:
ScreenManager:
id:nestedsm
MDScreen:
name:"Screen1"
MDLabel:
text:"Screen1"
MDScreen:
name:"Screen2"
MDLabel:
text:"Screen2 jbsidis"
Widget:
MDNavigationDrawer:
id: nav_drawer
BoxLayout:
orientation: 'vertical'
padding: "8dp"
spacing: "8dp"
Image:
id: avatar
size_hint: (1,1)
source: "images/pro.jpg" #"images/kitten.png"
MDLabel:
text: "Bhushan Ghevde"
font_style: "Subtitle1"
size_hint_y: None
height: self.texture_size[1]
MDLabel:
text: "bhushanghevde15#gmail.com"
size_hint_y: None
font_style: "Caption"
height: self.texture_size[1]
ScrollView:
MDList:
id: md_list
OneLineIconListItem:
text: "Add Teacher"
on_release:
nestedsm.current = 'Screen1'
root.ids.nav_drawer.set_state(new_state='toggle', animation=True)
IconLeftWidget:
icon: "face-profile"
OneLineIconListItem:
text: "Upload"
on_release:
nestedsm.current = 'Screen2'
root.ids.nav_drawer.set_state(new_state='toggle', animation=True)
IconLeftWidget:
icon: "upload"
Picture: