I have been trying off and on for two weeks to figure this out with no luck. This is the first time in my coding learning journey i've felt actually completely stuck. Any help is incredibly appreciated.
Right now my issue is changing screens outside of my .kv file. Right now I am trying to use:
class RootScreen(Screen):
def onNextScreen(self, btn, fileName):
MDApp.get_running_app().root.current = "ScreenVideo1"
MDApp.get_running_app().root.ScreenVideo1.test_on_enter(r'C:filelocation' + fileName + '.MOV')
But that gives the error code:
'RootScreen' object has no attribute 'ScreenVideo1'
main.py
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivymd.theming import ThemableBehavior
from kivymd.uix.list import MDList
from kivy.uix.screenmanager import ScreenManager, Screen, NoTransition
from kivy.properties import ObjectProperty
from kivy.uix.videoplayer import VideoPlayer
from kivy.uix.actionbar import ActionBar
from kivy.uix.button import Button
from kivy.core.window import Window
#remove after dev
Window.size = (300,500)
Window.clearcolor = (.976, .980, .996, 1)
screen_helper = r"""
RootScreen:
MDNavigationLayout:
ScreenManager:
id: screen_manager
ScreenHome:
id: screen_home
manager: screen_manager
name: "Home"
ScrollView:
pos_hint: {'bottom':1}
do_scroll_y: True
BoxLayout:
orientation: 'vertical'
padding: 15
spacing: 20
#size_hint: None, None
height: self.minimum_height
size_hint: (1, 2)
MDToolbar:
title: "POTUS"
left_action_items:[["menu",lambda x: nav_drawer.set_state("open")]]
elevation: 8
Widget:
StrokeButton:
text: "Video Category 1"
back_color: (0.576, 0.698, 0.996, 1) if self.state == 'normal' else (0.502, 0, 0.502, .75)
on_release: screen_manager.current = "Video1"
ScreenAbout:
id: screen_about
manager: screen_manager
name: "About"
MDLabel:
text: "About"
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: "POTUS"
left_action_items:[["menu",lambda x: nav_drawer.set_state("open")]]
elevation: 8
Widget:
ScreenHelp:
id: screen_help
manager: screen_manager
name: "Help"
MDLabel:
text: "Help"
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: "POTUS"
left_action_items:[["menu",lambda x: nav_drawer.set_state("open")]]
elevation: 8
Widget:
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: "POTUS"
left_action_items:[["menu",lambda x: nav_drawer.set_state("open")]]
elevation: 8
Widget:
ScreenVideo1:
id: screen_video1
manager: screen_manager
name: "Video1"
GridLayout:
pos_hint: {'top': 1}
cols:1
rows:5
ActionBar:
pos_hint: {'top': 1}
height:'100sp'
ActionView:
ActionPrevious:
with_previous: True
on_release: screen_manager.current = "Home"
StrokeButton:
text: " Video option 1"
back_color: (0.576, 0.698, 0.996, 1) if self.state == 'normal' else (0.502, 0, 0.502, .75)
on_release: root.onNextScreen(self, 'heart')
StrokeButton:
text: "Video option 2"
back_color: (0.576, 0.698, 0.996, 1) if self.state == 'normal' else (0.502, 0, 0.502, .75)
on_release:
StrokeButton:
text: "Video option 3"
back_color: (0.576, 0.698, 0.996, 1) if self.state == 'normal' else (0.502, 0, 0.502, .75)
on_release:
MDNavigationDrawer:
id: nav_drawer
BoxLayout:
orientation: 'vertical'
spacing: '8dp'
padding: '8dp'
MDLabel:
text: "blah blah blah"
font_style: 'Subtitle1'
size_hint_y: None
height: self.texture_size[1]
MDLabel:
text: "blah blah blah"
font_style: "Caption"
size_hint_y: None
height: self.texture_size[1]
ScrollView:
MDList:
OneLineIconListItem:
on_release:
screen_manager.current = "Home"
text: 'Home'
IconLeftWidget:
icon:"folder-home"
on_release:
screen_manager.current = "Home"
OneLineIconListItem:
on_release:
screen_manager.current = "Help"
text: 'Help'
IconLeftWidget:
icon:"help-circle-outline"
on_release:
screen_manager.current = "Help"
OneLineIconListItem:
on_release:
screen_manager.current = "About"
text: 'About'
IconLeftWidget:
icon: "doctor"
on_release:
screen_manager.current = "About"
<StrokeButton@Button>:
background_color:(0,0,0,0)
background_normal:''
back_color:(1,0,1,1)
border_radius: 18
color: self.back_color
bold: True
canvas.before:
Color:
rgba: self.back_color
Line:
rounded_rectangle: (self.pos[0],self.pos[1],self.size[0],self.size[1],self.border_radius)
width: 1.2
"""
class RootScreen(Screen):
def onNextScreen(self, btn, fileName):
MDApp.get_running_app().root.current = "ScreenVideo1"
MDApp.get_running_app().root.ScreenVideo1.test_on_enter(r'C:filelocation' + fileName + '.MOV')
class ScreenHome(Screen):
pass
class ScreenAbout(Screen):
pass
class ScreenHelp(Screen):
pass
class ScreenVideo1(Screen):
def test_on_enter(self, vidname):
#self.add_widget(Button(text="Back"))
self.vid = VideoPlayer(source=vidname, state='play',
options={'allow_stretch':True,
'eos': 'loop'})
self.add_widget(self.vid)
def on_leave(self):
pass
def onBackBtn(self):
self.vid.state = 'stop'
self.remove_widget(self.vid)
MDApp.get_running_app().root.current = "ScreenVideo1"
class DemoApp(MDApp):
def build(self):
screen = Builder.load_string(screen_helper)
return screen
DemoApp().run()
It used to be very easy when I was building my app with Manager
class Manager(ScreenManager):
transition = NoTransition()
screen_one = ObjectProperty(None)
screen_two = ObjectProperty(None)
screen_home = ObjectProperty(None)
def __init__(self, *args, **kwargs):
super(Manager, self).__init__(*args, **kwargs)
# list to keep track of screens we were in
self.list_of_prev_screens = []
class ScreensApp(MDApp):
def build(self):
return Manager()
if __name__ == "__main__":
ScreensApp().run()
And then I would just change screens using manager. But now that I am using the navigation drawer I can no longer build my app with manager.
class ScreenOne(Screen):
def onNextScreen(self, btn, fileName):
self.manager.list_of_prev_screens.append(btn.parent.name)
self.manager.current = 'screen2'
self.manager.screen_two.test_on_enter(r'C:filelocation' + fileName + '.MOV')
