as stated in the title, I'm stuck when I try to show a BoxLayout
which contains a video and two buttons - I have created an application
which will take an input from user once user clicks on a button I'll
show a pop-up which has a video and two buttons - Now the problem is
first click it'll work fine but second time if i click it says the
following error:
kivy.uix.widget.WidgetException: Cannot add kivy.uix.video.Video
object at 0x0000000005C7EB40, it already has a parent
kivy.uix.boxlayout.BoxLayout object at 0x0000000005DB7B40
When I tried handling the exception but after that video plays in the
background with the message Cannot add kivy.uix.video.Video object at
0x0000000005C7EB40, it already has a parent kivy.uix.boxlayout.BoxLayout
object at 0x0000000005DB7B40
from __future__ import print_function
from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
from kivy.uix.popup import Popup
from kivy.properties import StringProperty
from kivy.properties import ObjectProperty
from kivy.uix.progressbar import ProgressBar
from kivy.uix.video import Video
from kivy.uix.tabbedpanel import TabbedPanel
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.widget import WidgetException
import re, wmi
kv = """
<MainPage>:
manager:screen_mgr
do_default_tab: False
textinputtext: waybill.text
ScreenManager:
id: screen_mgr
#transition: FadeTransition
Screen:
manager: screen_mgr
id: intro
orientation: 'horizontal'
name: 'User'
canvas.before:
Rectangle:
pos: self.pos
size: self.size
source: 'index.png'
AnchorLayout:
anchor_x: 'center'
anchor_y: 'center'
BoxLayout:
orientation:'horizontal'
size_hint: .5, .1
canvas:
Color:
rgb: 1, 1, 1
Rectangle:
pos: self.pos
size: self.size
spacing: 20
pos_hint: {'center_x':.8, 'center_y': .8}
AnchorLayout:
anchor_x: 'left'
size_hint_x: .5
TextInput:
id: waybill
width: 20
text: root.textinputtext
multiline: False
height: self.minimum_height
size_hint_y: None
font_size: 30
focus: True
on_text: self.text
on_text_validate:app.on_waybill()
AnchorLayout:
anchor_x: 'right'
size_hint_x: None
Button:
size_hint: None, None
height: 50
width: self.texture_size[0]
padding: 10, 10
text: "Compare"
on_release: root.compareClicked()
AnchorLayout:
anchor_x: 'right'
anchor_y: 'bottom'
BoxLayout:
orientation:'horizontal'
size_hint: .5, .1
canvas:
Color:
rgb: 1, 1, 1
Rectangle:
pos: self.pos
size: self.size
spacing: 50
pos_hint: {'center_x':.8, 'center_y': .8}
AnchorLayout:
anchor_x: 'right'
size_hint_x: None
Button:
id: statebtn
size_hint: None, None
height: 50
width: self.texture_size[0]
padding: 10, 10
text: root.getusbdevices()
AnchorLayout:
anchor_x: 'left'
anchor_y: 'top'
BoxLayout:
orientation:'horizontal'
size_hint: .5, .1
canvas:
Color:
rgb: 1, 1, 1
Rectangle:
pos: self.pos
size: self.size
spacing: 50
pos_hint: {'center_x':.5, 'center_y': .5}
AnchorLayout:
anchor_x: 'right'
size_hint_x: None
Button:
size_hint: None, None
height: 50
width: self.texture_size[0]
padding: 10, 10
on_release:root.current = root.switch_screen()
text: "Admin"
TabbedPanelHeader:
text: intro.name
# store a screen name to link the tab to a screen
screen: intro.name
"""
Builder.load_string(kv)
waybill = TextInput(text="Enter Waybill No.", multiline=False)
adwaybill = TextInput(text="Enter Waybill No.", multiline=False)
statebtn = Button(text="INSTRUMENT_NOT_FOUND")
player1 = Video(source='connect.mp4')
player2 = Video(source='place.mp4')
waybills = []
class MainPage(TabbedPanel):
screen_mgr = ObjectProperty(None)
textinputtext = StringProperty()
def __init__(self, **kwargs):
super(MainPage, self).__init__(**kwargs)
self.register_event_type('on_text')
self.textinputtext = "Enter Waybill No."
def on_text(self):
return self.textinputtext
def on_text_validate(self):
return self.textinputtext
def on_focus(self, obj, focused):
if not focused:
self.dispatch('on_text_validate')
def compareClicked(self):
self.progress_bar = ProgressBar()
self.progress_bar.value = 1
print (self.on_text())
if self.on_text()!='Enter Waybill No.' and self.getusbdevices() == u"CONNECTED":
self.popup_1()
def popup_1(self):
self.box = BoxLayout(orientation='vertical', padding=(10))
self.box.add_widget(self.playPlace())
popup = Popup(title='Warning: Please Place', title_size=(30),
title_align='center', content=self.box,
size_hint=(None, None), size=(400, 400),
auto_dismiss=False)
self.box.add_widget(Button(text="YES TO COMPARE", on_release=popup.dismiss))
self.box.add_widget(Button(text="NO TO GO BACK", on_release=popup.dismiss))
popup.bind()
popup.open()
def playConnect(self):
player1.state = 'play'
return player1
def playPlace(self):
player2.state = 'play'
return player2
def getusbdevices(self):
c = wmi.WMI()
statebtn.text = u"INSTRUMENT_NOT_FOUND"
wql = "Select * From Win32_USBControllerDevice"
for item in c.query(wql):
if "USB Device" in item.Dependent.Caption:
statebtn.text = u"CONNECTED"
else:
statebtn.text = u"INSTRUMENT_NOT_FOUND"
return statebtn.text
def switch_screen(self):
self.manager.transition = FadeTransition()
self.manager.current = self.manager.previous()
return self.manager.current
def switch_to(self, header):
self.manager.current = header.screen
self.current_tab.state = "normal"
header.state = 'down'
self._current_tab = header
class KartScanApp(App):
def build(self):
return MainPage()
def on_waybill(self):
waybill.bind(text=MainPage.on_text)
return waybill.text
if __name__ == '__main__':
KartScanApp().run()
