How to fix kivy.factory.FactoryException: Unknown class Error

[뿌야]

I have some problem during my kivy project.

I stayed long time search google but I didn't solved it.

Here is My Error code

     raise FactoryException('Unknown class <%s>' % name)
 kivy.factory.FactoryException: Unknown class <FilechooserIconView>

Here is My Python Code

import kivy

kivy.require('1.9.1')

from kivy.app import App

from kivy.uix.label import Label 

from kivy.properties import ListProperty

from kivy.graphics import Color, Rectangle 

from kivy.uix.floatlayout import FloatLayout 

from kivy.uix.boxlayout import BoxLayout 

from kivy.uix.button import Button 

from kivy.uix.widget import Widget 

from kivy.uix.textinput import TextInput 

from kivy.uix.camera import Camera 

from kivy.core.audio import SoundLoader

from kivy.uix.popup import Popup 

from kivy.lang import Builder

import os

#kv file

kv = '''

#:import Factory kivy.factory.Factory

BoxLayout:

    orientation: "vertical"

    Upper_bar:

        size_hint: (1, 0.1)

    Label:

        text: "Select Mode"

        size_hint: 1, .9

        font_size: 50

    BoxLayout:

        padding: 200

        Button:

            text: "Object"

            size_hint: .5, .0

            font_size: 50

            on_press: Factory.ObjectPop().open()

        Button:

            text: "Street"

            size_hint: .5, .0

            font_size: 50

            on_press: app.button_click_callback2(self) #Button callback

<Upper_bar>:

    BoxLayout:

    Button:

        size_hint: (0.3, 1)

        text: 'INFORMATION'

        on_press: Factory.InformationPop().open()

#Information Popup

<InformationPop@Popup>:

    size_hint: 0.5, 0.5

    title: 'INFORMATION'

    auto_dismiss: False #close를 눌러야 종료

    BoxLayout:

        orientation: 'vertical'

        Label:

            text:

                """AIObjectCameraApp

                Name: 

                Student Number: 

                E-mail:  """

        Button:

            text:

                'Close'

            on_press:

                root.dismiss()

            size_hint_y: None

            height: '40dp'

#Object Popup

<ObjectPop@Popup>:

    title: 'Select Picture'

    auto_dismiss: False

    size_hint: (0.9, 0.9)

    BoxLayout:

        size: root.size

        pos: root.pos

        orientation: 'vertical'

        FilechooserIconView:

            id: Filechooser

        BoxLayout:

            size_hint_y: None

            height: 30

            Button:

                text: 'Select'

                on_release:

                    app.Save_path = filechooser.path

                    root.dismiss()

            Label:

            Button:

                text: 'Cancel'

                on_release: root.dismiss()

'''

class Upper_bar(BoxLayout): 

    pass 

class ObjectPop(Popup):

    def __init__(self, **kwargs):

        super(ObjectPop, self).__init__(**kwargs)

        self.ids['filechooser'].path = os.getcwd()

class AIObjectCameraApp(App): 

    save_path = os.getcwd()

    pass

    def button_click_callback2(self, instance): #Callback print2

        print('You Select %s' % instance.text)

    def build(self): 

        return Builder.load_string(kv) #kv Builder(pass)

if __name__ == '__main__':

    AIObjectCameraApp().run() 

[Elliot Garbus]

FileChooserIconView

Not:

FilechooserIconView

 

See highlight below.

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[뿌야]

Thank you your comment. But now Another error occurs.

  self.ids['fileChooser'].path = os.getcwd()
 KeyError: 'fileChooser'

2020년 4월 19일 일요일 오전 3시 11분 6초 UTC+9, Elliot Garbus 님의 말:

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[Elliot Garbus]

FileChooserIconView:
    id: filechooser

 

Not id: Filechooser

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[뿌야]

Oh. I solved this problem. Thank you sir.

2020년 4월 19일 일요일 오전 3시 38분 14초 UTC+9, 뿌야 님의 말: