Kivy Login example

.gitignore

*.pyc

connected.kv

<Connected>:
    BoxLayout:
        orientation: 'vertical'

        Label:
            text: "You are now connected"
            font_size: 32
        Button:
            text: "Disconnect"
            font_size: 24
            on_press: root.disconnect()

connected.py

from kivy.app import App
from kivy.uix.screenmanager import Screen, SlideTransition

class Connected(Screen):
    def disconnect(self):
        self.manager.transition = SlideTransition(direction="right")
        self.manager.current = 'login'
        self.manager.get_screen('login').resetForm()

login.kv

#:include connected.kv

<Login>:
    BoxLayout
        id: login_layout
        orientation: 'vertical'
        padding: [10,50,10,50]
        spacing: 50

        Label:
            text: 'Welcome'
            font_size: 32

        BoxLayout:
            orientation: 'vertical'

            Label:
                text: 'Login'
                font_size: 18
                halign: 'left'
                text_size: root.width-20, 20

            TextInput:
                id: login
                multiline:False
                font_size: 28

        BoxLayout:
            orientation: 'vertical'
            Label:
                text: 'Password'
                halign: 'left'
                font_size: 18
                text_size: root.width-20, 20

            TextInput:
                id: password
                multiline:False
                password:True
                font_size: 28

        Button:
            text: 'Connexion'
            font_size: 24

            on_press: root.do_login(login.text, password.text)

main.py

from kivy.app import App
from kivy.properties import StringProperty
from kivy.uix.screenmanager import ScreenManager, Screen, SlideTransition
import os

from connected import Connected

class Login(Screen):
    def do_login(self, loginText, passwordText):
        app = App.get_running_app()

        app.username = loginText
        app.password = passwordText

        self.manager.transition = SlideTransition(direction="left")
        self.manager.current = 'connected'

        app.config.read(app.get_application_config())
        app.config.write()

    def resetForm(self):
        self.ids['login'].text = ""
        self.ids['password'].text = ""

class LoginApp(App):
    username = StringProperty(None)
    password = StringProperty(None)

    def build(self):
        manager = ScreenManager()

        manager.add_widget(Login(name='login'))
        manager.add_widget(Connected(name='connected'))

        return manager

    def get_application_config(self):
        if(not self.username):
            return super(LoginApp, self).get_application_config()

        conf_directory = self.user_data_dir + '/' + self.username

        if(not os.path.exists(conf_directory)):
            os.makedirs(conf_directory)

        return super(LoginApp, self).get_application_config(
            '%s/config.cfg' % (conf_directory)
        )

if __name__ == '__main__':
    LoginApp().run()

hi,
how to run this code i couldnt understand

Can you explain how the screen management work and transition?

I am getting a complete black screen after running this.

Even I am getting a black screen. Can you let us know how to resolve it?

how to run it ...m stuk....i have installed kivy ,wheel,pygame,cython but unable to run it...getting error lyk dis:

use this command:
conda install -c conda-forge kivy wheel pygame cython

On windows use python -m conda -c conda-forge kivy wheel pygame cython

Great ... Thanks a lot

Great, super contribution, a question many as I do to take the data of the variable for example, idUser, to the connected file and put print it in that file.

there is nothing like connected module...!! please fix this

Priyanshthehacker you didnt create that connected.py file wich imports this

awsome dude thnks a lot