Popup Dialog In Kivy

Overview:

  • Kivy supports modal popup dialogs through class Popup.

 

  • Popup dialogs are used in an UX to convey certain obvious messages to the user.

 

  • Though, UX applications convey messages to the users through status bars as well for specific messages which need to be told with emphasis can still be done through popup dialogs.

  

Example:

# Kivy example for the Popup widget

from kivy.app import App

 

from kivy.uix.button import Button

from kivy.uix.label import Label

from kivy.uix.popup import Popup

from kivy.uix.gridlayout import GridLayout

 

# Make an app by deriving from the kivy provided app class

class PopupExample(App):

 

    #override the build method and return the root widget of this App

    def build(self):

        # Define a grid layout for this App

        self.layout = GridLayout(cols=1, padding=10)

 

        # Add a button

        self.button = Button(text="Click for pop-up")

        self.layout.add_widget(self.button)

       

        # Attach a callback for the button press event

        self.button.bind(on_press=self.onButtonPress)

        return self.layout

 

    # On button press - Create a popup dialog with a label and a close button

    def onButtonPress(self, button):

        layout      = GridLayout(cols=1, padding=10)

       

        popupLabel  = Label(text  = "Click for pop-up")

        closeButton = Button(text = "Close the pop-up")

 

        layout.add_widget(popupLabel)

        layout.add_widget(closeButton)       

   

        # Instantiate the modal popup and display

        popup = Popup(title='Demo Popup',

                      content=layout)  

                      #content=(Label(text='This is a demo pop-up')))

        popup.open()   

       

        # Attach close button press with popup.dismiss action

        closeButton.bind(on_press=popup.dismiss)   

       

# Run the app

if __name__ == '__main__':

    PopupExample().run()

 

Output:  

Popup dialog in Kivy - Example


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