How to Create DropDown in Python Kivy

In this Python Kivy article we want to learn about How to Create DropDown in Python Kivy, so Python Kivy is an open source GUI framework for Python Programming Language, that you can use it for building multi touch applications for different platforms like desktops, mobile devices and Raspberry Pi. Kivy DropDown is a list of options that can be selected by clicking or tapping on a button, in this article we want to talk tjay how to create dropdowns in Python Kivy.

First of all we need to import required modules from Kivy.

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.dropdown import DropDown

from kivy.app import App

from kivy.uix.button import Button

from kivy.uix.dropdown import DropDown

After that we have imported the necessary libraries, we can create a dropdown by instantiating DropDown class.

dropdown = DropDown()

1	dropdown = DropDown()

For adding options to the dropdown, we need to create buttons for each option and add them to the dropdown, in this code we are going to loop through list of the options, after that we set the text of each button and also we set the size_hint.

for option in ['GeeksCoders', 'Python', 'Java']:
    btn = Button(text=option, size_hint_y=None, height=44)
    btn.bind(on_release=lambda btn: dropdown.select(btn.text))
    dropdown.add_widget(btn)

for option in ['GeeksCoders', 'Python', 'Java']:

btn = Button(text=option, size_hint_y=None, height=44)

btn.bind(on_release=lambda btn: dropdown.select(btn.text))

dropdown.add_widget(btn)

Now that we have created the dropdown and added options to it, we need to add it to our Kivy app.

class MyApp(App):
    def build(self):
        main_button = Button(text='Click me', size_hint=(None, None))
        main_button.bind(on_release=dropdown.open)
        dropdown.bind(on_select=lambda instance, x: setattr(main_button, 'text', x))
        return main_button

class MyApp(App):

def build(self):

main_button = Button(text='Click me', size_hint=(None, None))

main_button.bind(on_release=dropdown.open)

dropdown.bind(on_select=lambda instance, x: setattr(main_button, 'text', x))

return main_button

At the end we can run our app, for running our app we need to create an instance of our MyApp class and call the run() method.

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

1 2	if __name__ == '__main__': MyApp().run()

This is the complete code for this article

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.dropdown import DropDown

class MyApp(App):
    def build(self):
        dropdown = DropDown()
        for option in ['GeeksCoders', 'Python', 'Java']:
            btn = Button(text=option, size_hint_y=None, height=44)
            btn.bind(on_release=lambda btn: dropdown.select(btn.text))
            dropdown.add_widget(btn)

        main_button = Button(text='Click me', size_hint=(None, None))
        main_button.bind(on_release=dropdown.open)
        dropdown.bind(on_select=lambda instance, x: setattr(main_button, 'text', x))

        return main_button

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