Table Of Contents

Related Topics

Button

The button is a Label with an action associated to it that is triggered when the button is pressed (or released after a click/touch). To configure the button, you can use the same properties that you can use for the Label class:

button = Button(text='Hello world', font_size=14)

Attaching a callback when the button is pressed (clicked/touched)

def callback(instance):
    print 'The button <%s> is being pressed' % instance.text

btn1 = Button(text='Hello world 1')
btn1.bind(on_press=callback)
btn2 = Button(text='Hello world 2')
btn2.bind(on_press=callback)

If you want to be notified every time the button state changes, you can attach to the Button.state property

def callback(instance, value):
    print 'My button <%s> state is <%s>' % (instance, value)
btn1 = Button(text='Hello world 1')
btn1.bind(state=callback)
class kivy.uix.button.Button(**kwargs)

Bases: kivy.uix.label.Label

Button class, see module documentation for more information.

Events :
on_press

Fired when the button is pressed.

on_release

Fired when the button is released (i.e., the touch/click that pressed the button goes away).

state

State of the button, can be one of ‘normal’ or ‘down’. By default, the state of the button is ‘normal’.

state is an OptionProperty.