Kivy tutorial 07 component and attribute binding implementation button button click to modify the label component (tutorial includes source code)

Actual combat needs

Component and attribute binding implement buttons button Click Modify label Components

Running effect

Solution

1. to label Component add id

    Label:
		id: time
        text: 'format:[b]00[/b]:00:00'
		markup: True

2. We go through id modify label The text of

self.root.ids.time.text = "hello"

3. add to button Components

		Button:
			id: start_stop
			text: 'Start'
			font_size: 25
    		bold: True
			border: (2, 2, 2, 2)
			on_press: app.start()

adopt on_press To specify the response function

4. Write response functions

def start(self):
		self.root.ids.time.text = "hello"

Complete code

from kivy.app import App
from kivy.lang import Builder
from kivy.core.windo