How to use Kivy allow_stretch?

Question

Kivy allow_stretch function doesn't work. This is my code.

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

kv = """
GridLayout:
    cols: 3
    Image:
        source: "images/cake.jpeg"
        allow_stretch: False
    Image:
        source: "images/cake.jpeg"
        allow_stretch: True
"""


class TestApp(App):
    def build(self):
        return Builder.load_string(kv)


TestApp().run()

I wish the pictures will be different, but they look same. It looks like: ](https://i.sstatic.net/3dHrs.jpg)

Answer 1

You can try to set your image size. They may be too big

GridLayout:
    cols: 3
    Image:
        source: "images/cake.jpeg"
        size_hint: None, None
        size: 200, 200
        allow_stretch: False
    Image:
        source: "images/cake.jpeg"
        size_hint: None, None
        size: 200, 200
        allow_stretch: True