如何在kivy中制作画廊？

from kivy.app import App

class GalleryApp(App):
    pass

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

from kivy.uix.gridlayout import GridLayout
from kivy.uix.image import Image

class GalleryLayout(GridLayout):
    def __init__(self, **kwargs):
        super(GalleryLayout, self).__init__(**kwargs)
        self.cols = 3  # 设置为3列布局

        # 添加图像小部件
        for i in range(9):
            image = Image(source='image{}.jpg'.format(i+1))
            self.add_widget(image)

class GalleryApp(App):
    def build(self):
        return GalleryLayout()

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