Kivy页面布局中自定义组件位置的方法，可以通过指定组件的位置、尺寸和边距等属性来实现。

Python实现

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
class MyGridLayout(GridLayout):
    def __init__(self, **kwargs):
        super(MyGridLayout, self).__init__(**kwargs)
        self.cols = 1  # 设定1列
        # 添加按钮并指定位置、尺寸和边距
        self.add_widget(Button(text='1', pos=(100, 100), size=(50, 50), padding=(10, 10)))
        self.add_widget(Button(text='2', pos=(150, 150), size=(50, 50), padding=(10, 10)))
        self.add_widget(Button(text='3', pos=(200, 200), size=(50, 50), padding=(10, 10)))
class MyApp(App):
    def build(self):
        return MyGridLayout()
if __name__ == '__main__':
    MyApp().run()

KV实现

from kivy.app import App
from kivy.lang import Builder
Builder.load_string('''
<MyGridLayout>:
    cols: 1  # 设定1列
    Button:
        text: '1'
        pos: 100, 100
        size: 50, 50
        padding: 10, 10
    Button:
        text: '2'
        pos: 150, 150
        size: 50, 50
        padding: 10, 10
    Button:
        text: '3'
        pos: 200, 200
        size: 50, 50
        padding: 10, 10
''')
class MyGridLayout(GridLayout):
    pass
class MyApp(App):
    def build(self):
        return MyGridLayout()
if __name__ == '__main__':
    MyApp().run()