使用另一个按钮覆盖kivy中的按钮功能

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout

class MyButton(Button):
    def on_release(self):
        # 在这里实现新按钮的功能逻辑
        print("新按钮被点击了！")

class MyApp(App):
    def build(self):
        layout = BoxLayout(orientation='vertical')
        
        # 创建原有按钮
        original_button = Button(text='原有按钮')
        layout.add_widget(original_button)
        
        # 创建覆盖按钮
        override_button = MyButton(text='覆盖按钮')
        layout.add_widget(override_button)
        
        return layout

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