屏幕底部的内容...在使用Kivy添加ToolBar之后

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

class MyLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyLayout, self).__init__(**kwargs)
        
        # 创建ToolBar
        toolbar = Toolbar()
        
        # 添加按钮到ToolBar
        button1 = Button(text='Button 1')
        toolbar.add_widget(button1)
        
        button2 = Button(text='Button 2')
        toolbar.add_widget(button2)
        
        # 将ToolBar添加到布局中
        self.add_widget(toolbar)

class MyApp(App):
    def build(self):
        return MyLayout()

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