Kivy：使用切换按钮来更改另一个切换按钮

Question

例如状态，在Kivy语言：

<MainToggle@ToggleButton>: 
    on_state: # something that will change the state of the sub-toggle 

<SubToggle@ToggleButton>: 
    on_state: self.background_color = 0,0,0,1 # the sub-toggle button changes color 

Answer 1

你可以参考使用kivy ID系统的其他部件。注意下面的代码：

from kivy.base import runTouchApp 
from kivy.lang import Builder 

runTouchApp(Builder.load_string(""" 
<MainToggle@ToggleButton>: 

<SubToggle@ToggleButton>: 
    on_state: self.background_color = 0,0,0,1 # the sub-toggle button changes color 

BoxLayout: 
    MainToggle: 
     id: my_toggle1 # an id allows us to refer to this widget 
     text: "Main Toggle" 
     # change the other toggle's state using its id 
     on_state: my_toggle2.state = "down" if my_toggle2.state == "normal" else "normal" 
    SubToggle: 
     id: my_toggle2 
     text: "Sub Toggle" 
      """)) 

这里是一个极好的video教程，使用kivy ID系统中的实际例子。如果您无法绕过这个问题，请回复。