我是python和kivy的新手，我试图在按下任何按钮时清除主机中的所有小部件，我的代码如下：from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.popup import Popup
from kivy.uix.label import Label
spots={}
class spot(Button):
'''
classdocs
'''
def __init__(self, **kwargs):
'''
Constructor
'''
super(spot,self).__init__(**kwargs)
self.ismine=False
if 'text' in kwargs:
self.text=kwargs['text']
else:
self.text="X"
def on_press(self, *args, **kwargs):
#return Button.on_press(self, *args, **kwargs)
game.spottouched(self, self.text)
class game(BoxLayout):
def __init__(self,**kwargs):
super(game,self).__init__(**kwargs)
self.m=minesholder(rows=25, cols=25)
self.add_widget(self.m)
self.attachtogrid()
def attachtogrid(self):
self.m.clear_widgets()
spots.clear()
for r in range(0,25):
for c in range(0,25):
idd=str(r)+","+str(c)
spots[idd]=idd
self.m.add_widget(spot(text=idd))
def spottouched(self,spotid):
#popup=Popup(title=spotid)
#popup.open()
self.clear_widgets()
最后一行是用来清除小部件的，spot类有一个on\u press事件。我正在尝试将应用程序上的按钮按下事件传递到一个保持框布局(游戏类)，你能告诉我/指给我一个正确的方向，让我靠在如何传递事件上吗？在
谢谢。在