在下面的代码中更改测试标签(使用my_callback函数)的正确方法是什么:
class Hello(FloatLayout):
def __init__(self,**kwargs):
super(Hello,self).__init__(**kwargs)
self.Test = Label(text = "Aaa", pos=(0,0), font_size=70)
self.add_widget(self.Test)
def my_callback(self):
print('My callback is called')
self.Test.text = "Bbb"
Clock.schedule_interval(my_callback, 3)
class app1(App):
def build(self):
return Hello()
if __name__=="__main__":
app1().run()
现在有错误:
AttributeError:'float'对象没有属性'Test'
自我呼叫可能有问题吗?
答案 0 :(得分:1)
class Hello(FloatLayout):
def __init__(self,**kwargs):
super(Hello,self).__init__(**kwargs)
self.Test = Label(text = "Aaa", pos=(0,0), font_size=70)
self.add_widget(self.Test)
Clock.schedule_interval(self.my_callback, 3)
def my_callback(self, dt=0):
print('My callback is called')
self.Test.text = "Bbb"
你可能想先看看一些基本的python教程,然后再跳到kivy ......