每秒闪动一个按钮
每秒闪动一个按钮
提问于 2018-12-09 22:48:30
我开始学基维了。下面的代码生成一个10x10按钮网格：
from kivy.uix.gridlayout import GridLayout
from kivy.app import App
from kivy.uix.button import Button
class MyApp(App):
def build(self):
layout = GridLayout(cols=10)
for i in range (1, 101):
layout.add_widget(Button(text=str(i)))
return layout
MyApp().run()
我想知道如何使每个按钮每秒钟打开和关闭，即按钮1打开0.5秒，关闭0.5秒，然后按钮2做同样的操作，并重复到按钮100？
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-12-09 23:18:46
您可以使用kivy.clock来安排事件：
from functools import partial
from kivy.clock import Clock
from kivy.uix.gridlayout import GridLayout
from kivy.app import App
from kivy.uix.button import Button
class MyApp(App):
def build(self):
self.butts = []
self.count = 0
layout = GridLayout(cols=10)
for i in range (1, 101):
butt = Button(text=str(i))
self.butts.append(butt)
layout.add_widget(butt)
# schedule call to self.flash every second
Clock.schedule_interval(self.flash, 1.0)
return layout
def flash(self, dt):
butt = self.butts[self.count]
butt.state = 'down'
# schedule call to set the button back to 'normal' in half a second
Clock.schedule_once(partial(self.setNormal, butt), 0.5)
self.count += 1
if self.count == len(self.butts):
# end the interval scheduling
return False
else:
return True
def setNormal(self, butt, dt):
butt.state = 'normal'
MyApp().run()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/53697456
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