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Kivy教程之 08 倒计时App实现timer调用(教程含源码)
2022-07-04 12:32:00 【知识大胖】
实战需求
倒计时App实现timer调用
运行效果
解决方案
1.引入Clock组件
from kivy.clock import Clock
2. Clock组件实现timer
def on_start(self):
Clock.schedule_interval(self.update, 0)
3. update回调更新界面
def update(self, nap):
# print('update')
if self.sw_started:
self.sw_seconds += nap
m, s = divmod(self.sw_seconds, 60)
self.root.ids.time.text = ('%02d:%02d.[size=40]%02d[/size]' %(int(m), int(s), int(s * 100 % 100)))
通过on_press来指定响应函数
完整代码
from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.utils import get_co
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