Python 基维:如何在多个屏幕上运行相同的功能
我正在尝试制作一个计时器,它从一个随机的起始数字反复倒计时到零,直到达到预定的时间限制为止。我已经设法在一个屏幕上实现了这一点,但我在将其适应多个屏幕时遇到了困难 目前,如果我运行PleaseWork(boxLayout)类中的函数,它将完全按照它应该的方式运行。但是,我想添加一些屏幕,以便主屏幕上有一个显示“Go!”的按钮,松开该按钮后,计时器将启动。我希望能够从第二个屏幕循环到第三个屏幕,计时器上的值完全相同,但我不确定如何做到这一点 Py文件:Python 基维:如何在多个屏幕上运行相同的功能,python,kivy,kivy-language,Python,Kivy,Kivy Language,我正在尝试制作一个计时器,它从一个随机的起始数字反复倒计时到零,直到达到预定的时间限制为止。我已经设法在一个屏幕上实现了这一点,但我在将其适应多个屏幕时遇到了困难 目前,如果我运行PleaseWork(boxLayout)类中的函数,它将完全按照它应该的方式运行。但是,我想添加一些屏幕,以便主屏幕上有一个显示“Go!”的按钮,松开该按钮后,计时器将启动。我希望能够从第二个屏幕循环到第三个屏幕,计时器上的值完全相同,但我不确定如何做到这一点 Py文件: 从kivy.app导入应用 从kivy.la
从kivy.app导入应用
从kivy.lang导入生成器
从kivy.uix.screenmanager导入screenmanager,屏幕
从kivy.animation导入动画
从kivy.properties导入NumericProperty
从随机导入randint
类主窗口(屏幕):
通过
第二类窗口(屏幕):
通过
第三类(屏幕):
通过
类WindowManager(屏幕管理器):
通过
课堂作业(应用程序):
a=数值属性(0)
b=数值属性(0)
运行t=15
最小值=3
最大值=7
def启动(自):
self.a=randint(self.min,self.max)
self.anim=动画(a=0,持续时间=self.a)
如果self.run\u t-self.b问题-属性错误'a'
AttributeError:“SecondWindow”对象没有属性“a”
根本原因
类属性a
仅在类plesework()
中定义,该类不是根。根目录是类WindowManager()
其他问题
- 定义了两个应用程序类
- 缺少属性,
self.lap\u计数器
- 缺少kv
id:count\u down
inself.id['count\u down']
解决方案
py和kv文件中需要以下增强功能
py文件
- 从
class WindowManager()
中删除pass
,并删除类标题class plesework(App)
- 执行方法
reset()
将a
和b
重置为零
- 将
*args
作为参数添加到方法start()
代码片段-py文件
输出
太好了,谢谢!我一直在想这个问题,所以谢谢你,你帮了我很大的忙。。
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.animation import Animation
from kivy.properties import NumericProperty
from random import randint
class MainWindow(Screen):
pass
class SecondWindow(Screen):
pass
class ThirdWindow(Screen):
pass
class WindowManager(ScreenManager):
pass
class PleaseWork(App):
a = NumericProperty(0)
b = NumericProperty(0)
run_t= 15
min = 3
max = 7
def start(self):
self.a = randint(self.min, self.max)
self.anim = Animation(a=0, duration=self.a)
if self.run_t - self.b <= self.max:
self.a = self.run_t - self.b
print("a=",self.a,"b=",self.b)
self.anim = Animation(a=0, duration = self.a)
else:
print(self.run_t - self.b)
self.anim.bind(on_complete = self.start)
print('starting anim number:', self.lap_counter)
self.anim.start(self)
def count_up(self):
self.anim = Animation(b = self.run_t, duration = self.run_t)
self.anim.bind(on_complete = self.finish_callback)
self.anim.start(self)
def finish_callback(self, animation, param):
print('in finish_callback')
end_1 = self.ids['count_down']
end_1.text = 'Finished'
Animation.cancel_all(self)
kv = Builder.load_file("integrate.kv")
class PageScrollerApp(App):
def build(self):
return kv
if __name__ == "__main__":
PageScrollerApp().run()
WindowManager:
MainWindow:
SecondWindow:
ThirdWindow:
<MainWindow>:
name: "home"
FloatLayout:
Button:
pos_hint: {"x":0.4, "y":0.05}
text: "Go!"
on_release:
app.root.current = 'low'
<SecondWindow>:
name: 'low'
FloatLayout:
Label:
id: count_down1
text: str(round(root.a, 1))
pos_hint: {"x": 0.4, "y": 0.55}
Button:
background_color: 0.5,0.1,1,1
text: 'next'
pos_hint: {"x":0.4, "y":0.05}
on_release:
app.root.current = "medium"
<ThirdWindow>:
name: "medium"
FloatLayout:
Label:
id: count_down2
text: str(round(root.a, 1))
pos_hint: {"x": 0.4, "y": 0.55}
Button:
background_color: 0.5,0.1,1,1
text: 'Cancel'
pos_hint: {"x":0.4, "y":0.05}
on_release:
app.root.current = "home"
<Button>
font_size: 20
color:1,0.2,0.5,1
size_hint: 0.2, 0.1
background_color: 0.5,0.8,0.2,1
<Label>
font_size: 20
color:1,0.2,0.5,1
size_hint: 0.2, 0.1
background_color: 0.5,0.2,0.9,1
class WindowManager(ScreenManager):
a = NumericProperty(0)
b = NumericProperty(0)
run_t = 15
min = 3
max = 7
def reset(self):
self.a = 0
self.b = 0
def start(self, *args):
self.a = randint(self.min, self.max)
self.anim = Animation(a=0, duration=self.a)
if self.run_t - self.b <= self.max:
self.a = self.run_t - self.b
print("a=", self.a, "b=", self.b)
self.anim = Animation(a=0, duration=self.a)
else:
print(self.run_t - self.b)
self.anim.bind(on_complete=self.start)
# print('starting anim number:', self.lap_counter)
self.anim.start(self)
def count_up(self):
self.anim = Animation(b=self.run_t, duration=self.run_t)
self.anim.bind(on_complete=self.finish_callback)
self.anim.start(self)
def finish_callback(self, animation, param):
print('in finish_callback')
end_1 = self.ids['count_down']
end_1.text = 'Finished'
Animation.cancel_all(self)
class PageScrollerApp(App):
def build(self):
return Builder.load_file("integrate.kv")
<MainWindow>:
name: "home"
FloatLayout:
Button:
pos_hint: {"x":0.4, "y":0.05}
text: "Go!"
on_release:
root.manager.reset()
root.manager.start()
root.manager.current = 'low'
<SecondWindow>:
name: 'low'
FloatLayout:
Label:
id: count_down1
text: str(round(root.manager.timer.a, 1))
pos_hint: {"x": 0.4, "y": 0.55}
Button:
background_color: 0.5,0.1,1,1
text: 'next'
pos_hint: {"x":0.4, "y":0.05}
on_release:
root.manager.current = "medium"
<ThirdWindow>:
name: "medium"
FloatLayout:
Label:
id: count_down2
text: str(round(root.manager.timer.a, 1))
pos_hint: {"x": 0.4, "y": 0.55}
Button:
background_color: 0.5,0.1,1,1
text: 'Cancel'
pos_hint: {"x":0.4, "y":0.05}
on_release:
root.manager.current = "home"