python - 同时运行 kivy 和无限循环

Question

我需要做一个倒计时，然后在手机上使用。听说kivy做手机图形不错，就尝试用这个。我正在尝试同时运行将倒计时的无限 while 循环和将创建窗口并显示剩余时间的 kivy 应用程序。我也在使用 pygame 时钟来计时。但是当我运行这段代码时，while 循环正在计算时间，但它只会创建白色的空白窗口，一段时间后会创建另一个窗口。我做错了什么？

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.properties import ObjectProperty
from kivy.uix.floatlayout import FloatLayout
from kivy.lang import Builder
from kivy.uix.image import Image
from kivy.core.window import Window
from multiprocessing import Process
import pygame


class MyFloat(FloatLayout):
    def __init__(self, **kwargs):
        super(MyFloat, self).__init__(**kwargs)

        self.background = Image(source="textures/background.jpg", allow_stretch=True, keep_ratio=False)
        self.add_widget(self.background)


class MyApp(App):
    def build(self):
        return MyFloat()


def check_time():
    global days
    global hours
    global minutes
    global seconds
    global miliSeconds

    miliSeconds -= 1
    if miliSeconds < 0:
        miliSeconds += 100
        seconds -= 1
    if seconds < 0:
        seconds += 60
        minutes -= 1
    if minutes < 0:
        minutes += 60
        hours -= 1
    if hours < 0:
        hours += 24
        days -= 1
    if days < 0:
        global active
        active = False
        print("End")

    print("days: ", days)
    print("hours: ", hours)
    print("minutes: ", minutes)
    print("seconds: ", seconds)
    print("miliseconds: ", miliSeconds)


def loop():
    while active:
        check_time()

        clock.tick(100)


clock = pygame.time.Clock()

days = 0
hours = 0
minutes = 0
seconds = 30
miliSeconds = 0
active = True


if __name__ == "__main__":
    p1 = Process(target=loop)
    p2 = Process(target=MyApp().run)

    p1.start()
    p2.start()

Answer 1

只需将代码的最后一部分更改为:

if __name__ == "__main__":
    p1 = Process(target=loop)

    p1.start()
    MyApp().run()