react-native - 当应用程序处于后台状态时如何暂停时钟

Question

我使用创建了一个进度条react-native-reanimated，react-native-redash它工作正常，但现在我想在应用程序进入后台状态时暂停进度或时钟，当应用程序进入活动状态时，它应该以最后一个位置和时间恢复.

clock config

const runTiming = (clock, quizDurationTiming) => {
  const state = {
    finished: new Value(0),
    position: new Value(0),
    frameTime: new Value(0),
    time: new Value(0),
  }
  const config = {
    toValue: new Value(1),
    duration: quizDurationTiming * 10,
    easing: Easing.in(Easing.ease),
  }

  return block([
    cond(
      not(clockRunning(clock)),
      set(state.time, 0),
      timing(clock, state, config)
    ),
    cond(eq(state.finished, 1), stopClock(clock)),

    state.position,
  ])
}

const SpecialTestTimer = ({
  preparationTime,
  appState,
  quizDurationTiming,
}) => {
  const [isCompleted, setIsCompleted] = useState(false)
  const clock = useClock()
  const progress = useValue(0)
  const [play, setPlay] = useState(true)
  const isProgress = useValue(0)

  useEffect(() => {
    if (appState == "active") setPlay(true)
    else setPlay(false)
  }, [appState])

  useCode(() => set(isProgress, play ? 1 : 0), [play])

  useCode(
    () => [
      cond(and(progress, not(clockRunning(clock))), startClock(clock)),
      cond(and(not(progress), clockRunning(clock)), stopClock(clock)),

      set(progress, runTiming(clock, quizDurationTiming)),
    ],
    []
  )
}

我写了这段代码，但没有像我想要的那样正常工作。当我进入屏幕clock时没有启动，但是当我在background状态后进入应用程序时，它clock正在启动。