Day Change Triggers React [Native] View Update

I've been working on a React Native component that needs to update itself when the day changes, regardless of user interaction.

Is there another method besides using setInterval for this task? If I use setTimeout in my viewDidLoad function with the number of milliseconds until the next day, won't the interval be inaccurate if the app is paused? Another option is to run a periodic timer, but I would need to set a short interval for a seamless transition when the day changes, which may not be the most efficient approach.

Could there be something important that I'm overlooking?

javascriptiosreactjssettimeoutreact-native

Answer №1

When it comes to designing app architecture, one major concern arises. The best approach is to retrieve the current time in seconds (new Date().getTime()), calculate the number of seconds until the next day, and create a timer for that duration.

However, if the app is terminated, this timer will no longer be accurate, as you rightly pointed out.

To address this issue, utilize AppStateIOS to monitor when the app moves to the background or foreground. When the app goes to the background, reset the timer. Upon returning to the foreground, recalculate the time and initiate a new timer.

Regrettably, there is currently no similar functionality available on Android.

Answer №2

For tracking changes in the day due to timezone adjustments or crossing midnight, consider using react-native-midnight. This library taps into native APIs and triggers event listeners whenever the day transitions occur.

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