How to calculate how much hours have to 00.00 in android with Java

Issue

I'll create a count timer for my android app. I want to calculate how much time have in 24:00 in hours from current time. I couldn't not find any solutions and it's so complicated for me to calculate it with miliseconds.

For Example:

Now time is: 22.55 Have 1 hours and 5 minutes to 00.00

I'll make count timer with this like:

Remaining: 1 hours 5 Minutes

Anyone can help me? Thanks a lot.

Solution

You can use java.time.Duration to compute the time difference between now and midnight:

LocalDateTime now = LocalDateTime.now();
LocalDateTime midnight = LocalDate.now().plusDays(1).atTime(0, 0);
Duration between = Duration.between(now, midnight);
System.out.printf("Remaining: %d hours %d minutes",
        between.toHours(), between.toMinutes() % 60);

Answered By - shmosel