Simple Java Android application Timer created in Android studio.
Application is using AlarmManager and Broadcast receiver. Broadcast receiver is implemented in Timer class (package com.example.timer) where also Notification body is created.
UI is very simple, clicking the main display time opens a Time picker which allows the user to combine all parameters given by the task and set arbitrary time interval (HH:MM:SS). It was inspired by custom-datetimepicker.
And finally, there are two buttons to start and stop the Timer with selected interval. The functionality of UI elements is implemented in the MainActivity.
Alarm delivery is inexact in order to minimize wakeups and battery use. This is only the problem when setting a shorter interval between notifications (for example few seconds which in my opinion is an useless use case so it is not a problem at all. For a longer interval it works almost exact as you can see in the debug prints below).
Implement timer Java Android application, which will send push-notification every X- interval. The Application should allow user to set an interval and run in the background. The Interval can be set to X- hours/minutes/seconds. Push-notification should meet the following format:
“Current date YYYY-MM-DD and time HH:MM:SS. Next notification in X hours/minutes/seconds.”
e.g., “Current date 2022-05-09 12:40:00. Next notification in 5 seconds.”
Code of the project might be published at public (or private with then given access to read) repository on GitHub. The repository itself should contain README.md file with a clear project description, i.e., the goals of the application and how it works.