1. Android Studio Set Alarm For Specific Date And Time
2. Android Studio Set Alarm Software
3. Alarm App Android

Jul 27, 2020 Alarm Clock is an android application that helps to set up the alarm for you using a custom GUI Clock.developed by The alarm clock android app allows users to start and stop alarms. Sound is also supported. Notifications are supported, so even when off-screen the user will be given the option to turn off the alarm when it is triggered. Similarly, the user can also select a sound among 7. Android Alarm Set Method. Set(int type，long startTime，PendingIntent pi): Set this alarm execute for just one time. Type is alarm type. StartTime ( milliseconds ) is alarm execute time. Pi is the alarm execute object ( activity, service or broadcast receiver). The AlarmClock provider contains an Intent action and extras that can be used to start an Activity to set a new alarm or timer in an alarm clock application. AlarmClock Class (Android.Provider) Microsoft Docs.

AlarmManager vs WorkManager

You could schedule daily repeating alarm at specific time with AlarmManager, but WorkManager does offer a few extra benefit.

• Ability to set constraints: like only run when network is available, or don’t run when battery is low.
• Ensures task execution, even if the app or device restarts. Refer this.
• Support for retry policy, e.g. retry later if network error.

So, as a guideline, WorkManager is intended for tasks that require a guarantee that the system will run them, even if the app exits. It is not intended for background work that requires immediate execution or requires execution at an exact time. If you need your work to execute at an exact time (such as an alarm clock, or event reminder), use AlarmManager. For work that needs to be executed immediately but is long running, you’ll often need to make sure that work is executed when in the foreground; whether that’s by limiting execution to the foreground (in which case the work is not longer true background work) or using a Foreground Service. - Source

For my scenario, I need the reminder to show up around specific time, doesn’t need to be exact.

Daily Repeating Task at Specific Time with WorkManager

You might be thinking of using PeriodicWorkRequest, but it is not suited to run task at specific time.

• It may run immediately, at the end of the period, or any time in between so long as the other conditions are satisfied at the time - Source. If you setup for a period of one day, it might run at the start of the day or the end of the day, with no gurantee of the time.
• Another problem is time drift. On Day 1 it might run at 6:00am, then subsequent days it might run on time or later, and it will get later and later as the days goes by (due to the doze and battery saving mechanism). By Day 10, it could be running at 10:00am.

We shall be using OneTimeWorkRequest.Builder, delay excution using setInitialDelay based on the time. After the work for today is executed, we schedule the work for next day. To avoid accidentally setting up multiple alarm/request, we shall utiliaze enqueueUniqueWork.

Dependencies.

Code

Android Studio Set Alarm For Specific Date And Time

NOTE:CoroutineWorker is used the example above.

Android Studio Set Alarm Software

Usage

Alarm App Android

References: