App Inventor Extensions


Alarm Extension

See the App Inventor Extensions document about how to use an App Inventor Extension.

For questions about this extension or bug reports please start a new thread in the App Inventor Extensions forum. Thank you.

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Aug 26th, 2016: Initial Version released

Mrz 31th, 2020: Paid version released, which adds the weekday property for repeating alarms and is able to set a timer

What are the differences between free and paid version?

Description

This extension enables you to set an alarm programmatically for devices > API Level 9, Android 3.0 (Honeycomb).
Required permission: com.android.alarm.permission.SET_ALARM
Note: You will have to build the app to be able to test it, because the companion app does not offer the required permission.

Properties


Returns whether user interface should be skipped.


Specifies whether user interface should be skipped. Default is true.

Additional Property for the paid version


Specifies weekdays for repeating alarms. This is a list in csv format with values from 1(SUN) to 7 (SAT). To use that property, minimum Android API Level is 19 (Android 4.4).

Methods


Set alarm.

Additional Method for the paid version


Set timer-

Events


Event raised after setting the alarm or timer.

Example App (free version): Set Alarm

Screenshots:

Note: you have to build the app to be able to use this method!

Example App (paid version): Set Alarm, set repeating Alarm and Set Timer


Screenshots:

Note: you have to build the app to be able to use this method!


Questions and Answers

Q1: I find it a bit strange that your error messages say something like "hour should be < 24" while you just test for the text field being empty.
A: Yes, you are correct. The better solution is to check for empty string and additionally for hour < 24 and minute < 60.

Q2: How can I set an alarm for some date and some hour and minute?
A: Unfortunately the AlarmClock API does not offer these features, see also here. But you can set the weekday for repeating alarms in the paid version of the extension. You will need min. API Level 19 (Android 4.4) for that.

Q3: Is it possible to cancel an alarm?
A: To cancel an alarm just use the activity starter together with the following blocks (min. API Level is 24), see also here.


Q4: I tried to test this application on the LDPlayer 4 emulator (Android 7.1) and it did not work?
A: As you found out yourself, this will not work in an emulator.

Q5: If I make an alarm on the basis of this extension, will it activate at the right time, like a usual alarm clock?
A: Yes, see also these questions and answers.

Q6 Does it work in the background?
A: Yes, if you define an alarm at a given time, the alarm will start no matter if your app is open or not.

For questions about App Inventor,
please ask in the App Inventor community.Thank you.

Test the functionality of the Alarm extension

The alarm test app is available in Google Play. You can test the examples following these steps

  1. Follow the opt-in URL to get access to the settings app and to be able to download it to your device. It might take a few hours for Google to enable you as beta tester!
  2. Start testing.

Buy the full version of the Alarm extension for App Inventor


You can buy this extension (aix file).
With your payment you accept the terms and conditions below.

Payment options

1. Paypal

Please transfer 12 USD via Paypal
to Pura Vida Apps

2. Bitcoin

After having received your payment I will be happy to send the download link to you. Please let me know your Google account! I usually will send the download link not later than 24 hours after having received your payment.
Thank you! Taifun


Terms and Conditions

Free version of the Alarm extension

The free version offers restricted functionality. See the documentation above about which blocks are available or not.

Terms and Conditions

Download


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Download free version of the Alarm extension (aix file)
Download free version of the Alarm Test project (aia file)
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Creative Commons License
This work by Pura Vida Apps is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License
with attribution (name=Pura Vida Apps and link to the source site) required.


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