NFC Blocking delivery of intents to other apps

Bug reports
1

Detailed description of the problem:

When using an NFC tag as the captcha for alarms, it seems like the NFC scanning Activity is blocking the delivery of NFC intents to other apps afterwards. I only have a single NFC tag configured in SleepAsAndroid, but after scanning that one to dismiss my alarm, subsequent NFC intents from other tags even are not delivered to their respective apps.

Steps to reproduce:

  1. Go to SleepAsAndroid Settings → Alarms → Captcha → NFC Tag → Preview
  2. Scan the configured NFC tag to dismiss the preview screen
  3. Navigate home
  4. Scan a different NFC tag (Note: at this point logcat will indicate the intent is still being delivered to SleepAsAndroid).
  5. Force stop SleepAsAndroid
  6. Rescan different NFC tag

After rescanning after the force stop, the intent is able to be delivered. Is it possible to have SleepAsAndroid only register for NFC events when the NFC activity is active and not otherwise?

Version of Sleep as Android:

20250220

Device Details

Android Version: 15
Device Model: Oneplus 13R

2

For reference: in logcat I see “NFCScanner: enableForegroundDispatch” show up but no corresponding log indicating that “disableForegroundDispatch” is ever called so my assumption is that SleepAsAndroid is remaining as the prioritized app until it is fully killed i.e. with force stop.

3

Also to be clear, this is a common issue on both the NFC Captcha preview screen as well as when dismissing an active alarm so it’s something that is recurring on a daily basis for me.

4

Hi @jimmysprinkles, thank you for reporting and big sorry it is taking us this long. We have been solving a very urgent issue with layout incompatibility on the older Android version. We will have a look into this after the weekend.
Do you recall if this has been always an issue for you, or it is linked to one of our updates?

5

No problem, appreciate the response and the priorities are understandable. At least this issue has a workaround even if its not an elegant one.

I believe this has probably always been an issue but I can’t really say for sure since I’ve only recently started using NFC tags for other apps outside of SleepAsAndroid.

6

Hi, could you please test this solution and let us know?
https://sleep.urbandroid.org/wp-content/uploads/release/sleep-20250308-beta-release.apk

7

This update fixes this issue for me, thanks

8

Perfect, thank you for helping us test the fix!