DEV Community: Fares Mohamed

Looking for a Flutter solution for background/killed app notifications based on proximity

Fares Mohamed — Thu, 30 Oct 2025 11:04:46 +0000

Hey devs! 👋

I’m planning to build a Flutter app with two sides: a sender and a potential receiver. The receiver could have the app open, in the background, or even killed.

The idea is:

When the sender sends a request, the app checks if the receiver is nearby (within 50 km).

If they are, the receiver gets a notification like: “Someone nearby sent a request.”

Ideally, it would also know the receiver’s location relative to the sender, but that’s optional.

I’m aware that iOS and Android have strict background/killed app restrictions, so I’m looking for a reliable, cross-platform solution. If it only works on one platform, that’s fine too.

If anyone has experience with:

Background location tracking in Flutter

Sending notifications from killed apps

Proximity-based triggers

…please share your approach or any guidance. Really appreciate it! 🙏

Flutter Error AGP

Fares Mohamed — Sun, 06 Apr 2025 15:03:23 +0000

I Facing AGP Flutter Errors:

FAILURE: Build failed with an exception.

What went wrong:
A problem occurred configuring project ':flutter_barcode_scanner'.

Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
Namespace not specified. Specify a namespace in the module's build file: /Users/faresmohamedmomen/.pub-cache/hosted/pub.dev/flutter_barcode_scanner-2.0.0/android/build.gradle. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.

If you've specified the package attribute in the source AndroidManifest.xml, you can use the AGP Upgrade Assistant to migrate to the namespace value in the build file. Refer to https://d.android.com/r/tools/upgrade-assistant/agp-upgrade-assistant for general information about using the AGP Upgrade Assistant.
Try:

Run with --stacktrace option to get the stack trace.
Run with --info or --debug option to get more log output.
Run with --scan to get full insights.
Get more help at https://help.gradle.org.

BUILD FAILED in 5s
Error: Gradle task assembleDebug failed with exit code 1

Exited (1).

This is my first post!

Fares Mohamed — Sat, 28 Dec 2024 13:33:00 +0000

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