# nordicsemi/Android-BLE-Library

A library that makes working with Bluetooth LE on Android a pleasure. Seriously.

Repository: https://github.com/nordicsemi/Android-BLE-Library
Canonical: https://ross.abutalabs.com/products/android-ble-library
Language: Java
License: BSD-3-Clause
License Family: permissive
Last push: 2026-07-10T08:05:18+00:00

## Health v2 (maintenance only)
Score: 73/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 91, release rhythm 35, longevity 100
- inputs: {"age_days": 3180, "days_push": 54, "days_rel": 356, "gap_med": 49.0, "n_releases_24m": 7}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2405, forks 463 (observed 2026-08-28T04:06:44.098874+00:00)

## What it is
An Android library by Nordic Semiconductor that simplifies working with Bluetooth Low Energy, handling connection, service discovery, bonding, and GATT operations. It wraps Android's error-prone BLE APIs into a reliable BleManager with retries and request queuing.

## Use cases
- connect to a BLE heart rate sensor from an Android app
- read and write GATT characteristics on Android
- handle Bluetooth bonding and service discovery reliably
- build an Android app for Nordic Semiconductor devices
- scan and communicate with BLE peripherals
- implement BLE notifications and indications on Android

## When to choose
- you are building an Android app that talks to BLE peripherals
- you want battle-tested handling of Android BLE quirks like retries and bonding
- you need GATT operations with request queuing and callbacks or LiveData

## When to avoid
- you want a fully Kotlin coroutines/Flow-based API (consider the new Kotlin BLE Library 2.0)
- you target platforms other than Android
- you need Bluetooth Classic (BR/EDR) rather than BLE

## Facets
- artifact type: library
- maturity: stable
- function: sdk, developer-tools
- domain: android-tools, developer-tools, cross-platform
- platform: jvm
- tags: bluetooth-low-energy, ble, android, iot, connectivity, gatt

## Member repositories
- nordicsemi/Android-BLE-Library (main) score 73

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:44.098874+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:34:08.889089+00:00, confidence not recorded.
  - readme: https://github.com/nordicsemi/Android-BLE-Library (fetched 2026-08-28T04:06:44.098874+00:00, sha b95801e2e4d5)
- Data as of 2026-08-30T08:39:29.467469+00:00.