State of Bluetooth LE on Android in 2023

on YouTube ↗40m

" summary

Bluetooth LE on Android is usable but brittle: avoid supporting versions below Android 8 (API 26), rely on companion device manager plus a foreground service from Android 12 and register a companion device service to wake the app, and treat the autoConnect flag as “indirect” not a simple retry. Queue every GATT operation with a mutex and timeout (example: coroutine-based queue), never retain BluetoothGattCharacteristic objects, prefer the new memory-safe callbacks introduced in API level 33, and use write type no response or PHY 2M/LE coded only when the device and workflow tolerate the limits.

AI-written summary · about

" chapters (10)

1. 0:00Start
2. 6:02Android BLE requirements
3. 7:30Use CompanionDeviceManager
4. 12:21Bonding
5. 15:03Companion Device Service
6. 19:59Two common GATT designs
7. 25:29Deprecated callbacks
8. 31:10Connection Strategy
9. 35:04Long-range, low bandwidth
10. 37:35Common pitfalls

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