POC

The main goal of this project is to interface with Bluetooth Heart Rate Service. Check the project https://github.com/anyercastillo/gatt-server for a mock device

Watch for:

• Bluetooth Gatt https://developer.android.com/reference/android/bluetooth/BluetoothGatt
• Navigation https://developer.android.com/guide/navigation/
• RecyclerView with ListAdapter for a better performance
• Material Design
• Room
• ViewModel
• LiveData
• Coroutines
• DataBinding
• ViewBinding
• LifeCycle Aware
• Factory Pattern
• Hilt

Things learnt

• BluetoothHealth was deprecated in API level 29. New apps should use Bluetooth Low Energy based solutions such as BluetoothGatt.

BLE Peripheral Simulators

Android App https://play.google.com/store/apps/details?id=io.github.webbluetoothcg.bletestperipheral&hl=en_US Rest API https://github.com/anyercastillo/gatt-server

BLE specs

https://www.bluetooth.com/xml-viewer/?src=https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.heart_rate_measurement.xml#tree0:0,6,1|0,7;

How to test it.

1. Enable Bluetooth.
2. Launch the app.
3. Scan for new devices broadcasting heart rate.
4. Each device listed will auto-refresh if the data change.
5. Trigger a "heart rate" from the BLE device or change the "body sensor location" value.