Android-u-blox-BLE
The u-blox Bluetooth low energy Android app allows developers to evaluate the stand-alone Bluetooth low energy modules from u-blox.
These files are all working with Android Studio 3.2.1 and with SDK version 28.
Needed files to get BLE working in your app:
\services\BluetoothLeService.java
\utils\BLEQueue.java
\utils\GattAttributes.java
\utils\QueueItem.java
In the app manifest you need at least the following:
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-feature android:name="android.hardware.bluetooth_le" android:required="true" />In the application tag you must have:
<service android:name="com.[yourcompany].[yourapp].services.BluetoothLeService" android:enabled="true" />For a simple and striped down Activity see BasicBLEActivity.java, here we have the simplest way of connecting to the service to be able to connect, read, write and to get notifications from a BLE device like NINA-B1. This Activity is well documented to set you started in no time.
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