AndroidBluetoothLibrary

A Library for easy implementation of Serial Bluetooth Classic and Low Energy on Android. 💙

Bluetooth Classic working from Android 2.1 (API 7)
Bluetooth Low Energy working from Android 4.3 (API 18)

Looking for React Native version? See also react-native-easybluetooth-classic and react-native-easybluetooth-le

Extension

BluetoothClassicExtendedService extends the classic service with the following features:

Opens bluetooth server socket to accept connections.
Makes devices discoverable

Use

Configuration

Bluetooth Classic

BluetoothConfiguration config = new BluetoothConfiguration();
config.context = getApplicationContext();
config.bluetoothServiceClass = BluetoothClassicService.class;
config.bufferSize = 1024;
config.characterDelimiter = '\n';
config.deviceName = "Your App Name";
config.callListenersInMainThread = true;

config.uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); // Required

BluetoothService.init(config);

Bluetooth Low Energy

BluetoothConfiguration config = new BluetoothConfiguration();
config.context = getApplicationContext();
config.bluetoothServiceClass = BluetoothLeService.class;
config.bufferSize = 1024;
config.characterDelimiter = '\n';
config.deviceName = "Your App Name";
config.callListenersInMainThread = true;

config.uuidService = UUID.fromString("e7810a71-73ae-499d-8c15-faa9aef0c3f2"); // Required
config.uuidCharacteristic = UUID.fromString("bef8d6c9-9c21-4c9e-b632-bd58c1009f9f"); // Required
config.transport = BluetoothDevice.TRANSPORT_LE; // Required for dual-mode devices
config.uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); // Used to filter found devices. Set null to find all devices.

BluetoothService.init(config);

Getting BluetoothService

BluetoothService service = BluetoothService.getDefaultInstance();

Scanning

service.setOnScanCallback(new BluetoothService.OnBluetoothScanCallback() {
    @Override
    public void onDeviceDiscovered(BluetoothDevice device, int rssi) {
    }

    @Override
    public void onStartScan() {
    }

    @Override
    public void onStopScan() {
    }
});

service.startScan(); // See also service.stopScan();

Connecting

service.setOnEventCallback(new BluetoothService.OnBluetoothEventCallback() {
    @Override
    public void onDataRead(byte[] buffer, int length) {
    }

    @Override
    public void onStatusChange(BluetoothStatus status) {
    }

    @Override
    public void onDeviceName(String deviceName) {
    }

    @Override
    public void onToast(String message) {
    }

    @Override
    public void onDataWrite(byte[] buffer) {
    }
});

service.connect(device); // See also service.disconnect();

Writing

BluetoothWriter writer = new BluetoothWriter(service);

writer.writeln("Your text here");

Complete example

See the sample project.

Download

Add it in your root build.gradle at the end of repositories:

allprojects {
  repositories {
    ...
    maven { url "https://jitpack.io" }
  }
}

Add the dependency

2.1. Bluetooth Classic

dependencies {
  compile 'com.github.douglasjunior.AndroidBluetoothLibrary:BluetoothClassicLibrary:0.3.5'
}

2.2. Bluetooth Low Energy

dependencies {
  compile 'com.github.douglasjunior.AndroidBluetoothLibrary:BluetoothLowEnergyLibrary:0.3.5'
}

Add permission in AndroidManifest.xml

<manifest ...>
  <uses-permission android:name="android.permission.BLUETOOTH" />
  <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
  <uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" />
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  ...
</manifest>

Known issues

Location needs to be enabled for Bluetooth Low Energy Scanning on Android 6.0 http://stackoverflow.com/a/33045489/2826279

Contribute

New features, bug fixes and improvements are welcome! For questions and suggestions use the issues.

Before submit your PR, run the gradle check.

./gradlew build connectedCheck

Licence

The MIT License (MIT)

Copyright (c) 2015 Douglas Nassif Roma Junior

See the full licence file.

GPla/AndroidBluetoothLibrary