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)

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

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

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

2. Add the dependency

   2.1. Bluetooth Classic

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

   2.2. Bluetooth Low Energy

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

3. 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 / Troubleshooting

• Scanning will not detect bluetooth devices if the user has denied Location Privacy Permission to your app. This library does not test for the permission and will not raise errors. (Android 6.0+) See: 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.