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Android library that allows you to communicate simply using a bluetooth connection.

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Android Bluetooth Library Download

This is an Android library that simplifies the process of bluetooth communication.

Important

I used a BufferedReader to read data from the bluetooth socket. As I'm reading with readLine(), each message you're sending to the Android must end with a \n. Otherwise it won't be received.

This library does not support BLE devices

Install

Add to your gradle dependencies:

implementation 'me.aflak.libraries:bluetooth:1.3.4'

Init with a Context

// you must have bluetooth permissions before calling the constructor
Bluetooth bluetooth = new Bluetooth(context);
//
// ...
//
@Override
protected void onStart() {
    super.onStart();
    bluetooth.onStart();
    bluetooth.enable();
}

@Override
protected void onStop() {
    super.onStop();
    bluetooth.onStop();
}

Listen on bluetooth state changes

bluetooth.setBluetoothCallback(new BluetoothCallback() {
    @Override
    public void onBluetoothTurningOn() {}

    @Override
    public void onBluetoothOn() {}

    @Override
    public void onBluetoothTurningOff() {}

    @Override
    public void onBluetoothOff() {}

    @Override
    public void onUserDeniedActivation() {
        // when using bluetooth.showEnableDialog()
        // you will also have to call bluetooth.onActivityResult()
    }
});

Listen on discovery and pairing

bluetooth.setDiscoveryCallback(new DiscoveryCallback() {
    @Override public void onDiscoveryStarted() {}
    @Override public void onDiscoveryFinished() {}
    @Override public void onDeviceFound(BluetoothDevice device) {}
    @Override public void onDevicePaired(BluetoothDevice device) {}
    @Override public void onDeviceUnpaired(BluetoothDevice device) {}
    @Override public void onError(String message) {}
});

Scan and Pair

bluetooth.startScanning();
bluetooth.pair(device);

Listen on bluetooth socket

bluetooth.setDeviceCallback(new DeviceCallback() {
    @Override public void onDeviceConnected(BluetoothDevice device) {}
    @Override public void onDeviceDisconnected(BluetoothDevice device, String message) {}
    @Override public void onMessage(String message) {}
    @Override public void onError(String message) {}
    @Override public void onConnectError(BluetoothDevice device, String message) {}
});

Connect to device

// three options
bluetooth.connectToName("name");
bluetooth.connectToAddress("address");
bluetooth.connectToDevice(device);

Send a message

bluetooth.send("message");

Get paired devices

List<BluetoothDevice> devices = bluetooth.getPairedDevices();

Download Demo App

Get it on Google Play

License

MIT License

Copyright (c) 2017 Michel Omar Aflak

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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