由网友(剧情再美终是戏)分享简介：如何发现和对Android的蓝牙设备使用Java？任何codeS为我指什么？How to discover and pair Android Bluetooth devices using Java? Any codes for me to refer to?推荐答案以下code将发现的配对，之后未配对设备u必须...

如何发现和对Android的蓝牙设备使用Java？任何codeS为我指什么？

How to discover and pair Android Bluetooth devices using Java? Any codes for me to refer to?

推荐答案

以下code将发现的配对，之后未配对设备u必须实现客户端和服务器，这需要配对的照顾名单设备和发送数据到设备，为达ü可以利用 BluetoothChatSample 这将给一个想法到u

the following code will discover the list of paired and the unpaired devices after that u have to implement the Client and server, which takes care of pairing the devices and sending data to the devices, for tat u can make use of the BluetoothChatSample which will give an idea to u.

private Set<BluetoothDevice> pairedDevices;
public static ArrayList<Object> BondedDeviceList;
public static ArrayList<Object> NewDeviceList;

 public void makeDiscoverable()
{
    discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
    discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
    activity.startActivity(discoverableIntent);
}

//It will Add the paired device in the BondedDeviceList
public void queryPairedDevice(){
    pairedDevices = mBluetoothAdapter.getBondedDevices();

    // If there are paired devices
    if(pairedDevices==null)
    {
        //No Bonded Devices 

    }else
    {
        if (pairedDevices.size() > 0) {
            // Loop through paired devices
            for (BluetoothDevice device : pairedDevices) {
                BondedDeviceList.add(device);
            }
            BondedDeviceList.add("End");
        }
    }
}

//Broadcast Receiver will find the Available devices and the discovery finished
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();

        // When discovery finds a device
        if (BluetoothDevice.ACTION_FOUND.equals(action.trim())) {
            // Get the BluetoothDevice object from the Intent
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            // If it's already paired, skip it, because it's been listed already
            if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
                NewDeviceList.add(device);
            }
            // When discovery is finished, change the Activity title
        } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
            if (NewDeviceList.isEmpty() == true) {
                String noDevices = "No Devices";
                NewDeviceList.add(noDevices);
            }
            System.out.println("Discovery Finished!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            NewDeviceList.add("End");
        }
    }
};

//This is query for the bluetooth devices 
public void queryDevices(){
    actionFoundFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
    activity.registerReceiver(mReceiver, actionFoundFilter);
    // Don't forget to unregister during onDestroy

    discoveryFinishedFilter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
    activity.registerReceiver(mReceiver, discoveryFinishedFilter); 
    // Don't forget to unregister during onDestroy
    queryPairedDevice();
    mBluetoothAdapter.startDiscovery();
}


//Unregister the receivers
public void unregisterReceiver() {
    // Make sure we're not doing discovery anymore
    if (mBluetoothAdapter != null) {
            mBluetoothAdapter.cancelDiscovery();
    }
    // Unregister broadcast listeners
    activity.unregisterReceiver(mReceiver);
}

干杯。