Question

我需要使用google android 2.1获取该地区可用的蓝牙设备列表。

事情是，我不仅需要这些设备的列表，我需要为每个找到的设备提供一些唯一的ID，我需要一个指示器，接收信号的“好”程度（如android中的“级别”）。 wifi.ScanResult）...我该怎么做？

Answer 1

查看下面的代码：

开始搜索

mBluetoothAdapter.startDiscovery(); 
mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();

    //Finding devices                 
    if (BluetoothDevice.ACTION_FOUND.equals(action)) 
    {
        // Get the BluetoothDevice object from the Intent
        BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        // Add the name and address to an array adapter to show in a ListView
       mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
    }
  }
};

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); 
registerReceiver(mReceiver, filter);

Answer 2

调用方法bluetoothScanning，需要上下文

void bluetoothScanning(){

    IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
    context.registerReceiver(mReceiver, filter);
    final BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    mBluetoothAdapter.startDiscovery();

}


// Create a BroadcastReceiver for ACTION_FOUND.
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            // Discovery has found a device. Get the BluetoothDevice
            // object and its info from the Intent.
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            String deviceName = device.getName();
            String deviceHardwareAddress = device.getAddress(); // MAC address

            Log.i("Device Name: " , "device " + deviceName);
            Log.i("deviceHardwareAddress " , "hard"  + deviceHardwareAddress);
        }
    }
};

结果

名称：LE-Bose Revolve + SoundLink deviceHardwareAddress：MAC .....

Answer 3

此代码使用BeaconManager，它连续扫描新的蓝牙设备并返回一个Beacons List对象，您可以使用该对象获取所需的任何信息。

确保您导入BeaconManager

private BeaconManager beaconManager;

//In onCreate method
beaconManager = BeaconManager.getInstanceForApplication(this);
beaconManager.getBeaconParsers().add(new BeaconParser().
                setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));

//use these out of the onCreate method
public void onScanStart(View view) {
        stopScanButton.setEnabled(true);
        scanningButton.setEnabled(false);
        beaconManager.bind(this);
}

@Override
public void onBeaconServiceConnect() {
    beaconManager.removeAllRangeNotifiers();
    beaconManager.addRangeNotifier(new RangeNotifier() {
    @Override
    public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
    for (Beacon b : beacons) {
        System.out.println(String.format("%s: %f: %d", b.getBluetoothName(), b.getDistance(), b.getRssi()));
  });
    try {
//Tells the BeaconService to start looking for beacons that match the passed.
        beaconManager.startRangingBeaconsInRegion(new Region("myRangingUniqueId", null, null, null));
    } catch (RemoteException e) {
        Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
    }
}

让我知道这是否对您有用！

如何在android中扫描范围内的可用蓝牙设备？

3 个答案: