如何在android范围内扫描可用的蓝牙设备？
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How to scan for available bluetooth devices in range in android?
提问by xenonite
I need to get a list of available bluetooth devices in the area using google android 2.1.
我需要使用 google android 2.1 获取该地区可用蓝牙设备的列表。
Thing is, i don't just need a list of those devices, i need some unique id for each device found and i need an indicator, how "good" the signal is received (like the "level" in android.wifi.ScanResult)... How do i do that?
问题是，我不仅需要这些设备的列表，我还需要为找到的每个设备提供一些唯一的 id，我需要一个指标，即信号接收的“好”程度（例如 android.wifi.ScanResult 中的“级别”） ）... 我怎么做？
回答by Deepthi
Check out code below :
查看下面的代码：
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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);
回答by user3826696
Call method bluetoothScanning, context is required
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);
}
}
};
Result
结果
Name: LE-Bose Revolve+ SoundLink deviceHardwareAddress: MAC .....
名称：LE-Bose Revolve+ SoundLink 设备硬件地址：MAC .....
回答by Stelios Gabriel
This code uses BeaconManager, it continuously scans for new Bluetooth devices and returns a Beacons List object which you can use to get what ever information you need.
此代码使用 BeaconManager，它不断扫描新的蓝牙设备并返回一个 Beacons List 对象，您可以使用它来获取您需要的任何信息。
Make sure you import BeaconManager
确保导入 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();
}
}
Let me know if that works for you!
让我知道这是否适合您！
