如何在范围内找到可用的蓝牙设备？

我试图在一个范围内找到所有可用的蓝牙设备.但我只得到一个设备,我在运行方法的线程中使用它.我已经检查了很多关于此问题的链接,但无法解决此问题.这是我的代码

  public void run() {


if(service != null) {
    IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
    filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
    service.registerReceiver(this.bReceiver, filter);
        bluetooth.startDiscovery();
}

}
class BluetoothReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {

    Set pairedDevices = bluetooth.getBondedDevices();

    String action = intent.getAction();
    if (pairedDevices.size() > 0) {
            for (BluetoothDevice device : pairedDevices) {
                int rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI,Short.MIN_VALUE);
       Log.d(TAG, device.getName());
    }
    }

    if(BluetoothDevice.ACTION_FOUND.equals(action)) {
    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    String uuid = intent.getStringExtra(BluetoothDevice.EXTRA_UUID);
    int rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI,Short.MIN_VALUE);
    Log.d(TAG, device.getName());
    }
    }

}

另外我想要每个找到的设备的rssi值,但请忽略语法