for flutter_blue v0.8.0 scan ble peripherals adv information

flutter_blue_scan.dart

_scan() async {
  if (isDeviceConnected) return;
  print('_scan()');
  try {
    flutterBlue.scan(
      timeout: Duration(seconds: 4), // onDone()
      withServices: [], // modify the target service UUID
    ).listen((scanResult) {
      
      print("scanResult : $scanResult");
      print(scanResult.device)
      print(scanResult.advertisementData)
      
      // do your own filter
      if (scanResult.device.name == "TARGET_DEVICE_NAME") {
        setState(() {
          _connectDeviceInfo.macAddr =
              _getMacAddr(scanResult.advertisementData.manufacturerData);
        });
        BluetoothDevice device = scanResult.device;
        if (!devicesList.contains(device)) {
          print("_addDeviceTolist : $device");
          setState(() {
            devicesList.add(device);
          });
        }
      }
    }).onDone(() async {
      // timeout
      // print("onDone");
      print("devicesList : $devicesList");
      if (devicesList.length == 0) {
        showAlert("No device founded !");
      } else {
        _targetDevice = devicesList.first;
      }
    });
  } catch (e) {
    print(e);
  }
}