connectToBluetoothDevice static method

Future<bool> connectToBluetoothDevice(
  1. String macAddress
)

Connects to a Bluetooth device, if in range, with the specified MAC address.

NOTE: This function must be used to connect to the newPOS device, else the other functions will not work.

The function uses a stream to verify if the connection was successful.

Parameters:

  • macAddress: The MAC address of the Bluetooth device you want to connect to.

Returns:

The function returns a Future<bool>. The Future resolves to true if the connection was successful, or false if an error occurred.

Exceptions:

The function throws a BluetoothConnectionFailed if the connection to the Bluetooth device fails for any reason.

Example:

// Connects the POS device to the Bluetooth device with the MAC address "00:11:22:33:44:55".
final result = await FlutterNewposSdk.connectToBluetoothDevice('00:11:22:33:44:55');

// Checks if the connection was successful.
if (result) {
  print('The POS device is connected to the Bluetooth device');
} else {
  print('The POS device could not connect to the Bluetooth device');
}

Implementation

static Future<bool> connectToBluetoothDevice(String macAddress) async {
  /// Stream method
  final stream = FlutterNewposSdk._methodStream.stream
      .where((m) => m.method == 'OnDeviceConnected')
      .map((m) {
    return m.arguments as bool;
  });

  try {
    await _invokeMethod('connectToBluetoothDevice', macAddress);
    final streamOutputs = await getFirstResultInStream(
      stream,
      const Duration(seconds: 5),
    );
    final result = streamOutputs ?? false;
    if (result) {
      await displayText(text: 'Bluetooth connected');
    }
    return result;
  } on TimeoutException {
    return false;
  } catch (e) {
    throw BluetoothConnectionFailed(code: '');
  }
}