emitCurrentBluetoothStatus static method

Stream<BluetoothStatus> emitCurrentBluetoothStatus(MethodChannel channel)

Emits the current Bluetooth adapter status to the Dart side.

This method communicates with the native Android code to obtain the current status of the Bluetooth adapter and emits it to any listeners on the Dart side.

Listeners on the Dart side will receive one of the following enum values from BluetoothStatus:

• BluetoothStatus.enabled: Indicates that Bluetooth is enabled and ready for connections.
• BluetoothStatus.disabled: Indicates that Bluetooth is disabled and not available for use.
• BluetoothStatus.notAvailable: Indicates that Bluetooth is not available on the device.

Returns a Future containing a Stream of BluetoothStatus values representing the current status of the Bluetooth adapter on the device.

Implementation

static Stream<BluetoothStatus> emitCurrentBluetoothStatus(
  MethodChannel channel,
) {
  final StreamController<BluetoothStatus> streamController =
      StreamController<BluetoothStatus>.broadcast();

  // Listen to the platform side for Bluetooth adapter status updates.
  channel
    ..setMethodCallHandler((MethodCall call) async {
      if (call.method == 'adapterStateUpdated') {
        final String statusString = call.arguments as String;

        // Convert the string status to its corresponding enum value
        final BluetoothStatus status = BluetoothStatus.values.firstWhere(
          (e) => e.identifier == statusString,
          orElse: () => BluetoothStatus.notAvailable,
        ); // Default to notAvailable if the string does not match any enum value

        streamController.add(status);
      }
    })

    // Begin emitting Bluetooth adapter status updates from the platform side.
    ..invokeMethod('emitCurrentBluetoothStatus');

  return streamController.stream;
}