CBCentralManager

typedef NS_ENUM(NSInteger, CBCentralManagerState) {
    CBCentralManagerStateUnknown = CBManagerStateUnknown,
    CBCentralManagerStateResetting = CBManagerStateResetting,
    CBCentralManagerStateUnsupported = CBManagerStateUnsupported,
    CBCentralManagerStateUnauthorized = CBManagerStateUnauthorized,
    CBCentralManagerStatePoweredOff = CBManagerStatePoweredOff,
    CBCentralManagerStatePoweredOn = CBManagerStatePoweredOn,
} NS_DEPRECATED(NA, NA, 5_0, 10_0, "Use CBManagerState instead");

@property(nonatomic, weak, nullable) id<CBCentralManagerDelegate> delegate;

@property(nonatomic, assign, readonly) BOOL isScanning NS_AVAILABLE(NA, 9_0);

- (instancetype)init;

- (instancetype)initWithDelegate:(nullable id<CBCentralManagerDelegate>)delegate
                           queue:(nullable dispatch_queue_t)queue;

- (instancetype)initWithDelegate:(nullable id<CBCentralManagerDelegate>)delegate
                           queue:(nullable dispatch_queue_t)queue
                         options:(nullable NSDictionary<NSString *, id> *)options NS_AVAILABLE(NA, 7_0) NS_DESIGNATED_INITIALIZER;

- (NSArray<CBPeripheral *> *)retrievePeripheralsWithIdentifiers:(NSArray<NSUUID *> *)identifiers NS_AVAILABLE(NA, 7_0);

- (NSArray<CBPeripheral *> *)retrieveConnectedPeripheralsWithServices:(NSArray<CBUUID *> *)serviceUUIDs NS_AVAILABLE(NA, 7_0);

- (void)scanForPeripheralsWithServices:(nullable NSArray<CBUUID *> *)serviceUUIDs options:(nullable NSDictionary<NSString *, id> *)options;

- (void)stopScan;

- (void)connectPeripheral:(CBPeripheral *)peripheral options:(nullable NSDictionary<NSString *, id> *)options;

- (void)cancelPeripheralConnection:(CBPeripheral *)peripheral;

- (void)centralManagerDidUpdateState:(CBCentralManager *)central;

- (void)centralManager:(CBCentralManager *)central willRestoreState:(NSDictionary<NSString *, id> *)dict;

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *, id> *)advertisementData RSSI:(NSNumber *)RSSI;

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral;

- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error;

- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error;