iOS CBPeripheral连接问题

Question

我调用方法

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

连接我的设备，我的设备在范围内，但我的应用程序仍然无法连接我的设备成功，当我关闭系统BT然后打开BT时，我的应用程序将连接我的设备成功，我不知道为什么？

如果没有关闭BT然后再打开，我可以调用first call方法吗

(void)cancelPeripheralConnection:(CBPeripheral *)peripheral;

然后调用

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

这会有意义吗？

Answer 1

要检查设备是否已连接，您可以使用以下两个委托方法：C：

1) -(空)centralManager：(CBCentralManager*)中央didConnectPeripheral:(CBPeripheral *)外围

2) -(空)centralManager：(CBCentralManager*)中央错误：(CBPeripheral*)外围错误：(NSError*)错误

@property (nonatomic, strong) CBPeripheral *heartRatePeripheral;
#define heartRateServiceCBUUID [CBUUID UUIDWithString:@"0x180D"]

-(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral 
  *)peripheral
{ 
  [self.Customdelegate HRMoniterStatus:peripheral Status:@"Connected"];
  [_heartRatePeripheral discoverServices:@[heartRateServiceCBUUID]];
}

CustomDelegate:

-(void)HRMoniterStatus:(CBPeripheral *)HRMoniter Status:(NSString 
*)connectionStatus
{
  NSLog(@"HRMoniter connection status ::- %@",connectionStatus);
}

Swift :

1)函数中心(_centralManager: CBCentralManager，didConnect外围设备: CBPeripheral)

2)功能中心(_centralManager: CBCentralManager，didDisconnectPeripheral外围设备: CBPeripheral，错误：？)

let heartRateServiceCBUUID = CBUUID(string: "0x180D")

let heartRatePeripheral : CBPeripheral

func centralManager(_ central: CBCentralManager, didConnect peripheral: CBPeripheral)
{
    Customdelegate.hrMoniterStatus(peripheral, status: "Connected")
    heartRatePeripheral.discoverServices([heartRateServiceCBUUID])
}

自定义代理：

func hrMoniterStatus(_ HRMoniter: CBPeripheral?, status connectionStatus: String?) 
{
   print("HRMoniter connection status ::- \(connectionStatus ?? "")")
}