iOS检测蓝牙是否开启

首先在build phase中添加CoreBluetooth.framework
然后在你的.m文件中#import
初始化

  • (CBCentralManager *)bluetoothManager {
    if (_bluetoothManager == nil) {
    _bluetoothManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];
    }
    return _bluetoothManager;
    }
实现代理方法
  • (void)centralManagerDidUpdateState:(CBCentralManager *)central {
    UIView *mainView = [[UIApplication sharedApplication].windows firstObject];
    【iOS检测蓝牙是否开启】switch (central.state) {
    case CBCentralManagerStatePoweredOff:{
    [mainView makeToast:@"蓝牙没有开启,在设置中打开蓝牙"];
    }
    break;
    case CBCentralManagerStatePoweredOn:
    break;
    case CBCentralManagerStateResetting:
    break;
    case CBCentralManagerStateUnauthorized:
    break;
    case CBCentralManagerStateUnknown:
    break;
    case CBCentralManagerStateUnsupported:
    [mainView makeToast:@"当前设备不支持蓝牙"];
    break;
    default:
    break;
    }
    }
    通过这个代理方法就可以得到当前设备的蓝牙状态了

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