CBManagerState 里面有应该就有,没有就没办法了吧
* @
constant CBManagerStateUnknown State unknown, update imminent.
* @
constant CBManagerStateResetting The connection with the system service was momentarily lost, update imminent.
* @
constant CBManagerStateUnsupported The platform doesn't support the Bluetooth Low Energy Central/Client role.
* @
constant CBManagerStateUnauthorized The application is not authorized to use the Bluetooth Low Energy role.
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constant CBManagerStatePoweredOff Bluetooth is currently powered off.
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constant CBManagerStatePoweredOn Bluetooth is currently powered on and available to use.