public void Dispose()
{
if (_PeripheralManager == null)
{
return;
}
_PeripheralManager.Dispose();
_PeripheralManager = null;
}
private Task <PermissionStatus> RequestBluetoothAsync()
{
var manager = new CBPeripheralManager();
var tcs = new TaskCompletionSource <PermissionStatus>(manager);
manager.StateUpdated += StatusCollback;
return(tcs.Task.ReturnInTimeoutAsync(PermissionStatus.Unknown, PermissionTimeout));
void StatusCollback(object sender, EventArgs e)
{
var state = manager.State;
manager.StateUpdated -= StatusCollback;
var result = PermissionStatus.Unknown;
switch (state)
{
case CBPeripheralManagerState.PoweredOff:
case CBPeripheralManagerState.Unsupported:
result = PermissionStatus.Disabled;
break;
case CBPeripheralManagerState.PoweredOn:
result = PermissionStatus.Granted;
break;
case CBPeripheralManagerState.Unauthorized:
result = PermissionStatus.Denied;
break;
case CBPeripheralManagerState.Resetting:
default:
result = PermissionStatus.Unknown;
break;
}
switch (CBPeripheralManager.AuthorizationStatus)
{
case CBPeripheralManagerAuthorizationStatus.Denied:
case CBPeripheralManagerAuthorizationStatus.NotDetermined:
result = PermissionStatus.Denied;
break;
case CBPeripheralManagerAuthorizationStatus.Restricted:
result = PermissionStatus.Restricted;
break;
}
manager.Dispose();
manager = null;
tcs.SetResult(result);
}
}
public void Dispose()
{
if (_Disposed)
{
return;
}
// cleanup resources
if (_PeripheralManager != null)
{
_PeripheralManager.Dispose();
}
_Disposed = true;
}