So, I just noticed that it returns an array, and my peripheral is in there. But then what is -centralManager:didRetrievePeripherals: for? On Jul 2, 2014, at 16:46 , Jason Conn <conn@apple.com> wrote:

- [CBCentralManager retrievePeripheralsWithIdentifiers:] is a synchronous method.

On Jul 2, 2014, at 4:21 PM, Rick Mann <rmann@latencyzero.com> wrote:

...

I'm remembering the last-connected peripheral by storing the identifier in NSUserDefaults, then trying to retrieve that peripheral on the next launch.

Store:

NSString* uuid = self.peripheral.identifier.UUIDString; // Store uuid in NSUserDefaults

Retrieve:

NSUUID* uuid = [[NSUUID alloc] initWithUUIDString: inPeripheralIdentifier]; [self.cm retrievePeripheralsWithIdentifiers: @[ uuid ]];

But -centralManager:didRetrievePeripherals: is never called (at all, even with an error).

Am I doing something wrong? Thanks!

-- Rick

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