iOS6: CBPeripheral is being dealloc'ed while connecting

Question

I\'m trying to connect to a bluetooth BTLE device. I have no problem discovering the peripheral.

However, when I attempt to connect to the peripheral, I received the

Answer 1

Short answer: You need to retain the peripheral.

Long explanation: Core Bluetooth does not know whether you are interested in this peripheral when it is discovered. Connecting to it is not enough, you need to retain it.

Add a property to the class where you are doing all that:

@property (strong) CBPeripheral     *connectingPeripheral;

And then assign the peripheral to this property when the device is discovered, before you return from didDiscoverPeripheral:

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
  DDLogVerbose(@"Discovered peripheral: %@ advertisement %@ RSSI: %@", [peripheral description], [advertisementData description], [RSSI description]);

  [central connectPeripheral:peripheral options:nil];
  self.connectingPeripheral = peripheral;
}