I can not connect and control more than one Sphero at a time.

[michaeldeitcher]

The SDK is written like this should just work. When I try to do this with 2 Spheros, I get two RKRobotConnected notifications but only one RKRobotOnline notification.

I'd really love to know when you will enable this feature. It is vital to the project I'm working on. Thanks

[PaulTR]

Looks like this works fine. I tested it in the ButtonDrive sample application with the following updated ViewController

@interface ButtonDriveViewController()

@property (strong, nonatomic) RKConvenienceRobot* robot;
@property (strong, nonatomic) RKConvenienceRobot* robot2;
@property (strong, nonatomic) RUICalibrateGestureHandler *calibrateHandler;

@end

@implementation ButtonDriveViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(appWillResignActive:)
                                                 name:UIApplicationWillResignActiveNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(appDidBecomeActive:)
                                                 name:UIApplicationDidBecomeActiveNotification
                                               object:nil];

    self.calibrateHandler = [[RUICalibrateGestureHandler alloc] initWithView:self.view];

    [RKRobotDiscoveryAgent sharedAgent].maxConnectedRobots = 2;

    // hook up for robot state changes
    [[RKRobotDiscoveryAgent sharedAgent] addNotificationObserver:self selector:@selector(handleRobotStateChangeNotification:)];

}

- (void)appDidBecomeActive:(NSNotification*)notification {
    [RKRobotDiscoveryAgent startDiscovery];
}

- (void)appWillResignActive:(NSNotification*)notification {
    [RKRobotDiscoveryAgent stopDiscovery];
    [RKRobotDiscoveryAgent disconnectAll];
}

- (void)handleRobotStateChangeNotification:(RKRobotChangedStateNotification*)n {
    switch(n.type) {
        case RKRobotConnecting:
            [self handleConnecting];
            break;
        case RKRobotOnline: {
            // Do not allow the robot to connect if the application is not running)
            if( self.robot == nil ) {
                self.robot = [RKConvenienceRobot convenienceWithRobot:n.robot];
                [self.robot2 setLEDWithRed:0 green:255 blue:255];
                if ([[UIApplication sharedApplication] applicationState] != UIApplicationStateActive) {
                    [self.robot disconnect];
                    return;
                }
            } else {
                self.robot2 = [RKConvenienceRobot convenienceWithRobot:n.robot];
                [self.robot2 setLEDWithRed:255 green:255 blue:0];
                if ([[UIApplication sharedApplication] applicationState] != UIApplicationStateActive) {
                    [self.robot2 disconnect];
                    return;
                }
            }
            [self handleConnected];
            break;
        }
        case RKRobotDisconnected:
            [self handleDisconnected];
            self.robot = nil;
            [RKRobotDiscoveryAgent startDiscovery];
            break;
        default:
            break;
    }
}

- (void)handleConnecting {
    // Handle when a robot is connecting here
}

- (void)handleConnected {
    [_calibrateHandler setRobot:_robot.robot];
}

- (void)handleDisconnected {
    [_calibrateHandler setRobot:nil];
}

- (IBAction)zeroPressed:(id)sender {
    [_robot driveWithHeading:0.0 andVelocity:0.5];
    [_robot2 driveWithHeading:0.0 andVelocity:0.5];
}

- (IBAction)ninetyPressed:(id)sender {
    [_robot driveWithHeading:90 andVelocity:0.5];
    [_robot2 driveWithHeading:90 andVelocity:0.5];
}

- (IBAction)oneEightyPressed:(id)sender {
    [_robot driveWithHeading:180 andVelocity:0.5];
    [_robot2 driveWithHeading:180 andVelocity:0.5];
}

- (IBAction)twoSeventyPressed:(id)sender {
    [_robot driveWithHeading:270.0 andVelocity:0.5];
    [_robot2 driveWithHeading:270.0 andVelocity:0.5];
}

- (IBAction)stopPressed:(id)sender {
    [_robot stop];
    [_robot2 stop];
//    [RKRobotDiscoveryAgent disconnectAll];
}

@end

[michaeldeitcher]

Thanks so much @PaulTR. I wasn't setting the maxConnectedRobots value in the discovery agent. Your example code works like a charm. :)