没有通过蓝牙获得EA通知

Question

当通过USB而不是通过蓝牙连接到外部设备（符合MFi）时，我能够收到EA通知。为什么不通过蓝牙连接触发EA通知，这与文档建议相反？

Answer 1

1）您是否在InfoPlist中正确设置了协议字符串？
 2）您是否在蓝牙设备中正确设置了协议字符串？
 3）您是否注册了传入连接事件？像这样：

-(void) <someMethod> {     
    [[EAAccessoryManager sharedAccessoryManager] registerForLocalNotifications];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(accessoryConnected:)
                                                 name:EAAccessoryDidConnectNotification
                                               object:nil];
}

-(void)accessoryConnected: (NSNotification *)notification {
    EAAccessory *accessory = [[notification userInfo] objectForKey:EAAccessoryKey];
    NSLog(@"%@ connected", accessory.name);
}