如何知道网络状态是否为iOS上的WiFi热点

Question

Now I can just recognize WiFi/2G/3G/4G, but when the state is WiFi hotspot, AFNetworkReachabilityManager or Reachability also recognize the state as WiFi. Please help me to achieve this requirement, thanks a lot.

Answer 1

I had found the right way:

- (void)startMonitorWifiChange {
    CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
                                    NULL,
                                    &onNotifyCallback,
                                    CFSTR("com.apple.system.config.network_change"),
                                    NULL,
                                    CFNotificationSuspensionBehaviorDeliverImmediately);
}
static void onNotifyCallback(CFNotificationCenterRef center,
                             void *observer,
                             CFStringRef name,
                             const void *object,
                             CFDictionaryRef userInfo) {
    if (CFStringCompare(name, CFSTR("com.apple.system.config.network_change"), kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
        //TODO when wifi changed
        [[BaiduLocationManager sharedManager].baiduLocationManager requestNetworkState];
    }
    else {
        NBLog(@"intercepted %@", name);
    }
}
- (void)stopMonitorWifiChange {
    CFNotificationCenterRemoveObserver(CFNotificationCenterGetDarwinNotifyCenter(),
                                       NULL,
                                       CFSTR("com.apple.system.config.network_change"),
                                       NULL);
}