iOS 检查网络状态 2G3G4G 私有方法

typedef enum {

    NETWORK_TYPE_NONE=0,

    NETWORK_TYPE_2G=1,

    NETWORK_TYPE_3G=2,

    NETWORK_TYPE_4G=3,

    NETWORK_TYPE_5G=4,//  5G目前为猜测结果

    NETWORK_TYPE_WIFI=5,

} NETWORK_TYPE;

+(NETWORK_TYPE)getNetworkTypeFromStatusBar

{

    UIApplication *app = [UIApplicationsharedApplication];

   NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];

   NSNumber *dataNetworkItemView = nil;

    

   for (id subviewin subviews) {

        

        if ([subviewisKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView")class]]) {

            dataNetworkItemView = subview;

           break;

        }

    }

    NETWORK_TYPE nettype =NETWORK_TYPE_NONE;

   NSNumber * num = [dataNetworkItemView valueForKey:@"dataNetworkType"];

    nettype = [numintValue];

   return nettype;

}