判断当前手机网络连接类型wifi-2G-3G-4G

////  网络类型

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 = [UIApplication sharedApplication];

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

NSNumber *dataNetworkItemView = nil;

for (id subview in subviews) {

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

dataNetworkItemView = subview;

break;

}

}

NETWORK_TYPE nettype = NETWORK_TYPE_NONE;

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

nettype = [num intValue];

return nettype;

}